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Xue H, Liang B, Wang Y, Gao H, Fang S, Xie K, Tan J. The regulatory effect of polysaccharides on the gut microbiota and their effect on human health: A review. Int J Biol Macromol 2024; 270:132170. [PMID: 38734333 DOI: 10.1016/j.ijbiomac.2024.132170] [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: 02/25/2024] [Revised: 04/06/2024] [Accepted: 05/05/2024] [Indexed: 05/13/2024]
Abstract
Polysaccharides with low toxicity and high biological activities are a kind of biological macromolecule. Recently, growing studies have confirmed that polysaccharides could improve obesity, diabetes, tumors, inflammatory bowel disease, hyperlipidemia, diarrhea, and liver-related diseases by changing the intestinal micro-environment. Moreover, polysaccharides could promote human health by regulating gut microbiota, enhancing production of short-chain fatty acids (SCFAs), improving intestinal mucosal barrier, regulating lipid metabolism, and activating specific signaling pathways. Notably, the biological activities of polysaccharides are closely related to their molecular weight, monosaccharide composition, glycosidic bond types, and regulation of gut microbiota. The intestinal microbiota can secrete glycoside hydrolases, lyases, and esterases to break down polysaccharides chains and generate monosaccharides, thereby promoting their absorption and utilization. The degradation of polysaccharides can produce SCFAs, further regulating the proportion of gut microbiota and achieving the effect of preventing and treating various diseases. This review aims to summarize the latest studies: 1) effect of polysaccharides structures on intestinal flora; 2) regulatory effect of polysaccharides on gut microbiota; 3) effects of polysaccharides on gut microbe-mediated diseases; 4) regulation of gut microbiota on polysaccharides metabolism. The findings are expected to provide important information for the development of polysaccharides and the treatment of diseases.
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Affiliation(s)
- Hongkun Xue
- College of Traditional Chinese Medicine, Hebei University, No. 342 Yuhua East Road, Lianchi District, Baoding 071002, China
| | - Beimeng Liang
- College of Traditional Chinese Medicine, Hebei University, No. 342 Yuhua East Road, Lianchi District, Baoding 071002, China
| | - Yu Wang
- College of Traditional Chinese Medicine, Hebei University, No. 342 Yuhua East Road, Lianchi District, Baoding 071002, China
| | - Haiyan Gao
- College of Traditional Chinese Medicine, Hebei University, No. 342 Yuhua East Road, Lianchi District, Baoding 071002, China
| | - Saisai Fang
- College of Traditional Chinese Medicine, Hebei University, No. 342 Yuhua East Road, Lianchi District, Baoding 071002, China
| | - Kaifang Xie
- College of Textile and Fashion, Hunan Institute of Engineering, NO. 88 East Fuxing Road, Yuetang District, Xiangtan 411100, China
| | - Jiaqi Tan
- Medical Comprehensive Experimental Center, Hebei University, No. 342 Yuhua East Road, Lianchi District, Baoding 071002, China.
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2
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Fu YL, Shi L. Methods of study on conformation of polysaccharides from natural products: A review. Int J Biol Macromol 2024; 263:130275. [PMID: 38373563 DOI: 10.1016/j.ijbiomac.2024.130275] [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: 12/01/2023] [Revised: 02/14/2024] [Accepted: 02/16/2024] [Indexed: 02/21/2024]
Abstract
Polysaccharides from natural products play multiple roles and have extensive bioactivities in life process. Bioactivities of polysaccharides (e.g., Lentinan, Schizophyllan, Scleroglucan, Curdlan, Cinerean) have a close relation to their chain conformation. Compared to other types of polysaccharides, the conformation of β-glucan has been studied more. The major research methods of conformation of polysaccharides from natural products (Congo red experiment, circular dichroism spectrum, viscosity method, light scattering method, size exclusion chromatography, atomic force microscope), corresponding experimental schemes, and the external factors affecting polysaccharide conformation were reviewed in this paper. These research methods of conformation have been widely used, among which Congo red experiment and viscosity method are the most convenient ones to study the morphological changes of polysaccharide chains.
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Affiliation(s)
- You-Li Fu
- Qufu Normal University, Qufu 273165, China
| | - Lei Shi
- Qufu Normal University, Qufu 273165, China; School of Applied Science, Temasek Polytechnic, 529757, Singapore.
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3
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Li L, Xie J, Zhang Z, Xia B, Li Y, Lin Y, Li M, Wu P, Lin L. Recent advances in medicinal and edible homologous plant polysaccharides: Preparation, structure and prevention and treatment of diabetes. Int J Biol Macromol 2024; 258:128873. [PMID: 38141704 DOI: 10.1016/j.ijbiomac.2023.128873] [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: 07/03/2023] [Revised: 11/27/2023] [Accepted: 12/16/2023] [Indexed: 12/25/2023]
Abstract
Medicinal and edible homologs (MEHs) can be used in medicine and food. The National Health Commission announced that a total of 103 kinds of medicinal and edible homologous plants (MEHPs) would be available by were available in 2023. Diabetes mellitus (DM) has become the third most common chronic metabolic disease that seriously threatens human health worldwide. Polysaccharides, the main component isolated from MEHPs, have significant antidiabetic effects with few side effects. Based on a literature search, this paper summarizes the preparation methods, structural characterization, and antidiabetic functions and mechanisms of MEHPs polysaccharides (MEHPPs). Specifically, MEHPPs mainly regulate PI3K/Akt, AMPK, cAMP/PKA, Nrf2/Keap1, NF-κB, MAPK and other signaling pathways to promote insulin secretion and release, improve glycolipid metabolism, inhibit the inflammatory response, decrease oxidative stress and regulate intestinal flora. Among them, 16 kinds of MEHPPs were found to have obvious anti-diabetic effects. This article reviews the prevention and treatment of diabetes and its complications by MEHPPs and provides a basis for the development of safe and effective MEHPP-derived health products and new drugs to prevent and treat diabetes.
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Affiliation(s)
- Lan Li
- College of Pharmacy, Hunan University of Chinese Medicine, No. 300 Xueshi Road, Yuelu District, Changsha 410208, China; Key Laboratory for Quality Evaluation of Bulk Herbs of Hunan Province, Hunan University of Chinese Medicine, No. 300 Xueshi Road, Yuelu District, Changsha 410208, China
| | - Jingchen Xie
- College of Pharmacy, Hunan University of Chinese Medicine, No. 300 Xueshi Road, Yuelu District, Changsha 410208, China; Key Laboratory for Quality Evaluation of Bulk Herbs of Hunan Province, Hunan University of Chinese Medicine, No. 300 Xueshi Road, Yuelu District, Changsha 410208, China
| | - Zhimin Zhang
- College of Pharmacy, Hunan University of Chinese Medicine, No. 300 Xueshi Road, Yuelu District, Changsha 410208, China; Key Laboratory for Quality Evaluation of Bulk Herbs of Hunan Province, Hunan University of Chinese Medicine, No. 300 Xueshi Road, Yuelu District, Changsha 410208, China
| | - Bohou Xia
- College of Pharmacy, Hunan University of Chinese Medicine, No. 300 Xueshi Road, Yuelu District, Changsha 410208, China; Key Laboratory for Quality Evaluation of Bulk Herbs of Hunan Province, Hunan University of Chinese Medicine, No. 300 Xueshi Road, Yuelu District, Changsha 410208, China
| | - Yamei Li
- College of Pharmacy, Hunan University of Chinese Medicine, No. 300 Xueshi Road, Yuelu District, Changsha 410208, China; Key Laboratory for Quality Evaluation of Bulk Herbs of Hunan Province, Hunan University of Chinese Medicine, No. 300 Xueshi Road, Yuelu District, Changsha 410208, China
| | - Yan Lin
- College of Pharmacy, Hunan University of Chinese Medicine, No. 300 Xueshi Road, Yuelu District, Changsha 410208, China; Key Laboratory for Quality Evaluation of Bulk Herbs of Hunan Province, Hunan University of Chinese Medicine, No. 300 Xueshi Road, Yuelu District, Changsha 410208, China
| | - Minjie Li
- College of Pharmacy, Hunan University of Chinese Medicine, No. 300 Xueshi Road, Yuelu District, Changsha 410208, China; Key Laboratory for Quality Evaluation of Bulk Herbs of Hunan Province, Hunan University of Chinese Medicine, No. 300 Xueshi Road, Yuelu District, Changsha 410208, China
| | - Ping Wu
- College of Pharmacy, Hunan University of Chinese Medicine, No. 300 Xueshi Road, Yuelu District, Changsha 410208, China; Key Laboratory for Quality Evaluation of Bulk Herbs of Hunan Province, Hunan University of Chinese Medicine, No. 300 Xueshi Road, Yuelu District, Changsha 410208, China.
| | - Limei Lin
- College of Pharmacy, Hunan University of Chinese Medicine, No. 300 Xueshi Road, Yuelu District, Changsha 410208, China; Key Laboratory for Quality Evaluation of Bulk Herbs of Hunan Province, Hunan University of Chinese Medicine, No. 300 Xueshi Road, Yuelu District, Changsha 410208, China.
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Xue H, Hao Z, Gao Y, Cai X, Tang J, Liao X, Tan J. Research progress on the hypoglycemic activity and mechanisms of natural polysaccharides. Int J Biol Macromol 2023; 252:126199. [PMID: 37562477 DOI: 10.1016/j.ijbiomac.2023.126199] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2023] [Revised: 06/19/2023] [Accepted: 08/05/2023] [Indexed: 08/12/2023]
Abstract
The incidence of diabetes, as a metabolic disease characterized by high blood sugar levels, is increasing every year. The predominantly western medicine treatment is associated with certain side effects, which has prompted people to turn their attention to natural active substances. Natural polysaccharide is a safe and low-toxic natural substance with various biological activities. Hypoglycemic activity is one of the important biological activities of natural polysaccharides, which has great potential for development. A systematic review of the latest research progress and possible molecular mechanisms of hypoglycemic activity of natural polysaccharides is of great significance for better understanding them. In this review, we systematically reviewed the relationship between the hypoglycemic activity of polysaccharides and their structure in terms of molecular weight, monosaccharide composition, and glycosidic bonds, and summarized underlying molecular mechanisms the hypoglycemic activity of natural polysaccharides. In addition, the potential mechanisms of natural polysaccharides improving the complications of diabetes were analyzed and discussed. This paper provides some valuable insights and important guidance for further research on the hypoglycemic mechanisms of natural polysaccharides.
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Affiliation(s)
- Hongkun Xue
- College of Traditional Chinese Medicine, Hebei University, No. 342 Yuhua East Road, Lianchi District, Baoding 071002, China
| | - Zitong Hao
- College of Traditional Chinese Medicine, Hebei University, No. 342 Yuhua East Road, Lianchi District, Baoding 071002, China
| | - Yuchao Gao
- College of Traditional Chinese Medicine, Hebei University, No. 342 Yuhua East Road, Lianchi District, Baoding 071002, China
| | - Xu Cai
- Key Laboratory of Particle & Radiation Imaging, Ministry of Education, Department of Engineering Physics, Tsinghua University, No. 30 Shuangqing Road, Haidian District, Beijing 100084, China
| | - Jintian Tang
- Key Laboratory of Particle & Radiation Imaging, Ministry of Education, Department of Engineering Physics, Tsinghua University, No. 30 Shuangqing Road, Haidian District, Beijing 100084, China
| | - Xiaojun Liao
- College of Food Science and Nutritional Engineering, China Agricultural University, No. 17 Qinghua East Road, Haidian District, Beijing 100083, China.
| | - Jiaqi Tan
- College of Traditional Chinese Medicine, Hebei University, No. 342 Yuhua East Road, Lianchi District, Baoding 071002, China; Medical Comprehensive Experimental Center, Hebei University, No. 342 Yuhua East Road, Lianchi District, Baoding 071002, China.
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Lerbret A, Assifaoui A. How Accurate Is the Egg-Box Model in Describing the Binding of Calcium to Polygalacturonate? A Molecular Dynamics Simulation Study. J Phys Chem B 2022; 126:10206-10220. [PMID: 36411084 DOI: 10.1021/acs.jpcb.2c05374] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
We performed molecular dynamics (MD) simulations of octameric galacturonate, GalA8, chains in the presence of Ca2+ in a ratio of R = [Ca2+]/[GalA] = 0.25 in order to determine to which extent the popular "egg-box model" (EBM) is able to describe the association between Ca2+ cations and polygalacturonate (polyGalA) chains. To this aim, we slightly revised the empirical parameters for the interaction between Ca2+ and the carboxylate oxygen atoms of GalA units so as to reproduce the experimental Ca2+-GalA association constant. We also defined an ad hoc order parameter, referred to as the egg-box score (EBS), that quantifies any deviation of the local coordination geometry of calcium cations with respect to an "ideal" EBM coordination geometry. The results reveal that the local coordination geometry of Ca2+ cations bound to polyGalA chains differs from that of the EBM. Moreover, polyGalA chains exhibit significant conformational disorder, and the cross-link angles formed between polyGalA chain axes are broadly distributed. Overall, the present study suggests that the EBM fails to describe accurately the association modes between calcium and polyGalA chains at a molar ratio R of 0.25.
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Affiliation(s)
- Adrien Lerbret
- Université Bourgogne Franche-Comté, Institut Agro, UMR PAM, 1 Esplanade Erasme, 21000Dijon, France
| | - Ali Assifaoui
- Université Bourgogne Franche-Comté, Institut Agro, UMR PAM, 1 Esplanade Erasme, 21000Dijon, France
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Locust Bean Gum, a Vegetable Hydrocolloid with Industrial and Biopharmaceutical Applications. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27238265. [PMID: 36500357 PMCID: PMC9736161 DOI: 10.3390/molecules27238265] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Revised: 11/21/2022] [Accepted: 11/22/2022] [Indexed: 11/29/2022]
Abstract
Locust bean gum (LBG), a vegetable galactomannan extracted from carob tree seeds, is extensively used in the food industry as a thickening agent (E410). Its molecular conformation in aqueous solutions determines its solubility and rheological performance. LBG is an interesting polysaccharide also because of its synergistic behavior with other biopolymers (xanthan gum, carrageenan, etc.). In addition, this hydrocolloid is easily modified by derivatization or crosslinking. These LBG-related products, besides their applications in the food industry, can be used as encapsulation and drug delivery devices, packaging materials, batteries, and catalyst supports, among other biopharmaceutical and industrial uses. As the new derivatized or crosslinked polymers based on LBG are mainly biodegradable and non-toxic, the use of this polysaccharide (by itself or combined with other biopolymers) will contribute to generating greener products, considering the origin of raw materials used, the modification procedures selected and the final destination of the products.
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Westberry BP, Mansel BW, Ryan TM, Lundin L, Williams M. X-ray scattering and molecular dynamics simulations reveal the secondary structure of κ-carrageenan in the solution state. Carbohydr Polym 2022; 296:119958. [DOI: 10.1016/j.carbpol.2022.119958] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Revised: 07/31/2022] [Accepted: 08/02/2022] [Indexed: 11/02/2022]
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Yang M, Tao L, Kang XR, Li LF, Zhao CC, Wang ZL, Sheng J, Tian Y. Recent developments in Moringa oleifera Lam. polysaccharides: A review of the relationship between extraction methods, structural characteristics and functional activities. Food Chem X 2022; 14:100322. [PMID: 35571331 PMCID: PMC9092490 DOI: 10.1016/j.fochx.2022.100322] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2022] [Revised: 03/28/2022] [Accepted: 04/27/2022] [Indexed: 02/07/2023] Open
Abstract
Moringa oleifera Lam. (M. oleifera Lam) is a perennial tropical deciduous tree that belongs to the Moringaceae family. Polysaccharides are one of the major bioactive compounds in M. oleifera Lam and show immunomodulatory, anticancer, antioxidant, intestinal health protection and antidiabetic activities. At present, the structure and functional activities of M. oleifera Lam polysaccharides (MOPs) have been widespread, but the research data are relatively scattered. Moreover, the relationship between the structure and biological activities of MOPs has not been summarized. In this review, the current research on the extraction, purification, structural characteristics and biological activities of polysaccharides from different sources of M. oleifera Lam were summarized, and the structural characteristics of purified polysaccharides were focused on this review. Meanwhile, the biological activities of MOPs were introduced, and some molecular mechanisms were listed. In addition, the relationship between the structure and biological activities of MOPs was discussed. Furthermore, new perspectives and some future research of M. oleifera Lam polysaccharides were proposed in this review.
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Key Words
- ABTS, 2,2′-Azino-bis (3-ethylbenzothiazoline-6-sulfonic acid)
- AKP, Alkaline phosphatase
- ALT, Alanine aminotransferase
- AST, Asparate aminotransferase
- Ara, Arabinose
- BUN, Blood urea nitrogen
- Bax, Bcl2-associated X protein
- Bcl-2, B-cell lymphoma
- Biological activities
- CCl4, Carbon tetrachloride
- COX-2, Cyclooxygenase-2
- Caspase-3, Cysteinyl aspartate specific proteinase 3
- Caspase-9, Cysteinyl aspartate specific proteinase 9
- DPPH, 2.2-diphenyl-picryl-hydrazyl radical
- EAE, Enzyme-assisted extraction
- FRAP, Ferric ion reducing antioxidant power
- FTIR, Fourier transform infrared spectroscopy
- Future trends
- GC, Gas chromatography
- GC–MS, Gas chromatography-mass spectrometry
- GSH-Px, Glutathione peroxidase
- Gal, Galactose
- Glc, Glucose
- HDL, High-density Lipoprotein
- HPGPC, High-performance gel permeation chromatography
- HPLC, High performance liquid chromatography
- HepG2, Human hepatocellular carcinoma cell line
- IL-10, Interleukin-10
- IL-1β, Interleukin 1β
- IL-2, Interleukin-2
- IL-6, Interleukin-6
- LDL, Low-density Lipoprotein
- LPS, Lipopolysaccharide
- M. oleifera Lam, Moringa oleifera Lam.
- MAE, Microwave-assisted extraction
- MDA, Malondialdehyde
- MOPs, Moringa oleifera Lam polysaccharides
- MS, Mass spectrometry
- MTT, 3‐(4,5‐dimethylthiazol‐2‐yl)‐2,5‐diphenyl tetrazolium bromide
- MW, Molecular weight
- Man, Mannose
- Moringa oleifera Lam
- NF-κB, Nuclear factor kappa-B
- NK, Natural killer cell
- NMR, Nuclear magnetic resonance
- NO, Nitric oxide
- PLE, Pressurized liquid extraction
- Polysaccharides
- ROS, Reactive oxygen species
- Rha, Rhamnose
- SCFAs, Short-chain fatty acids
- SOD, Superoxide dismutase
- Structure characteristics
- Structure-biological relationship
- TC, Total Cholesterol
- TG, Triglycerides
- TNF-α, Tumour necrosis factor-α
- TOF, Time of flight
- UAE, Ultrasound-assisted extraction
- V/C, Ileum crypt and villus length
- WAE, Water-assisted extraction
- Xyl, Xylose
- iNOS, Inducible nitric oxide synthase
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Affiliation(s)
- Min Yang
- College of Food Science and Technology, Yunnan Agricultural University, Kunming, China.,National Research and Development Professional Center for Moringa Processing Technology, Yunnan Agricultural University, Kunming, China.,Engineering Research Center of Development and Utilization of Food and Drug Homologous Resources, Ministry of Education, Yunnan Agricultural University, Kunming, China
| | - Liang Tao
- College of Food Science and Technology, Yunnan Agricultural University, Kunming, China.,National Research and Development Professional Center for Moringa Processing Technology, Yunnan Agricultural University, Kunming, China.,Engineering Research Center of Development and Utilization of Food and Drug Homologous Resources, Ministry of Education, Yunnan Agricultural University, Kunming, China
| | - Xin-Rui Kang
- College of Food Science and Technology, Yunnan Agricultural University, Kunming, China.,Yunnan Provincial Engineering Research Center for Edible and Medicinal Homologous Functional Food, Yunnan Agricultural University, Kunming, China
| | - Ling-Fei Li
- College of Food Science and Technology, Yunnan Agricultural University, Kunming, China.,Yunnan Provincial Engineering Research Center for Edible and Medicinal Homologous Functional Food, Yunnan Agricultural University, Kunming, China
| | - Cun-Chao Zhao
- Engineering Research Center of Development and Utilization of Food and Drug Homologous Resources, Ministry of Education, Yunnan Agricultural University, Kunming, China.,Yunnan Provincial Engineering Research Center for Edible and Medicinal Homologous Functional Food, Yunnan Agricultural University, Kunming, China
| | - Zi-Lin Wang
- College of Food Science and Technology, Yunnan Agricultural University, Kunming, China.,National Research and Development Professional Center for Moringa Processing Technology, Yunnan Agricultural University, Kunming, China
| | - Jun Sheng
- National Research and Development Professional Center for Moringa Processing Technology, Yunnan Agricultural University, Kunming, China.,Key Laboratory of Pu-er Tea Science, Ministry of Education, Yunnan Agricultural University, Kunming, China
| | - Yang Tian
- College of Food Science and Technology, Yunnan Agricultural University, Kunming, China.,National Research and Development Professional Center for Moringa Processing Technology, Yunnan Agricultural University, Kunming, China.,Engineering Research Center of Development and Utilization of Food and Drug Homologous Resources, Ministry of Education, Yunnan Agricultural University, Kunming, China.,Yunnan Provincial Engineering Research Center for Edible and Medicinal Homologous Functional Food, Yunnan Agricultural University, Kunming, China
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Calcium peroxide aids tyramine-alginate gel to crosslink with tyrosinase for efficient cartilage repair. Int J Biol Macromol 2022; 208:299-313. [PMID: 35288166 DOI: 10.1016/j.ijbiomac.2022.03.044] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Revised: 03/02/2022] [Accepted: 03/09/2022] [Indexed: 12/14/2022]
Abstract
The innate cartilage extracellular matrix is avascular and plays a vital role in innate chondrocytes. Recapping the crucial components of the extracellular matrix in engineered organs via polymeric gels and bioinspired approaches is promising for improving the regenerative aptitude of encapsulated cartilage/chondrocytes. Conventional gel formation techniques for polymeric materials rely on employing oxidative crosslinking, which is constrained in this avascular environment. Further, poor mechanical properties limit the practical applications of polymeric gels and reduce their therapeutic efficacy. Herein, the purpose of this study was to develop a bioadhesive gel possessing dual crosslinking for engineering cartilage. Tyramine (TYR) was first chemically conjugated to the alginate (ALG) backbone to form an ALG-TYR precursor, followed by the addition of calcium peroxide (CaO2); calcium ions of CaO2 physically crosslink with ALG, and oxygen atoms of CaO2 chemically crosslink TYR with tyrosinase, thus enabling dual/enhanced crosslinking and possessing injectability. The ALG-TYR/tyrosinase/CaO2 gel system was chemically, mechanically, cellularly, and microscopically characterized. The gel system developed herein was biocompatible and showed augmented mechanical strength. The results showed, for the first time, that CaO2 supplementation preserved cell viability and enhanced the crosslinking ability, bioadhesion, mechanical strength, chondrogenesis, and stability for cartilage regeneration.
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Characterization of hydrophobic interaction of galactomannan in aqueous solutions using fluorescence-based technique. Carbohydr Polym 2021; 267:118183. [PMID: 34119151 DOI: 10.1016/j.carbpol.2021.118183] [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: 11/15/2020] [Revised: 05/04/2021] [Accepted: 05/05/2021] [Indexed: 12/17/2022]
Abstract
Fluorescence probing was used to study hydrophobic interactions of galactomannan (GM) obtained from fenugreek gum (FG), guar gum (GG), and locust bean gum (LBG) at different M/G ratios. The I1/I3 ratio of pyrene changed from 1.73 to 1.29, 1.22, and 1.29 for FG, GG and LBG, respectively, as the concentration of GM increased from 0.01 to 8.0 g/L at 30 °C. The critical aggregation concentration of FG, GG, and LBG increased from 1.04 to 3.84 g/L, 1.15 to 3.73 g/L, and 0.94 to 3.63 g/L, respectively, as temperature increased from 10 to 70 °C. Addition of Na2SO4 and NaSCN increased the I1/I3 ratio in dilute solution, but reduced it in semi-dilute solution, whereas adding urea reduced I1/I3 in dilute solution but increased it in semi-dilute solution. These results indicated that the CAC of GM, polarity and number of hydrophobic microdomains were highly dependent on the M/G ratio and galactose distribution.
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11
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Carboxylic acid-catalysed hydrolysis of polygalacturonic acid in subcritical water media. J Supercrit Fluids 2021. [DOI: 10.1016/j.supflu.2020.105103] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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12
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Liu J, Bi J, McClements DJ, Liu X, Yi J, Lyu J, Zhou M, Verkerk R, Dekker M, Wu X, Liu D. Impacts of thermal and non-thermal processing on structure and functionality of pectin in fruit- and vegetable- based products: A review. Carbohydr Polym 2020; 250:116890. [PMID: 33049879 DOI: 10.1016/j.carbpol.2020.116890] [Citation(s) in RCA: 52] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2020] [Revised: 07/31/2020] [Accepted: 08/01/2020] [Indexed: 11/19/2022]
Abstract
Pectin, a major polysaccharide found in the cell walls of higher plants, plays major roles in determining the physical and nutritional properties of fruit- and vegetable-based products. An in-depth understanding of the effects of processing operations on pectin structure and functionality is critical for designing better products. This review, therefore, focuses on the progress made in understanding the effects of processing on pectin structure, further on pectin functionality, consequently on product properties. The effects of processing on pectin structure are highly dependent on the processing conditions. Targeted control of pectin structure by applying various processing operations could enhance textural, rheological, nutritional properties and cloud stability of products. While it seems that optimizing product quality in terms of physical properties is counteracted by optimizing the nutritional properties. Therefore, understanding plant component biosynthesis mechanisms and processing mechanisms could be a major challenge to balance among the quality indicators of processed products.
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Affiliation(s)
- Jianing Liu
- Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences (CAAS), Key Laboratory of Agro-Products Processing, Ministry of Agriculture and Rural Affairs, Beijing 100193, China; Food Quality and Design Group, Wageningen University & Research, Wageningen, PO Box 17, 6700 AA, the Netherlands
| | - Jinfeng Bi
- Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences (CAAS), Key Laboratory of Agro-Products Processing, Ministry of Agriculture and Rural Affairs, Beijing 100193, China.
| | - David Julian McClements
- Biopolymers and Colloids Laboratory, Department of Food Science, University of Massachusetts, Amherst, MA, 01003, USA
| | - Xuan Liu
- Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences (CAAS), Key Laboratory of Agro-Products Processing, Ministry of Agriculture and Rural Affairs, Beijing 100193, China.
| | - Jianyong Yi
- Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences (CAAS), Key Laboratory of Agro-Products Processing, Ministry of Agriculture and Rural Affairs, Beijing 100193, China
| | - Jian Lyu
- Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences (CAAS), Key Laboratory of Agro-Products Processing, Ministry of Agriculture and Rural Affairs, Beijing 100193, China
| | - Mo Zhou
- Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences (CAAS), Key Laboratory of Agro-Products Processing, Ministry of Agriculture and Rural Affairs, Beijing 100193, China
| | - Ruud Verkerk
- Food Quality and Design Group, Wageningen University & Research, Wageningen, PO Box 17, 6700 AA, the Netherlands
| | - Matthijs Dekker
- Food Quality and Design Group, Wageningen University & Research, Wageningen, PO Box 17, 6700 AA, the Netherlands
| | - Xinye Wu
- Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences (CAAS), Key Laboratory of Agro-Products Processing, Ministry of Agriculture and Rural Affairs, Beijing 100193, China
| | - Dazhi Liu
- Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences (CAAS), Key Laboratory of Agro-Products Processing, Ministry of Agriculture and Rural Affairs, Beijing 100193, China
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