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Li M, Zhang Y, Ma H, Peng Q, Min D, Zhang P, Jiang L. Improved antioxidant activity of pretreated lignin nanoparticles: Evaluation and self-assembly. Int J Biol Macromol 2024; 267:131472. [PMID: 38599437 DOI: 10.1016/j.ijbiomac.2024.131472] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2023] [Revised: 03/21/2024] [Accepted: 04/06/2024] [Indexed: 04/12/2024]
Abstract
Lignin nanoparticles (LNPs) have gained significant attention for their potential as natural antioxidants. This study investigated the effect of various pretreatment methods on the lignin structure and subsequent antioxidant activity of LNPs. Among four pretreated LNPs, hydrothermal LNPs exhibited the highest antioxidant activity, surpassing unpretreated, acid-pretreated and kraft LNPs, with an impressive efficacy of 91.6%. The relationship between LNPs' structure and antioxidant activity was revealed by 2D heteronuclear singular quantum correlation (1H13C HSQC) and 31P nuclear magnetic resonance (NMR). 1H13C HSQC suggested the cleavage of β-O-4 ether bonds, as well as a decrease in ferulic acid and p-coumaric acid, which directly influenced the antioxidant activity of LNPs. 31P NMR demonstrated a positive correlation between the total hydroxyl group content and the antioxidant activity. Besides, an isothermal kinetic model for scavenging free radicals was established based on Langmuir kinetic model instead of Freundlich model. Moreover, multilayer LNPs, based on layer-by-layer self-assembly, were prepared and exhibited remarkable antioxidant activity of 95.8%. More importantly, when blended with pure cosmetic cream, the multilayer LNPs maintained antioxidant activity of 86.7%. These finding may promote the practical applications of biomolecules, e.g. lignin additives in cosmetics and pharmaceuticals.
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Affiliation(s)
- Mingfu Li
- Institute of Biological and Medical Engineering, Guangdong Academy of Sciences, Guangzhou, Guangdong 510316, China; Guangdong Province Engineering Research Center for Green Technology of Sugar Industry, Guangzhou, Guangdong 510316, China
| | - Yingchuan Zhang
- Department of Chemistry, The University of Hong Kong, Hong Kong
| | - Hongli Ma
- Institute of Biological and Medical Engineering, Guangdong Academy of Sciences, Guangzhou, Guangdong 510316, China; College of Engineering, Nanjing Agricultural University, Nanjing 210031, China
| | - Qida Peng
- Institute of Biological and Medical Engineering, Guangdong Academy of Sciences, Guangzhou, Guangdong 510316, China; College of Chemistry and Chemical Engineering, Zhongkai University of Agriculture and Engineering, Guangzhou, 510225, China
| | - Douyong Min
- College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, PR China
| | - Pingjun Zhang
- Institute of Biological and Medical Engineering, Guangdong Academy of Sciences, Guangzhou, Guangdong 510316, China; Guangdong Province Engineering Research Center for Green Technology of Sugar Industry, Guangzhou, Guangdong 510316, China.
| | - Liqun Jiang
- Institute of Biological and Medical Engineering, Guangdong Academy of Sciences, Guangzhou, Guangdong 510316, China; Guangdong Province Engineering Research Center for Green Technology of Sugar Industry, Guangzhou, Guangdong 510316, China.
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2
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Yu Y, Wei X, Chen W, Qian G, Chen C, Wang S, Min D. Design of Single-Atom Catalysts for E lectrocatalytic Nitrogen Fixation. ChemSusChem 2024; 17:e202301105. [PMID: 37985420 DOI: 10.1002/cssc.202301105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2023] [Revised: 11/18/2023] [Accepted: 11/20/2023] [Indexed: 11/22/2023]
Abstract
The Electrochemical nitrogen reduction reaction (ENRR) can be used to solve environmental problems as well as energy shortage. However, ENRR still faces the problems of low NH3 yield and low selectivity. The NH3 yield and selectivity in ENRR are affected by multiple factors such as electrolytic cells, electrolytes, and catalysts, etc. Among these catalysts are at the core of ENRR research. Single-atom catalysts (SACs) with intrinsic activity have become an emerging technology for numerous energy regeneration, including ENRR. In particular, regulating the microenvironment of SACs (hydrogen evolution reaction inhibition, carrier engineering, metal-carrier interaction, etc.) can break through the limitation of intrinsic activity of SACs. Therefore, this Review first introduces the basic principles of NRR and outlines the key factors affecting ENRR. Then a comprehensive summary is given of the progress of SACs (precious metals, non-precious metals, non-metallic) and diatomic catalysts (DACs) in ENRR. The impact of SACs microenvironmental regulation on ENRR is highlighted. Finally, further research directions for SACs in ENRR are discussed.
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Affiliation(s)
- Yuanyuan Yu
- College of Light Industry and Food Engineering, Guangxsi University, Nanning, 530004, P. R. China
- Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, Nanning, 530004, P. R. China
| | - Xiaoxiao Wei
- College of Light Industry and Food Engineering, Guangxsi University, Nanning, 530004, P. R. China
- Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, Nanning, 530004, P. R. China
| | - Wangqian Chen
- College of Light Industry and Food Engineering, Guangxsi University, Nanning, 530004, P. R. China
- Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, Nanning, 530004, P. R. China
| | - Guangfu Qian
- College of Light Industry and Food Engineering, Guangxsi University, Nanning, 530004, P. R. China
- Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, Nanning, 530004, P. R. China
| | - Changzhou Chen
- College of Light Industry and Food Engineering, Guangxsi University, Nanning, 530004, P. R. China
- Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, Nanning, 530004, P. R. China
| | - Shuangfei Wang
- College of Light Industry and Food Engineering, Guangxsi University, Nanning, 530004, P. R. China
- Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, Nanning, 530004, P. R. China
| | - Douyong Min
- College of Light Industry and Food Engineering, Guangxsi University, Nanning, 530004, P. R. China
- Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, Nanning, 530004, P. R. China
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3
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Han L, Tang C, Ma Y, Liu X, Jiang Y, Jiang H, Min D. Revealing the synergistic effect of hydration and pulsed ultrasound on the emulsifying properties of silkworm pupa protein and its stabilized emulsion. J Sci Food Agric 2024. [PMID: 38345737 DOI: 10.1002/jsfa.13377] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Revised: 01/18/2024] [Accepted: 02/06/2024] [Indexed: 02/22/2024]
Abstract
BACKGROUND Silkworm (Bombyx moil L.) Pupa protein (SPP) is a high-quality insect protein and is considered a sustainable alternative source for traditional animal food protein. However, the utilization of SPP is limited because of its low solubility and emulsifying ability. In the present study, the synergistic effect of hydration and pulsed ultrasound on the physicochemical properties of SPP and SPP-stabilized Pickering emulsions was evaluated. RESULTS Pulsed ultrasound changed the particle size of SPP and its conformation. As the pulsed ultrasound increased from 0 s to 5 s, the α-helix and SS contents of SPP decreased, whereas the β-sheet and SH contents increased, which in turn improved its solubility and amphiphilicity. As a result, the SPP treated by a combination of 12 h of hydration and 3 s of ultrasound exhibited a contact angle of 74.95°, hydrophobicity of 904.83, EAI of 6.66 m2 g-1 and ESI of 190.69 min. Compared with the combination of 1 h of hydration and 5 s of ultrasound, the combination of 12 h of hydration and 3 s of ultrasound exerted more soluble and hydrophobic SPP, whereas the EAI and ESI of the samples were higher. Notably, the ultrasound-treated SPP can form a stable gel-like emulsion (oil fraction ranging from 70% to 80%). CONCLUSION The combination of hydration and ultrasound can effectively improve the physicochemical characteristics of SPP as well as its emulsion stability. Sufficient hydration is a cost-effective method for facilitating the modification of proteins by ultrasound treatment. © 2024 Society of Chemical Industry.
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Affiliation(s)
- Lishu Han
- College of Light Industry and Food Engineering, Guangxi University, Nanning, China
- Key Laboratory of Deep Processing and Safety Control for Specialty Agricultural Products in Guangxi Universities, Education Department of Guangxi, Nanning, China
| | - Chengjiang Tang
- College of Light Industry and Food Engineering, Guangxi University, Nanning, China
- Key Laboratory of Deep Processing and Safety Control for Specialty Agricultural Products in Guangxi Universities, Education Department of Guangxi, Nanning, China
| | - Yue Ma
- College of Light Industry and Food Engineering, Guangxi University, Nanning, China
- Key Laboratory of Deep Processing and Safety Control for Specialty Agricultural Products in Guangxi Universities, Education Department of Guangxi, Nanning, China
| | - Xiaoling Liu
- College of Light Industry and Food Engineering, Guangxi University, Nanning, China
- Key Laboratory of Deep Processing and Safety Control for Specialty Agricultural Products in Guangxi Universities, Education Department of Guangxi, Nanning, China
| | - Yi Jiang
- College of Light Industry and Food Engineering, Guangxi University, Nanning, China
- Key Laboratory of Deep Processing and Safety Control for Specialty Agricultural Products in Guangxi Universities, Education Department of Guangxi, Nanning, China
| | - Hongrui Jiang
- College of Light Industry and Food Engineering, Guangxi University, Nanning, China
- Key Laboratory of Deep Processing and Safety Control for Specialty Agricultural Products in Guangxi Universities, Education Department of Guangxi, Nanning, China
| | - Douyong Min
- College of Light Industry and Food Engineering, Guangxi University, Nanning, China
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4
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Jiang H, Shi R, Li X, Tang J, Min D. Insight into the thrombolytic ability of an extracellular fibrinolytic enzyme from Bacillus amyloliquefaciens GXU-1 isolated from Sipunculus nudus. Protein Expr Purif 2024; 213:106371. [PMID: 37709210 DOI: 10.1016/j.pep.2023.106371] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Revised: 09/04/2023] [Accepted: 09/10/2023] [Indexed: 09/16/2023]
Abstract
Bacterial fibrinolytic enzymes have an important role in thrombolytic therapy due to their ability to dissolve fibrin. Therefore, purification, characterization and activity determination are of prime importance for bacterial fibrinolytic enzymes. In the current study, marine Bacillus amyloliquefaciens was first screened from Sipunculus nudus living in the Beibu Gulf of China and denoted as Guangxi University-1 (GXU-1). Then, an extracellular fibrinolytic enzyme (FEB-1) was purified from GXU-1 using ammonium sulfate precipitation, hydrophobic chromatography and gel filtration chromatography. The specific activity of FEB-1 was determined to be as high as 6789.74 U/mg. The relative molecular weight of FEB-1 was measured as 30 kDa through SDS‒PAGE. The optimum in vitro fibrinolytic activity of FEB-1 was identified at 37 °C and pH = 8. Furthermore, the activity of FEB-1 can be well preserved at 20-45 °C and pH = 6.0 to 9.0. The combination analysis of SDS‒PAGE and the molecular docking calculation revealed that FEB-1 can cleave more Aα- and Bβ-chains of fibrinogen than γ-chain. It is noteworthy that FEB-1 is comparatively stable under human-body environmental conditions, indicating its potential application in thrombosis therapy.
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Affiliation(s)
- Hongrui Jiang
- College of Light Industry and Food Engineering, Guangxi University, Nanning, 530004, China
| | - Ruiyuan Shi
- College of Light Industry and Food Engineering, Guangxi University, Nanning, 530004, China
| | - Xiaomei Li
- College of Light Industry and Food Engineering, Guangxi University, Nanning, 530004, China
| | - Jiale Tang
- College of Light Industry and Food Engineering, Guangxi University, Nanning, 530004, China
| | - Douyong Min
- College of Light Industry and Food Engineering, Guangxi University, Nanning, 530004, China.
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5
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Jiang H, Wang X, Han L, Tang C, He J, Min D. Intestine-targeted high internal phase Pickering emulsion formulated using silkworm pupa protein via ultrasonic treatment. Int J Biol Macromol 2023; 246:125620. [PMID: 37392913 DOI: 10.1016/j.ijbiomac.2023.125620] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2023] [Revised: 06/27/2023] [Accepted: 06/28/2023] [Indexed: 07/03/2023]
Abstract
High internal phase Pickering emulsions (HIPPEs) stabilized by food grade particles have received much attention as deliver vehicles for bioactives in recent years. In this study, ultrasonic treatment was conducted to regulate the size of silkworm pupa protein (SPP) particles, fabricating oil-in-water (O/W) HIPPEs with intestinal releasability. Briefly, the pretreated SPP and SPP-stabilized HIPPEs were characterized, and the targeting release was investigated using in vitro gastrointestinal simulations and sodium dodecyl sulfate-polyacrylamide gel electrophoresis. Results revealed ultrasonic treatment time was the key factor regulating emulsification performance and stability of HIPPEs. Optimized SPP particles were obtained based on their size and zeta potential of 152.67 nm and 26.77 mV, respectively. With ultrasonic treatment, the hydrophobic groups in the secondary structure of SPP were exposed, facilitating the formation of a stable oil-water interface for HIPPEs. Additionally, SPP-stabilized HIPPE showed high stable against the gastric digestion. The SPP with 70 kDa molecular weight, which was the major interfacial proteins of the HIPPE, can be hydrolyzed by intestinal digestive enzymes, enabling the intestine-targeted release of the emulsion. Overall, in the present study, a facile method was developed to stabilize HIPPEs using solo SPP with ultrasonic treatment to protect and deliver hydrophobic bioactive ingredients.
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Affiliation(s)
- Hongrui Jiang
- College of Light Industry and Food Engineering, Guangxi University, 53004 Nanning, China.
| | - Xiaoyi Wang
- College of Light Industry and Food Engineering, Guangxi University, 53004 Nanning, China
| | - Lishu Han
- College of Light Industry and Food Engineering, Guangxi University, 53004 Nanning, China
| | - Chengjiang Tang
- College of Light Industry and Food Engineering, Guangxi University, 53004 Nanning, China
| | - Jie He
- Agro-products Quality Safety and Testing Technology Research Institute, Guangxi Academy of Agricultural Sciences, 530007, Guangxi Province, China
| | - Douyong Min
- College of Light Industry and Food Engineering, Guangxi University, 53004 Nanning, China.
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Hao L, Yu Y, Liang Z, Hou H, Liu X, Chen C, Min D. Deciphering photocatalytic degradation of methylene blue by surface-tailored nitrogen-doped carbon quantum dots derived from Kraft lignin. Int J Biol Macromol 2023; 242:124958. [PMID: 37217057 DOI: 10.1016/j.ijbiomac.2023.124958] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2023] [Revised: 05/08/2023] [Accepted: 05/16/2023] [Indexed: 05/24/2023]
Abstract
Lignin in black liquor can be used to manufacture carbon nanomaterials on a large scale. However, the effect of nitrogen doping on the physicochemical properties and photocatalytic performance of carbon quantum dots (NCQDs) remains to be explored. In this study, NCQDs with different properties were prepared hydrothermally by using kraft lignin as the raw material and EDA as a nitrogen dopant. The amount of EDA added affects the carbonization reaction and surface state of NCQDs. Raman spectroscopy showed that the surface defects increased from 0.74 to 0.84. Photoluminescence spectroscopy (PL) showed that NCQDs had different intensities of fluorescence emission at 300-420 nm and 600-900 nm. Meanwhile, NCQDs can photo-catalytically degrade 96 % of MB under simulated sunlight irradiation within 300 min. After three months of storage, the fluorescence intensity of NCQDs remained above 94 %, showing remarkable fluorescence stability. After four times of recycling, the photo-degradation rate of NCQDs was maintained above 90 %, confirming its outstanding stability. As a result, a clear understanding of the design of carbon-based photo-catalyst fabricated from the waste of the paper-making industry has been gained.
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Affiliation(s)
- Lingyun Hao
- College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, PR China; Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, Nanning 530004, PR China
| | - Yuanyuan Yu
- College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, PR China; Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, Nanning 530004, PR China
| | - Zhanming Liang
- College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, PR China; Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, Nanning 530004, PR China
| | - Hewei Hou
- College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, PR China; Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, Nanning 530004, PR China
| | - Xi Liu
- Guangxi Bossco Environmental Protection Technology Co., Ltd, Nanning 530007, PR China
| | - Changzhou Chen
- College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, PR China; Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, Nanning 530004, PR China
| | - Douyong Min
- College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, PR China; Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, Nanning 530004, PR China.
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7
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Tao Y, Du J, Cheng Y, Lu J, Min D, Wang H. Advances in Application of Cellulose-MOF Composites in Aquatic Environmental Treatment: Remediation and Regeneration. Int J Mol Sci 2023; 24:ijms24097744. [PMID: 37175452 PMCID: PMC10177928 DOI: 10.3390/ijms24097744] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2023] [Revised: 04/18/2023] [Accepted: 04/18/2023] [Indexed: 05/15/2023] Open
Abstract
Metal organic frameworks (MOFs) have gained remarkable interest in water treatment due to their fascinating characteristics, such as tunable functionality, large specific surface area, customizable pore size and porosity, and good chemical and thermal stability. However, MOF particles tend to easily agglomerate in nanoscale, thus decreasing their activity and processing convenience. It is necessary to shape MOF nanocrystals into maneuverable structures. The in situ growth or ex situ incorporation of MOFs into inexpensive and abundant cellulose-family materials can be effective strategies for the stabilization of these MOF species, and therefore can make available a range of enhanced properties that expand the industrial application possibilities of cellulose and MOFs. This paper provides a review of studies on recent advances in the application of multi-dimensional MOF-cellulose composites (e.g., aerogels, membranes, and bulk materials) in wastewater remediation (e.g., metals, dyes, drugs, antibiotics, pesticides, and oils) and water regeneration by adsorption, photo- or chemocatalysis, and membrane separation strategies. The advantages brought about by combining MOFs and cellulose are described, and the performance of MOF-cellulose is described and compared to its counterparts. The mechanisms of relative MOF-cellulose materials in processing aquatic pollutants are included. Existing challenges and perspectives for future research are proposed.
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Affiliation(s)
- Yehan Tao
- Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, China
- Liaoning Key Laboratory of Lignocellulose Chemistry and BioMaterials, Liaoning Collaborative Innovation Center for Lignocellulosic Biorefinery, Department of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian 116034, China
| | - Jian Du
- Liaoning Key Laboratory of Lignocellulose Chemistry and BioMaterials, Liaoning Collaborative Innovation Center for Lignocellulosic Biorefinery, Department of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian 116034, China
| | - Yi Cheng
- Liaoning Key Laboratory of Lignocellulose Chemistry and BioMaterials, Liaoning Collaborative Innovation Center for Lignocellulosic Biorefinery, Department of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian 116034, China
| | - Jie Lu
- Liaoning Key Laboratory of Lignocellulose Chemistry and BioMaterials, Liaoning Collaborative Innovation Center for Lignocellulosic Biorefinery, Department of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian 116034, China
| | - Douyong Min
- Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, China
| | - Haisong Wang
- Liaoning Key Laboratory of Lignocellulose Chemistry and BioMaterials, Liaoning Collaborative Innovation Center for Lignocellulosic Biorefinery, Department of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian 116034, China
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8
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Zhang Q, Somerville RJ, Chen L, Yu Y, Fei Z, Wang S, Dyson PJ, Min D. Carbonized wood impregnated with bimetallic nanoparticles as a monolithic continuous-flow microreactor for the reduction of 4-nitrophenol. J Hazard Mater 2023; 443:130270. [PMID: 36332280 DOI: 10.1016/j.jhazmat.2022.130270] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2022] [Revised: 10/08/2022] [Accepted: 10/24/2022] [Indexed: 06/16/2023]
Abstract
Porous monolithic microreactors show great promise in catalytic applications, but are usually based on non-renewable materials. Herein, we demonstrate a Ni/Au nanoparticle-decorated carbonized wood (Ni/Au-CW) monolithic membrane microreactor for the efficient reduction of 4-nitrophenol. The hierarchical porous wood structure supports uniformly distributed heterobimetallic Ni/Au nanoparticles. As a consequence of these two factors, both mass diffusion and electron transfer are enhanced, resulting in a superior reduction efficiency of 99.5% as the liquor flows through the optimised Ni/Au-CW membrane. The reaction mechanism was investigated by electron paramagnetic resonance spectroscopy and density functional theory calculations. The proposed attraction-repulsion mechanism facilitated by the bimetallic nanoparticles has been ascribed to the different electronegativities of Ni and Au. The Ni/Au-CW membrane exhibits excellent catalytic performance and could be applicable to other catalytic transformations.
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Affiliation(s)
- Qingtong Zhang
- College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, PR China; Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
| | - Rosie J Somerville
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
| | - Lan Chen
- College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, PR China
| | - Yuanyuan Yu
- College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, PR China
| | - Zhaofu Fei
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
| | - Shuangfei Wang
- College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, PR China; Guangxi Bossco Environmental Protection Technology Co., Ltd, Nanning 530007, PR China
| | - Paul J Dyson
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
| | - Douyong Min
- College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, PR China.
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9
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Chen C, Zheng N, Wu W, Tang M, Feng W, Zhang W, Li X, Jiang Y, Pang J, Min D, Fu L. Self-Adhesive and Conductive Dual-Network Polyacrylamide Hydrogels Reinforced by Aminated Lignin, Dopamine, and Biomass Carbon Aerogel for Ultrasensitive Pressure Sensor. ACS Appl Mater Interfaces 2022; 14:54127-54140. [PMID: 36413754 DOI: 10.1021/acsami.2c12914] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Conductive hydrogels have attracted extensive interest owing to its potential in soft robotics, electronic skin, and human monitoring. However, insufficient mechanical properties, lower adhesivity, and unsatisfactory conductivity seriously hinder potential applications in this emerging field. Herein, a highly elastic conductive hydrogel with a combination of favorable mechanical properties, self-adhesiveness, and excellent electrical performance was achieved by the synergistic effect of aminated lignin (AL), polydopamine (PDA), polyacrylamide (PAM) chains, and biomass carbon aerogel (C-SPF). In detail, AL was applied to induce slow oxidative polymerization of DA for preparing the sticky hydrogel containing PDA. Then, C-SPF carbon aerogel was used as a matrix to construct a dual-network structured composite hydrogel by combining with the hydrogels derived from PDA, AL, and PAM. The as-prepared conductive hydrogel displayed excellent mechanical performance, strong adhesive strength, and repeatable adhesivity. The prepared hydrogel-based pressure sensor possessed fast response (0.6 s loading and 0.8 s unloading stress time), high response (maximum RCR = 1.8 × 104), wide working pressure range (from 0 to 240.0 kPa), and excellent durability (stable 500 compression cycles with 30% deformation). In addition, the prepared sensor also displayed ultrahigh sensitivity (170 kPa-1), which was near 4 orders of magnitude higher than the conventional lignin-modified PAM hydrogels. The multiple interactions between hydrogel components and the mechanical properties of hydrogel were also verified by molecular dynamics investigation. Moreover, the excellent cytocompatibility and antibacterial activity of this composite hydrogel ensured high potential in various applications such as human/machine interaction, artificial intelligence, personal healthcare, and wearable devices.
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Affiliation(s)
- Changzhou Chen
- College of Light Industry and Food Engineering, Guangxi University, Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, Nanning530004, China
| | - Na Zheng
- College of Light Industry and Food Engineering, Guangxi University, Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, Nanning530004, China
| | - Weixin Wu
- College of Light Industry and Food Engineering, Guangxi University, Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, Nanning530004, China
| | - Mengqi Tang
- College of Light Industry and Food Engineering, Guangxi University, Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, Nanning530004, China
| | - Wenyao Feng
- College of Light Industry and Food Engineering, Guangxi University, Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, Nanning530004, China
| | - Wei Zhang
- College of Light Industry and Food Engineering, Guangxi University, Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, Nanning530004, China
| | - Xiangyu Li
- College of Light Industry and Food Engineering, Guangxi University, Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, Nanning530004, China
| | - Yan Jiang
- College of Light Industry and Food Engineering, Guangxi University, Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, Nanning530004, China
| | - Jinhui Pang
- State Key Laboratory Base of Eco-chemical Engineering, Qingdao University of Science & Technology, Qingdao266042, China
| | - Douyong Min
- College of Light Industry and Food Engineering, Guangxi University, Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, Nanning530004, China
| | - Lianhua Fu
- Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, School of Biomedical Engineering, Health Science Center, Shenzhen University, Shenzhen518060, China
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Yu Y, Zhang Q, Hao L, Huo H, Li M, Liu X, Wang S, Min D. Heterogeneous Cu 2O-Au nanocatalyst anchored on wood and its insight for synergistic photodegradation of organic pollutants. Environ Res 2022; 215:114298. [PMID: 36096174 DOI: 10.1016/j.envres.2022.114298] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2022] [Revised: 08/31/2022] [Accepted: 09/06/2022] [Indexed: 06/15/2023]
Abstract
In this study, a Cu2O-Au nanoparticles (NPs) heterojunction catalyst anchored on wood was developed by in situ reduction and hydrothermal treatment, and the properties of the catalyst were systematically characterized. The catalyst exhibited prominent photocatalysis of methyl orange (MO, 0.169 min- 1), and tetracycline (TC, 0.122 min-1) which were degraded completely within 20 min. Even after four recyclings, the efficiency of MO degradation by the catalyst remained at 80%. The natural wood with three-dimensional porous structures acted as a reducing agent and a stabilizer for Au NPs and Cu2O, which helped to maintain high performance and reusability. The presence of Au NPs mediated the light-induced electron transfer and enhanced the absorption of visible light for promoting photocatalytic activity. The intermediates of contaminants within the degradation process were characterized by liquid chromatography-mass spectrometry. Additionally, the photogenerated superoxide radicals and holes were identified by electron spin resonance. Thus, the potential degradation mechanism catalyzed by the Cu2O-Au NPs-wood was proposed. This findings of this study valorizes biomass as a photocatalyst for wastewater remediation.
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Affiliation(s)
- Yuanyuan Yu
- College of Light Industry and Food Engineering, Guangxi University, Nanning, 530004, PR China; Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, Nanning, 530004, PR China
| | - Qingtong Zhang
- College of Light Industry and Food Engineering, Guangxi University, Nanning, 530004, PR China; Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, Nanning, 530004, PR China; Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015, Lausanne, Switzerland
| | - Lingyun Hao
- College of Light Industry and Food Engineering, Guangxi University, Nanning, 530004, PR China; Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, Nanning, 530004, PR China
| | - Huashuang Huo
- College of Light Industry and Food Engineering, Guangxi University, Nanning, 530004, PR China; Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, Nanning, 530004, PR China
| | - Moyan Li
- College of Light Industry and Food Engineering, Guangxi University, Nanning, 530004, PR China; Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, Nanning, 530004, PR China
| | - Xi Liu
- Guangxi Bossco Environmental Protection Technology Co., Ltd, Nanning, 530007, PR China
| | - Shuangfei Wang
- College of Light Industry and Food Engineering, Guangxi University, Nanning, 530004, PR China; Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, Nanning, 530004, PR China; Guangxi Bossco Environmental Protection Technology Co., Ltd, Nanning, 530007, PR China
| | - Douyong Min
- College of Light Industry and Food Engineering, Guangxi University, Nanning, 530004, PR China; Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, Nanning, 530004, PR China.
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11
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Chen L, Liang Z, Zhang X, Zhang L, Wang S, Chen C, Zeng L, Min D. A facile and novel lignin isolation procedure – Methanolic hydrochloric acid treatment at ambient temperature. Int J Biol Macromol 2022; 222:1423-1432. [DOI: 10.1016/j.ijbiomac.2022.09.277] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2022] [Revised: 08/24/2022] [Accepted: 09/28/2022] [Indexed: 11/05/2022]
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12
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Wei X, Yu Y, Shen Z, Liu Y, Liu X, Wang S, Zhang L, Min D. Deciphering the linkage type and structural characteristics of the p-hydroxyphenyl unit in Pinus massoniana Lamb compressed wood lignin. Int J Biol Macromol 2022; 208:772-781. [PMID: 35367267 DOI: 10.1016/j.ijbiomac.2022.03.181] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2022] [Revised: 03/18/2022] [Accepted: 03/26/2022] [Indexed: 11/17/2022]
Abstract
To reveal the existence of p-hydroxyphenyl (H) units in compressed wood lignin, four different milled wood lignins were extracted using Pinus massoniana Lamb compressed wood, Pinus massoniana Lamb normal wood, and sugarcane bagasse as raw materials. Then, three dehydrogenation polymers (DHPs) were synthesized using coniferyl/p-coumaryl alcohol as raw materials to reveal the interunit linkages of H units. The lignin and DHP samples were systematically characterized by 1H, 13C, 2D HSQC, and 31P NMR techniques. Compared with the opposite wood milled wood lignin (OW-MWL) and the normal wood milled wood lignin (NW-MWL), the compressed wood milled wood lignin (CW-MWL) contained a large amount of H units, and the H/G ratio and the p-hydroxyphenyl OH group contents were 0.15 and 1.09 mmol/g, respectively. Through the characterization of CW-MWL and DHPs, it was revealed that p-hydroxyphenyl units mainly coupled with other units by β-O-4, β-β, and β-5 linkages. Compared to the sugarcane bagasse milled wood lignin, it was clearly demonstrated that the H unit rather than p-coumarate ester occurred in CW-MWL. This study comprehensively explored the structural characteristics and linkages of H units in compress wood lignin, and provided useful information for revealing the participation of H units in the construction of lignin macromolecules.
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Affiliation(s)
- Xiaoxiao Wei
- College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, PR China; Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, Nanning 530004, PR China
| | - Yuanyuan Yu
- College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, PR China; Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, Nanning 530004, PR China
| | - Zheng Shen
- College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, PR China; Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, Nanning 530004, PR China
| | - Yi Liu
- College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, PR China; Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, Nanning 530004, PR China
| | - Xi Liu
- Guangxi Bossco Environmental Protection Technology Co., Ltd, Nanning 530007, PR China
| | - Shuangfei Wang
- College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, PR China; Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, Nanning 530004, PR China; Guangxi Bossco Environmental Protection Technology Co., Ltd, Nanning 530007, PR China
| | - Liming Zhang
- College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, PR China; Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, Nanning 530004, PR China
| | - Douyong Min
- College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, PR China; Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, Nanning 530004, PR China.
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13
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Jiang L, Ye H, Ma D, Rodrigues J, Sheng R, Min D. A smartphone-adaptable fluorescent sensing tag for non-contact and visual monitoring of the freshness of fish. Analyst 2022; 147:923-931. [PMID: 35156965 DOI: 10.1039/d1an02191e] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Fish-based food products play important roles in our daily diet. The related food safety is vitally essential for human health, thus it is very necessary to screen the freshness of fish-based foods. In this work, we presented a ratiometric fluorescent probe PTCN for the determination of cadaverine, a metabolic biomarker of the spoilage of fish. PTCN displayed a ratiometric fluorescence response towards cadaverine with good specificity, high sensitivity (LOD = 46 nM) and ultra-fast response (<15 s), and thus has been successfully utilized to determine cadaverine from the spoilage of fish. PTCN was fabricated into cheap and portable sensing tags, which can visually detect gaseous cadaverine with obvious fluorescence color transformation from red to green and a low detection limit (8.65 ppm). Moreover, the PTCN tags were used as smart fluorescent tags for non-contact and visual monitoring of cadaverine in fish. Furthermore, the ratiometric fluorescence signals were utilized to create a smartphone-adaptable digital sensing profile for indicating cadaverine in fish products.
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Affiliation(s)
- Lirong Jiang
- School of Light Industry and Food Engineering, Guangxi University, Nanning 530004, P.R. China.
| | - Huan Ye
- School of Light Industry and Food Engineering, Guangxi University, Nanning 530004, P.R. China.
| | - Dini Ma
- School of Light Industry and Food Engineering, Guangxi University, Nanning 530004, P.R. China.
| | - João Rodrigues
- CQM-Centro de Quimica da Madeira, Universidade da Madeira, Campus da Penteada, 9000-390 Funchal, Madeira, Portugal.
| | - Ruilong Sheng
- CQM-Centro de Quimica da Madeira, Universidade da Madeira, Campus da Penteada, 9000-390 Funchal, Madeira, Portugal.
| | - Douyong Min
- School of Light Industry and Food Engineering, Guangxi University, Nanning 530004, P.R. China.
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14
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Chen L, Wei X, Wang H, Yao M, Zhang L, Gellerstedt G, Lindström ME, Ek M, Wang S, Min D. A modified ionization difference UV-vis method for fast quantitation of guaiacyl-type phenolic hydroxyl groups in lignin. Int J Biol Macromol 2022; 201:330-337. [PMID: 35032489 DOI: 10.1016/j.ijbiomac.2022.01.035] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Revised: 01/02/2022] [Accepted: 01/06/2022] [Indexed: 12/30/2022]
Abstract
An ionization difference UV-Vis method (Δε-spectrum method) is the most potentially simple method for fast quantitation of phenolic hydroxyl groups (ph-OH) in lignin. However, the underestimated results were calculated from the conventional Δε-spectrum method using one- or two-point wavelengths measurement. In this study, a modified Δε-spectrum method using multi-point wavelengths measurement was developed and the negative absorbance was also considered. Four main typical lignin models, e.g. vanilla alcohol, 5-5 biphenyl, stilbenoid and vanillin, were applied as the guaiacyl-type (G-type) phenolic models for the determination of ph-OH by the modified Δε-spectrum method. The 2-methoxyethanol/water/acetic acid = 8/2/0.2 (V/V/V) was used as the acidic solvent system and the 2-methoxyethanol/0.2 M NaOH solution = 1/9 (V/V) was used as the alkaline solvent system. The ph-OH contents in the spruce milled wood lignin (SMWL) and the spruce Kraft lignin (SKL) were respectively quantified by the modified Δε-spectrum method as 1.078 and 4.348 mmol/g, which were comparable to the counterparts determined by 31P Nuclear Magnetic Resonance Spectroscopy (31P NMR). The results revealed that the modified Δε-spectrum method can provide more accurate and reliable results compared to the conventional method.
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Affiliation(s)
- Lan Chen
- College of Light Industry & Food Engineering, Guangxi University, Nanning 530004, PR China; Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, Guangxi University, Nanning 530004, PR China
| | - Xiaoxiao Wei
- College of Light Industry & Food Engineering, Guangxi University, Nanning 530004, PR China; Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, Guangxi University, Nanning 530004, PR China
| | - Huan Wang
- College of Light Industry & Food Engineering, Guangxi University, Nanning 530004, PR China; Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, Guangxi University, Nanning 530004, PR China
| | - Min Yao
- College of Light Industry & Food Engineering, Guangxi University, Nanning 530004, PR China; Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, Guangxi University, Nanning 530004, PR China
| | - Liming Zhang
- College of Light Industry & Food Engineering, Guangxi University, Nanning 530004, PR China; Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, Guangxi University, Nanning 530004, PR China
| | - Göran Gellerstedt
- Department of Fiber and Polymer Technology, School of Chemistry, Royal Institute of Technology, KTH, 100 44 Stockholm, Sweden
| | - Mikeal E Lindström
- Department of Fiber and Polymer Technology, School of Chemistry, Royal Institute of Technology, KTH, 100 44 Stockholm, Sweden
| | - Monica Ek
- Department of Fiber and Polymer Technology, School of Chemistry, Royal Institute of Technology, KTH, 100 44 Stockholm, Sweden
| | - Shuangfei Wang
- College of Light Industry & Food Engineering, Guangxi University, Nanning 530004, PR China; Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, Guangxi University, Nanning 530004, PR China
| | - Douyong Min
- College of Light Industry & Food Engineering, Guangxi University, Nanning 530004, PR China; Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, Guangxi University, Nanning 530004, PR China.
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15
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Jiang L, Ye H, Ma D, Rodrigues J, Sheng R, Min D. A smartphone-adaptable fluorescent sensing tag for non-contact and visual monitoring of the freshness of fish. Analyst 2022. [DOI: https:/doi.org/10.1039/d1an02191e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/28/2023]
Abstract
Fish-based food products play important roles in our daily diet. The related food safety is vitally essential for human health, thus it is very necessary to screen the freshness of fish-based foods.
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Affiliation(s)
- Lirong Jiang
- School of Light Industry and Food Engineering, Guangxi University, Nanning 530004, P.R. China
| | - Huan Ye
- School of Light Industry and Food Engineering, Guangxi University, Nanning 530004, P.R. China
| | - Dini Ma
- School of Light Industry and Food Engineering, Guangxi University, Nanning 530004, P.R. China
| | - João Rodrigues
- CQM-Centro de Quimica da Madeira, Universidade da Madeira, Campus da Penteada, 9000-390 Funchal, Madeira, Portugal
| | - Ruilong Sheng
- CQM-Centro de Quimica da Madeira, Universidade da Madeira, Campus da Penteada, 9000-390 Funchal, Madeira, Portugal
| | - Douyong Min
- School of Light Industry and Food Engineering, Guangxi University, Nanning 530004, P.R. China
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16
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Jiang L, Ye H, Ma D, Rodrigues J, Sheng R, Min D. A smartphone-adaptable fluorescent sensing tag for non-contact and visual monitoring of the freshness of fish. Analyst 2022. [DOI: https://doi.org/10.1039/d1an02191e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Fish-based food products play important roles in our daily diet. The related food safety is vitally essential for human health, thus it is very necessary to screen the freshness of fish-based foods.
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Affiliation(s)
- Lirong Jiang
- School of Light Industry and Food Engineering, Guangxi University, Nanning 530004, P.R. China
| | - Huan Ye
- School of Light Industry and Food Engineering, Guangxi University, Nanning 530004, P.R. China
| | - Dini Ma
- School of Light Industry and Food Engineering, Guangxi University, Nanning 530004, P.R. China
| | - João Rodrigues
- CQM-Centro de Quimica da Madeira, Universidade da Madeira, Campus da Penteada, 9000-390 Funchal, Madeira, Portugal
| | - Ruilong Sheng
- CQM-Centro de Quimica da Madeira, Universidade da Madeira, Campus da Penteada, 9000-390 Funchal, Madeira, Portugal
| | - Douyong Min
- School of Light Industry and Food Engineering, Guangxi University, Nanning 530004, P.R. China
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17
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Zhang Q, Li M, Luo B, Luo Y, Jiang H, Chen C, Wang S, Min D. In situ growth gold nanoparticles in three-dimensional sugarcane membrane for flow catalytical and antibacterial application. J Hazard Mater 2021; 402:123445. [PMID: 33254733 DOI: 10.1016/j.jhazmat.2020.123445] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/03/2020] [Revised: 07/01/2020] [Accepted: 07/07/2020] [Indexed: 05/20/2023]
Abstract
In this work, we decorated gold nanoparticles (Au NPs) in the porous, three-dimensional sugarcane membrane for the flow catalytical and antibacterial application. Due to the uniformly distributed Au NPs in sugarcane channels and the porous structure of sugarcane, the interaction between contaminant and catalysis was enhanced as water flowing through the Au NPs/sugarcane membrane. The Au NPs/sugarcane membrane exhibited superior catalytical efficiency for removing methylene blue (MB) with a turn over frequency of 0.27 molMB·molAu-1·min-1 and the water treatment rate reached up to 1.15×105 L/m2 h with >98.3 % MB removal efficiency. The Au NPs/sugarcane membrane also exhibited superior bacterial removal efficiency as E. coli suspension flowing through it, due to the superimposition effects of physical barrier in sugarcane and the antibacterial property of Au NPs. The tremendous catalytical and antibacterial performance of Au NPs/sugarcane membrane provides a promising potential for the rational design of flow catalytical membrane reactor to purify the microbial contaminated water.
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Affiliation(s)
- Qingtong Zhang
- College of Light Industry and Food Engineering, Guangxi University, Nanning, 530004, China; Guangxi Key Lab of Clean Pulp & Papermaking and Pollution Control, Nanning, 530004, China
| | - Mingfu Li
- College of Light Industry and Food Engineering, Guangxi University, Nanning, 530004, China; Guangxi Key Lab of Clean Pulp & Papermaking and Pollution Control, Nanning, 530004, China
| | - Bin Luo
- College of Light Industry and Food Engineering, Guangxi University, Nanning, 530004, China; Guangxi Key Lab of Clean Pulp & Papermaking and Pollution Control, Nanning, 530004, China
| | - Yuying Luo
- College of Light Industry and Food Engineering, Guangxi University, Nanning, 530004, China; Guangxi Key Lab of Clean Pulp & Papermaking and Pollution Control, Nanning, 530004, China
| | - Hongrui Jiang
- College of Light Industry and Food Engineering, Guangxi University, Nanning, 530004, China
| | - Changzhou Chen
- College of Light Industry and Food Engineering, Guangxi University, Nanning, 530004, China; Guangxi Key Lab of Clean Pulp & Papermaking and Pollution Control, Nanning, 530004, China
| | - Shuangfei Wang
- College of Light Industry and Food Engineering, Guangxi University, Nanning, 530004, China; Guangxi Key Lab of Clean Pulp & Papermaking and Pollution Control, Nanning, 530004, China
| | - Douyong Min
- College of Light Industry and Food Engineering, Guangxi University, Nanning, 530004, China; Guangxi Key Lab of Clean Pulp & Papermaking and Pollution Control, Nanning, 530004, China.
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18
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Zheng N, Chen C, Tang M, Wu W, Jiang Y, Min D. Ultrahigh compressibility and superior elasticity carbon framework derived from shaddock peel for high-performance pressure sensing. RSC Adv 2021; 11:28621-28631. [PMID: 35478543 PMCID: PMC9038115 DOI: 10.1039/d1ra02978a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2021] [Accepted: 08/15/2021] [Indexed: 11/21/2022] Open
Abstract
Shaddock peel, a crop by-product mainly composed of cellulose, hemicellulose, lignin, and pectin, was developed as a flexible sensitive material for detecting environmental external pressure. Firstly, a natural carbon framework (C-SPF) with high conductivity was prepared using hydrothermal treatment followed by carbonization. Then, the PDMS elastomer was coated on the C-SPF instead of dense filling to convert the brittle C-SPF into elastic porous materials (M-SPF). Benefiting from the large deformation space of the porous framework and the stable interactions between PDMS and C-SPF, M-SPF exhibited ultrahigh coercibility (up to 99.0% strain) and high elasticity (99.4% height retention for 10 000 cycles at 50.0% strain). The M-SPF-based pressure sensor also exhibited a quick response (loading and unloading times were 20 ms and 30 ms), high sensitivity (63.4 kPa−1), wide working range (from 0 to 800 kPa), and stable stress-electric current response (10 000 cycles). These advantages open a door to a variety of applications, such as flexible wearable devices, which demonstrated human physiological signal monitoring. The low cost, simple design and portable use of piezoresistive sensors highlight the potential application of the crop by-product shaddock peel as a high-value material. The piezoresistive sensor constructed by a PDMS modified Shaddock peel 3D carbon skeleton has an excellent sensing performance, which has promising potential in the field of human health detection.![]()
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Affiliation(s)
- Na Zheng
- Guangxi Key Laboratory of Clean Pulp and Papermaking and Pollution Control, Nanning, 530004, People's Republic of China
- College of Light Industry and Food Engineering, Guangxi University, Nanning, 530004, People's Republic of China
| | - Changzhou Chen
- Guangxi Key Laboratory of Clean Pulp and Papermaking and Pollution Control, Nanning, 530004, People's Republic of China
- College of Light Industry and Food Engineering, Guangxi University, Nanning, 530004, People's Republic of China
| | - Mengqi Tang
- Guangxi Key Laboratory of Clean Pulp and Papermaking and Pollution Control, Nanning, 530004, People's Republic of China
- College of Light Industry and Food Engineering, Guangxi University, Nanning, 530004, People's Republic of China
| | - Weixin Wu
- Guangxi Key Laboratory of Clean Pulp and Papermaking and Pollution Control, Nanning, 530004, People's Republic of China
- College of Light Industry and Food Engineering, Guangxi University, Nanning, 530004, People's Republic of China
| | - Yan Jiang
- Guangxi Key Laboratory of Clean Pulp and Papermaking and Pollution Control, Nanning, 530004, People's Republic of China
- College of Light Industry and Food Engineering, Guangxi University, Nanning, 530004, People's Republic of China
| | - Douyong Min
- Guangxi Key Laboratory of Clean Pulp and Papermaking and Pollution Control, Nanning, 530004, People's Republic of China
- College of Light Industry and Food Engineering, Guangxi University, Nanning, 530004, People's Republic of China
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19
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Li M, Tu Q, Long X, Zhang Q, Jiang H, Chen C, Wang S, Min D. Flexible conductive hydrogel fabricated with polyvinyl alcohol, carboxymethyl chitosan, cellulose nanofibrils, and lignin-based carbon applied as strain and pressure sensor. Int J Biol Macromol 2020; 166:1526-1534. [PMID: 33181212 DOI: 10.1016/j.ijbiomac.2020.11.032] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2020] [Revised: 10/31/2020] [Accepted: 11/06/2020] [Indexed: 11/30/2022]
Abstract
Employing renewable, environmentally friendly, low-cost lignocellulose to design flexible pressure sensitive hydrogel (PSH) as strain and pressure sensors in wearable electronics represents the global perspective to build sustainable and green society. Lignin-based carbon (LC), as the conductive filler, were uniform distributed in the hydrogel system composing by polyvinyl alcohol (PVA), carboxymethyl chitosan (CMC), and cellulose nanofibrils (CNF) to assemble PSH. The analysis revealed that the cross-linking of components through hydrogen bonds formed among hydroxyl group, amino group and carboxyl group exerts the hydrogel with stretching ability and fatigue resistance. The results indicated that the fracture tensile strength and compression stress of the PC/CNF/LC hydrogel were 133 kPa and 37.7 kPa, respectively. Because of the existence of LC, PSH hydrogel exhibits the sensitive deformation-dependent conductivity and can be applied as a flexible strain and pressure sensor monitoring body motions such as elbow flexion, finger bend and palm grip. Therefore, the assembled PSH hydrogel is a prominent candidate applying as the strain and pressure sensor devices.
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Affiliation(s)
- Mingfu Li
- College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, PR China; Ningbo Institute of Materials Technology & Engineering, Chinese Academy of Sciences, Ningbo 315201, PR China
| | - Qiyuan Tu
- College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, PR China; Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, Guangxi University, Nanning 530004, PR China
| | - Xing Long
- College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, PR China; Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, Guangxi University, Nanning 530004, PR China
| | - Qingtong Zhang
- College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, PR China; Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, Guangxi University, Nanning 530004, PR China
| | - Hongrui Jiang
- College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, PR China
| | - Changzhou Chen
- College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, PR China; Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, Guangxi University, Nanning 530004, PR China
| | - Shuangfei Wang
- College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, PR China; Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, Guangxi University, Nanning 530004, PR China
| | - Douyong Min
- College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, PR China; Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, Guangxi University, Nanning 530004, PR China.
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20
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Min D, Park S, Kim H, Lee SH, Ahn Y, Jung W, Kim HJ, Cho YW. Potential anti-ageing effect of chondroitin sulphate through skin regeneration. Int J Cosmet Sci 2020; 42:520-527. [PMID: 32583476 DOI: 10.1111/ics.12645] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2020] [Revised: 05/03/2020] [Accepted: 06/16/2020] [Indexed: 12/24/2022]
Abstract
OBJECTIVE Skin ageing is inevitably exposed through its typical features such as wrinkles and sagging. Therefore, skin anti-ageing is a major issue in cosmetic research to prevent and improve ageing symptoms using effective ingredients. Chondroitin sulphate (CS), a type of glycosaminoglycan, is an important structural component of the extracellular matrix (ECM) and is involved in various biological processes, such as cell proliferation, differentiation and migration. Here, we aimed to investigate the effects of CS on skin regeneration and examine its efficacy as a potential safe and effective skin anti-ageing ingredient. METHODS We investigated the effects of CS on cell proliferation in normal human keratinocytes and fibroblasts. Then, cell migration, ECM synthesis and related signalling pathways were examined in fibroblasts through gene and protein expression analysis. Finally, the effect on skin wound healing and regeneration was validated using a full-thickness skin wound model and an aged skin model. RESULTS Chondroitin sulphate treatment increased the proliferation of keratinocytes and fibroblasts. It also stimulated the migration and synthesis of ECM components of fibroblasts. Further analysis revealed that CS induced the expression of type I procollagen by activating the extracellular signal-regulated kinase pathway. Using a full-thickness skin wound model and an aged skin model, we confirmed that CS treatment promoted skin wound healing and regeneration. CONCLUSION Together, our results indicated that CS has the potential to facilitate skin regeneration, implying that CS could be clinically applied to improve skin ageing.
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Affiliation(s)
- D Min
- Basic Research & Innovation Division, AMOREPACIFIC R&D Unit, Yongin, Republic of Korea.,Department of Chemical Engineering, Hanyang University, Ansan, Republic of Korea
| | - S Park
- Basic Research & Innovation Division, AMOREPACIFIC R&D Unit, Yongin, Republic of Korea
| | - H Kim
- AMOREPACIFIC R&D Unit, Yongin, Republic of Korea
| | - S H Lee
- Basic Research & Innovation Division, AMOREPACIFIC R&D Unit, Yongin, Republic of Korea
| | - Y Ahn
- Department of Biomedical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, Republic of Korea
| | - W Jung
- Department of Biomedical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, Republic of Korea
| | - H-J Kim
- Basic Research & Innovation Division, AMOREPACIFIC R&D Unit, Yongin, Republic of Korea
| | - Y W Cho
- Department of Chemical Engineering, Hanyang University, Ansan, Republic of Korea
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Luo B, Jia Z, Jiang H, Wang S, Min D. Improving the Reactivity of Sugarcane Bagasse Kraft Lignin by a Combination of Fractionation and Phenolation for Phenol-Formaldehyde Adhesive Applications. Polymers (Basel) 2020; 12:E1825. [PMID: 32823969 PMCID: PMC7464635 DOI: 10.3390/polym12081825] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2020] [Revised: 08/06/2020] [Accepted: 08/10/2020] [Indexed: 12/31/2022] Open
Abstract
The low reactivity of lignin hinders its application as a phenol substitute in phenol-formaldehyde (PF) resin. Therefore, the combination of fractionation and phenolation was adopted to enhance the reactivity of lignin for preparing a phenol-formaldehyde resin adhesive. Sugarcane bagasse kraft lignin and its fractions were employed to replace 40 wt% of phenol to prepare a PF adhesive. The fractionation increased the reactivity of lignin, however the as-prepared lignin-based PF (LPF) hardly met its application requirements as an adhesive. Therefore, the phenolation of lignin under an acidic condition was adopted to further improve its reactivity. The phenolated lignin was characterized by FTIR, gel permeation chromatography, and NMR, indicating its active sites increased while its molecular weight decreased. The phenolated lignin was used to replace 40 wt% of phenol to prepare a PF adhesive (PLPF) which was further employed to prepare plywood. The results indicated that the combination of fractionation and phenolation effectively enhanced the reactivity of lignin, and eventually improved the properties of the PLPF and its corresponding plywood. The free formaldehyde content of PLPF decreased to 0.16%. The wet bonding strength of the as-prepared plywood increased to 1.36 MPa, while the emission of formaldehyde decreased to 0.31 mL/L.
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Affiliation(s)
- Bin Luo
- College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, China; (B.L.); (Z.J.); (H.J.); (S.W.)
- Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, Guangxi University, Nanning 530004, China
| | - Zhuan Jia
- College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, China; (B.L.); (Z.J.); (H.J.); (S.W.)
- Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, Guangxi University, Nanning 530004, China
| | - Hongrui Jiang
- College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, China; (B.L.); (Z.J.); (H.J.); (S.W.)
| | - Shuangfei Wang
- College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, China; (B.L.); (Z.J.); (H.J.); (S.W.)
- Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, Guangxi University, Nanning 530004, China
| | - Douyong Min
- College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, China; (B.L.); (Z.J.); (H.J.); (S.W.)
- Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, Guangxi University, Nanning 530004, China
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22
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Yun X, Zhang Q, Luo B, Jiang H, Chen C, Wang S, Min D. Fabricating Flexibly Resistive Humidity Sensors with Ultra‐high Sensitivity Using Carbonized Lignin and Sodium Alginate. ELECTROANAL 2020. [DOI: 10.1002/elan.202060128] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Xiaojing Yun
- College of Light Industry and Food Engineering Guangxi University Nanning 530004 China
- Guangxi Key Lab of Clean Pulp & Papermaking and pollution Control Nanning 530004 China
| | - Qingtong Zhang
- College of Light Industry and Food Engineering Guangxi University Nanning 530004 China
- Guangxi Key Lab of Clean Pulp & Papermaking and pollution Control Nanning 530004 China
| | - Bin Luo
- College of Light Industry and Food Engineering Guangxi University Nanning 530004 China
- Guangxi Key Lab of Clean Pulp & Papermaking and pollution Control Nanning 530004 China
| | - Hongrui Jiang
- College of Light Industry and Food Engineering Guangxi University Nanning 530004 China
| | - Changzhou Chen
- College of Light Industry and Food Engineering Guangxi University Nanning 530004 China
- Guangxi Key Lab of Clean Pulp & Papermaking and pollution Control Nanning 530004 China
| | - Shuangfei Wang
- College of Light Industry and Food Engineering Guangxi University Nanning 530004 China
- Guangxi Key Lab of Clean Pulp & Papermaking and pollution Control Nanning 530004 China
| | - Douyong Min
- College of Light Industry and Food Engineering Guangxi University Nanning 530004 China
- Guangxi Key Lab of Clean Pulp & Papermaking and pollution Control Nanning 530004 China
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23
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Alharethi R, Mason S, Knight S, Min D, McCulloch M, Butscheck R, Hebl V, Ried B, Kfoury A. Global Coronary Artery Flow Reserve after Heart Transplantation: Recipient or Donor Age-Driven? J Heart Lung Transplant 2020. [DOI: 10.1016/j.healun.2020.01.534] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
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24
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Guo C, Ma H, Zhang Q, Li M, Jiang H, Chen C, Wang S, Min D. Nano MnO 2 Radially Grown on Lignin-Based Carbon Fiber by One-Step Solution Reaction for Supercapacitors with High Performance. Nanomaterials (Basel) 2020; 10:nano10030594. [PMID: 32213993 PMCID: PMC7153713 DOI: 10.3390/nano10030594] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/22/2020] [Revised: 03/11/2020] [Accepted: 03/13/2020] [Indexed: 12/04/2022]
Abstract
MnO2-deposited lignin-based carbon fiber (MnO2-LCF) mats are fabricated for supercapacitor applications. LCF mats are produced from alkali lignin via electrospinning followed by stabilization and carbonization. The carbonization process is carried out at 800, 900, and 1000 °C, and the corresponding mats are denoted as MnO2-LCF-800, MnO2-LCF-900, and MnO2-LCF-1000, respectively. The LCF mats are immersed in a KMnO4 solution at room temperature for 72 h to obtain MnO2-LCF mats. The scanning electron microscopy and X-ray diffraction analysis confirm the deposition of MnO2 on the LCFs. The Brunauer–Emmett–Teller analysis, X-ray spectroscopy, and Raman spectroscopy reveal that MnO2-LCF-800 mat possesses a large number of mesopores and Mn vacancies as compared to MnO2-LCF-900 mat and MnO2-LCF-1000 mat. Consequently, MnO2-LCF-800 mat possesses the best electrochemical properties with a specific capacitance of 131.28 F∙g−1, an energy density of 14.77 Wh∙kg−1, and a power density of 135.01 W∙kg−1 at a specific current of 0.3 A∙g−1. Hence, MnO2-LCF-800 mat shows high potential to be used as a high-performance supercapacitor.
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Affiliation(s)
- Chenyan Guo
- College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, China; (C.G.); (H.M.); (Q.Z.); (M.L.); (H.J.); (C.C.); (S.W.)
- Guangxi Key Laboratory of Clean Pulp Papermaking and Pollution Control, Nanning 530004, China
| | - Haitong Ma
- College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, China; (C.G.); (H.M.); (Q.Z.); (M.L.); (H.J.); (C.C.); (S.W.)
- Guangxi Key Laboratory of Clean Pulp Papermaking and Pollution Control, Nanning 530004, China
| | - Qingtong Zhang
- College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, China; (C.G.); (H.M.); (Q.Z.); (M.L.); (H.J.); (C.C.); (S.W.)
- Guangxi Key Laboratory of Clean Pulp Papermaking and Pollution Control, Nanning 530004, China
| | - Mingfu Li
- College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, China; (C.G.); (H.M.); (Q.Z.); (M.L.); (H.J.); (C.C.); (S.W.)
- Guangxi Key Laboratory of Clean Pulp Papermaking and Pollution Control, Nanning 530004, China
| | - Hongrui Jiang
- College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, China; (C.G.); (H.M.); (Q.Z.); (M.L.); (H.J.); (C.C.); (S.W.)
| | - Changzhou Chen
- College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, China; (C.G.); (H.M.); (Q.Z.); (M.L.); (H.J.); (C.C.); (S.W.)
- Guangxi Key Laboratory of Clean Pulp Papermaking and Pollution Control, Nanning 530004, China
| | - Shuangfei Wang
- College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, China; (C.G.); (H.M.); (Q.Z.); (M.L.); (H.J.); (C.C.); (S.W.)
- Guangxi Key Laboratory of Clean Pulp Papermaking and Pollution Control, Nanning 530004, China
| | - Douyong Min
- College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, China; (C.G.); (H.M.); (Q.Z.); (M.L.); (H.J.); (C.C.); (S.W.)
- Guangxi Key Laboratory of Clean Pulp Papermaking and Pollution Control, Nanning 530004, China
- Correspondence: ; Tel.: +86-0771-3949-947
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25
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Jiang L, Hu Q, Chen T, Min D, Yuan HQ, Bao GM. Highly sensitive and rapid responsive fluorescence probe for determination of formaldehyde in seafood and in vivo imaging application. Spectrochim Acta A Mol Biomol Spectrosc 2020; 228:117789. [PMID: 31780312 DOI: 10.1016/j.saa.2019.117789] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/24/2019] [Revised: 11/10/2019] [Accepted: 11/10/2019] [Indexed: 06/10/2023]
Abstract
Mutagenic formaldehyde (FA) is usually abused to preserve seafood, thus it is very necessary to detect harmful formaldehyde in seafood with a simple and effective method. In this work, we facilely prepared a new fluorescent probe RBNA, which showed a remarkable fluorescence lighting-up response towards FA with high sensitivity and selectivity, fast response (within 5 min) and a low detection limit (0.21 μM). The fluorescence intensity is linearly related to the concentration of FA ranging from 0 to 120 μM (R2 = 0.9952), which enables it to quantitatively determine the concentration of FA. This probe was successfully used to detect FA in seafood samples with good recoveries (80-119%). Furthermore, the probe has been utilized to image FA in living cells and zebrafish with good performance. Therefore, this probe has a good capability for rapid and sensitive determination of FA in seafood.
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Affiliation(s)
- Lirong Jiang
- College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, PR China; School of Chemistry and Chemical Engineering, Tianjin University of Technology, Tianjin 300384, PR China
| | - Qiao Hu
- School of Chemistry and Chemical Engineering, Tianjin University of Technology, Tianjin 300384, PR China
| | - Tianhong Chen
- College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, PR China; School of Chemistry and Chemical Engineering, Tianjin University of Technology, Tianjin 300384, PR China
| | - Douyong Min
- College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, PR China
| | - Hou-Qun Yuan
- Institute of Functional Materials and Agricultural Applied Chemistry, Jiangxi Agricultural University, Nanchang 330045, PR China.
| | - Guang-Ming Bao
- Institute of Veterinary Drug/Jiangxi Provincial Key Laboratory for Animal Health, Jiangxi Agricultural University, Nanchang 330045, PR China.
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26
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Abbas M, Peszlen I, Shi R, Kim H, Katahira R, Kafle K, Xiang Z, Huang X, Min D, Mohamadamin M, Yang C, Dai X, Yan X, Park S, Li Y, Kim SH, Davis M, Ralph J, Sederoff RR, Chiang VL, Li Q. Involvement of CesA4, CesA7-A/B and CesA8-A/B in secondary wall formation in Populus trichocarpa wood. Tree Physiol 2020; 40:73-89. [PMID: 31211386 DOI: 10.1093/treephys/tpz020] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2018] [Revised: 02/10/2019] [Accepted: 02/18/2019] [Indexed: 05/13/2023]
Abstract
Cellulose synthase A genes (CesAs) are responsible for cellulose biosynthesis in plant cell walls. In this study, functions of secondary wall cellulose synthases PtrCesA4, PtrCesA7-A/B and PtrCesA8-A/B were characterized during wood formation in Populus trichocarpa (Torr. & Gray). CesA RNAi knockdown transgenic plants exhibited stunted growth, narrow leaves, early necrosis, reduced stature, collapsed vessels, thinner fiber cell walls and extended fiber lumen diameters. In the RNAi knockdown transgenics, stems exhibited reduced mechanical strength, with reduced modulus of rupture (MOR) and modulus of elasticity (MOE). The reduced mechanical strength may be due to thinner fiber cell walls. Vessels in the xylem of the transgenics were collapsed, indicating that water transport in xylem may be affected and thus causing early necrosis in leaves. A dramatic decrease in cellulose content was observed in the RNAi knockdown transgenics. Compared with wildtype, the cellulose content was significantly decreased in the PtrCesA4, PtrCesA7 and PtrCesA8 RNAi knockdown transgenics. As a result, lignin and xylem contents were proportionally increased. The wood composition changes were confirmed by solid-state NMR, two-dimensional solution-state NMR and sum-frequency-generation vibration (SFG) analyses. Both solid-state nuclear magnetic resonance (NMR) and SFG analyses demonstrated that knockdown of PtrCesAs did not affect cellulose crystallinity index. Our results provided the evidence for the involvement of PtrCesA4, PtrCesA7-A/B and PtrCesA8-A/B in secondary cell wall formation in wood and demonstrated the pleiotropic effects of their perturbations on wood formation.
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Affiliation(s)
- Manzar Abbas
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, National Engineering Laboratory for Tree Breeding, College of Biological Sciences and Technology, Beijing Forestry University, Beijing, China
- State Key Laboratory of Tree Genetics and Breeding, Chinese Academy of Forestry, Beijing, China
| | - Ilona Peszlen
- Department of Forest Biomaterials, North Carolina State University, Raleigh, NC, USA
| | - Rui Shi
- Department of Crop and Soil Science, North Carolina State University, Raleigh, NC, USA
| | - Hoon Kim
- Department of Biochemistry and DOE Great Lakes Bioenergy Research Center, Wisconsin Energy Institute, University of Wisconsin, Madison, Wisconsin, WI, USA
| | - Rui Katahira
- National Bioenergy Center, NREL, Golden, Co, USA
| | - Kabindra Kafle
- Department of Chemical Engineering and Materials Research Institute, The Pennsylvania State University, University Park, PA, USA
| | - Zhouyang Xiang
- State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou, China
| | - Xiong Huang
- State Key Laboratory of Tree Genetics and Breeding, Chinese Academy of Forestry, Beijing, China
| | - Douyong Min
- Light Industry and Food Engineering College, Guangxi University, Nanning, China
| | - Makarem Mohamadamin
- Department of Chemical Engineering and Materials Research Institute, The Pennsylvania State University, University Park, PA, USA
| | - Chenmin Yang
- Forest Biotechnology Group, Department of Forestry and Environmental Resources, North Carolina State University, Raleigh, NC, USA
| | - Xinren Dai
- State Key Laboratory of Tree Genetics and Breeding, Chinese Academy of Forestry, Beijing, China
| | - Xiaojing Yan
- State Key Laboratory of Tree Genetics and Breeding, Chinese Academy of Forestry, Beijing, China
| | - Sunkyu Park
- Department of Forest Biomaterials, North Carolina State University, Raleigh, NC, USA
| | - Yun Li
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, National Engineering Laboratory for Tree Breeding, College of Biological Sciences and Technology, Beijing Forestry University, Beijing, China
| | - Seong H Kim
- Department of Chemical Engineering and Materials Research Institute, The Pennsylvania State University, University Park, PA, USA
| | - Mark Davis
- National Bioenergy Center, NREL, Golden, Co, USA
| | - John Ralph
- Department of Biochemistry and DOE Great Lakes Bioenergy Research Center, Wisconsin Energy Institute, University of Wisconsin, Madison, Wisconsin, WI, USA
| | - Ronald R Sederoff
- Forest Biotechnology Group, Department of Forestry and Environmental Resources, North Carolina State University, Raleigh, NC, USA
| | - Vincent L Chiang
- Department of Forest Biomaterials, North Carolina State University, Raleigh, NC, USA
- Forest Biotechnology Group, Department of Forestry and Environmental Resources, North Carolina State University, Raleigh, NC, USA
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin, China
| | - Quanzi Li
- State Key Laboratory of Tree Genetics and Breeding, Chinese Academy of Forestry, Beijing, China
- Research Institute of Forestry, Chinese Academy of Forestry, Beijing, China
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Luo B, Chi M, Zhang Q, Li M, Chen C, Wang X, Wang S, Min D. Fabrication of Lignin-Based Nano Carbon Film-Copper Foil Composite with Enhanced Thermal Conductivity. Nanomaterials (Basel) 2019; 9:nano9121681. [PMID: 31775258 PMCID: PMC6956031 DOI: 10.3390/nano9121681] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/05/2019] [Revised: 11/20/2019] [Accepted: 11/22/2019] [Indexed: 11/21/2022]
Abstract
Technical lignin from pulping, an aromatic polymer with ~59% carbon content, was employed to develop novel lignin-based nano carbon thin film (LCF)-copper foil composite films for thermal management applications. A highly graphitized, nanoscale LCF (~80–100 nm in thickness) was successfully deposited on both sides of copper foil by spin coating followed by annealing treatment at 1000 °C in an argon atmosphere. The conditions of annealing significantly impacted the morphology and graphitization of LCF and the thermal conductivity of LCF-copper foil composite films. The LCF-modified copper foil exhibited an enhanced thermal conductivity of 478 W m−1 K−1 at 333 K, which was 43% higher than the copper foil counterpart. The enhanced thermal conductivity of the composite films compared with that of the copper foil was characterized by thermal infrared imaging. The thermal properties of the copper foil enhanced by LCF reveals its potential applications in the thermal management of advanced electronic products and highlights the potential high-value utility of lignin, the waste of pulping.
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Affiliation(s)
- Bin Luo
- College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, China; (B.L.); (M.C.); (Q.Z.); (M.L.); (C.C.); (S.W.)
- Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, Nanning 530004, China
| | - Mingchao Chi
- College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, China; (B.L.); (M.C.); (Q.Z.); (M.L.); (C.C.); (S.W.)
- Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, Nanning 530004, China
| | - Qingtong Zhang
- College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, China; (B.L.); (M.C.); (Q.Z.); (M.L.); (C.C.); (S.W.)
- Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, Nanning 530004, China
| | - Mingfu Li
- College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, China; (B.L.); (M.C.); (Q.Z.); (M.L.); (C.C.); (S.W.)
- Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, Nanning 530004, China
| | - Changzhou Chen
- College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, China; (B.L.); (M.C.); (Q.Z.); (M.L.); (C.C.); (S.W.)
- Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, Nanning 530004, China
| | - Xiluan Wang
- Beijing Key Laboratory of Lignocellulosic Chemistry, Beijing Forestry University, Beijing 100083, China;
| | - Shuangfei Wang
- College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, China; (B.L.); (M.C.); (Q.Z.); (M.L.); (C.C.); (S.W.)
- Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, Nanning 530004, China
| | - Douyong Min
- College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, China; (B.L.); (M.C.); (Q.Z.); (M.L.); (C.C.); (S.W.)
- Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, Nanning 530004, China
- Correspondence: ; Tel.: +86-0771-3949-947
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28
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Li M, Guo C, Luo B, Chen C, Wang S, Min D. Comparing impacts of physicochemical properties and hydrolytic inhibitors on enzymatic hydrolysis of sugarcane bagasse. Bioprocess Biosyst Eng 2019; 43:111-122. [PMID: 31538235 DOI: 10.1007/s00449-019-02209-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2019] [Revised: 09/01/2019] [Accepted: 09/05/2019] [Indexed: 11/29/2022]
Abstract
An autohydrolysis pretreatment with different conditions was applied to sugarcane bagasse to compare the impacts of the physicochemical properties and hydrolytic inhibitors on its enzymatic hydrolysis. The results indicate that the autohydrolysis conditions significantly affected the physicochemical properties and inhibitors, which further affected the enzymatic hydrolysis. The inhibitor amount, pore size, and crystallinity degree increased with increasing autohydrolysis severity. Furthermore, the enzymatic hydrolysis was enhanced with increasing severity owing to the removal of hemicellulose and lignin. The physicochemical obstruction impeded the enzymatic hydrolysis more than the inhibitors. The multivariate correlated component regression analysis enabled an evaluation of the correlations between the physicochemical properties (and inhibitors) and enzymatic hydrolysis for the first time. According to the results, an autohydrolysis with a severity of 4.01 is an ideal pretreatment for sugarcane bagasse for sugar production.
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Affiliation(s)
- Mingfu Li
- College of Light Industry and Food Engineering, Guangxi University, Nanning, 530004, People's Republic of China.,Guangxi Key Laboratory of Clean Pulp and Papermaking and Pollution Control, Nanning, 530004, People's Republic of China
| | - Chenyan Guo
- College of Light Industry and Food Engineering, Guangxi University, Nanning, 530004, People's Republic of China.,Guangxi Key Laboratory of Clean Pulp and Papermaking and Pollution Control, Nanning, 530004, People's Republic of China
| | - Bin Luo
- College of Light Industry and Food Engineering, Guangxi University, Nanning, 530004, People's Republic of China.,Guangxi Key Laboratory of Clean Pulp and Papermaking and Pollution Control, Nanning, 530004, People's Republic of China
| | - Changzhou Chen
- College of Light Industry and Food Engineering, Guangxi University, Nanning, 530004, People's Republic of China.,Guangxi Key Laboratory of Clean Pulp and Papermaking and Pollution Control, Nanning, 530004, People's Republic of China
| | - Shuangfei Wang
- College of Light Industry and Food Engineering, Guangxi University, Nanning, 530004, People's Republic of China.,Guangxi Key Laboratory of Clean Pulp and Papermaking and Pollution Control, Nanning, 530004, People's Republic of China
| | - Douyong Min
- College of Light Industry and Food Engineering, Guangxi University, Nanning, 530004, People's Republic of China. .,Guangxi Key Laboratory of Clean Pulp and Papermaking and Pollution Control, Nanning, 530004, People's Republic of China.
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29
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Wan G, Zhang Q, Li M, Jia Z, Guo C, Luo B, Wang S, Min D. How Pseudo-lignin Is Generated during Dilute Sulfuric Acid Pretreatment. J Agric Food Chem 2019; 67:10116-10125. [PMID: 31442037 DOI: 10.1021/acs.jafc.9b02851] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Pseudo-lignin is generated from lignocellulose biomass during pretreatment with dilute sulfuric acid and has a significant inhibitory effect on cellulase. However, the mechanism of pseudo-lignin generation remains unclear. The following main points have been addressed to help elucidate the pseudo-lignin generation pathway. Cellulose and xylan were pretreated with sulfuric acid at different concentrations; aliquots were periodically collected; and the changes in the byproducts of the prehydrolysate were quantified. Milled wood lignin (MWL) mixed with cellulose and xylan was pretreated to evaluate the impact of lignin on pseudo-lignin generation. Furfural, 5-hydroxymethylfurfural, and MWL were pretreated as model compounds to investigate pseudo-lignin generation. The result indicated that the increasing acid concentration significantly promoted the generation of pseudo-lignin. When the acid concentration was increased from 0 to 1.00 wt %, pseudo-lignin was increased from 1.36 to 4.05 g. In addition, lignin promoted the pseudo-lignin generation through the condensation between lignin and the generated intermediates.
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Affiliation(s)
- Guangcong Wan
- College of Light Industry and Food Engineering , Guangxi University , Nanning , Guangxi 530004 , People's Republic of China
- Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control , Nanning , Guangxi 530004 , People's Republic of China
| | - Qingtong Zhang
- College of Light Industry and Food Engineering , Guangxi University , Nanning , Guangxi 530004 , People's Republic of China
- Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control , Nanning , Guangxi 530004 , People's Republic of China
| | - Mingfu Li
- College of Light Industry and Food Engineering , Guangxi University , Nanning , Guangxi 530004 , People's Republic of China
- Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control , Nanning , Guangxi 530004 , People's Republic of China
| | - Zhuan Jia
- College of Light Industry and Food Engineering , Guangxi University , Nanning , Guangxi 530004 , People's Republic of China
- Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control , Nanning , Guangxi 530004 , People's Republic of China
| | - Chenyan Guo
- College of Light Industry and Food Engineering , Guangxi University , Nanning , Guangxi 530004 , People's Republic of China
- Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control , Nanning , Guangxi 530004 , People's Republic of China
| | - Bin Luo
- College of Light Industry and Food Engineering , Guangxi University , Nanning , Guangxi 530004 , People's Republic of China
- Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control , Nanning , Guangxi 530004 , People's Republic of China
| | - Shuangfei Wang
- College of Light Industry and Food Engineering , Guangxi University , Nanning , Guangxi 530004 , People's Republic of China
- Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control , Nanning , Guangxi 530004 , People's Republic of China
| | - Douyong Min
- College of Light Industry and Food Engineering , Guangxi University , Nanning , Guangxi 530004 , People's Republic of China
- Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control , Nanning , Guangxi 530004 , People's Republic of China
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30
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Hwang J, Park N, Choi H, Hwang J, Lee S, Min D, Kim K, Park W. 564 Melasolv, a skin lightening compound with different mechanisms to regulate skin pigmentation. J Invest Dermatol 2019. [DOI: 10.1016/j.jid.2019.07.479] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Li M, Jia Z, Wan G, Wang S, Min D. Enhancing isolation of p-coumaric and ferulic acids from sugarcane bagasse by sequential hydrolysis. Chem Pap 2019. [DOI: 10.1007/s11696-019-00890-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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Choi H, Cho E, Lee S, Bae I, Min D, Oh S, Marinho P, Kim H. 890 Development of pigmented reconstructed human epidermis model containing human melanoblasts from keratinocyte culture. J Invest Dermatol 2019. [DOI: 10.1016/j.jid.2019.03.966] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Huan C, Lu C, Song B, Li PC, Ren HS, Chu YF, Min D, Wang YP, Wang P, Wang CT. The shape change index (SCI) of inferior vena cava (IVC) measuring by transabdominal ultrasound to predict the presence of septic shock in intensive care unit (ICU) patients. Eur Rev Med Pharmacol Sci 2019; 23:2505-2512. [PMID: 30964177 DOI: 10.26355/eurrev_201903_17398] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE This study is designed as prospective and observational research of patients with sepsis. It was carried out in the intensive care unit (ICU). We investigated the shape change index (SCI) of inferior vena cava (IVC) measured with trans-abdominal ultrasound to detect the signs of septic shock. The aim of this research was to find the most effective tool in predicting shock in patients compared with that of other parameters such as brain natriuretic peptide (BNP), lactate, variation index of inferior vena cava IVC-VI, and extravascular lung water index (EVLWI). PATIENTS AND METHODS We suppose that SCI can be used as the safest and most sensitive tool in the early recognition of septic dysfunction. The observational study was conducted in the Department of ICU, Shandong Provincial Hospital Affiliated to Shandong University from January 2016 to December 2017. SCI of IVC, serum lactate, BNP, IVC-VI, and EVLWI concentrations were measured in 30 sepsis patients. All studied biomarkers were analyzed and contrasted according to the score of the Sequential Organ Failure Assessment (SOFA). Pearson correlation analysis was analyzed to statistic the relationship between variables. RESULTS We showed the correlation of BNP value, lactic acid value, IVC-VI, EVLWI, and SCI of IVC in sick patients suffering septic shock. Positive correlation was observed in the BNP value, lactic acid value, IVC-VI, EVLWI, and SCI of IVC (r=0.447, p=0.013; r=0.484, p=0.007; r=0.423, p=0.023; r=0.638, p<0.001; r=0.599, p<0.001; respectively). However, the SCI and EVLWI showed a stronger correlation with the SOFA than the others. SCI of IVC, as estimated by transabdominal ultrasound, was more accurate than the other commonly used non-invasive predictors. EVLWI, as an accurate and classical predictor, was an invasive predictor. SCI of IVC was faster, more convenient and safer than the other. CONCLUSIONS SCI of IVC was faster, more convenient and safer than the other commonly used non-invasive predictors. Early recognition and diagnosis of sepsis may improve patient outcome.
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Affiliation(s)
- C Huan
- Department of Intensive Care Unit, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, P.R. China.
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Zhang Q, Li M, Guo C, Jia Z, Wan G, Wang S, Min D. Fe₃O₄Nanoparticles Loaded on Lignin Nanoparticles Applied as a Peroxidase Mimic for the Sensitively Colorimetric Detection of H₂O₂. Nanomaterials (Basel) 2019; 9:nano9020210. [PMID: 30736286 PMCID: PMC6410108 DOI: 10.3390/nano9020210] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/28/2019] [Accepted: 02/01/2019] [Indexed: 11/16/2022]
Abstract
Lignin is the second largest naturally renewable resource and is primarily a by-product of the pulp and paper industry; however, its inefficient use presents a challenge. In this work, Fe₃O₄ nanoparticles loaded on lignin nanoparticles (Fe₃O₄@LNPs) were prepared by the self-assembly method and it possessed an enhanced peroxidase-like activity. Fe₃O₄@LNPs catalyzed the oxidation of 3,3',5,5'-tetramethylbenzidine (TMB) in the presence of H₂O₂ to generate a blue color, was observable by the naked eye. Under the optimal conditions, Fe₃O₄@LNPs showed the ability of sensitive colorimetric detection of H₂O₂within a range of 5⁻100 μM and the limit of detection was 2 μM. The high catalytic activity of Fe₃O₄@LNPs allows its prospective use in a wide variety of applications, including clinical diagnosis, food safety, and environmental monitoring.
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Affiliation(s)
- Qingtong Zhang
- College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, China.
- Guangxi Key Lab of Clean Pulp & Papermaking and pollution Control, Nanning 530004, China.
| | - Mingfu Li
- College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, China.
- Guangxi Key Lab of Clean Pulp & Papermaking and pollution Control, Nanning 530004, China.
| | - Chenyan Guo
- College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, China.
- Guangxi Key Lab of Clean Pulp & Papermaking and pollution Control, Nanning 530004, China.
| | - Zhuan Jia
- College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, China.
- Guangxi Key Lab of Clean Pulp & Papermaking and pollution Control, Nanning 530004, China.
| | - Guangcong Wan
- College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, China.
- Guangxi Key Lab of Clean Pulp & Papermaking and pollution Control, Nanning 530004, China.
| | - Shuangfei Wang
- College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, China.
- Guangxi Key Lab of Clean Pulp & Papermaking and pollution Control, Nanning 530004, China.
| | - Douyong Min
- College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, China.
- Guangxi Key Lab of Clean Pulp & Papermaking and pollution Control, Nanning 530004, China.
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Min D, Cho E. RISK FACTORS FOR UNDERDIAGNOSIS OF DIABETES: BASED ON THE KOREAN NATIONAL HEALTH AND NUTRITION EXAMINATION SURVEY. Innov Aging 2018. [DOI: 10.1093/geroni/igy023.985] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- D Min
- Yonsei University College of Nursing
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Cho E, Min D, Lee K, Kim J, Chang S, Kim H, Kim S. DEVELOPMENT AND VALIDATION OF AN INSTRUMENT TO MEASURE NURSING HOME WORK ENVIRONMENT FOR NURSES. Innov Aging 2018. [DOI: 10.1093/geroni/igy023.1978] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
| | - D Min
- Yonsei University College of Nursing
| | - K Lee
- Tongmyong University Department of Nursing
| | - J Kim
- Seoil University Department of Nursing
| | - S Chang
- Woosuk university Department of Nursing
| | - H Kim
- Seoulnational University College of Nursing
| | - S Kim
- The University of North Carolina at Chapel Hill School of Nursing
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Chen T, Li Z, Zhang X, Min D, Wu Y, Wen J, Yuan T. Effects of Hydrothermal Pretreatment on the Structural Characteristics of Organosolv Lignin from Triarrhena lutarioriparia. Polymers (Basel) 2018; 10:E1157. [PMID: 30961082 PMCID: PMC6403627 DOI: 10.3390/polym10101157] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2018] [Revised: 09/26/2018] [Accepted: 10/14/2018] [Indexed: 11/16/2022] Open
Abstract
The effects of hydrothermal pretreatment (170⁻180 °C, 30⁻60 min) on the structural characteristics of enzymatic and extracted lignin from Triarrhena lutarioriparia (TL) during the integrated delignification process have been comprehensively investigated. Ion chromatography and NMR characterization showed that liquid products after mild hydrothermal process (170 °C, 30 min) were mainly composed of xylooligosaccharide (XOS) with different degrees of polymerization (DP ≥ 2). In addition, the structural changes of lignin during hydrothermal pretreatment and organic acid delignification process have been demonstrated by quantitative 2D heteronuclear single quantum coherence (2D-HSQC) and 31P-NMR techniques. Results showed that the structural changes of lignin (e.g., cleavage of β-O-4 linkages) induced by the hydrothermal pretreatment will facilitate the subsequent organic acid delignification process, and acetylated lignin could be obtained with a considerable yield, which can be used in lignin-based composite and candidate feedstock for catalytic upgrading of lignin. In short, the proposed process facilitates the producing of XOS and acetylated lignin for lignin valorization.
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Affiliation(s)
- Tianying Chen
- Beijing Key Laboratory of Lignocellulosic Chemistry, Beijing Forestry University, Beijing 100083, China.
| | - Zhiwen Li
- Beijing Key Laboratory of Lignocellulosic Chemistry, Beijing Forestry University, Beijing 100083, China.
| | - Xueming Zhang
- Beijing Key Laboratory of Lignocellulosic Chemistry, Beijing Forestry University, Beijing 100083, China.
| | - Douyong Min
- Guangxi Key Laboratory of Clean Pulp and Papermaking and Pollution Control, Nanning 530004, China.
| | - Yuying Wu
- Beijing Key Laboratory of Lignocellulosic Chemistry, Beijing Forestry University, Beijing 100083, China.
| | - Jialong Wen
- Beijing Key Laboratory of Lignocellulosic Chemistry, Beijing Forestry University, Beijing 100083, China.
| | - Tongqi Yuan
- Beijing Key Laboratory of Lignocellulosic Chemistry, Beijing Forestry University, Beijing 100083, China.
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Lee S, Bae I, Lee E, Min D, Park N, Choi S, Cho G, Lee T. 1116 The extract of Ganoderma lucidum inhibits MMP-1 expression through suppression of ERK activation in UVB irradiated dermal fibroblast and skin equivalent model. J Invest Dermatol 2018. [DOI: 10.1016/j.jid.2018.03.1130] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Jia Z, Li M, Wan G, Luo B, Guo C, Wang S, Min D. Improving the homogeneity of sugarcane bagasse kraft lignin through sequential solvents. RSC Adv 2018; 8:42269-42279. [PMID: 35558406 PMCID: PMC9092080 DOI: 10.1039/c8ra08595a] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2018] [Accepted: 12/11/2018] [Indexed: 11/26/2022] Open
Abstract
The heterogeneous features of lignin, especially the wide distribution of its molecular weight, limit its high value-added application. To improve the homogeneity of lignin, sugarcane bagasse kraft lignin (KL) dissolved in methanol/acetone (7 : 3, v/v) was successively fractionated into four fractions (i.e.., F1, F2, F3, and F4) with various organic solvents of decreasing dissolving capacity (i.e.., ethyl acetate, ethyl acetate/petroleum ether 1 : 1 v/v, and petroleum ether). The yields of the four fractions (F1, F2, F3, and F4) were 59.6, 28.4, 10.8, and 1.2% that of KL, respectively. Gel permeation chromatography (GPC) analysis indicated the molecular weight of each fraction decreased from F1 to F4. All fractions had a lower polydispersity than KL. KL and the fractions were comprehensively characterized by chemical composition analysis, elemental composition analysis (EA), methoxyl group analysis, Fourier transform infrared spectroscopy (FT-IR), nitrobenzene oxidation analysis (NBO), and nuclear magnetic resonance (NMR) including 31P and 1H–13C HSQC NMR. The results showed that the methoxyl group, hydroxyl group, interunit linkages, and thermal properties of the fractions varied with the molecular weight. The homogeneity of lignin was improved through solvent fractionation. The heterogeneous features of lignin, especially the wide distribution of its molecular weight, limit its high value-added application.![]()
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Affiliation(s)
- Zhuan Jia
- College of Light Industry and Food Engineering
- Guangxi University
- Nanning 530004
- PR China
- Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control
| | - Mingfu Li
- College of Light Industry and Food Engineering
- Guangxi University
- Nanning 530004
- PR China
- Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control
| | - Guangcong Wan
- College of Light Industry and Food Engineering
- Guangxi University
- Nanning 530004
- PR China
- Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control
| | - Bin Luo
- College of Light Industry and Food Engineering
- Guangxi University
- Nanning 530004
- PR China
- Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control
| | - Chenyan Guo
- College of Light Industry and Food Engineering
- Guangxi University
- Nanning 530004
- PR China
- Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control
| | - Shuangfei Wang
- College of Light Industry and Food Engineering
- Guangxi University
- Nanning 530004
- PR China
- Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control
| | - Douyong Min
- College of Light Industry and Food Engineering
- Guangxi University
- Nanning 530004
- PR China
- Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control
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Abstract
As a result of the varying degrees of light scattering on surface, nanopapers prepared by filtration and casting present different optical properties.
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Affiliation(s)
- Weisheng Yang
- College of Light Industry Science and Engineering
- Nanjing Forestry University
- Nanjing
- China
| | - Liang Jiao
- College of Light Industry Science and Engineering
- Nanjing Forestry University
- Nanjing
- China
| | | | - Zhulan Liu
- College of Light Industry Science and Engineering
- Nanjing Forestry University
- Nanjing
- China
| | - Hongqi Dai
- College of Light Industry Science and Engineering
- Nanjing Forestry University
- Nanjing
- China
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Choi H, Park N, Min D, Bae I, Kim Y, Lee J. 558 The effects of inaudible ultrasound on human skin regeneration. J Invest Dermatol 2016. [DOI: 10.1016/j.jid.2016.06.582] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Huang C, He J, Min D, Lai C, Yong Q. Understanding the Nonproductive Enzyme Adsorption and Physicochemical Properties of Residual Lignins in Moso Bamboo Pretreated with Sulfuric Acid and Kraft Pulping. Appl Biochem Biotechnol 2016; 180:1508-1523. [DOI: 10.1007/s12010-016-2183-8] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2016] [Accepted: 06/27/2016] [Indexed: 10/21/2022]
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Huang C, He J, Wang Y, Min D, Yong Q. Associating cooking additives with sodium hydroxide to pretreat bamboo residues for improving the enzymatic saccharification and monosaccharides production. Bioresour Technol 2015; 193:142-149. [PMID: 26133470 DOI: 10.1016/j.biortech.2015.06.073] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2015] [Revised: 06/15/2015] [Accepted: 06/16/2015] [Indexed: 06/04/2023]
Abstract
Cooking additive pulping technique is used in kraft mill to increase delignification degree and pulp yield. In this work, cooking additives were firstly applied in the sodium hydroxide pretreatment for improving the bioconversion of bamboo residues to monosaccharides. Meanwhile, steam explosion and sulfuric acid pretreatments were also carried out on the sample to compare their impacts on monosaccharides production. Results indicated that associating anthraquinone with sodium hydroxide pretreatment showed the best performance in improving the original carbohydrates recovery, delignification, enzymatic saccharification, and monosaccharides production. After consecutive pretreatment and enzymatic saccharification process, 347.49 g, 307.48 g, 142.93 g, and 87.15 g of monosaccharides were released from 1000 g dry bamboo residues pretreated by sodium hydroxide associating with anthraquinone, sodium hydroxide, steam explosion and sulfuric acid, respectively. The results suggested that associating cooking additive with sodium hydroxide is an effective pretreatment for bamboo residues to enhance enzymatic saccharification for monosaccharides production.
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Affiliation(s)
- Caoxing Huang
- College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Juan He
- College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Yan Wang
- College of Light Industry Science and Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Douyong Min
- College of Light Industry Science and Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Qiang Yong
- College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China.
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Vu D, Shah T, Ansari J, Naraghi R, Min D. Efficacy of intravenous immunoglobulin in the treatment of persistent BK viremia and BK virus nephropathy in renal transplant recipients. Transplant Proc 2015; 47:394-8. [PMID: 25769580 DOI: 10.1016/j.transproceed.2015.01.012] [Citation(s) in RCA: 64] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2014] [Accepted: 01/14/2015] [Indexed: 01/26/2023]
Abstract
BK virus-associated nephropathy (BKVN) can cause clinically significant viral infection in renal transplant recipients, leading to allograft dysfunction and loss. The usual management of BKVN involves the reduction of immunosuppression and the addition of leflunomide, quinolones, and cidofovir, but the rate of graft loss remains high. The aim of this study was to assess the impact of treatment with intravenous human immunoglobulin (IVIG) on the outcome of BKVN in renal transplant recipients. Upon diagnosis of BKVN, patients remained on anti-polyomavirus treatment, consisting of the reduction of immunosuppression and the use of leflunomide therapy. Treatment with IVIG was given only to patients who did not respond to 8 weeks of the adjustment of immunosuppression and leflunomide. All 30 patients had persistent BKV viremia and BKVN with their mean BK viral loads higher than the baseline (range, 15,000-2 million copies/mL). Mean peak BK load was 205,314 copies/mL compared with 697 copies/mL after 1 year of follow-up. Twenty-seven patients (90%) had a positive response in clearing viremia. The actuarial patient and graft survival rates after 12 months were 100% and 96.7%, respectively. IVIG administration appeared to be safe and effective in treating BKV viremia and BKVN and preventing graft loss in patients who had inadequate response to immunosuppression reduction and leflunomide therapy.
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Affiliation(s)
- D Vu
- American University of Health Sciences, Signal Hill, California, United States; National Institute of Transplantation, Los Angeles, California, United States; Western University of Health Sciences, Pomona, California, United States; Transplant Research Institute, Los Angeles, California, United States; St.Vincent Medical Center, Los Angeles, California, United States
| | - T Shah
- Western University of Health Sciences, Pomona, California, United States; Transplant Research Institute, Los Angeles, California, United States; St.Vincent Medical Center, Los Angeles, California, United States; University of Southern California, Los Angeles, California, United States
| | - J Ansari
- Transplant Research Institute, Los Angeles, California, United States
| | - R Naraghi
- Transplant Research Institute, Los Angeles, California, United States; St.Vincent Medical Center, Los Angeles, California, United States
| | - D Min
- Western University of Health Sciences, Pomona, California, United States; St.Vincent Medical Center, Los Angeles, California, United States.
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Huang C, He J, Li X, Min D, Yong Q. Facilitating the enzymatic saccharification of pulped bamboo residues by degrading the remained xylan and lignin-carbohydrates complexes. Bioresour Technol 2015; 192:471-7. [PMID: 26080104 DOI: 10.1016/j.biortech.2015.06.008] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2015] [Revised: 06/01/2015] [Accepted: 06/02/2015] [Indexed: 05/24/2023]
Abstract
Kraft pulping was performed on bamboo residues and its impact on the chemical compositions and the enzymatic digestibility of the samples were investigated. To improve the digestibility of sample by degrading the xylan and lignin-carbohydrates complexes (LCCs), xylanase and α-L-arabinofuranosidase (AF) were supplemented with cellulase. The results showed more carbohydrates were remained in the samples pulped with low effective alkali (EA) charge, compared to conventional kraft pulping. When 120 IU/g xylanase and 15 IU/g AF were supplemented with 20 FPU/g cellulase, the xylan degradation yield of the sample pulped with 12% EA charge increased from 68.20% to 88.35%, resulting in an increased enzymatic saccharification efficiency from 58.98% to 83.23%. The amount of LCCs in this sample decreased from 8.63/100C9 to 2.99/100C9 after saccharification with these enzymes. The results indicated that degrading the remained xylan and LCCs in the pulp could improve its enzymatic digestibility.
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Affiliation(s)
- Caoxing Huang
- College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Juan He
- College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Xin Li
- College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Douyong Min
- College of Light Industry Science and Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Qiang Yong
- College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China.
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Vu D, Shah T, Ansari J, Sakharkar P, Yasir Q, Naraghi R, Hutchinson I, Min D. Interferon-gamma gene polymorphism +874 A/T is associated with an increased risk of cytomegalovirus infection among Hispanic renal transplant recipients. Transpl Infect Dis 2014; 16:724-32. [DOI: 10.1111/tid.12285] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2013] [Revised: 04/25/2014] [Accepted: 06/21/2014] [Indexed: 11/30/2022]
Affiliation(s)
- D. Vu
- Mendez National Institute of Transplantation; Los Angeles California USA
- Western University of Health Sciences; Pomona California USA
- Transplant Research Institute; Los Angeles California USA
- St. Vincent Medical Center; Los Angeles California USA
| | - T. Shah
- Western University of Health Sciences; Pomona California USA
- Transplant Research Institute; Los Angeles California USA
- St. Vincent Medical Center; Los Angeles California USA
- University of Southern California; Los Angeles California USA
| | - J. Ansari
- Western University of Health Sciences; Pomona California USA
| | - P. Sakharkar
- Roosevelt University College of Pharmacy; Schaumburg Illinois USA
| | - Q. Yasir
- Roosevelt University College of Pharmacy; Schaumburg Illinois USA
| | - R. Naraghi
- Transplant Research Institute; Los Angeles California USA
- St. Vincent Medical Center; Los Angeles California USA
| | - I. Hutchinson
- Mendez National Institute of Transplantation; Los Angeles California USA
- University of Southern California; Los Angeles California USA
| | - D. Min
- Western University of Health Sciences; Pomona California USA
- St. Vincent Medical Center; Los Angeles California USA
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Min D, Lv XB, Wang X, Zhang B, Meng W, Yu F, Hu H. Downregulation of miR-302c and miR-520c by 1,25(OH)2D3 treatment enhances the susceptibility of tumour cells to natural killer cell-mediated cytotoxicity. Br J Cancer 2013; 109:723-30. [PMID: 23820258 PMCID: PMC3738147 DOI: 10.1038/bjc.2013.337] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2013] [Revised: 04/17/2013] [Accepted: 06/06/2013] [Indexed: 01/29/2023] Open
Abstract
Background: NKG2D recognises several ligands, including polymorphic major histocompatibility complex class I chain-related chain-related proteins A and B (MICA/B) and unique long 16-binding proteins (ULBPs). These ligands are present on cancer cells and are recognised by NKG2D in a cell-structure-sensing manner, triggering natural killer (NK) cell cytotoxicity. However, the mechanisms that control the expression of NKG2D ligands in malignant cells are poorly understood. 1-α,25-Dihydroxyvitamin D3 (1,25(OH)2D3) was recently shown to enhance the susceptibility of melanoma cells to the cytotoxicity of NK cells. However, the function of 1,25(OH)2D3 in other cancers and its potential mechanisms of action remain unknown. Methods: The expression levels of miR-302c and miR-520c in Kasumi-1, K562, MCF7 and MDA-MB-231 cells were evaluated using quantitative real-time PCR. The targets of miR-302c and miR-520c were confirmed by luciferase reporter assay. The killing effects of NK92 cells against Kasumi-1, K562, MCF7 and MDA-MB-231 cells were examined using the CytoTox 96 Non-Radioactive Cytotoxicity Assay. The levels of cytokines IFN-γ and granzyme B, which indicate the activation of NK cells, were also measured by enzyme-linked immunosorbent assay. Results: Treatment with 1,25(OH)2D3 enhanced the susceptibility of both the haematological tumour cell line Kasumi-1 and solid tumour cell line MDA-MB-231 to NK92 cells. miR-302c and miR-520c expression was induced, and their levels inversely correlated with the levels of NKG2D ligands MICA/B and ULBP2 upon 1,25(OH)2D3 treatment. A luciferase reporter assay revealed that miR-302c and miR-520c directly targeted the 3′-UTRs of MICA/B and ULBP2 and negatively regulated the expression of MIA/B and ULBP2. Moreover, upregulation of miR-302c or miR-520c by transfection of their mimics remarkably reduced the viability of Kasumi-1 cells upon NK cell co-incubation. By contrast, the suppression of the activity of miR-302c or miR-520c by their respective antisense oligonucleotides improved the resistance of Kasumi-1 cells to NK cells. Conclusion: 1,25(OH)2D3 facilitates the immuno-attack of NK cells against malignant cells partly through downregulation of miR-302c and miR-520c and hence upregulation of the NKG2D ligands MICA/B and ULBP2.
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Affiliation(s)
- D Min
- Department of Oncology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China
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Min D, Li Q, Jameel H, Chiang V, Chang HM. The cellulase-mediated saccharification on wood derived from transgenic low-lignin lines of black cottonwood (Populus trichocarpa). Appl Biochem Biotechnol 2012; 168:947-55. [PMID: 22903324 DOI: 10.1007/s12010-012-9833-2] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2011] [Accepted: 08/06/2012] [Indexed: 10/28/2022]
Abstract
Downregulated lignin transgenic black cottonwood (Populus trichocarpa) was used to elucidate the effect of lignin and xylan content on enzymatic saccharification. The lignin contents of three transgenic samples (4CL1-1, 4CL1-4, and CH8-1-4) were 19.3, 16.7, and 15.0 %, respectively, as compared with the wild type (21.3 %). The four pretreatments were dilute acid (0.1 % sulfuric acid, 185 °C, 30 min), green liquor (6 % total titratable alkali, 25 % sulfidity based on TTA, 185 °C, and 15 min.), autohydrolysis (185 °C, 30 min), and ozone delignification (25 °C, 30 min). Following the pretreatment, enzymatic saccharification was carried out using an enzyme charge of 5 FPU/g of substrates. The removal of lignin and hemicellulose varies with both the types of pretreatments and the lignin content of the transgenic trees. Due to the greatest removal of lignin, green liquor induced the highest sugar production and saccharification efficiency, followed by acid, ozone, and autohydrolysis in descending order. The results indicated that lignin is the main recalcitrance of biomass degradation. At a given lignin content, pretreatment with ozone delignification had lower saccharification efficiency than the other pretreatment methods due to higher xylan content.
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Affiliation(s)
- Douyong Min
- Department of Forest Biomaterials, North Carolina State University, Raleigh, NC 27695, USA.
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Alvares M, Min D, Hilton K, Walton T, Khan D. Modifying Target Doses and Premedication Protocols Results in Less Systemic Reactions to Aeroallergen Rush Immunotherapy (RIT). J Allergy Clin Immunol 2012. [DOI: 10.1016/j.jaci.2011.12.290] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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Yoo T, Min D, Cho J, Kim H. UP-01.007 Is the Short-Term Outcome of Transurethral Resection of the Prostate Affected by Preoperative Degree of Bladder Outlet Obstruction by Urodynamic Study? Urology 2011. [DOI: 10.1016/j.urology.2011.07.559] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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