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Khan MSJ, Sidek LM, Kamal T, Asiri AM, Khan SB, Basri H, Zawawi MH, Ahmed AN. An efficient wastewater treatment through reduction of organic dyes using Ag nanoparticles supported on cellulose gum beads. Int J Biol Macromol 2024; 257:128544. [PMID: 38061525 DOI: 10.1016/j.ijbiomac.2023.128544] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2023] [Revised: 10/26/2023] [Accepted: 11/30/2023] [Indexed: 01/26/2024]
Abstract
This work reports silver nanoparticles (AgNPs) supported on biopolymer carboxymethyl cellulose beads (Ag-CMC) serves as an efficient catalyst in the reduction process of p-nitrophenol (p-NP) and methyl orange (MO). For Ag-CMC synthesis, first CMC beads were prepared by crosslinking the CMC solution in aluminium nitrate solution and then the CMC beads were introduced into AgNO3 solution to adsorb Ag ions. Field emission scanning electron microscopy (FE-SEM) analysis suggests the uniform distribution of Ag nanoparticles on the CMC beads. The X-ray photoelectron spectroscopy (XPS) and X-ray diffraction (XRD) analysis revealed the metallic and fcc planes of AgNPs, respectively, in the Ag-CMC catalyst. The Ag-CMC catalyst exhibits remarkable reduction activity for the p-NP and MO dyes with the highest rate constant (kapp) of a chemical reaction is 0.519 and 0.697 min-1, respectively. Comparative reduction studies of Ag-CMC with CMC, Fe-CMC and Co-CMC disclosed that Ag-CMC containing AgNPs is an important factore in reducing the organic pollutants like p-NP and MO dyes. During the recyclability tests, the Ag-CMC also maintained high reduction activity, which suggests that CMC protects the AgNPs from leaching during dye reduction reactions.
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Affiliation(s)
- Mohammad Sherjeel Javed Khan
- Institute of Energy Infrastructure (IEI), Universiti Tenaga Nasional (UNITEN), 43000, Selangor, Malaysia; Department of Chemistry, King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia.
| | - Lariyah Mohd Sidek
- Institute of Energy Infrastructure (IEI), Universiti Tenaga Nasional (UNITEN), 43000, Selangor, Malaysia; Department of Civil Engineering, College of Engineering, Universiti Tenaga Nasional (UNITEN), 43000, Selangor, Malaysia
| | - Tahseen Kamal
- Center of Excellence for Advanced Materials Research, King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia
| | - Abdullah M Asiri
- Department of Chemistry, King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia; Center of Excellence for Advanced Materials Research, King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia
| | - Sher Bahadar Khan
- Department of Chemistry, King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia.
| | - Hidayah Basri
- Institute of Energy Infrastructure (IEI), Universiti Tenaga Nasional (UNITEN), 43000, Selangor, Malaysia; Department of Civil Engineering, College of Engineering, Universiti Tenaga Nasional (UNITEN), 43000, Selangor, Malaysia
| | - Mohd Hafiz Zawawi
- Institute of Energy Infrastructure (IEI), Universiti Tenaga Nasional (UNITEN), 43000, Selangor, Malaysia; Department of Civil Engineering, College of Engineering, Universiti Tenaga Nasional (UNITEN), 43000, Selangor, Malaysia
| | - Ali Najah Ahmed
- Institute of Energy Infrastructure (IEI), Universiti Tenaga Nasional (UNITEN), 43000, Selangor, Malaysia; Department of Civil Engineering, College of Engineering, Universiti Tenaga Nasional (UNITEN), 43000, Selangor, Malaysia.
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Li X, Long J, Hua Y, Chen Y, Kong X, Zhang C. Protein Separation Coacervation with Carboxymethyl Cellulose of Different Substitution Degree: Noninteracting Behavior of Bowman-Birk Chymotrypsin Inhibitor. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2018; 66:4439-4448. [PMID: 29565587 DOI: 10.1021/acs.jafc.8b00091] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
We first observed that protein/polysaccharide interaction exhibited noninteracting behavior which makes Bowman-Birk chymotrypsin inhibitor (BBI) always free of complexation, being separated from another protein with similar isoelectric points, Kunitz trypsin inhibitor (KTI). Turbidity titrations showed that the electrostatic attractions were much stronger between KTI/BBI (KBi) and carboxymethyl cellulose of higher substitution degree. Unchanged chymotrypsin inhibitory activity (CIA) indicated that BBI had negligible contribution to protein recovery and trypsin inhibitory activity (TIA). Tricine-SDS-PAGE revealed that, at r = 20:1-2:1, unbound BBI was left in the supernatant when bound KTI transferred into precipitates, even if there was excess negative charge. Thus, purified KTI or BBI was achieved easily at the given conditions. The noninteracting behavior of BBI was further confirmed by ITC, where the binding enthalpy of BBI to CMC was negligible compared with the high binding affinity ( Kb) of KTI. This work will be beneficial to protein purification based on protein-polysaccharide coacervation.
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Affiliation(s)
- Xingfei Li
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology , Jiangnan University , 1800 Lihu Avenue , Wuxi , Jiangsu Province 214122 , People's Republic of China
| | - Jie Long
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology , Jiangnan University , 1800 Lihu Avenue , Wuxi , Jiangsu Province 214122 , People's Republic of China
| | - Yufei Hua
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology , Jiangnan University , 1800 Lihu Avenue , Wuxi , Jiangsu Province 214122 , People's Republic of China
| | - Yeming Chen
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology , Jiangnan University , 1800 Lihu Avenue , Wuxi , Jiangsu Province 214122 , People's Republic of China
| | - Xiangzhen Kong
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology , Jiangnan University , 1800 Lihu Avenue , Wuxi , Jiangsu Province 214122 , People's Republic of China
| | - Caimeng Zhang
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology , Jiangnan University , 1800 Lihu Avenue , Wuxi , Jiangsu Province 214122 , People's Republic of China
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Sommer S, Dickescheid C, Harbertson JF, Fischer U, Cohen SD. Rationale for Haze Formation after Carboxymethyl Cellulose (CMC) Addition to Red Wine. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2016; 64:6879-6887. [PMID: 27571332 DOI: 10.1021/acs.jafc.6b02479] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The aim of this study was to identify the source of haze formation in red wine after the addition of carboxymethyl cellulose (CMC) and to characterize the dynamics of precipitation. Ninety commercial wines representing eight grape varieties were collected, tested with two commercial CMC products, and analyzed for susceptibility to haze formation. Seventy-four of these wines showed a precipitation within 14 days independent of the CMC product used. The precipitates of four representative samples were further analyzed for elemental composition (CHNS analysis) and solubility under different conditions to determine the nature of the solids. All of the precipitates were composed of approximately 50% proteins and 50% CMC and polyphenols. It was determined that the interactions between CMC and bovine serum albumin are pH dependent in wine-like model solution. Furthermore, it was found that the color loss associated with CMC additions required the presence of proteins and cannot be observed with CMC and anthocyanins alone.
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Affiliation(s)
- Stephan Sommer
- Fermentation Sciences, Appalachian State University , 730 Rivers Street, Boone, North Carolina 28608, United States
| | - Christian Dickescheid
- Institute for Viticulture and Enology , Breitenweg 71, 67435 Neustadt/Weinstraße, Germany
| | - James F Harbertson
- Viticulture and Enology Program, Wine Science Center, Washington State University , Richland, Washington 99354, United States
| | - Ulrich Fischer
- Institute for Viticulture and Enology , Breitenweg 71, 67435 Neustadt/Weinstraße, Germany
| | - Seth D Cohen
- Fermentation Sciences, Appalachian State University , 730 Rivers Street, Boone, North Carolina 28608, United States
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Tan J, Liu R, Wang W, Liu W, Tian Y, Wu M, Huang Y. Controllable aggregation and reversible pH sensitivity of AuNPs regulated by carboxymethyl cellulose. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2010; 26:2093-2098. [PMID: 19722539 DOI: 10.1021/la902593e] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
A pH-sensitive gold nanoparticle-cysteamine/carboxymethyl cellulose (Au-CA/CMC) dispersion system was prepared by a simple approach. Gold nanoparticles (AuNPs) were first synthesized by directly reducing chloroauric acid (HAuCl(4)) with sodium carboxymethyl cellulose (CMC). Then the AuNPs were decorated by an electrostatic compound of cysteamine hydrochloride (CA) and sodium carboxymethyl cellulose (CMC) through ligand exchange to get the assembly of Au-CA/CMC. The Au-CA/CMC dispersion system exhibits strongly reversible pH-responsive behavior with the aggregation of AuNPs caused by the combined action of the chain conformation change of CMC and electrostatic interactions between CA and CMC at different pH values. Finally, the reversible aggregation mechanism of AuNPs in the Au-CA/CMC dispersion system has been investigated by transmission electron microscopy (TEM) and ultraviolet-visible spectroscopy (UV-vis spectroscopy). This study provides a new method to fabricate a stimuli-responsive system free from complicated organic synthesis without using a toxic reducing agent.
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Affiliation(s)
- Junjun Tan
- State Key Laboratory of Polymer Physics and Chemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
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Weuster-Botz D, Hekmat D, Puskeiler R, Franco-Lara E. Enabling technologies: fermentation and downstream processing. ADVANCES IN BIOCHEMICAL ENGINEERING/BIOTECHNOLOGY 2007; 105:205-47. [PMID: 17408085 DOI: 10.1007/10_2006_034] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
Efficient parallel tools for bioprocess design, consequent application of the concepts for metabolic process analysis as well as innovative downstream processing techniques are enabling technologies for new industrial bioprocesses from an engineering point of view. Basic principles, state-of-the-art techniques and cutting-edge technologies are briefly reviewed. Emphasis is on parallel bioreactors for bioprocess design, biochemical systems characterization and metabolic control analysis, as well as on preparative chromatography, affinity filtration and protein crystallization on a process scale.
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Affiliation(s)
- Dirk Weuster-Botz
- Lehrsthul für Bioverfahrenstechnik, Technischen Universität München, Boltzmannstr. 15, 85748 Garching, Germany.
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Hilbrig F, Freitag R. Protein purification by affinity precipitation. J Chromatogr B Analyt Technol Biomed Life Sci 2003; 790:79-90. [PMID: 12767322 DOI: 10.1016/s1570-0232(03)00081-3] [Citation(s) in RCA: 87] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Developing the most efficient strategy for the purification of a (recombinant) protein especially at large scale remains a challenge. A typical problem of the downstream process of mammalian cell products is, for instance, the early capture of the highly diluted product from the complex process stream. Affinity precipitation has been suggested in this context. The technique is known for over 20 years, but has recently received more attention due to the development of new materials for its implementation, but also because it seems ideally suited to specific product capture at large scale. The present review gives a comprehensive overview over this technique. Besides an introduction to the basic principle and a brief summary of the historical development, the main focus is on the current state-of-art of the technique, the available materials, important recent applications, as well as process design strategies and operating procedures. Special consideration is given to affinity precipitation for product recovery at large scale.
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Affiliation(s)
- Frank Hilbrig
- Laboratory of Chemical Biotechnology, Institute of Chemical and Biological Process Science, Faculty of Basic Sciences, Swiss Federal Institute of Technology Lausanne, 1015, Ecublens, Switzerland.
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Enzyme catalyzed hydrolysis of esters using reversibly soluble polymer conjugated lipases. Enzyme Microb Technol 2002. [DOI: 10.1016/s0141-0229(01)00463-x] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Lajinian S, Hudson S, Applewhite L, Feldman J, Minkoff HL. An association between the heat-humidity index and preterm labor and delivery: a preliminary analysis. Am J Public Health 1997; 87:1205-7. [PMID: 9240114 PMCID: PMC1380898 DOI: 10.2105/ajph.87.7.1205] [Citation(s) in RCA: 57] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
OBJECTIVES The goal of this study was to determine whether a relationship exists between heat-humidity indexes and rates of preterm labor and preterm delivery. METHODS Preterm labor and delivery rates were compared during the 2 summer and 2 winter weeks with the highest and lowest heat-humidity indexes for each season. RESULTS The rate of preterm labor increased consistently from 1.23% to 3.00% as the heat-humidity index rose. When preterm births were examined, the trend was similar but not statistically significant. CONCLUSIONS Given the public health import of preterm labor and the frequency with which pregnant women may be exposed to extremes of heat, studies designed to confirm or refuse our preliminary observations are warranted.
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Affiliation(s)
- S Lajinian
- State University of New York Health Science Center, Brooklyn, USA
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