1
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Pan T, Wang X, Zhu J, Wang H. Preparation of bright yellow color sodium alginate solution. Carbohydr Polym 2024; 337:122169. [PMID: 38710560 DOI: 10.1016/j.carbpol.2024.122169] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2023] [Revised: 04/06/2024] [Accepted: 04/14/2024] [Indexed: 05/08/2024]
Abstract
Sodium alginate (SA) is a marine polysaccharide biomass material that is environmentally friendly and exhibits color-changing properties under certain conditions. In this study, we have discovered sodium alginate solution to be chromogenic under four conditions, namely alkali-chromogenic, thermo-chromogenic, force-chromogenic and photo-chromogenic. Under simple strong alkaline conditions, sodium alginate forms clusters of blue light-absorbing chromogenic aggregates, which exhibit a bright yellow color at a certain size. Under different temperature conditions, SA shows varying shades of yellow, and the color tends to stabilize after 48 h of resting. The aggregates can be dispersed by stirring, which changes SA from yellow to colorless. The yellow color can then be recovered after resting. Additionally, exposure to sunlight can cause the yellow SA to fade, but the color can be restored by reheating. Therefore, the force-chromogenic and photo-chromogenic properties are reversible. This makes it a promising material for use in color-developing and indicating materials. It is expected to become a sodium alginate cluster pigment with broad application prospects in the future.
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Affiliation(s)
- Tongtong Pan
- Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, China
| | - Xiao Wang
- Key Laboratory of Marine Environmental Corrosion and Bio-fouling, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China
| | - Jiaxin Zhu
- Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, China
| | - Haizeng Wang
- Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, China.
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Wang W, Fu Y, Xu J, Gao X, Fu X, Wang L. Optimization of hydrolysis conditions of alginate based on high performance liquid chromatography. Heliyon 2024; 10:e29738. [PMID: 38699043 PMCID: PMC11064077 DOI: 10.1016/j.heliyon.2024.e29738] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2023] [Revised: 04/08/2024] [Accepted: 04/15/2024] [Indexed: 05/05/2024] Open
Abstract
Alginate is the most abundant polysaccharide compound in brown algae, which is widely used in various fields. At present, the determination of the content of alginate is mostly carried out using sulfuric acid and trifluoroacetic acid hydrolysis followed by the determination of the content, but the results are not satisfactory, and there are problems such as low hydrolysis degree and low recovery rate. Therefore, in this study, based on the optimization of high performance liquid chromatographic conditions for pre-column derivatization of 1-phenyl-3-methyl-5-pyrazolone (PMP), the hydrolysis effects of sulfuric acid, trifluoroacetic acid (TFA), oxalic acid, and formic acid were compared and the hydrolysis conditions were optimized. The results showed that formic acid was the best hydrolyzing acid. The optimal hydrolysis conditions were 95 % formic acid at 110 °C for 10 h. The hydrolysis effect was stable, with high recovery and low destruction of monosaccharides, which made it possible to introduce formic acid into the subsequent polysaccharide hydrolysis. The pre-column derivatization high performance liquid chromatography method established in this study was accurate and reliable, and the hydrolysis acid with better effect was screened, which provided a theoretical basis for the subsequent determination of alginate content.
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Affiliation(s)
| | | | - Jiachao Xu
- College of Food Science and Engineering, Ocean University of China, Qingdao, 266003, Shandong, China
| | - Xin Gao
- College of Food Science and Engineering, Ocean University of China, Qingdao, 266003, Shandong, China
| | - Xiaoting Fu
- College of Food Science and Engineering, Ocean University of China, Qingdao, 266003, Shandong, China
| | - Lei Wang
- College of Food Science and Engineering, Ocean University of China, Qingdao, 266003, Shandong, China
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3
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Moghtader F, Solakoglu S, Piskin E. Alginate- and Chitosan-Modified Gelatin Hydrogel Microbeads for Delivery of E. coli Phages. Gels 2024; 10:244. [PMID: 38667663 PMCID: PMC11049077 DOI: 10.3390/gels10040244] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2024] [Revised: 03/17/2024] [Accepted: 03/27/2024] [Indexed: 04/28/2024] Open
Abstract
Bacterial infections are among the most significant health problems/concerns worldwide. A very critical concern is the rapidly increasing number of antibiotic-resistant bacteria, which requires much more effective countermeasures. As nature's antibacterial entities, bacteriophages shortly ("phages") are very important alternatives to antibiotics, having many superior features compared with antibiotics. The development of phage-carrying controlled-release formulations is still challenging due to the need to protect their activities in preparation, storage, and use, as well as the need to create more user-friendly forms by considering their application area/site/conditions. Here, we prepared gelatin hydrogel microbeads by a two-step process. Sodium alginate was included for modification within the initial recipes, and these composite microbeads were further coated with chitosan. Their swelling ratio, average diameters, and Zeta potentials were determined, and degradations in HCl were demonstrated. The target bacteria Escherichia coli (E.coli) and its specific phage (T4) were obtained from bacterial culture collections and propagated. Phages were loaded within the microbeads with a simple method. The phage release characteristics were investigated comparatively and were demonstrated here. High release rates were observed from the gelatin microbeads. It was possible to reduce the phage release rate using sodium alginate in the recipe and chitosan coating. Using these gelatin-based microbeads as phage carrier matrices-especially in lyophilized forms-significantly improved the phage stability even at room temperature. It was concluded that phage release from gelatin hydrogel microbeads could be further controlled by alginate and chitosan modifications and that user-friendly lyophilized phage formulations with a much longer shelf life could be produced.
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Affiliation(s)
- Farzaneh Moghtader
- NanoBMT: Nanobiyomedtek Biyomedikal ve Biyoteknoloji San.Tic., Ltd. Sti., 48800 Köycegiz, Mugla, Turkey;
- Feyzciftligi A.S., 16700 Karacabey, Bursa, Turkey;
- TiPHAGE San.Tic. A.S., Teknopark İstanbul, 34906 İstanbul, Marmara, Turkey
| | | | - Erhan Piskin
- NanoBMT: Nanobiyomedtek Biyomedikal ve Biyoteknoloji San.Tic., Ltd. Sti., 48800 Köycegiz, Mugla, Turkey;
- TiPHAGE San.Tic. A.S., Teknopark İstanbul, 34906 İstanbul, Marmara, Turkey
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Zhang C, Li M, Rauf A, Khalil AA, Shan Z, Chen C, Rengasamy KRR, Wan C. Process and applications of alginate oligosaccharides with emphasis on health beneficial perspectives. Crit Rev Food Sci Nutr 2023; 63:303-329. [PMID: 34254536 DOI: 10.1080/10408398.2021.1946008] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Alginates are linear polymers comprising 40% of the dry weight of algae possess various applications in food and biomedical industries. Alginate oligosaccharides (AOS), a degradation product of alginate, is now gaining much attention for their beneficial role in food, pharmaceutical and agricultural industries. Hence this review was aimed to compile the information on alginate and AOS (prepared from seaweeds) during 1994-2020. As per our knowledge, this is the first review on the potential use of alginate oligosaccharides in different fields. The alginate derivatives are grouped according to their applications. They are involved in the isolation process and show antimicrobial, antioxidant, anti-inflammatory, antihypertension, anticancer, and immunostimulatory properties. AOS also have significant applications in prebiotics, nutritional supplements, plant growth development and others products.
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Affiliation(s)
- Chunhua Zhang
- College of Agriculture and Forestry, Pu'er University, Pu'er, Yunnan, China
| | - Mingxi Li
- Research Center of Tea and Tea Culture, College of Agronomy, Jiangxi Agricultural University, Nanchang, Jiangxi, China
| | - Abdur Rauf
- Department of Chemistry, University of Swabi, Khyber Pakhtunkhwa (KP), Pakistan
| | - Anees Ahmed Khalil
- University Institute of Diet and Nutritional Sciences, Faculty of Diet and Nutritional Sciences, The University of Lahore, Lahore, Pakistan
| | - Zhiguo Shan
- College of Agriculture and Forestry, Pu'er University, Pu'er, Yunnan, China
| | - Chuying Chen
- Research Center of Tea and Tea Culture, College of Agronomy, Jiangxi Agricultural University, Nanchang, Jiangxi, China
| | - Kannan R R Rengasamy
- Green Biotechnologies Research Centre of Excellence, University of Limpopo, Polokwane, Sovenga, South Africa
| | - Chunpeng Wan
- Research Center of Tea and Tea Culture, College of Agronomy, Jiangxi Agricultural University, Nanchang, Jiangxi, China
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5
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Mechanism of selective hydrolysis of alginates under hydrothermal conditions. JOURNAL OF BIORESOURCES AND BIOPRODUCTS 2022. [DOI: 10.1016/j.jobab.2022.04.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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6
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Bi D, Yang X, Lu J, Xu X. Preparation and potential applications of alginate oligosaccharides. Crit Rev Food Sci Nutr 2022; 63:10130-10147. [PMID: 35471191 DOI: 10.1080/10408398.2022.2067832] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Alginate, a linear polymer consisting of β-D-mannuronic acid (M) and α-L-guluronic acid (G) with 1,4-glycosidic linkages and comprising 40% of the dry weight of algae, possesses various applications in the food and nutraceutical industries. However, the potential applications of alginate are restricted in some fields because of its low water solubility and high solution viscosity. Alginate oligosaccharides (AOS) on the other hand, have low molecular weight which result in better water solubility. Hence, it becomes a more popular target to be researched in recent years for its use in foods and nutraceuticals. AOS can be obtained by multiple degradation methods, including enzymatic degradation, from alginate or alginate-derived poly G and poly M. AOS have unique bioactivity and can bring human health benefits, which render them potentials to be developed/incorporated into functional food. This review comprehensively covers methods of the preparation and analysis of AOS, and discussed the potential applications of AOS in foods and nutraceuticals.
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Affiliation(s)
- Decheng Bi
- Shenzhen Key Laboratory of Marine Bioresources and Ecology, and Guangdong Provincial Key Laboratory for Plant Epigenetics, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen, PR China
- School of Science, Faculty of Health and Environmental Sciences, Auckland University of Technology, Auckland, New Zealand
| | - Xu Yang
- School of Science, Faculty of Health and Environmental Sciences, Auckland University of Technology, Auckland, New Zealand
| | - Jun Lu
- School of Science, Faculty of Health and Environmental Sciences, Auckland University of Technology, Auckland, New Zealand
- School of Public Health and Interdisciplinary Studies, Faculty of Health and Environmental Sciences, Auckland University of Technology, Auckland, New Zealand
- Maurice Wilkins Centre for Molecular Biodiscovery, Auckland, New Zealand
| | - Xu Xu
- Shenzhen Key Laboratory of Marine Bioresources and Ecology, and Guangdong Provincial Key Laboratory for Plant Epigenetics, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen, PR China
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Xue Z, Sun XM, Chen C, Zhang XY, Chen XL, Zhang YZ, Fan SJ, Xu F. A Novel Alginate Lyase: Identification, Characterization, and Potential Application in Alginate Trisaccharide Preparation. Mar Drugs 2022; 20:159. [PMID: 35323458 PMCID: PMC8953905 DOI: 10.3390/md20030159] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Revised: 02/12/2022] [Accepted: 02/21/2022] [Indexed: 02/04/2023] Open
Abstract
Alginate oligosaccharides (AOS) have many biological activities and significant applications in prebiotics, nutritional supplements, and plant growth development. Alginate lyases have unique advantages in the preparation of AOS. However, only a limited number of alginate lyases have been so far reported to have potentials in the preparation of AOS with specific degrees of polymerization. Here, an alginate-degrading strain Pseudoalteromonasarctica M9 was isolated from Sargassum, and five alginate lyases were predicted in its genome. These putative alginate lyases were expressed and their degradation products towards sodium alginate were analyzed. Among them, AlyM2 mainly generated trisaccharides, which accounted for 79.9% in the products. AlyM2 is a PL6 lyase with low sequence identity (≤28.3%) to the characterized alginate lyases and may adopt a distinct catalytic mechanism from the other PL6 alginate lyases based on sequence alignment. AlyM2 is a bifunctional endotype lyase, exhibiting the highest activity at 30 °C, pH 8.0, and 0.5 M NaCl. AlyM2 predominantly produces trisaccharides from homopolymeric M block (PM), homopolymeric G block (PG), or sodium alginate, with a trisaccharide production of 588.4 mg/g from sodium alginate, indicating its promising potential in preparing trisaccharides from these polysaccharides.
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Affiliation(s)
- Zhao Xue
- Life Science College, Shandong Normal University, Jinan 250014, China; (Z.X.); (X.-M.S.); (C.C.); (Y.-Z.Z.)
| | - Xiao-Meng Sun
- Life Science College, Shandong Normal University, Jinan 250014, China; (Z.X.); (X.-M.S.); (C.C.); (Y.-Z.Z.)
- College of Marine Life Sciences, and Frontiers Science Center for Deep Ocean Multispheres and Earth System, Ocean University of China, Qingdao 266003, China
- State Key Laboratory of Microbial Technology, Marine Biotechnology Research Center, Shandong University, Qingdao 266237, China; (X.-Y.Z.); (X.-L.C.)
| | - Cui Chen
- Life Science College, Shandong Normal University, Jinan 250014, China; (Z.X.); (X.-M.S.); (C.C.); (Y.-Z.Z.)
- State Key Laboratory of Microbial Technology, Marine Biotechnology Research Center, Shandong University, Qingdao 266237, China; (X.-Y.Z.); (X.-L.C.)
| | - Xi-Ying Zhang
- State Key Laboratory of Microbial Technology, Marine Biotechnology Research Center, Shandong University, Qingdao 266237, China; (X.-Y.Z.); (X.-L.C.)
| | - Xiu-Lan Chen
- State Key Laboratory of Microbial Technology, Marine Biotechnology Research Center, Shandong University, Qingdao 266237, China; (X.-Y.Z.); (X.-L.C.)
| | - Yu-Zhong Zhang
- Life Science College, Shandong Normal University, Jinan 250014, China; (Z.X.); (X.-M.S.); (C.C.); (Y.-Z.Z.)
- College of Marine Life Sciences, and Frontiers Science Center for Deep Ocean Multispheres and Earth System, Ocean University of China, Qingdao 266003, China
- State Key Laboratory of Microbial Technology, Marine Biotechnology Research Center, Shandong University, Qingdao 266237, China; (X.-Y.Z.); (X.-L.C.)
- Laboratory for Marine Biology and Biotechnology, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao 266237, China
| | - Shou-Jin Fan
- Life Science College, Shandong Normal University, Jinan 250014, China; (Z.X.); (X.-M.S.); (C.C.); (Y.-Z.Z.)
| | - Fei Xu
- State Key Laboratory of Microbial Technology, Marine Biotechnology Research Center, Shandong University, Qingdao 266237, China; (X.-Y.Z.); (X.-L.C.)
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8
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Alginate Modification and Lectin-Conjugation Approach to Synthesize the Mucoadhesive Matrix. APPLIED SCIENCES-BASEL 2021. [DOI: 10.3390/app112411818] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Alginates are natural anionic polyelectrolytes investigated in various biomedical applications, such as drug delivery, tissue engineering, and 3D bioprinting. Functionalization of alginates is one possible way to provide a broad range of requirements for those applications. A range of techniques, including esterification, amidation, acetylation, phosphorylation, sulfation, graft copolymerization, and oxidation and reduction, have been implemented for this purpose. The rationale behind these investigations is often the combination of such modified alginates with different molecules. Particularly promising are lectin conjugate macromolecules for lectin-mediated drug delivery, which enhance the bioavailability of active ingredients on a specific site. Most interesting for such application are alginate derivatives, because these macromolecules are more resistant to acidic and enzymatic degradation. This review will report recent progress in alginate modification and conjugation, focusing on alginate-lectin conjugation, which is proposed as a matrix for mucoadhesive drug delivery and provides a new perspective for future studies with these conjugation methods.
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Teng K, An Q, Chen Y, Zhang Y, Zhao Y. Recent Development of Alginate-Based Materials and Their Versatile Functions in Biomedicine, Flexible Electronics, and Environmental Uses. ACS Biomater Sci Eng 2021; 7:1302-1337. [PMID: 33764038 DOI: 10.1021/acsbiomaterials.1c00116] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Alginate is a natural polysaccharide that is easily chemically modified or compounded with other components for various types of functionalities. The alginate derivatives are appealing not only because they are biocompatible so that they can be used in biomedicine or tissue engineering but also because of the prospering bioelectronics that require various biomaterials to interface between human tissues and electronics or to serve as electronic components themselves. The study of alginate-based materials, especially hydrogels, have repeatedly found new frontiers over recent years. In this Review, we document the basic properties of alginate, their chemical modification strategies, and the recent development of alginate-based functional composite materials. The newly thrived functions such as ionically conductive hydrogel or 3D or 4D cell culturing matrix are emphasized among other appealing potential applications. We expect that the documentation of relevant information will stimulate scientific efforts to further develop biocompatible electronics or smart materials and to help the research domain better address the medicine, energy, and environmental challenges faced by human societies.
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Affiliation(s)
- Kaixuan Teng
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Sciences and Technology, China University of Geosciences, Beijing 100083, China
| | - Qi An
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Sciences and Technology, China University of Geosciences, Beijing 100083, China
| | - Yao Chen
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Sciences and Technology, China University of Geosciences, Beijing 100083, China
| | - Yihe Zhang
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Sciences and Technology, China University of Geosciences, Beijing 100083, China
| | - Yantao Zhao
- Institute of Orthopedics, Fourth Medical Center of the General Hospital of CPLA, Beijing 100048, China.,Beijing Engineering Research Center of Orthopedics Implants, Beijing 100048, China
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10
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Yue W, Zhang HH, Yang ZN, Xie Y. Preparation of low-molecular-weight sodium alginate by ozonation. Carbohydr Polym 2021; 251:117104. [PMID: 33142642 DOI: 10.1016/j.carbpol.2020.117104] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Revised: 08/31/2020] [Accepted: 09/12/2020] [Indexed: 01/31/2023]
Abstract
Low-molecular-weight sodium alginate (LMWSA) has been reported to possess unique physicochemical properties and bioactivities. There is little information available about degradation of sodium alginate by ozonation. Effect of ozonation on molecular weight, molecular weight distribution, color change, M/G ratio, and chemical structure of sodium alginate was investigated. The molecular weight of sodium alginate decreased from 972.3 to 76.7 kDa in the 80-min period of ozonation at 25 °C. Two different degradation-rate constants were calculated. Molecular weight distribution of the LMWSA changed appreciably. Ozonation cannot lead to color change of LMWSA. The M/G ratio of LMWSA was not altered significantly, compared with that of the original alginate. The FT-IR and 13C NMR spectra indicated the chemical structure of LMWSA obtained by ozonation was not altered appreciably. New insight into the ozonation of alginate will be promisingly opened up. Ozonation of sodium alginate can be a alternative for production of LMWSA.
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Affiliation(s)
- Wu Yue
- College of Chemical Engineering and Safety, Binzhou University, Binzhou, Shandong, 256603, People's Republic of China.
| | - Hong H Zhang
- College of Chemical Engineering and Safety, Binzhou University, Binzhou, Shandong, 256603, People's Republic of China
| | - Zhong N Yang
- College of Chemical Engineering and Safety, Binzhou University, Binzhou, Shandong, 256603, People's Republic of China
| | - Yan Xie
- College of Chemical Engineering and Safety, Binzhou University, Binzhou, Shandong, 256603, People's Republic of China
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11
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Zhang C, Wang W, Zhao X, Wang H, Yin H. Preparation of alginate oligosaccharides and their biological activities in plants: A review. Carbohydr Res 2020; 494:108056. [PMID: 32559511 DOI: 10.1016/j.carres.2020.108056] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2020] [Revised: 05/31/2020] [Accepted: 05/31/2020] [Indexed: 12/11/2022]
Abstract
Alginate oligosaccharide (AOS) is the degradation product of alginates extracted from brown algae. As a multifunctional oligomer, it has attracted widespread attention in plant research. Different methods of preparation generate AOS possessing diverse structural properties, and result in differences in AOS activity. In this review, the methods of preparation and characterization of AOS are briefly summarized, followed by a systematic introduction to the activity and mechanisms of AOS in plants. AOS can act as a growth promoter at different growth stages of plants. AOS also enhances resistance to pathogens, drought, salt, heavy metals and other stressors by triggering plant immunity, exerting bioactivity just like a pathogen-associated molecular pattern. In addition, AOS can regulate ABA biosynthesis and metabolite to preserve fruit quality and enhance shelf life. This review provides a comprehensive summary of the biological activity of AOS in plants, which will support research and the application of AOS treatments for plants in the future.
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Affiliation(s)
- Chunguang Zhang
- School of Biological Engineering, Dalian Polytechnic University, Dalian, 116034, China; Dalian Engineering Research Center for Carbohydrate Agricultural Preparations, Liaoning Provincial Key Laboratory of Carbohydrates, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China
| | - Wenxia Wang
- Dalian Engineering Research Center for Carbohydrate Agricultural Preparations, Liaoning Provincial Key Laboratory of Carbohydrates, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China
| | - Xiaoming Zhao
- Dalian Engineering Research Center for Carbohydrate Agricultural Preparations, Liaoning Provincial Key Laboratory of Carbohydrates, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China
| | - Hongying Wang
- School of Biological Engineering, Dalian Polytechnic University, Dalian, 116034, China.
| | - Heng Yin
- Dalian Engineering Research Center for Carbohydrate Agricultural Preparations, Liaoning Provincial Key Laboratory of Carbohydrates, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China.
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12
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Alginate hydrogels for bone tissue engineering, from injectables to bioprinting: A review. Carbohydr Polym 2020; 229:115514. [DOI: 10.1016/j.carbpol.2019.115514] [Citation(s) in RCA: 199] [Impact Index Per Article: 49.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2019] [Revised: 10/08/2019] [Accepted: 10/20/2019] [Indexed: 12/16/2022]
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13
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Zhang Z, Tang L, Bao M, Liu Z, Yu W, Han F. Functional Characterization of Carbohydrate-Binding Modules in a New Alginate Lyase, TsAly7B, from Thalassomonas sp. LD5. Mar Drugs 2019; 18:md18010025. [PMID: 31888109 PMCID: PMC7024181 DOI: 10.3390/md18010025] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Revised: 12/18/2019] [Accepted: 12/24/2019] [Indexed: 12/25/2022] Open
Abstract
Alginate lyases degrade alginate into oligosaccharides, of which the biological activities have vital roles in various fields. Some alginate lyases contain one or more carbohydrate-binding modules (CBMs), which assist the function of the catalytic modules. However, the precise function of CBMs in alginate lyases has yet to be fully elucidated. We have identified a new multi-domain alginate lyase, TsAly7B, in the marine bacterium Thalassomonas sp. LD5. This novel lyase contains an N-terminal CBM9, an internal CBM32, and a C-terminal polysaccharide lyase family 7 (PL7) catalytic module. To investigate the specific function of each of these CBMs, we expressed and characterized the full-length TsAly7B and three truncated mutants: TM1 (CBM32-PL7), TM2 (CBM9-PL7), and TM3 (PL7 catalytic module). CBM9 and CBM32 could enhance the degradation of alginate. Notably, the specific activity of TM2 was 7.6-fold higher than that of TM3. CBM32 enhanced the resistance of the catalytic module to high temperatures. In addition, a combination of CBM9 and CBM32 showed enhanced thermostability when incubated at 80 °C for 1 h. This is the first report that finds CBM9 can significantly improve the ability of enzyme degradation. Our findings provide new insight into the interrelationships of tandem CBMs and alginate lyases and other polysaccharide-degrading enzymes, which may inspire CBM fusion strategies.
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Affiliation(s)
- Zhelun Zhang
- Key Laboratory of Marine Drugs (Ministry of Education), Shandong Provincial Key Laboratory of Glycoscience and Glycoengineering, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China; (Z.Z.); (L.T.); (M.B.); (Z.L.)
- Laboratory for Marine Drugs and Bioproducts of Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China
| | - Luyao Tang
- Key Laboratory of Marine Drugs (Ministry of Education), Shandong Provincial Key Laboratory of Glycoscience and Glycoengineering, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China; (Z.Z.); (L.T.); (M.B.); (Z.L.)
- Laboratory for Marine Drugs and Bioproducts of Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China
| | - Mengmeng Bao
- Key Laboratory of Marine Drugs (Ministry of Education), Shandong Provincial Key Laboratory of Glycoscience and Glycoengineering, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China; (Z.Z.); (L.T.); (M.B.); (Z.L.)
- Laboratory for Marine Drugs and Bioproducts of Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China
| | - Zhigang Liu
- Key Laboratory of Marine Drugs (Ministry of Education), Shandong Provincial Key Laboratory of Glycoscience and Glycoengineering, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China; (Z.Z.); (L.T.); (M.B.); (Z.L.)
- Laboratory for Marine Drugs and Bioproducts of Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China
| | - Wengong Yu
- Key Laboratory of Marine Drugs (Ministry of Education), Shandong Provincial Key Laboratory of Glycoscience and Glycoengineering, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China; (Z.Z.); (L.T.); (M.B.); (Z.L.)
- Laboratory for Marine Drugs and Bioproducts of Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China
- Correspondence: (W.Y.); (F.H.); Tel.: +86-532-82032067 (F.H.)
| | - Feng Han
- Key Laboratory of Marine Drugs (Ministry of Education), Shandong Provincial Key Laboratory of Glycoscience and Glycoengineering, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China; (Z.Z.); (L.T.); (M.B.); (Z.L.)
- Laboratory for Marine Drugs and Bioproducts of Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China
- Correspondence: (W.Y.); (F.H.); Tel.: +86-532-82032067 (F.H.)
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14
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Liu J, Yang S, Li X, Yan Q, Reaney MJT, Jiang Z. Alginate Oligosaccharides: Production, Biological Activities, and Potential Applications. Compr Rev Food Sci Food Saf 2019; 18:1859-1881. [DOI: 10.1111/1541-4337.12494] [Citation(s) in RCA: 104] [Impact Index Per Article: 20.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2019] [Revised: 07/09/2019] [Accepted: 07/29/2019] [Indexed: 12/15/2022]
Affiliation(s)
- Jun Liu
- Beijing Advanced Innovation Center for Food Nutrition and Human HealthCollege of Food Science and Nutritional EngineeringChina Agricultural Univ. Beijing 100083 China
- Beijing Advanced Innovation Center for Food Nutrition and Human HealthBeijing Technology and Business Univ. Beijing 100048 China
| | - Shaoqing Yang
- Beijing Advanced Innovation Center for Food Nutrition and Human HealthCollege of Food Science and Nutritional EngineeringChina Agricultural Univ. Beijing 100083 China
| | - Xiuting Li
- Beijing Advanced Innovation Center for Food Nutrition and Human HealthBeijing Technology and Business Univ. Beijing 100048 China
| | - Qiaojuan Yan
- Bioresource Utilization LaboratoryCollege of EngineeringChina Agricultural Univ. Beijing 100083 China
| | - Martin J. T. Reaney
- Dept. of Plant SciencesUniv. of Saskatchewan Saskatoon SK S7N 5A8 Canada
- Guangdong Saskatchewan Oilseed Joint Laboratory (GUSTO)Dept. of Food Science and EngineeringJinan Univ. Guangzhou 510632 China
| | - Zhengqiang Jiang
- Beijing Advanced Innovation Center for Food Nutrition and Human HealthCollege of Food Science and Nutritional EngineeringChina Agricultural Univ. Beijing 100083 China
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15
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Chen T, Wang H, Chu Y, Boyer C, Liu J, Xu J. Photo‐Induced Depolymerisation: Recent Advances and Future Challenges. CHEMPHOTOCHEM 2019. [DOI: 10.1002/cptc.201900166] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Tao Chen
- College of Materials Science and Engineering Institute for Graphene Applied Technology Innovation Collaborative Innovation Center for Marine Biomass Fibers Materials and Textiles of Shandong Province Qingdao University Qingdao 266071 China
- Centre for Advanced Macromolecular Design and Australian Centre for Nanomedicine School of Chemical Engineering UNSW Sydney NSW 2052 Australia
| | - Huining Wang
- College of Materials Science and Engineering Institute for Graphene Applied Technology Innovation Collaborative Innovation Center for Marine Biomass Fibers Materials and Textiles of Shandong Province Qingdao University Qingdao 266071 China
| | - Yingying Chu
- Centre for Advanced Macromolecular Design and Australian Centre for Nanomedicine School of Chemical Engineering UNSW Sydney NSW 2052 Australia
| | - Cyrille Boyer
- Centre for Advanced Macromolecular Design and Australian Centre for Nanomedicine School of Chemical Engineering UNSW Sydney NSW 2052 Australia
| | - Jingquan Liu
- College of Materials Science and Engineering Institute for Graphene Applied Technology Innovation Collaborative Innovation Center for Marine Biomass Fibers Materials and Textiles of Shandong Province Qingdao University Qingdao 266071 China
| | - Jiangtao Xu
- Centre for Advanced Macromolecular Design and Australian Centre for Nanomedicine School of Chemical Engineering UNSW Sydney NSW 2052 Australia
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16
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Hagiwara Y, Higashi K, Hagita H, Uehara T, Ito D, Hanaoka H, Suzuki H, Arano Y, Toida T. Preparation of 99mTc-Labeled Mannan-S-Cysteine and Effect of Molecular Size of Mannan on Its Biodistribution. Biol Pharm Bull 2019; 42:819-826. [PMID: 31061325 DOI: 10.1248/bpb.b19-00026] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Macrophage mannose receptor (MMR/CD206) is a promising target for the detection and identification of sentinel lymph node (SLN). MMR-targeting probes have been developed using mannosylated dextran, however, impairment of efficient targeting of SLN was often caused because of retention of injection site in which macrophages and dendritic cells exist. In this study, we prepared new MMR-targeting probes from yeast mannan (85 kDa), and its bioditribution was investigated. In-vivo evaluation showed that 11.9% of injected dose of 99mTc-labeled mannan-S-cysteines (99mTc-MSCs) was accumulated in popliteal lymph node (the SLN in this model), however, significant level of radioactivity (approximately 80%) was remained in injection site. Interestingly, 99mTc-labeled low molecular weight mannan-S-cysteine mannan (99mTc-LSC) prepared from 50 and 25 kDa mannan showed a decreased specific accumulation of 99mTc-LSC in the popliteal lymph node, while the radioactivity at the injection site remained unchanged. These results suggest that the molecular size, or nature/shape of the sugar chain is important for the specific accumulation of 99mTc-MSC in popliteal lymph node.
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Affiliation(s)
- Yuki Hagiwara
- Graduate School of Pharmaceutical Sciences, Chiba University
| | - Kyohei Higashi
- Graduate School of Pharmaceutical Sciences, Chiba University.,Faculty of Pharmaceutical Sciences, Tokyo University of Science
| | - Hiraku Hagita
- Graduate School of Pharmaceutical Sciences, Chiba University
| | - Tomoya Uehara
- Graduate School of Pharmaceutical Sciences, Chiba University
| | - Daichi Ito
- Graduate School of Pharmaceutical Sciences, Chiba University
| | | | - Hiroyuki Suzuki
- Graduate School of Pharmaceutical Sciences, Chiba University
| | - Yasushi Arano
- Graduate School of Pharmaceutical Sciences, Chiba University
| | - Toshihiko Toida
- Graduate School of Pharmaceutical Sciences, Chiba University
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17
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Xia M, Kang SM, Lee GW, Huh YS, Park BJ. The recyclability of alginate hydrogel particles used as a palladium catalyst support. J IND ENG CHEM 2019. [DOI: 10.1016/j.jiec.2019.01.042] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
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18
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Li J, Cai C, Yang C, Li J, Sun T, Yu G. Recent Advances in Pharmaceutical Potential of Brown Algal Polysaccharides and their Derivatives. Curr Pharm Des 2019; 25:1290-1311. [PMID: 31237200 DOI: 10.2174/1381612825666190618143952] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2019] [Accepted: 05/31/2019] [Indexed: 02/07/2023]
Abstract
Marine plants, animals and microorganisms display steady growth in the ocean and are abundant carbohydrate resources. Specifically, natural polysaccharides obtained from brown algae have been drawing increasing attention owing to their great potential in pharmaceutical applications. This review describes the structural and biological features of brown algal polysaccharides, including alginates, fucoidans, and laminarins, and it highlights recently developed approaches used to obtain the oligo- and polysaccharides with defined structures. Functional modification of these polysaccharides promotes their advanced applications in biomedical materials for controlled release and targeted drug delivery, etc. Moreover, brown algal polysaccharides and their derivatives possess numerous biological activities with anticancer, anticoagulant, wound healing, and antiviral properties. In addition, we also discuss carbohydrate- based substrates from brown algae, which are currently in clinical and preclinical studies, as well as the marine drugs that are already on the market. The present review summarizes the recent development in carbohydratebased products from brown algae, with promising findings that could rapidly facilitate the future discovery of novel marine drugs.
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Affiliation(s)
- Jun Li
- Key Laboratory of Marine Drugs, Ministry of Education & Shandong Provincial Key Laboratory of Glycoscience and Glycotechnology, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China
| | - Chao Cai
- Key Laboratory of Marine Drugs, Ministry of Education & Shandong Provincial Key Laboratory of Glycoscience and Glycotechnology, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China
- Laboratory for Marine Drugs and Bioproducts, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266003, China
| | - Chendong Yang
- Key Laboratory of Marine Drugs, Ministry of Education & Shandong Provincial Key Laboratory of Glycoscience and Glycotechnology, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China
| | - Jianghua Li
- Key Laboratory of Marine Drugs, Ministry of Education & Shandong Provincial Key Laboratory of Glycoscience and Glycotechnology, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China
| | - Tiantian Sun
- Key Laboratory of Marine Drugs, Ministry of Education & Shandong Provincial Key Laboratory of Glycoscience and Glycotechnology, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China
| | - Guangli Yu
- Key Laboratory of Marine Drugs, Ministry of Education & Shandong Provincial Key Laboratory of Glycoscience and Glycotechnology, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China
- Laboratory for Marine Drugs and Bioproducts, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266003, China
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19
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Datta S, Das A, Sasmal P, Bhutoria S, Roy Chowdhury A, Datta P. Alginate-poly(amino acid) extrusion printed scaffolds for tissue engineering applications. INT J POLYM MATER PO 2018. [DOI: 10.1080/00914037.2018.1539988] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Sudipto Datta
- Centre for Healthcare Science and Technology, Indian Institute of Engineering Science and Technology, Shibpur, Howrah, India
| | - Ankita Das
- Centre for Healthcare Science and Technology, Indian Institute of Engineering Science and Technology, Shibpur, Howrah, India
| | - Pranabesh Sasmal
- Centre for Healthcare Science and Technology, Indian Institute of Engineering Science and Technology, Shibpur, Howrah, India
| | | | - Amit Roy Chowdhury
- Centre for Healthcare Science and Technology, Indian Institute of Engineering Science and Technology, Shibpur, Howrah, India
- Department of Aerospace Engineering and Applied Mechanics, Indian Institute of Engineering Science and Technology, Shibpur, Howrah, India
| | - Pallab Datta
- Centre for Healthcare Science and Technology, Indian Institute of Engineering Science and Technology, Shibpur, Howrah, India
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20
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Yagi H, Fujise A, Itabashi N, Ohshiro T. Characterization of a novel endo-type alginate lyase derived from Shewanella sp. YH1. J Biochem 2018; 163:341-350. [PMID: 29319800 DOI: 10.1093/jb/mvy001] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2017] [Accepted: 10/24/2017] [Indexed: 12/18/2022] Open
Abstract
Alginate, which is an anionic polysaccharide, is widely distributed in the cell wall of brown algae. Alginate and the products of its degradation (oligosaccharides) are used in stabilizers, thickeners and gelling agents, especially in the food industry. The degradation of alginate generally involves a combination of several alginate lyases (exo-type, endo-type and oligoalginate lyase). Enhancing the efficiency of the production of alginate degradation products may require the identification of novel alginate lyases with unique characteristics. In this study, we isolated an alginate-utilizing bacterium, Shewanella sp. YH1, from seawater collected off the coast of Tottori prefecture, Japan. The detected novel alginate lyase was named AlgSI-PL7, and was classified in polysaccharide lyase family 7. The enzyme was purified from Shewanella sp. YH1 and a recombinant AlgSI-PL7 was produced in Escherichia coli. The optimal temperature and pH for enzyme activity were around 45°C and 8, respectively. Interestingly, we observed that AlgSI-PL7 was not thermotolerant, but could refold to its active form following an almost complete denaturation at approximately 60°C. Moreover, the degradation of alginate by AlgSI-PL7 produced two to five oligosaccharides, implying this enzyme was an endo-type lyase. Our findings suggest that AlgSI-PL7 may be useful as an industrial enzyme.
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Affiliation(s)
- Hisashi Yagi
- Center for Research on Green Sustainable Chemistry
| | - Asako Fujise
- Department of Chemistry and Biotechnology, Graduate School of Engineering
| | - Narumi Itabashi
- Department of Biotechnology, Faculty of Engineering, Tottori University, Tottori, Japan
| | - Takashi Ohshiro
- Department of Chemistry and Biotechnology, Graduate School of Engineering
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21
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Zhu WZ, Yang GP, Zhang HH. Photochemical behavior of dissolved and colloidal organic matter in estuarine and oceanic waters. THE SCIENCE OF THE TOTAL ENVIRONMENT 2017; 607-608:214-224. [PMID: 28692892 DOI: 10.1016/j.scitotenv.2017.06.163] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2017] [Revised: 06/14/2017] [Accepted: 06/20/2017] [Indexed: 05/12/2023]
Abstract
Chromophoric dissolved organic matter (CDOM), carbohydrates, and amino acids were analyzed to investigate the photochemistry of total dissolved (<0.22μm) organic matter (DOM), high-molecular-weight (HMW, 1kDa-0.22μm) DOM and low-molecular-weight (LMW, <1kDa) DOM at stations in the Yangtze River and its coastal area, and in the Western Pacific Ocean. Results revealed that the humic-like and tryptophan-like CDOM fluorescent components in riverine, coastal, and oceanic surface waters were photodegraded during irradiation. However, the photochemical behavior of tyrosine-like component was obscured by the excessive fluorescence intensities of humic- and tryptophan-like fluorescent components. Light sensitivity varied depending on the source material; terrestrially derived DOM was more susceptible to irradiation than autochthonous DOM. In contrast to the expected photodegradation of CDOM, photo-induced synthetic reaction transformed the LMW matters to polysaccharides (PCHO) and degradation reaction decomposed the HMW DOM to Monosaccharides. Colloidal DOM preferentially underwent photodegradation, whereas permeate DOM mainly photosynthesized PCHO. The total hydrolysable amino acid (THAA) pool changed because of the additional input by the photodegradation of DOM or THAA itself. The compositions of THAA changed during the irradiation experiments, indicating that the different photochemical behavior of individual amino acids were related to their different original photoreactivities; the relatively stable amino acids (e.g., Ser and Gly) significantly accumulated during irradiation, whereas photo-active aromatic amino acids (e.g. Tyr and His) were prone to photodegradation. The data presented here demonstrated that irradiation significantly influence the conversion between dissolved and colloid organic matter. These results can promote the understanding of irradiation effect on the carbon and nitrogen cycle in riverine, estuarine and oceanic ecosystems.
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Affiliation(s)
- Wen-Zhuo Zhu
- Key Laboratory of Marine Chemistry Theory and Technology, Ocean University of China, Ministry of Education/Qingdao Collaborative Innovation Center of Marine Science and Technology, Qingdao 266100, China; Institute of Marine Chemistry, Ocean University of China, Qingdao 266100, China
| | - Gui-Peng Yang
- Key Laboratory of Marine Chemistry Theory and Technology, Ocean University of China, Ministry of Education/Qingdao Collaborative Innovation Center of Marine Science and Technology, Qingdao 266100, China; Laboratory for Marine Ecology and Environmental Science, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266200, China; Institute of Marine Chemistry, Ocean University of China, Qingdao 266100, China.
| | - Hong-Hai Zhang
- Key Laboratory of Marine Chemistry Theory and Technology, Ocean University of China, Ministry of Education/Qingdao Collaborative Innovation Center of Marine Science and Technology, Qingdao 266100, China; Laboratory for Marine Ecology and Environmental Science, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266200, China
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22
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Yagi H, Isobe N, Itabashi N, Fujise A, Ohshiro T. Characterization of a Long-Lived Alginate Lyase Derived from Shewanella Species YH1. Mar Drugs 2017; 16:md16010004. [PMID: 29280943 PMCID: PMC5793052 DOI: 10.3390/md16010004] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2017] [Revised: 12/11/2017] [Accepted: 12/13/2017] [Indexed: 01/07/2023] Open
Abstract
Polysaccharides from seaweeds are widely used in various fields, including the food, biomedical material, cosmetic, and biofuel industries. Alginate, which is a major polysaccharide in brown algae, and the products of its degradation (oligosaccharides) have been used in stabilizers, thickeners, and gelling agents, especially in the food industry. Discovering novel alginate lyases with unique characteristics for the efficient production of oligosaccharides may be relevant for the food and pharmaceutical fields. In this study, we identified a unique alginate lyase derived from an alginate-utilizing bacterium, Shewanella species YH1. The recombinant enzyme (rAlgSV1-PL7) was produced in an Escherichia coli system and it was classified in the Polysaccharide Lyase family 7. The optimal temperature and pH for rAlgSV1-PL7 activity were around 45 °C and 8, respectively. Interestingly, we observed that rAlgSV1-PL7 retained over 80% of its enzyme activity after incubation at 30 °C for at least 20 days, indicating that rAlgSV1-PL7 is a long-lived enzyme. Moreover, the degradation of alginate by rAlgSV1-PL7 produced one to four sugars because of the broad substrate specificity of this enzyme. Our findings suggest that rAlgSV1-PL7 may represent a new commercially useful enzyme.
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Affiliation(s)
- Hisashi Yagi
- Center for Research on Green Sustainable Chemistry, Tottori University, 4-101 Koyamacho-minami, Tottori-city 680-8552, Tottori Prefecture, Japan.
| | - Natsuki Isobe
- Department of Biotechnology, Faculty of Engineering, Tottori University, 4-101 Koyamacho-minami, Tottori-city 680-8552, Tottori Prefecture, Japan.
| | - Narumi Itabashi
- Department of Biotechnology, Faculty of Engineering, Tottori University, 4-101 Koyamacho-minami, Tottori-city 680-8552, Tottori Prefecture, Japan.
| | - Asako Fujise
- Department of Chemistry and Biotechnology, Graduate School of Engineering, Tottori University, 4-101 Koyamacho-minami, Tottori-city 680-8552, Tottori Prefecture, Japan.
| | - Takashi Ohshiro
- Department of Chemistry and Biotechnology, Graduate School of Engineering, Tottori University, 4-101 Koyamacho-minami, Tottori-city 680-8552, Tottori Prefecture, Japan.
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23
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Yagi H, Fujise A, Itabashi N, Ohshiro T. Purification and characterization of a novel alginate lyase from the marine bacterium Cobetia sp. NAP1 isolated from brown algae. Biosci Biotechnol Biochem 2016; 80:2338-2346. [PMID: 27648685 DOI: 10.1080/09168451.2016.1232154] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2016] [Accepted: 08/23/2016] [Indexed: 01/28/2023]
Abstract
The application of marine resources, instead of fossil fuels, for biomass production is important for building a sustainable society. Seaweed is valuable as a source of marine biomass for producing biofuels such as ethanol, and can be used in various fields. Alginate is an anionic polysaccharide that forms the main component of brown algae. Various alginate lyases (e.g. exo- and endo-types and oligoalginate lyase) are generally used to degrade alginate. We herein describe a novel alginate lyase, AlgC-PL7, which belongs to the polysaccharide lyase 7 family. AlgC-PL7 was isolated from the halophilic Gram-negative bacterium Cobetia sp. NAP1 collected from the brown algae Padina arborescens Holmes. The optimal temperature and pH for AlgC-PL7 activity were 45 °C and 8, respectively. Additionally, AlgC-PL7 was thermostable and salt-tolerant, exhibited broad substrate specificity, and degraded alginate into monosaccharides. Therefore, AlgC-PL7 is a promising enzyme for the production of biofuels.
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Affiliation(s)
- Hisashi Yagi
- a Center for Research on Green Sustainable Chemistry , Tottori University , Tottori , Japan
| | - Asako Fujise
- b Department of Chemistry and Biotechnology , Graduate School of Engineering, Tottori University , Tottori , Japan
| | - Narumi Itabashi
- c Faculty of Engineering, Department of Biotechnology , Tottori University , Tottori , Japan
| | - Takashi Ohshiro
- b Department of Chemistry and Biotechnology , Graduate School of Engineering, Tottori University , Tottori , Japan
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24
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Sato K, Tanaka K, Takata Y, Yamamoto K, Kadokawa JI. Fabrication of cationic chitin nanofiber/alginate composite materials. Int J Biol Macromol 2016; 91:724-9. [DOI: 10.1016/j.ijbiomac.2016.06.019] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2016] [Revised: 05/28/2016] [Accepted: 06/07/2016] [Indexed: 10/21/2022]
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25
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Panagos CG, August DP, Jesson C, Uhrín D. Photochemical depolymerisation of dermatan sulfate and analysis of the generated oligosaccharides. Carbohydr Polym 2015; 140:13-9. [PMID: 26876822 DOI: 10.1016/j.carbpol.2015.11.078] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2015] [Revised: 11/27/2015] [Accepted: 11/30/2015] [Indexed: 02/02/2023]
Abstract
Radical depolymerisation is the method of choice for the depolymerisation of glycosaminoglycans (GAGs), especially when enzymatic depolymerisation cannot be performed due to the lack of suitable enzymes. The established Fenton type free radical depolymerisation generates radicals from a solution of H2O2 in the presence of Cu(2+) or Fe(2+). When applied to dermatan sulfate (DS), the Fenton type depolymerisation of DS (Panagos, Thomson, Bavington, & Uhrin, 2012) produced exclusively oligosaccharides with reducing end GalNAc, which was partially oxidised to acetylgalactosaminic acid. We report here the results of the TiO2 catalysed photochemical depolymerisation of DS. NMR analysis of these DS oligosaccharides revealed the presence of reducing end IdoA, observed for the first time. The reducing end acetylgalactosaminic acid was also detected. The photochemical depolymerisation method thus enables preparation of new types of GAG oligosaccharides suitable for further biochemical and biological investigation.
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Affiliation(s)
- Charalampos G Panagos
- EastChem School of Chemistry, The University of Edinburgh, King's Buildings, David Brewster Road, Edinburgh EH9 3FJ, United Kingdom; GlycoMar Ltd, European Centre for Marine Biotechnology, Oban, Scotland PA37 1QA, United Kingdom
| | - David P August
- EastChem School of Chemistry, The University of Edinburgh, King's Buildings, David Brewster Road, Edinburgh EH9 3FJ, United Kingdom
| | - Christine Jesson
- GlycoMar Ltd, European Centre for Marine Biotechnology, Oban, Scotland PA37 1QA, United Kingdom
| | - Dušan Uhrín
- EastChem School of Chemistry, The University of Edinburgh, King's Buildings, David Brewster Road, Edinburgh EH9 3FJ, United Kingdom.
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26
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Meillisa A, Woo HC, Chun BS. Production of monosaccharides and bio-active compounds derived from marine polysaccharides using subcritical water hydrolysis. Food Chem 2015; 171:70-7. [PMID: 25308644 DOI: 10.1016/j.foodchem.2014.08.097] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2014] [Revised: 07/21/2014] [Accepted: 08/22/2014] [Indexed: 11/16/2022]
Abstract
Polysaccharides are the major components of brown seaweed, accounting for approximately 40-65% of the total mass. The majority of the brown seaweed polysaccharides consists of alginate (40% of dry matter), a linear hetero-polysaccharides commonly developed in fields. However, depolymerisation of alginate is required to recover high-value compounds. In this report, depolymerisation was performed using subcritical water hydrolysis (SWH) at 180-260°C, with a ratio of material to water of 1:25 (w/v) and 1% formic acid as a catalyst. Sugar recovery was higher at low temperatures in the presence of catalyst. The antioxidant properties of Saccharina japonica showed the best activity at 180°C in the presence of a catalyst. The mass spectra produced using MALDI-TOF showed that polysaccharides and oligosaccharides were produced during hydrothermal treatment. Hydrolysis treatment at 180°C in the presence of a catalyst may be useful for modifying the structure of S. japonica and purified alginate.
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Affiliation(s)
- Aviannie Meillisa
- Department of Food Science and Technology, Pukyong National University, 608-737, 45 Yongso-ro, Nam-gu, Busan, Republic of Korea
| | - Hee-Chul Woo
- Department of Chemical Engineering, Pukyong National University, 608-739, 365 Sinseon-ro, Nam-gu, Busan, Republic of Korea
| | - Byung-Soo Chun
- Department of Food Science and Technology, Pukyong National University, 608-737, 45 Yongso-ro, Nam-gu, Busan, Republic of Korea.
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27
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HPLC Method for Microanalysis and Pharmacokinetics of Marine Sulfated Polysaccharides, Propylene Glycol Alginate Sodium Sulfate. POLYSACCHARIDES 2015. [DOI: 10.1007/978-3-319-16298-0_48] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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28
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Liu S, Liu G, Yi Y. Novel vanadyl complexes of alginate saccharides: synthesis, characterization, and biological activities. Carbohydr Polym 2014; 121:86-91. [PMID: 25659675 DOI: 10.1016/j.carbpol.2014.11.069] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2014] [Revised: 11/26/2014] [Accepted: 11/29/2014] [Indexed: 01/02/2023]
Abstract
Vanadium compounds present many physiological functions. However, vanadium(IV) and (V) salts are difficult for gastrointestinal absorption and have strong side effects. Therefore organic oxovanadium compounds gain more attention. Vanadyl alginate polysaccharides (VAPS) and vanadyl alginate oligosaccharides (VAOS) were obtained from aqueous solutions of VOSO4 at pH 12. They were characterized by infrared spectroscopy, UV-vis spectroscopy and inductively coupled plasma-mass spectrometry (ICP-MS). The antioxidant activity of oxovanadium(IV) complexes was investigated in hydroxyl and DPPH radical scavenging systems in vitro. The results reveal that activities of VAPS and VAOS in the two systems were stronger than those of alginate polysaccharides (APS) and alginate oligosaccharides (AOS), respectively. In addition, VAPS and VAOS promoted significantly the antiproliferation of ligands of human hepatoma cell line BEL-7402. Oxovanadium(IV) complexes were potent inhibitors of protein tyrosine phosphatase 1B (PTP1B) with IC50 values in the range of 6.4-18.7μg/mL, indicated in biochemical assays. In addition, Vanadyl-alginate had no significant side effects on proliferation and viability of HL-7702 hepatic cells. In the future, they can be added to medicines and ease the growing threat that cancer and diabetes mellitus cause to human health.
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Affiliation(s)
- Shengyi Liu
- Yantai Institute of Coastal Zone Research Chinese Academy of Sciences, Yantai 264003, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Guangyang Liu
- Yantai Institute of Coastal Zone Research Chinese Academy of Sciences, Yantai 264003, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yuetao Yi
- Yantai Institute of Coastal Zone Research Chinese Academy of Sciences, Yantai 264003, China.
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29
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Wu J, Zhao X, Ren L, Xue Y, Li C, Yu G, Guan H. Determination of M/G ratio of propylene glycol alginate sodium sulfate by HPLC with pre-column derivatization. Carbohydr Polym 2014; 104:23-8. [DOI: 10.1016/j.carbpol.2014.01.011] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2013] [Revised: 12/18/2013] [Accepted: 01/05/2014] [Indexed: 11/28/2022]
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Ito K, Sakata K, Date Y, Kikuchi J. Integrated analysis of seaweed components during seasonal fluctuation by data mining across heterogeneous chemical measurements with network visualization. Anal Chem 2014; 86:1098-105. [PMID: 24401131 DOI: 10.1021/ac402869b] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Biological information is intricately intertwined with several factors. Therefore, comprehensive analytical methods such as integrated data analysis, combining several data measurements, are required. In this study, we describe a method of data preprocessing that can perform comprehensively integrated analysis based on a variety of multimeasurement of organic and inorganic chemical data from Sargassum fusiforme and explore the concealed biological information by statistical analyses with integrated data. Chemical components including polar and semipolar metabolites, minerals, major elemental and isotopic ratio, and thermal decompositional data were measured as environmentally responsive biological data in the seasonal variation. The obtained spectral data of complex chemical components were preprocessed to isolate pure peaks by removing noise and separating overlapping signals using the multivariate curve resolution alternating least-squares method before integrated analyses. By the input of these preprocessed multimeasurement chemical data, principal component analysis and self-organizing maps of integrated data showed changes in the chemical compositions during the mature stage and identified trends in seasonal variation. Correlation network analysis revealed multiple relationships between organic and inorganic components. Moreover, in terms of the relationship between metal group and metabolites, the results of structural equation modeling suggest that the structure of alginic acid changes during the growth of S. fusiforme, which affects its metal binding ability. This integrated analytical approach using a variety of chemical data can be developed for practical applications to obtain new biochemical knowledge including genetic and environmental information.
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Affiliation(s)
- Kengo Ito
- Graduate School of Medical Life Science, Yokohama City University , 1-7-29 Suehirocho, Tsurumi-ku, Yokohama 230-0045, Japan
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Xue YT, Li CX, Zhao X, Guan HS. HPLC Method for Microanalysis and Pharmacokinetics of Marine Sulfated Polysaccharide, Propylene Glycol Alginate Sodium Sulfate. POLYSACCHARIDES 2014. [DOI: 10.1007/978-3-319-03751-6_48-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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Watthanaphanit A, Saito N. Effect of polymer concentration on the depolymerization of sodium alginate by the solution plasma process. Polym Degrad Stab 2013. [DOI: 10.1016/j.polymdegradstab.2013.01.011] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Matsumoto A, Hosoyama S, Higashi K, Toida T. Simultaneous determination of uronates found in polysaccharides from natural products by HPLC with fluorometric detection. Carbohydr Res 2012; 358:82-8. [PMID: 22824507 DOI: 10.1016/j.carres.2012.06.018] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2012] [Revised: 06/26/2012] [Accepted: 06/27/2012] [Indexed: 10/28/2022]
Abstract
A sensitive high-performance liquid chromatographic (HPLC) method for the determination of uronates isolated from polysaccharides found in natural products such as glycosaminoglycans and alginate is described. Preparation of iduronate, guluronate, and mannuronate as analytical standards for high performance liquid chromatography was achieved by depolymerization of dermatan sulfate and alginate in 2.5 mol L(-1) trifluoroacetic acid at 100°C for 6h. Structures of resulting products (iduronate, guluronate, and mannuronate) were characterized by 600 MHz (1)H NMR. Five uronates (glucuronate, iduronate, mannuronate, guluronate, and galacturonate) were separated on a Dionex CarboPac PA1 column using an isocratic elution with 8 mmol L(-1) acetate buffer (pH 4.84) and were monitored by fluorescence detection using 1.5% 2-cyanoacetamide as a post-column fluorogenic reagent. As little as 50 pmol of each uronate could be detected with excitation at 331 nm and emission at 383 nm.
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Affiliation(s)
- Akihisa Matsumoto
- Graduate School of Pharmaceutical Sciences, Chiba University, Chiba, Japan
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Higashi K, Hosoyama S, Ohno A, Masuko S, Yang B, Sterner E, Wang Z, Linhardt RJ, Toida T. Photochemical Preparation of a Novel Low Molecular Weight Heparin. Carbohydr Polym 2012; 67:1737-1743. [PMID: 22205826 PMCID: PMC3245882 DOI: 10.1016/j.carbpol.2011.09.087] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
Commercial low molecular weight heparins (LMWHs) are prepared by several methods including peroxidative cleavage, nitrous acid cleavage, chemical ß-elimination, and enzymatic β-elimination. The disadvantages of these methods are that strong reaction conditions or harsh chemicals are used and these can result in decomposition or modification of saccharide units within the polysaccharide backbone. These side-reactions reduce product quality and yield. Here we show the partial photolysis of unfractionated heparin can be performed in distillated water using titanium dioxide (TiO(2)). TiO(2) is a catalyst that can be easily removed by centrifugation or filtration after the photochemical reaction takes place, resulting in highly pure products. The anticoagulant activity of photodegraded LMWH (pLMWH) is comparable to the most common commercially available LMWHs (i.e., Enoxaparin and Dalteparin). (1)H NMR spectra obtained show that pLMWH maintains the same core structure as unfractionated heparin. This photochemical reaction was investigated using liquid chromatography/mass spectrometry (LC/MS) and unlike other processes commonly used to prepare LMWHs, photochemically preparation affords polysaccharide chains of reduced length having both odd and even of saccharide residues.
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Affiliation(s)
- Kyohei Higashi
- Graduate School of Pharmaceutical Sciences, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba 260-8675, Japan
| | - Saori Hosoyama
- Graduate School of Pharmaceutical Sciences, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba 260-8675, Japan
| | - Asami Ohno
- Graduate School of Pharmaceutical Sciences, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba 260-8675, Japan
| | - Sayaka Masuko
- Department of Chemistry and Chemical Biology, Centre for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, New York 12180, USA
| | - Bo Yang
- Department of Chemistry and Chemical Biology, Centre for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, New York 12180, USA
| | - Eric Sterner
- Department of Chemical and Biological Engineering, Centre for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, New York 12180, USA
| | - Zhenyu Wang
- Department of Biology, Centre for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, New York 12180, USA
| | - Robert J. Linhardt
- Department of Chemistry and Chemical Biology, Centre for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, New York 12180, USA
- Department of Chemical and Biological Engineering, Centre for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, New York 12180, USA
- Department of Biology, Centre for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, New York 12180, USA
| | - Toshihiko Toida
- Graduate School of Pharmaceutical Sciences, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba 260-8675, Japan
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Higashi K, Ly M, Wang Z, Masuko S, Bhaskar U, Sterner E, Zhang F, Toida T, Dordick JS, Linhardt RJ. Controlled Photochemical Depolymerization of K5 Heparosan, a Bioengineered Heparin Precursor. Carbohydr Polym 2011; 86:1365-1370. [PMID: 21841848 PMCID: PMC3153860 DOI: 10.1016/j.carbpol.2011.06.042] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Heparosan is a polysaccharide, which serves as the critical precursor in heparin biosynthesis and chemoenzymatic synthesis of bioengineered heparin. Because the molecular weight of microbial heparosan is considerably larger than heparin, the controlled depolymerization of microbial heparosan is necessary prior to its conversion to bioengineered heparin. We have previously reported that other acidic polysaccharides could be partially depolymerized with maintenance of their internal structure using a titanium dioxide-catalyzed photochemical reaction. This photolytic process is characterized by the generation of reactive oxygen species that oxidize individual saccharide residues within the polysaccharide chain. Using a similar approach, a microbial heparosan from Escherichia coli K5 of molecular weight >15,000 was depolymerized to a heparosan of molecular weight 8,000. The (1)H-NMR spectra obtained showed that the photolyzed heparosan maintained the same structure as the starting heparosan. The polysaccharide chains of the photochemically depolymerized heparosan were also characterized by electrospray ionization-Fourier-transform mass spectrometry. While the chain of K5 heparosan starting material contained primarily an even number of saccharide residues, as a result of coliphage K5 lyase processing, both odd and even chain numbers were detected in the photochemically-depolymerized heparosan. These results suggest that the photochemical depolymerization of heparosan was a random process that can take place at either the glucuronic acid or the N-acetylglucosamine residue within the heparosan polysaccharide.
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Affiliation(s)
- Kyohei Higashi
- Graduate School of Pharmaceutical Sciences Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba 260-8675, Japan
| | - Mellisa Ly
- Department of Chemistry and Chemical Biology, Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, New York 12180
| | - Zhenyu Wang
- Department of Biology, Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, New York 12180, USA
| | - Sayaka Masuko
- Department of Chemistry and Chemical Biology, Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, New York 12180
| | - Ujjwal Bhaskar
- Department of Chemical and Biological Engineering, Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, New York 12180
| | - Eric Sterner
- Department of Chemical and Biological Engineering, Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, New York 12180
| | - Fuming Zhang
- Department of Chemical and Biological Engineering, Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, New York 12180
| | - Toshihiko Toida
- Graduate School of Pharmaceutical Sciences Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba 260-8675, Japan
| | - Jonathan S. Dordick
- Department of Biology, Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, New York 12180, USA
- Department of Chemical and Biological Engineering, Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, New York 12180
- Department of Biomedical Engineering, Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, New York 12180
| | - Robert J. Linhardt
- Department of Chemistry and Chemical Biology, Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, New York 12180
- Department of Biology, Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, New York 12180, USA
- Department of Chemical and Biological Engineering, Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, New York 12180
- Department of Biomedical Engineering, Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, New York 12180
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Sarasidis V, Patsios S, Karabelas A. A hybrid photocatalysis–ultrafiltration continuous process: The case of polysaccharide degradation. Sep Purif Technol 2011. [DOI: 10.1016/j.seppur.2011.04.010] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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37
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Burana-osot J, Soonthornchareonnon N, Hosoyama S, Linhardt RJ, Toida T. Partial depolymerization of pectin by a photochemical reaction. Carbohydr Res 2010; 345:1205-10. [PMID: 20451177 DOI: 10.1016/j.carres.2010.04.007] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2010] [Revised: 04/06/2010] [Accepted: 04/08/2010] [Indexed: 10/19/2022]
Abstract
Complex heterogeneous polysaccharides that comprise pectin were partially depolymerized by a photochemical reaction using ultraviolet light in the presence of titanium dioxide catalyst. In a period of 6h at pH 7, this UV/TiO(2) process decreased the average molecular weight of pectin from 400kDa to 200kDa. The characterization of the partially depolymerized pectin, which was fractionated by size-exclusion chromatography, was performed by (1)H NMR spectroscopy, and the spectra obtained showed that the resulting oligosaccharides and polysaccharides maintained the intact core structure of pectin. The monosaccharide content and depolymerization profile were determined by high-performance anion-exchange chromatography coupled with pulsed amperometric detection. This controlled photochemical depolymerization technique might be useful for preparation of pectin oligosaccharides as an ingredient in food and pharmaceutical products.
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Affiliation(s)
- Jankana Burana-osot
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Silpakorn University, Nakorn-pathom, Thailand
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