1
|
Fan H, Li R, Zhang Y, Xu X, Pan S, Liu F. Effect of H 2O 2/ascorbic acid degradation and gradient ethanol precipitation on the physicochemical properties and biological activities of pectin polysaccharides from Satsuma Mandarin. Int J Biol Macromol 2024; 280:135843. [PMID: 39306161 DOI: 10.1016/j.ijbiomac.2024.135843] [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: 06/09/2024] [Revised: 09/13/2024] [Accepted: 09/18/2024] [Indexed: 10/01/2024]
Abstract
In this work, three degraded polysaccharides (DMPP-40, DMPP-60, DMPP-80) were successfully obtained by H2O2/ascorbic acid degradation and gradient ethanol precipitation from Satsuma mandarin peel pectin (MPP), and their physicochemical properties, antioxidant and prebiotic activities were investigated. The molecular weight of MPP, DMPP-40, DMPP-60, DMPP-80 were determined to be 336.83 ± 10.57, 18.93 ± 0.54, 26.07 ± 0.83 and 8.71 ± 0.27 kDa, respectively. The ethanol concentration significantly affected the physicochemical properties of DMPPs. DMPP-60 showed the highest yield (69.07 %) and uronic acid content (64.85 %), DMPP-80 showed the lowest molecular weight (8.71 kDa), and the composition and proportion of monosaccharides of DMPPs were significantly different. Fourier transform infrared spectroscopy (FT-IR) and nuclear magnetic resonance spectroscopy (1H NMR) confirmed that DMPPs exhibited similar functional groups, while X-ray diffraction (XRD) indicated that DMPP-40 possessed some crystallographic sequences. Scanning electron microscopy (SEM) images directly verified the fragmented structure and reduced surface area of DMPPs. Besides, the H2O2/ascorbic acid treatment could obviously reduce the apparent viscosity and thermal stability of MPP. Meanwhile, the results of bioactivity assay showed that DMPPs possessed better antioxidant activity and probiotics pro-proliferative effects compared with MPP. DMPP-80 could significantly inhibit lipopolysaccharides (LPS)-stimulated production of inflammatory factors (including nitric oxide (NO), interleukin (IL)-6, tumor necrosis factor (TNF)-α and interleukin (IL)-1β) in RAW264.7 cells. Results suggest that the H2O2/ascorbic acid combined with gradient ethanol precipitation has potential applications in degradation and separation of MPP to improve its biological activities.
Collapse
Affiliation(s)
- Hekai Fan
- College of Food Science and Technology, Huazhong agricultural university, Wuhan, Hubei, PR China; Hubei Key Laboratory of Fruit & Vegetable Processing & Quality Control, Huazhong Agricultural University, Wuhan, Hubei, PR China
| | - Ruoxuan Li
- College of Food Science and Technology, Huazhong agricultural university, Wuhan, Hubei, PR China; Hubei Key Laboratory of Fruit & Vegetable Processing & Quality Control, Huazhong Agricultural University, Wuhan, Hubei, PR China
| | - Yanbing Zhang
- College of Food Science and Technology, Huazhong agricultural university, Wuhan, Hubei, PR China; Hubei Key Laboratory of Fruit & Vegetable Processing & Quality Control, Huazhong Agricultural University, Wuhan, Hubei, PR China
| | - Xiaoyun Xu
- College of Food Science and Technology, Huazhong agricultural university, Wuhan, Hubei, PR China; Hubei Key Laboratory of Fruit & Vegetable Processing & Quality Control, Huazhong Agricultural University, Wuhan, Hubei, PR China
| | - Siyi Pan
- College of Food Science and Technology, Huazhong agricultural university, Wuhan, Hubei, PR China; Hubei Key Laboratory of Fruit & Vegetable Processing & Quality Control, Huazhong Agricultural University, Wuhan, Hubei, PR China
| | - Fengxia Liu
- College of Food Science and Technology, Huazhong agricultural university, Wuhan, Hubei, PR China; Hubei Key Laboratory of Fruit & Vegetable Processing & Quality Control, Huazhong Agricultural University, Wuhan, Hubei, PR China.
| |
Collapse
|
2
|
Nishinari K, Fang Y. Molar mass effect in food and health. Food Hydrocoll 2021; 112:106110. [PMID: 32895590 PMCID: PMC7467918 DOI: 10.1016/j.foodhyd.2020.106110] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2019] [Revised: 06/12/2020] [Accepted: 06/15/2020] [Indexed: 12/26/2022]
Abstract
It is demanded to supply foods with good quality for all the humans. With the advent of aging society, palatable and healthy foods are required to improve the quality of life and reduce the burden of finance for medical expenditure. Food hydrocolloids can contribute to this demand by versatile functions such as thickening, gelling, stabilising, and emulsifying, controlling texture and flavour release in food processing. Molar mass effects on viscosity and diffusion in liquid foods, and on mechanical and other physical properties of solid and semi-solid foods and films are overviewed. In these functions, the molar mass is one of the key factors, and therefore, the effects of molar mass on various health problems related to noncommunicable diseases or symptoms such as cancer, hyperlipidemia, hyperglycemia, constipation, high blood pressure, knee pain, osteoporosis, cystic fibrosis and dysphagia are described. Understanding these problems only from the viewpoint of molar mass is limited since other structural characteristics, conformation, branching, blockiness in copolymers such as pectin and alginate, degree of substitution as well as the position of the substituents are sometimes the determining factor rather than the molar mass. Nevertheless, comparison of different behaviours and functions in different polymers from the viewpoint of molar mass is expected to be useful to find a common characteristics, which may be helpful to understand the mechanism in other problems.
Collapse
Affiliation(s)
- Katsuyoshi Nishinari
- Glyn O. Phillips Hydrocolloids Research Centre, School of Food and Biological Engineering, Hubei University of Technology, Wuhan, 430068, PR China
- Department of Food and Nutrition, Graduate School of Human Life Science, Osaka City University, Osaka, 558-6565, Japan
| | - Yapeng Fang
- Department of Food Science and Technology, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, 200240, PR China
| |
Collapse
|
3
|
Ovalle R, Chen L, Soll CE, Moore CW, Lipke PN. Regioselective degradation of [beta] 1,3 glucan by ferrous ion and hydrogen peroxide (Fenton oxidation). Carbohydr Res 2020; 497:108124. [PMID: 32977214 DOI: 10.1016/j.carres.2020.108124] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2019] [Revised: 07/22/2020] [Accepted: 08/04/2020] [Indexed: 10/23/2022]
Abstract
Many species use Fe+2 and H2O2 to oxidize a wide variety of compounds to simpler molecules. Both pathogen killing by leukocytes (neutrophils and lymphocytes) and degradation of cellulose by brown rot fungi rely on excretion of Fe+2 ions and H2O2, the Fenton reagent. To elucidate the mechanism of Fenton oxidation of carbohydrates, β1,3 glucan (laminaran), a major fungal wall polysaccharide, was oxidized using a molar ratio of monomer/Fe+2/H2O2 of 10:1:1 (primarily). We labeled the reaction products and profiled them as fluorescent-labeled molecules in polyacrylamide gels and as hydrophobic-tagged molecules using reverse phase liquid chromatography/mass spectrometry (HPLC/MS). Sub-stoichiometric concentrations of Fe+2 and H2O2 fragmented laminaran into smaller molecules containing carbonyl and carboxylic acid groups visible on fluorescent-labeled carbohydrate polyacrylamide gel electrophoresis. HPLC/MS analysis of glucan fragments showed masses consistent with six classes of molecules: aldoses, dialdoses, uronic acids, hexosuloses, aldonic acids, and hexulosonic acids. The results were consistent with published mechanisms where hydrogen radical (H•) abstraction from a C-H or O-H bond begins a cascade of reactions leading to 1) C-C bond cleavage to produce aldose/dialdose pairs; 2) oxo-group (O = ) addition to produce uronic and aldonic acids; 3) hydroxyl group (HO-) addition to produce gluconolactone and hexosuloses; and 4) hexulosonic acids. Most products resulted from regioselective H• abstractions characteristic of oxidations by ferryl-oxo ion [(FeO)+2] or perferryl-oxo ion [(FeO)+3] in close contact with specific positions in the glycan. Therefore, oxidations initiated by regioselectively-bound Fe ions were the predominant initiators of polysaccharide degradations.
Collapse
Affiliation(s)
- Rafael Ovalle
- Biology Department, Brooklyn College of the City University of New York (CUNY), Brooklyn, NY, 11210, USA; Biology PhD Program, Graduate Center of the CUNY, New York, NY, 10016, USA.
| | - Lijie Chen
- Biology Department, Brooklyn College of the City University of New York (CUNY), Brooklyn, NY, 11210, USA; Department of Biology, City College of New York of the CUNY, New York, NY, 10031, USA
| | - Clifford E Soll
- Department of Chemistry, Hunter College of the CUNY, New York, NY, 10065, USA
| | - Carol Wood Moore
- Biology PhD Program, Graduate Center of the CUNY, New York, NY, 10016, USA; CUNY School of Medicine, New York, NY, 10031, USA
| | - Peter N Lipke
- Biology Department, Brooklyn College of the City University of New York (CUNY), Brooklyn, NY, 11210, USA; Biology PhD Program, Graduate Center of the CUNY, New York, NY, 10016, USA.
| |
Collapse
|
4
|
San PT, Khanh CM, Khanh HHN, Khoa TA, Hoang N, Nhung LT, Trinh NTK, Nguyen TD. k-Oligocarrageenan Promoting Growth of Hybrid Maize: Influence of Molecular Weight. Molecules 2020; 25:molecules25173825. [PMID: 32842659 PMCID: PMC7503339 DOI: 10.3390/molecules25173825] [Citation(s) in RCA: 4] [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: 07/21/2020] [Revised: 08/10/2020] [Accepted: 08/20/2020] [Indexed: 01/08/2023] Open
Abstract
k-Oligocarrageenan (OC) is an effective biostimulator and a protector against disease infections for plants. However, the effect of OC molecular weight (MW) on plant growth is not fully understood. In this work, OCs with three different MWs (42, 17 and 4 kDa) was prepared by varying the degradation reaction time using ascorbic acid as a reagent. The product structure was confirmed by Fourier-transform infrared spectroscopy (FTIR) data. The growth promotion for maize (Zea mays L.) plants was investigated by foliar spray application of the prepared OCs. Field trials were carried out in two years, 2018 and 2019. The results showed that among treatments, OC with 4 kDa exhibited the best performance in both crop growth and grain yield parameters which indicated increases compared to the control in plant height (6.9–19.9%), length of ears (12.2%), diameter of ears (9.1%), fresh grain weight (17.8%), dry grain weight (20.0%) and grain yield (21.3%). Moreover, low MW OC augmented NP uptake in the plant growth while no effect on K uptake was observed. Therefore, OC with low MWs is potentially promising to apply as a promoter to enhance yield of crops.
Collapse
Affiliation(s)
- Pham Trung San
- NhaTrang Institute of Technology Research and Application, Vietnam Academy of Science and Technology, NhaTrang City 57000, Vietnam; (C.M.K.); (H.H.N.K.); (T.A.K.); (N.H.); (L.T.N.); (N.T.K.T.)
- Correspondence:
| | - Chau Minh Khanh
- NhaTrang Institute of Technology Research and Application, Vietnam Academy of Science and Technology, NhaTrang City 57000, Vietnam; (C.M.K.); (H.H.N.K.); (T.A.K.); (N.H.); (L.T.N.); (N.T.K.T.)
| | - Huynh Hoang Nhu Khanh
- NhaTrang Institute of Technology Research and Application, Vietnam Academy of Science and Technology, NhaTrang City 57000, Vietnam; (C.M.K.); (H.H.N.K.); (T.A.K.); (N.H.); (L.T.N.); (N.T.K.T.)
| | - Truong Anh Khoa
- NhaTrang Institute of Technology Research and Application, Vietnam Academy of Science and Technology, NhaTrang City 57000, Vietnam; (C.M.K.); (H.H.N.K.); (T.A.K.); (N.H.); (L.T.N.); (N.T.K.T.)
| | - Nguyen Hoang
- NhaTrang Institute of Technology Research and Application, Vietnam Academy of Science and Technology, NhaTrang City 57000, Vietnam; (C.M.K.); (H.H.N.K.); (T.A.K.); (N.H.); (L.T.N.); (N.T.K.T.)
| | - Le Thi Nhung
- NhaTrang Institute of Technology Research and Application, Vietnam Academy of Science and Technology, NhaTrang City 57000, Vietnam; (C.M.K.); (H.H.N.K.); (T.A.K.); (N.H.); (L.T.N.); (N.T.K.T.)
| | - Nguyen Thi Kieu Trinh
- NhaTrang Institute of Technology Research and Application, Vietnam Academy of Science and Technology, NhaTrang City 57000, Vietnam; (C.M.K.); (H.H.N.K.); (T.A.K.); (N.H.); (L.T.N.); (N.T.K.T.)
| | - Thanh-Danh Nguyen
- Institute of Chemical Technology, Vietnam Academy of Science and Technology, HoChiMinh City 70000, Vietnam;
| |
Collapse
|
5
|
Zeng A, Yang R, Yu S, Zhao W. A novel hypoglycemic agent: polysaccharides from laver (Porphyra spp.). Food Funct 2020; 11:9048-9056. [DOI: 10.1039/d0fo01195a] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The laver crude polysaccharides were extracted, purified, and subsequently degraded using H2O2. One low-molecular-weight polysaccharide PD-1 showing the highest inhibition activity against α-amylase might be used as a novel agent for T2DM management.
Collapse
Affiliation(s)
- Aoqiong Zeng
- State Key Laboratory of Food Science and Technology
- School of Food Science and Technology
- Jiangnan University
- Wuxi
- P.R. China
| | - Ruijin Yang
- State Key Laboratory of Food Science and Technology
- School of Food Science and Technology
- Jiangnan University
- Wuxi
- P.R. China
| | - Shuhuai Yu
- State Key Laboratory of Food Science and Technology
- School of Food Science and Technology
- Jiangnan University
- Wuxi
- P.R. China
| | - Wei Zhao
- State Key Laboratory of Food Science and Technology
- School of Food Science and Technology
- Jiangnan University
- Wuxi
- P.R. China
| |
Collapse
|
6
|
Xu Y, Liu N, Fu X, Wang L, Yang Y, Ren Y, Liu J, Wang L. Structural characteristics, biological, rheological and thermal properties of the polysaccharide and the degraded polysaccharide from raspberry fruits. Int J Biol Macromol 2019; 132:109-118. [DOI: 10.1016/j.ijbiomac.2019.03.180] [Citation(s) in RCA: 50] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2018] [Revised: 02/27/2019] [Accepted: 03/25/2019] [Indexed: 12/16/2022]
|
7
|
Čížová A, Csomorová K, Rychlý J, Bystrický S. Stability of cationic and amphoteric derivatives of mannan from the yeast Candida albicans. Carbohydr Polym 2019; 207:440-446. [PMID: 30600027 DOI: 10.1016/j.carbpol.2018.11.101] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2018] [Revised: 11/30/2018] [Accepted: 11/30/2018] [Indexed: 11/27/2022]
Abstract
Infection with Candida albicans can prove lethal in immuno-compromised patients. It is imperative to develop a vaccine against this common organism. The amphoteric derivatives of the mannan component of the Candida cell wall may present a prospective target for the development of such a vaccine; however, the radical processing by antigen-presenting cells of the immune system is not fully understood. In this work a set of tailor-made cationic and amphoteric derivatives of three different degrees of quaternization (DSQ 0.14-0.38) has been prepared by chemical modification of ultrasonically-treated mannan and three carboxymethylated mannan derivatives (DSCM 0.13-0.32). These were exposed to free-radical attack by OH, generated in situ by the Fenton reaction. Potential changes in composition, DSQ, and molar mass distribution due to free-radical degradation were monitored by elemental analysis, NMR and FTIR spectroscopies, and size exclusion chromatography. A protective effect of quaternization against OH degradation was found. Non-isothermal thermogravimetric analysis found that the thermal stability of this mannan was also improved by chemical modification.
Collapse
Affiliation(s)
- Alžbeta Čížová
- Institute of Chemistry, Slovak Academy of Sciences, Dúbravská cesta 9, 845 38, Bratislava, Slovakia.
| | - Katarína Csomorová
- Polymer Institute of the Slovak Academy of Sciences, Dúbravská cesta 9, 845 41, Bratislava, Slovakia.
| | - Jozef Rychlý
- Polymer Institute of the Slovak Academy of Sciences, Dúbravská cesta 9, 845 41, Bratislava, Slovakia.
| | - Slavomír Bystrický
- Institute of Chemistry, Slovak Academy of Sciences, Dúbravská cesta 9, 845 38, Bratislava, Slovakia.
| |
Collapse
|
8
|
Mou J, Wang C, Li Q, Qi X, Yang J. Preparation and antioxidant properties of low molecular holothurian glycosaminoglycans by H2O2/ascorbic acid degradation. Int J Biol Macromol 2018; 107:1339-1347. [DOI: 10.1016/j.ijbiomac.2017.10.161] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2017] [Revised: 10/16/2017] [Accepted: 10/25/2017] [Indexed: 11/25/2022]
|
9
|
Li J, Li S, Yan L, Ding T, Linhardt RJ, Yu Y, Liu X, Liu D, Ye X, Chen S. Fucosylated chondroitin sulfate oligosaccharides exert anticoagulant activity by targeting at intrinsic tenase complex with low FXII activation: Importance of sulfation pattern and molecular size. Eur J Med Chem 2017; 139:191-200. [PMID: 28800457 DOI: 10.1016/j.ejmech.2017.07.065] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2017] [Revised: 07/25/2017] [Accepted: 07/27/2017] [Indexed: 01/22/2023]
Abstract
Fucosylated chondroitin sulfates (fCSs) are structurally unusual glycosaminoglycans isolated from sea cucumbers that exhibit potent anticoagulant activity. These fCSs were isolated from sea cucumber, Isostichopus badionotus and Pearsonothuria graeffei. Fenton reaction followed by gel filtration chromatography afforded fCS oligosaccharides, with different sulfation patterns identified by mass and NMR spectroscopy, and these were used to clarify the relationship between the structures and the anticoagulant activities of fCSs. In vitro activities were measured by activated partial thromboplastin time (APTT), thrombin time (TT), thrombin and factor Xa inhibition, and activation of FXII. The results showed that free radicals preferentially acted on GlcA residues affording oligosaccharides that were purified from both fCSs. The inhibition of thrombin and factor X activities, mediated through antithrombin III and heparin cofactor II of fCSs oligosaccharides were affected by their molecular weight and fucose branches. Oligosaccharides with different sulfation patterns of the fucose branching had a similar ability to inhibit the FXa by the intrinsic factor Xase (factor IXa-VIIIa complex). Oligosaccharides with 2,4-O-sulfo fucose branches from fCS-Ib showed higher activities than ones with 3,4-O-disulfo branches obtained from fCS-Pg. Furthermore, a heptasaccharide is the minimum size oligosaccharide required for anticoagulation and FXII activation. This activity was absent for fCS oligosaccharides smaller than nonasaccharides. Molecular size and fucose branch sulfation are important for anticoagulant activity and reduction of size can reverse the activation of FXII caused by native fCSs.
Collapse
Affiliation(s)
- Junhui Li
- Zhejiang Key Laboratory for Agro-Food Processing, Department of Food Science and Nutrition, Fuli Institute of Food Science, Zhejiang University, Hangzhou, 310058, China.
| | - Shan Li
- Zhejiang Key Laboratory for Agro-Food Processing, Department of Food Science and Nutrition, Fuli Institute of Food Science, Zhejiang University, Hangzhou, 310058, China.
| | - Lufeng Yan
- Zhejiang Key Laboratory for Agro-Food Processing, Department of Food Science and Nutrition, Fuli Institute of Food Science, Zhejiang University, Hangzhou, 310058, China.
| | - Tian Ding
- Zhejiang Key Laboratory for Agro-Food Processing, Department of Food Science and Nutrition, Fuli Institute of Food Science, Zhejiang University, Hangzhou, 310058, China.
| | - Robert J Linhardt
- Center for Biotechnology & Interdisciplinary Studies, Department of Chemistry & Chemical Biology, Rensselaer Polytechnic Institute, Biotechnology Center 4005, Troy, NY 12180, USA.
| | - Yanlei Yu
- Center for Biotechnology & Interdisciplinary Studies, Department of Chemistry & Chemical Biology, Rensselaer Polytechnic Institute, Biotechnology Center 4005, Troy, NY 12180, USA.
| | - Xinyue Liu
- Center for Biotechnology & Interdisciplinary Studies, Department of Chemistry & Chemical Biology, Rensselaer Polytechnic Institute, Biotechnology Center 4005, Troy, NY 12180, USA.
| | - Donghong Liu
- Zhejiang Key Laboratory for Agro-Food Processing, Department of Food Science and Nutrition, Fuli Institute of Food Science, Zhejiang University, Hangzhou, 310058, China.
| | - Xingqian Ye
- Zhejiang Key Laboratory for Agro-Food Processing, Department of Food Science and Nutrition, Fuli Institute of Food Science, Zhejiang University, Hangzhou, 310058, China.
| | - Shiguo Chen
- Zhejiang Key Laboratory for Agro-Food Processing, Department of Food Science and Nutrition, Fuli Institute of Food Science, Zhejiang University, Hangzhou, 310058, China.
| |
Collapse
|
10
|
Zhang Z, Wang X, Liu C, Li J. The degradation, antioxidant and antimutagenic activity of the mucilage polysaccharide from Dioscorea opposita. Carbohydr Polym 2016; 150:227-31. [DOI: 10.1016/j.carbpol.2016.05.034] [Citation(s) in RCA: 62] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2016] [Revised: 04/26/2016] [Accepted: 05/11/2016] [Indexed: 10/21/2022]
|
11
|
Wu T, Wu C, Xiang Y, Huang J, Luan L, Chen S, Hu Y. Kinetics and mechanism of degradation of chitosan by combining sonolysis with H2O2/ascorbic acid. RSC Adv 2016. [DOI: 10.1039/c6ra11197a] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
This study demonstrated the combined use of sonolysis with the H2O2/ascorbic acid (Vc) redox reaction to degrade chitosan (CS).
Collapse
Affiliation(s)
- Tiantian Wu
- College of Biosystems Engineering and Food Science
- Fuli Institute of Food Science
- Zhejiang Key Laboratory for Agro-Food Processing
- Zhejiang R & D Center for Food Technology and Equipment
- Zhejiang University
| | - Chunhua Wu
- College of Biosystems Engineering and Food Science
- Fuli Institute of Food Science
- Zhejiang Key Laboratory for Agro-Food Processing
- Zhejiang R & D Center for Food Technology and Equipment
- Zhejiang University
| | - Yingchun Xiang
- College of Biosystems Engineering and Food Science
- Fuli Institute of Food Science
- Zhejiang Key Laboratory for Agro-Food Processing
- Zhejiang R & D Center for Food Technology and Equipment
- Zhejiang University
| | - Jiaqi Huang
- College of Biosystems Engineering and Food Science
- Fuli Institute of Food Science
- Zhejiang Key Laboratory for Agro-Food Processing
- Zhejiang R & D Center for Food Technology and Equipment
- Zhejiang University
| | - Lanlan Luan
- College of Biosystems Engineering and Food Science
- Fuli Institute of Food Science
- Zhejiang Key Laboratory for Agro-Food Processing
- Zhejiang R & D Center for Food Technology and Equipment
- Zhejiang University
| | - Shiguo Chen
- College of Biosystems Engineering and Food Science
- Fuli Institute of Food Science
- Zhejiang Key Laboratory for Agro-Food Processing
- Zhejiang R & D Center for Food Technology and Equipment
- Zhejiang University
| | - Yaqin Hu
- College of Biosystems Engineering and Food Science
- Fuli Institute of Food Science
- Zhejiang Key Laboratory for Agro-Food Processing
- Zhejiang R & D Center for Food Technology and Equipment
- Zhejiang University
| |
Collapse
|
12
|
Čížová A, Bystrický P, Bystrický S. Ultrasonic and free-radical degradation of mannan from Candida albicans. Int J Biol Macromol 2015; 75:32-6. [DOI: 10.1016/j.ijbiomac.2014.12.046] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2014] [Revised: 12/11/2014] [Accepted: 12/18/2014] [Indexed: 10/24/2022]
|
13
|
Free-radical degradation by Fe2+/Vc/H2O2 and antioxidant activity of polysaccharide from Tremella fuciformis. Carbohydr Polym 2014; 112:578-82. [DOI: 10.1016/j.carbpol.2014.06.030] [Citation(s) in RCA: 83] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2014] [Revised: 06/02/2014] [Accepted: 06/11/2014] [Indexed: 11/19/2022]
|
14
|
Zhang Z, Wang X, Mo X, Qi H. Degradation and the antioxidant activity of polysaccharide from Enteromorpha linza. Carbohydr Polym 2013; 92:2084-7. [DOI: 10.1016/j.carbpol.2012.11.096] [Citation(s) in RCA: 88] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2012] [Revised: 11/16/2012] [Accepted: 11/30/2012] [Indexed: 12/01/2022]
|
15
|
Wu N, Ye X, Guo X, Liao N, Yin X, Hu Y, Sun Y, Liu D, Chen S. Depolymerization of fucosylated chondroitin sulfate from sea cucumber, Pearsonothuria graeffei, via 60Co irradiation. Carbohydr Polym 2012; 93:604-14. [PMID: 23499102 DOI: 10.1016/j.carbpol.2012.12.044] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2012] [Revised: 11/02/2012] [Accepted: 12/12/2012] [Indexed: 11/15/2022]
Abstract
A method for depolymerization of a novel fucosylated chondroitin sulfate from Pearsonothuria graeffei (fCS-Pg) using (60)Co irradiation in water solution was developed in the current study. Fragments with varying molecular weights were obtained by (60)Co irradiation at different dosages and sample concentrations. The chemical compositions and structures of these fragments were further investigated using high-performance liquid chromatography (HPLC), infrared spectroscopy (IR) and nuclear magnetic resonance spectroscopy (NMR). Our results indicated that (60)Co irradiation induced depolymerization via selective breakage of glucuronic acid units in the fCS-Pg backbone, with no obvious influence on sulfated fucose branches under mild conditions. The recommended conditions for fCS-Pg degradation were 2-10% solution concentration and irradiation dosages of 10-50kGy. The anticoagulant activities of the low molecular weight fragments were additionally evaluated. Notably, anticoagulant activities were reduced with decreasing molecular weights. Compared to the native fCS-Pg, low molecular weight fragments displayed significantly decreased anticoagulant activities. Based on the collective findings, we propose that these fragments are potentially applicable as antithrombotic agents with reduced bleeding risk relative to native fCS-Pg.
Collapse
Affiliation(s)
- Nian Wu
- College of Biosystem Engineering and Food Science, Zhejiang University, Hangzhou 310029, China
| | | | | | | | | | | | | | | | | |
Collapse
|
16
|
Wu M, Xu S, Zhao J, Kang H, Ding H. Free-radical depolymerization of glycosaminoglycan from sea cucumber Thelenata ananas by hydrogen peroxide and copper ions. Carbohydr Polym 2010. [DOI: 10.1016/j.carbpol.2010.01.032] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
17
|
Preparation and characterization of molecular weight fractions of glycosaminoglycan from sea cucumber Thelenata ananas using free radical depolymerization. Carbohydr Res 2010; 345:649-55. [DOI: 10.1016/j.carres.2009.11.030] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2009] [Revised: 11/23/2009] [Accepted: 11/28/2009] [Indexed: 11/18/2022]
|
18
|
Marchetti F, Bergamin M, Bosi S, Khan R, Murano E, Norbedo S. Synthesis of 6-deoxy-6-chloro and 6-deoxy-6-bromo derivatives of scleroglucan as intermediates for conjugation with methotrexate and other carboxylate containing compounds. Carbohydr Polym 2009. [DOI: 10.1016/j.carbpol.2008.09.007] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
19
|
Aasprong E, Smidsrød O, Stokke BT. Swelling, mechanical properties and effect of annealing of scleroglucan gels. Carbohydr Polym 2005. [DOI: 10.1016/j.carbpol.2005.01.016] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
20
|
Sletmoen M, Christensen BE, Stokke BT. Probing macromolecular architectures of nanosized cyclic structures of (1→3)-β-d-glucans by AFM and SEC-MALLS. Carbohydr Res 2005; 340:971-9. [PMID: 15780261 DOI: 10.1016/j.carres.2005.01.026] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2004] [Accepted: 01/16/2005] [Indexed: 11/29/2022]
Abstract
Comb-like branched (1-->3)-beta-D-glucans dissolve in water as stiff triple-helical structures. Dissociation followed by re-association leads to the formation of a blend of various macromolecular topologies, where the cyclic species make up a significant fraction. In this study, the molecular properties of these nanosized cyclic structures of (1-->3)-beta-D-glucans were probed using a combination of AFM and SEC-MALLS. The cyclic structures were obtained by subjecting linear triple-helical molecules of (1-->3)-beta-D-glucans to a denaturation-renaturation cycle, and the fraction of cyclic structures in the renatured sample was determined by AFM. Samples containing different known fractions of linear and circular molecules were studied by SEC with online multi-angle laser-light scattering and viscometric detectors. The molecular weight and the radius of gyration of the molecules eluting from the SEC column, as well as the concentration and the intrinsic viscosity, were determined simultaneously. By extrapolating the results to a situation of only circular species, the results allowed to determine the linear mass per unit length (M(L)) of not only the linear but also the circular morphologies of the (1-->3)-beta-D-glucans. The values obtained were M(L)=2140+/-180 g mol(-1)nm(-1) for the circular species and 2045+/-80 g mol(-1)nm(-1) for the linear species. This is the first direct determination of the M(L) parameter of the circular topology, and the results indicate that the reassociation of the individual chains yield a triplex structure also for the circular morphology, similar to the initial triple helix.
Collapse
Affiliation(s)
- Marit Sletmoen
- Biophysics and Medical Technology, Department of Physics, The Norwegian University of Science and Technology, NTNU, NO-7491 Trondheim, Norway
| | | | | |
Collapse
|
21
|
|
22
|
Christensen B, Aasprong E, Stokke B. Gelation of periodate oxidised scleroglucan (scleraldehyde). Carbohydr Polym 2001. [DOI: 10.1016/s0144-8617(00)00327-1] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
23
|
Falch BH, Espevik T, Ryan L, Stokke BT. The cytokine stimulating activity of (1-->3)-beta-D-glucans is dependent on the triple helix conformation. Carbohydr Res 2000; 329:587-96. [PMID: 11128587 DOI: 10.1016/s0008-6215(00)00222-6] [Citation(s) in RCA: 174] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
The immunomodulating properties of comb-like branched (1-->3)-beta-D-glucans scleroglucan, schizophyllan and lentinan depend on branching pattern, molecular weight and higher-order structure. The effect of weight average molecular weight Mw and higher order structure of scleroglucan, on stimulation of human monocytes cultured in vitro to secrete tumor necrosis factor-alpha (TNF-alpha) was investigated. The higher order structures of the scleroglucan samples were determined by electron microscopy. The data showed that the samples with a linear wormlike, triple helical structure with Mw less than 50 x 10(4) g/mol or larger than 110 x 10(4) g/mol stimulated the monocytes more efficiently than samples with Mw in the range (67-110) x 10(4) g/mol. The denaturation of the linear triple helices by NaOH (> 0.25 M), followed by neutralization yielded blends of linear and macrocyclic topologies with concomitant irreversible reduction of the cytokine inducing activity compared with the untreated scleroglucans. The dose-dependent ability to activate monocytes to cytokine production was not restored following annealing of the denatured-renatured samples, despite the fact that electron micrographs revealed similar structures of these annealed samples to the starting material. Pre-incubation of monocytes with antibodies against cluster of differentiation antigens CD14 or CD11b reduced the scleroglucan potency to stimulate TNF-alpha secretion mainly for mAb against CD14 in the presence of serum.
Collapse
Affiliation(s)
- B H Falch
- Department of Physics, The Norwegian University of Science and Technology, Trondheim
| | | | | | | |
Collapse
|
24
|
Falch BH, Elgsaeter A, Stokke BT. Exploring the (1 --> 3)-beta-D-glucan conformational phase diagrams to optimize the linear to macrocycle conversion of the triple-helical polysaccharide scleroglucan. Biopolymers 1999; 50:496-512. [PMID: 10479733 DOI: 10.1002/(sici)1097-0282(19991015)50:5<496::aid-bip4>3.0.co;2-7] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
The immunologically important (1 --> 6) comb-like branched (1 --> 3)-beta-D-glucans scleroglucan, schizophyllan, lentinan, and others, exist mainly as linear triple-helical structures in aqueous solution. Partial interconversion from linear to circular topology has been reported to take place following conformational transition of the triple-helical structure and subsequent regeneration of the triplex conformation. We here report on experimental data indicating that complete strand separation of the triple-helical structure is required for this interconversion. NaOH or dimethylsulfoxide was used to induce dissociation of the triplex at combinations of concentrations and temperatures shown by calorimetry to yield a conformational transition of the triplex structures. For the alkaline treatment at 55 degrees C, it is found that up to about 30% of the material readily can be converted to the cyclic topology. This fraction increased to about 60% when the subsequent annealing of the scleroglucan in aqueous solution at pH 7 was carried out at 100 degrees C. Further increase of the annealing temperature yielded a smaller relative amount of cyclic species. The data indicate that the lower molecular weight fraction of the molecular weight distributions can be converted selectively to the macrocyclic topology by conditions that do not yield complete strand separation of the whole sample. These findings add to previous reports by providing more details about how the conditions required for the linear triplex to macrocycle interconversion relate to the conformational properties of the triple-helical structure. Copyright 1999 John Wiley & Sons, Inc.
Collapse
Affiliation(s)
- BH Falch
- The Norwegian Biopolymer Laboratory, Department of Physics, Sem Saelands vei 9, The Norwegian University of Science and Technology, NTNU, N-7491 Trondheim, Norway
| | | | | |
Collapse
|
25
|
Sigler K, Chaloupka J, Brozmanová J, Stadler N, Höfer M. Oxidative stress in microorganisms--I. Microbial vs. higher cells--damage and defenses in relation to cell aging and death. Folia Microbiol (Praha) 1999; 44:587-624. [PMID: 11097021 DOI: 10.1007/bf02825650] [Citation(s) in RCA: 114] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Oxidative stress in microbial cells shares many similarities with other cell types but it has its specific features which may differ in prokaryotic and eukaryotic cells. We survey here the properties and actions of primary sources of oxidative stress, the role of transition metals in oxidative stress and cell protective machinery of microbial cells, and compare them with analogous features of other cell types. Other features to be compared are the action of Reactive Oxygen Species (ROS) on cell constituents, secondary lipid- or protein-based radicals and other stress products. Repair of oxidative injury by microorganisms and proteolytic removal of irreparable cell constituents are briefly described. Oxidative damage of aerobically growing microbial cells by endogenously formed ROS mostly does not induce changes similar to the aging of multiplying mammalian cells. Rapid growth of bacteria and yeast prevents accumulation of impaired macromolecules which are repaired, diluted or eliminated. During growth some simple fungi, such as yeast or Podospora spp., exhibit aging whose primary cause seems to be fragmentation of the nucleolus or impairment of mitochondrial DNA integrity. Yeast cell aging seems to be accelerated by endogenous oxidative stress. Unlike most growing microbial cells, stationary-phase cells gradually lose their viability because of a continuous oxidative stress, in spite of an increased synthesis of antioxidant enzymes. Unlike in most microorganisms, in plant and animal cells a severe oxidative stress induces a specific programmed death pathway--apoptosis. The scant data on the microbial death mechanisms induced by oxidative stress indicate that in bacteria cell death can result from activation of autolytic enzymes (similarly to the programmed mother-cell death at the end of bacillary sporulation). Yeast and other simple eukaryotes contain components of a proapoptotic pathway which are silent under normal conditions but can be activated by oxidative stress or by manifestation of mammalian death genes, such as bak or bax. Other aspects, such as regulation of oxidative-stress response, role of defense enzymes and their control, acquisition of stress tolerance, stress signaling and its role in stress response, as well as cross-talk between different stress factors, will be the subject of a subsequent review.
Collapse
Affiliation(s)
- K Sigler
- Institute of Microbiology, Academy of Sciences of the Czech Republic, Prague
| | | | | | | | | |
Collapse
|