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Ma L, Chen T, Wu J, Li X, Wang J, Li W. The structure and in vitro antioxidant activity of carboxymethyl glucans. Nat Prod Res 2023; 37:3048-3064. [PMID: 36562541 DOI: 10.1080/14786419.2022.2146109] [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: 09/05/2022] [Accepted: 11/03/2022] [Indexed: 12/24/2022]
Abstract
In this study, a degree substitution of 0.796 was obtained through the process of carboxymethylation (CMG). Carboxymethyl glucans with three different molecular weights (CMG-A, CMG-B and CMG-C) were obtained using membrane separation technology. Structural characterization and in vitro antioxidant activity were also evaluated. As per the outcomes of infrared spectroscopy spectroscopy and Nuclear magnetic resonance studies, CMG-A, CMG-B, CMG-C and contained carboxyl methyl groups. The substitution order of carboxymethylation branched-chain was as follows: 6δ > 4δ > 2δ. Atomic Force Microscope images obtained from the analysis of dilute aqueous solution (0.1 mg/mL) showed that some of the structures in CMG-A, CMG-B and CMG-C, were triple-helical species coexisting with larger aggregates and single chains. In vitro antioxidant experiment shown that the CMG-C had the best antioxidant property, the half-inhibitory concentration of hydroxyl radical scavenging, iron chelation and ABTS scavenging were 0.319, 0.168 and 1.344 mg/mL, respectively.
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Affiliation(s)
- Liang Ma
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou, Gansu Province, China
| | - Ten Chen
- College of Life Sciences, Northwest Normal University, Lanzhou, Gansu Province, China
| | - Jiaxin Wu
- School of Pharmacy Lanzhou University, Lanzhou University, Lanzhou, Gansu Province, China
| | - Xin Li
- Environmental and Applied Microbiology Key Laboratory, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, province, China
| | - Jie Wang
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou, Gansu Province, China
| | - Wenjian Li
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou, Gansu Province, China
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2
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Santra HK, Banerjee D. Drought alleviation efficacy of a galactose rich polysaccharide isolated from endophytic Mucor sp. HELF2: A case study on rice plant. Front Microbiol 2023; 13:1064055. [PMID: 36777025 PMCID: PMC9910089 DOI: 10.3389/fmicb.2022.1064055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2022] [Accepted: 12/29/2022] [Indexed: 01/27/2023] Open
Abstract
Endophytes play a vital role in plant growth under biotic and abiotic stress conditions. In the present investigation, a Galactose-Rich Heteropolysaccharide (GRH) with a molecular weight of 2.98 × 105 Da was isolated from endophytic Mucor sp. HELF2, a symbiont of the East Indian screw tree Helicteres isora. OVAT (One Variable at A Time) experiment coupled with RSM (Response Surface Methodology) study exhibited 1.5-fold enhanced GRH production (20.10 g L-1) in supplemented potato dextrose broth at a pH of 7.05 after 7.5 days of fermentation in 26°C. GRH has alleviated drought stress (polyethylene glycol induced) in rice seedlings (Oryza sativa ssp. indica MTU 7093 swarna) by improving its physicochemical parameters. It has been revealed that spray with a 50-ppm dosage of GRH exhibited an improvement of 1.58, 2.38, 3, and 4 times in relative water contents and fresh weight of the tissues, root length, and shoot length of the rice seedlings, respectively "in comparison to the control". Moreover, the soluble sugars, prolines, and chlorophyll contents of the treated rice seedlings were increased upto 3.5 (0.7 ± 0.05 mg/g fresh weight), 3.89 (0.57 ± 0.03 mg/g fresh weight), and 2.32 (1,119 ± 70.8 μg/gm of fresh weight) fold respectively, whereas malondialdehyde contents decreased up to 6 times. The enzymatic antioxidant parameters like peroxidase and superoxide dismutase and catalase activity of the 50 ppm GRH treated seedlings were found to be elevated 1.8 (720 ± 53 unit/gm/min fresh weight), 1.34 (75.34 ± 4.8 unit/gm/min fresh weight), and up to 3 (100 ppm treatment for catalase - 54.78 ± 2.91 unit/gm/min fresh weight) fold, respectively. In this context, the present outcomes contribute to the development of novel strategies to ameliorate drought stress and could fortify the agro-economy of India.
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Ma X, Dong L, He Y, Chen S. Effects of ultrasound-assisted H 2O 2 on the solubilization and antioxidant activity of yeast β-glucan. ULTRASONICS SONOCHEMISTRY 2022; 90:106210. [PMID: 36327922 PMCID: PMC9619374 DOI: 10.1016/j.ultsonch.2022.106210] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Revised: 10/11/2022] [Accepted: 10/21/2022] [Indexed: 06/16/2023]
Abstract
Yeast β-glucan (YG) possess an extensive range of biological activities, such as the inhibition of oxidation, but the poor water solubility of macromolecular YG limits its application. In this study, through the combined degradation of ultrasonic waves and H2O2, and the optimization of the main process parameters for solubilizing YG by response surface methodology (RSM), a new product of YGUH was generated. The molecular weight, structural characteristics and degradation kinetics before and after solubilization were evaluated. The results showed that the optimal solubilization conditions were reaction time: 4 h, ultrasonic power: 3 W/mL, H2O2 concentration: 24 %. Under these conditions, ultrasound-assisted H2O2 increased the solubility (from 13.60 % to 70.00 %) and reduced molecular weight (from 6.73 × 106 Da to 1.22 × 106 Da). Fourier transform infrared spectroscopy (FTIR), nuclear magnetic resonance (NMR), Congo red (CR), scanning electron microscopy (SEM) revealed that ultrasound-assisted H2O2 increased the conformation's flexibility greatly, without changing the main structure of YG. More importantly, solubilization of YG improved free radical scavenging activity with YGUH exhibiting the highest levels of DPPH and ABTS+ free radical scavenging activity. These results revealed that ultrasound-assisted H2O2 degradation could be a suitable way to increase the solubility of YG for producing value-added YG.
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Affiliation(s)
- Xia Ma
- School of Perfume and Aroma Technology, Shanghai Institute of Technology, No. 100 Haiquan Road, Shanghai 201418, PR China.
| | - Lin Dong
- School of Perfume and Aroma Technology, Shanghai Institute of Technology, No. 100 Haiquan Road, Shanghai 201418, PR China.
| | - Yan He
- School of Perfume and Aroma Technology, Shanghai Institute of Technology, No. 100 Haiquan Road, Shanghai 201418, PR China.
| | - Shiwen Chen
- Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200233, PR China.
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4
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Lin B, Huang G. An important polysaccharide from fermentum. Food Chem X 2022; 15:100388. [PMID: 36211774 PMCID: PMC9532711 DOI: 10.1016/j.fochx.2022.100388] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2022] [Revised: 07/03/2022] [Accepted: 07/05/2022] [Indexed: 11/21/2022] Open
Abstract
Extraction, structure and modification of polysaccharides from fermentum were summarized. Structure-activity relationship and application of polysaccharides from fermentum were reviewed. It provided a strong basis for the development and application of polysaccharides from fermentum.
Fermentum is a common unicellular fungus with many biological activities attributed to β-polysaccharides. Different in vivo and in vivo experimental studies have long proven that fermentum β-polysaccharides have antioxidant, anti-tumor, and fungal toxin adsorption properties. However, there are many uncertainties regarding the relationship between the structure and biological activity of fermentum β-polysaccharides, and a systematic summary of fermentum β-polysaccharides is still lacking. Herein, we reviewed the research progress about the extraction, structure and modification, structure–activity relationship, activity and application of fermentum β-polysaccharides, compared the extraction methods of fermentum β-polysaccharide, and paid special attention to the structure–activity relationship and application of fermentum β-polysaccharide, which provided a strong basis for the development and application of fermentum β-polysaccharide.
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Santra HK, Banerjee D. Production, Optimization, Characterization and Drought Stress Resistance by β-Glucan-Rich Heteropolysaccharide From an Endophytic Fungi Colletotrichum alatae LCS1 Isolated From Clubmoss ( Lycopodium clavatum). FRONTIERS IN FUNGAL BIOLOGY 2022; 2:796010. [PMID: 37744113 PMCID: PMC10512251 DOI: 10.3389/ffunb.2021.796010] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/15/2021] [Accepted: 11/22/2021] [Indexed: 09/26/2023]
Abstract
Endophytic entities are ubiquitous in nature with all-square bioactivity ranging from therapeutic effects toward animals to growth promoting attributes and stress tolerance activities in case of green plants. In the present study, the club moss Lycopodium clavatum for the first time has been subjected for the isolation of endophytic fungi. An exopolysaccharide (EPS) extracted from Colletotrichum alatae LCS1, an endophytic fungi isolated from L. clavatum Linn., was characterized as a β-glucan heteropolymer (composed of mannose, rhamnose, arabinose, glucose, galactose, and fucose) which plays a pivotal role in obliterating the drought stress in rice seedlings (Oryza sativa) when applied at an amount of 20, 50, and 100 ppm. The fresh weight contents of rice tissue (39%), total chlorophyll (33%), proline (41%), soluble sugar content (26%) along with antioxidant enzymes such as catalase, peroxidase, and super-oxide dismutase increased (in comparison to control of non-EPS treated seedlings) while malondialdehyde content had reduced markedly after 30 days of regular treatment. The drought resistance of rice seedling was observed at peak when applied at 50 ppm dosage. Vital parameters for EPS production like fermentation duration (5 days), medium pH (6), nutrient (carbon (glucose-7 g%/l), nitrogen (yeast extract-0.4 g%/l), and mineral (NaCl-0.10 g%/l) sources, oxygen requirements (O2 vector or liquid alkane-n-hexane, n-heptane, n-hexadecane), and headspace volume (250 ml Erlenmeyer flask- 50 ml medium, 200 ml-headspace volume) were optimized to obtain an enhanced EPS yield of 17.38 g/L-59% higher than the preoptimized one. The present study, for the first time, reported the β-glucan rich heteropolysaccharide from Colletotrichum origin which is unique in structure and potent in its function of drought stress tolerance and could enhance the sustainable yield of rice cultivation in areas facing severe drought stress.
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Affiliation(s)
| | - Debdulal Banerjee
- Microbiology and Microbial Biotechnology Laboratory, Department of Botany and Forestry, Vidyasagar University, Midnapore, India
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Elnagar SE, Tayel AA, Elguindy NM, Al-Saggaf MS, Moussa SH. Innovative biosynthesis of silver nanoparticles using yeast glucan nanopolymer and their potentiality as antibacterial composite. J Basic Microbiol 2021; 61:677-685. [PMID: 34146360 DOI: 10.1002/jobm.202100195] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2021] [Revised: 05/27/2021] [Accepted: 05/31/2021] [Indexed: 12/13/2022]
Abstract
Nanometals (NM) frequently possess potent antimicrobial potentials to combat various pathogens, but their elevated biotoxicity limits their direct applications. The biosynthesis of NM and their capping/conjugation with natural biopolymers can effectually enhance NM stability and diminish such toxicity. Yeast β-glucan (βG), from Saccharomyces cerevisiae, was extracted and transformed to nanoparticles (NPs) using alkali/acid facile protocol. The βG NPs were innovatively employed for direct biosynthesis of silver nanoparticles (Ag NPs) without extra chemical processes. The physicochemical assessments (Fourier-transform infrared, X-ray diffraction, and transmission electron microscopy) validated NPs formation, interaction, and interior capping of Ag NPs in βG NPs. The synthesized βG NPs, Ag NPs, and βG-Ag NPs composite were negatively charged and had minute particle sizes with mean diameters of 58.65, 6.72, and 63.88 nm, respectively. The NPs (plain Ag NPs and composited βG-Ag NPs) exhibited potent comparable bactericidal actions, opposing Gram+ (Staphylococcus aureus) and Gram- (Escherichia coli, Salmonella Typhimurium, and Pseudomonas aeruginosa). Scanning micrographs, of treated S. aureus and S. Typhimurium with βG-Ag NPs, elucidated the powerful bactericidal actions of nanocomposite for destructing pathogens' cells. The inventive Ag NPs biosynthesis with βG NPs and the combined βG-Ag NPs nanocomposites could be impressively recommended as powerful antibacterial candidates with minor potential toxicity.
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Affiliation(s)
- Sara E Elnagar
- Department of Fish Processing and Biotechnology, Faculty of Aquatic and Fisheries Sciences, Kafrelsheikh University, Kafr El Sheikh, Egypt
| | - Ahmed A Tayel
- Department of Fish Processing and Biotechnology, Faculty of Aquatic and Fisheries Sciences, Kafrelsheikh University, Kafr El Sheikh, Egypt
| | - Nihal M Elguindy
- Department of Biochemistry, Faculty of Science, Alexandria University, Alexandria, Egypt
| | - Mohammed S Al-Saggaf
- Department of Biology, College of Science and Humanitarian Studies, Shaqra University, Shaqra, Saudi Arabia
| | - Shaaban H Moussa
- Department of Biology, College of Science and Humanitarian Studies, Shaqra University, Shaqra, Saudi Arabia.,Department of Microbial Biotechnology, Genetic Engineering and Biotechnology Research Institute, University of Sadat City, Sadat City, Egypt
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Lu MK, Chao CH, Hsu YC, Chang CC. Structural sequencing and anti-inflammatory, anti-lung cancer activities of 1,4-α/β-sulfomalonoglucan in Antrodia cinnamomea. Int J Biol Macromol 2020; 170:307-316. [PMID: 33358951 DOI: 10.1016/j.ijbiomac.2020.12.135] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2020] [Revised: 12/04/2020] [Accepted: 12/17/2020] [Indexed: 12/31/2022]
Abstract
Antrodia cinnamomea is a precious Polyporaceous fungus with various bioactivities. This study reports the chemical identification and biological activities of sulfomalonoglucan, a sulfated polysaccharide (SPS), from the sodium sulfate enriched medium of the title fungus. The SPS-containing fraction was separated by gel filtration chromatography (GFC) to give the title SPS (denoted as Na10_SPS-F3). By analyzing the evidence for key inter-glycosidic linkages in the 1D and 2D NMR spectroscopic data, one possible repeat unit was proposed as: Na10_SPS-F3 inhibited the secretion of tumor necrosis factor (TNF-α) and interleukin (IL)-6 after lipopolysaccharide (LPS) stimulation in RAW264.7 macrophages. Mechanistically, Na10_SPS-F3 downregulated TGFRII also attenuated the LPS-induced IκB-α degradation. Moreover, Na10_SPS-F3 inhibited lung cancer cell H1975 EGFR/ERK signaling. This is the first paper reporting a 3-O-sulfomalonyl glucan (Na10_SPS-F3) with eight 1,4-β-Glc moieties connected with ten 1,4-α-Glc moieties from Antrodia cinnamomea and its anti-inflammatory and anti-cancer activities.
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Affiliation(s)
- Mei-Kuang Lu
- National Research Institute of Chinese Medicine, Ministry of Health and Welfare, Taipei, Taiwan; Graduate Institute of Pharmacognosy, Taipei Medical University, Taipei, Taiwan
| | - Chi-Hsein Chao
- National Research Institute of Chinese Medicine, Ministry of Health and Welfare, Taipei, Taiwan
| | - Yu-Chi Hsu
- National Research Institute of Chinese Medicine, Ministry of Health and Welfare, Taipei, Taiwan
| | - Chia-Chuan Chang
- School of Pharmacy, College of Medicine, National Taiwan University, Taipei, Taiwan.
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8
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Sun L, Yang Y, Wang R, Li S, Qiu Y, Lei P, Gao J, Xu H, Zhang F, Lv Y. Effects of exopolysaccharide derived from Pantoea alhagi NX-11 on drought resistance of rice and its efficient fermentation preparation. Int J Biol Macromol 2020; 162:946-955. [PMID: 32593756 DOI: 10.1016/j.ijbiomac.2020.06.199] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2020] [Revised: 06/03/2020] [Accepted: 06/21/2020] [Indexed: 12/12/2022]
Abstract
Exopolysaccharide (EPS) plays an important role in plant growth-promoting bacteria (PGPB)-mediated enhancement of plant abiotic stress resistance. In this study, it is found that EPS from Pantoea alhagi NX-11 foliar sprayed at 20, 50, and 100 ppm could significantly enhance drought resistance of rice seedlings. The fresh weight and relative water content of EPS sprayed were increased. In addition, malondialdehyde content reduced while total chlorophyll, proline and soluble sugar content, prominent enhanced. Meanwhile, the antioxidant enzymes, CAT, POD and SOD, were also significantly increased. The drought resistance of rice was most pronounced at the 50 ppm EPS dose. For the sake of commercializing the gram-negative EPS-producing PGPB which were difficult to preserve, it is vital to improve the EPS yield. First, the carbon source, nitrogen source and inorganic salt were optimized. Subsequently, the effect of three oxygen vectors, which could increase the efficiency of oxygen mass transfer, on EPS yield was studied by response surface methodology. The maximum EPS yield (19.27 g/L) was obtained, which is 51.7% higher than the initial yield of 12.7 g/L. Overall, it may provide a new way for the industrialization of PGPB to increase the yield of EPS.
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Affiliation(s)
- Liang Sun
- Jiangsu National Synergetic Innovation Center for Advanced Materials, College of Food Science and Light Industry, Nanjing Tech University, Nanjing 211816, China
| | - Yanbo Yang
- Jiangsu National Synergetic Innovation Center for Advanced Materials, College of Food Science and Light Industry, Nanjing Tech University, Nanjing 211816, China
| | - Rui Wang
- Jiangsu National Synergetic Innovation Center for Advanced Materials, College of Food Science and Light Industry, Nanjing Tech University, Nanjing 211816, China
| | - Sha Li
- Jiangsu National Synergetic Innovation Center for Advanced Materials, College of Food Science and Light Industry, Nanjing Tech University, Nanjing 211816, China
| | - Yibin Qiu
- College of Light Industry and Food Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Peng Lei
- Jiangsu National Synergetic Innovation Center for Advanced Materials, College of Food Science and Light Industry, Nanjing Tech University, Nanjing 211816, China; Nanjing Institute for Comprehensive Utilization of Wild Plants, China Co-op, Nanjing 211111, China.
| | - Jian Gao
- School of Marine and Bioengineering, Yancheng Institute Of Technology, Yancheng 224051, China
| | - Hong Xu
- Jiangsu National Synergetic Innovation Center for Advanced Materials, College of Food Science and Light Industry, Nanjing Tech University, Nanjing 211816, China.
| | - Fenglun Zhang
- Nanjing Institute for Comprehensive Utilization of Wild Plants, China Co-op, Nanjing 211111, China
| | - Yunfei Lv
- Agricultural and Rural Bureau of Yantai, Yantai 264000, China
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Muley AB, Ladole MR, Suprasanna P, Dalvi SG. Intensification in biological properties of chitosan after γ-irradiation. Int J Biol Macromol 2019; 131:435-444. [DOI: 10.1016/j.ijbiomac.2019.03.072] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2018] [Revised: 03/06/2019] [Accepted: 03/11/2019] [Indexed: 11/28/2022]
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10
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Bai J, Ren Y, Li Y, Fan M, Qian H, Wang L, Wu G, Zhang H, Qi X, Xu M, Rao Z. Physiological functionalities and mechanisms of β-glucans. Trends Food Sci Technol 2019. [DOI: 10.1016/j.tifs.2019.03.023] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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11
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Gamma radiation degradation of chitosan for application in growth promotion and induction of stress tolerance in potato (Solanum tuberosum L.). Carbohydr Polym 2019; 210:289-301. [DOI: 10.1016/j.carbpol.2019.01.056] [Citation(s) in RCA: 70] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2018] [Revised: 01/16/2019] [Accepted: 01/16/2019] [Indexed: 12/25/2022]
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12
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Radiation Degradation of β-Glucan Extracted from Brewer’s Yeast for Enhancing Growth Promotion and Immunostimulant Activities on Broilers. INT J POLYM SCI 2019. [DOI: 10.1155/2019/8901824] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Water-soluble low molecular weight β-glucan (WSLMG) was successfully prepared via γ-irradiation of insoluble β-glucan extracted from brewer’s yeast cell walls. The WSLMG content in an irradiated sample increased as the irradiation dose increased. The WSLMGs with a molecular weight (Mw) of 49, 25, and 11 kDa, obtained at correlative doses of 100, 200, and 300 kGy, respectively, were tested using growth promotion and immune stimulant effects in broilers. Supplementation with 500 ppm WSLMGs not only increased the survival rate (33.3%) and average body weight (40%) but also reduced the feed conversion rate (35.4%) in tested broilers. In addition, WSLMGs enhanced both nonspecific and specific immune components in the blood of supplemented broilers. The WSLMG with Mw ~25 kDa showed the highest effect on the growth performance and immunomodulatory capability in the immune systems of the tested broilers. In conclusion, this product demonstrates substantial promise as an immunostimulant and growth-promoting additive for poultry.
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Ma L, Chen Y, Wang X, Xiong M, Sun Y, Zhang X, Zhao Y. Design, characterization, and in vitro antiproliferative efficacy of gemcitabine conjugates based on carboxymethyl glucan. Bioorg Med Chem Lett 2018; 28:2920-2924. [PMID: 30017318 DOI: 10.1016/j.bmcl.2018.07.014] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2018] [Revised: 06/21/2018] [Accepted: 07/07/2018] [Indexed: 12/25/2022]
Abstract
Gemcitabine (GEM) is widely used in clinical practice in the treatment of cancer and several other solid tumors. Nevertheless, the antitumor effect of GEM is partially prevented by some limitations including short half life, and lack of tumor localizing. Carboxymethyl glucan (CMG), a carboxymethylated derivative of β-(1-3)-glucan, shows biocompatibility and biodegradability as well as a potential anticarcinogenic effect. To enhance the antiproliferative activity of GEM, four water soluble conjugates of GEM bound to CMG via diverse amino acid linkers were designed and synthesized. 1H NMR, FT IR, elementary analysis and RP-HPLC chromatography were employed to verify the correct achievement of the conjugates. In vitro release study indicated that conjugates presented slower release in physiological buffer (pH 7.4) than acidic buffer (pH 5.5) mimicking the acidic tumor microenvironment. Moreover, A549, HeLa and Caco-2 cancer cell lines were used to evaluate the in vitro cytotoxicity of conjugates and the results showed that binding GEM to CMG significantly enhanced antiproliferative activity of GEM on A549 cells. Therefore, these conjugates may be potentially useful as a delivery vehicle in cancer therapy and worthy of further study on structure-activity relationship and antiproliferative activity in vitro and in vivo, especially for lung tumor.
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Affiliation(s)
- Lu Ma
- Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Yuancai Chen
- Zhuhai Tianxiangyuan Biotechnology and Development Co., Ltd., Zhuhai 519000, China
| | - Xude Wang
- Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Mingzhou Xiong
- Zhuhai Tianxiangyuan Biotechnology and Development Co., Ltd., Zhuhai 519000, China
| | - Yuanyuan Sun
- Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Xiaoshu Zhang
- Shenyang Pharmaceutical University, Shenyang 110016, China; Key Laboratory of Structure-based Drug Design and Discovery, Ministry of Education, Shenyang Pharmaceutical University, Shenyang 110016, China.
| | - Yuqing Zhao
- Shenyang Pharmaceutical University, Shenyang 110016, China; Key Laboratory of Structure-based Drug Design and Discovery, Ministry of Education, Shenyang Pharmaceutical University, Shenyang 110016, China.
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14
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Khan AA, Gani A, Masoodi FA, Amin F, Wani IA, Khanday FA, Gani A. Structural, thermal, functional, antioxidant & antimicrobial properties of β-d-glucan extracted from baker's yeast (Saccharomyces cereviseae)-Effect of γ-irradiation. Carbohydr Polym 2016; 140:442-50. [PMID: 26876872 DOI: 10.1016/j.carbpol.2016.01.003] [Citation(s) in RCA: 60] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2015] [Revised: 12/23/2015] [Accepted: 01/01/2016] [Indexed: 11/15/2022]
Abstract
This study was carried out to evaluate the effect of γ-irradiation (0, 5, 10, 20, 30 & 50kGy) on the structural, functional, antioxidant and antimicrobial properties of yeast β-d-glucan. The samples were characterized by ATR-FTIR, gel permeation chromatography (GPC) and the thermal properties were studied using DSC. There was a decrease in the average molecular weight of β-d-glucan as the irradiation dose increased. The functional properties of irradiated yeast β-d-glucan were largely influenced by the action of gamma radiation like swelling power and viscosity decreases with increase in the irradiation dose while as fat binding capacity, emulsifying properties, foaming properties and bile acid binding capacity shows an increasing trend. All the antioxidant properties carried out using six different assays increased significantly (p≤0.05) in a dose dependent manner. The antibacterial activity of yeast β-d-glucan also showed an increasing trend with increase in the irradiation dose from 5 to 50kDa.
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Affiliation(s)
- Asma Ashraf Khan
- Department of Food Science and Technology, University of Kashmir, Srinagar 19006, India
| | - Adil Gani
- Department of Food Science and Technology, University of Kashmir, Srinagar 19006, India.
| | - F A Masoodi
- Department of Food Science and Technology, University of Kashmir, Srinagar 19006, India
| | - Furheen Amin
- Department of Food Science and Technology, University of Kashmir, Srinagar 19006, India
| | - Idrees Ahmed Wani
- Department of Food Science and Technology, University of Kashmir, Srinagar 19006, India
| | - Firdous Ahmad Khanday
- Department of Biotechnology, University of Kashmir, Hazratbal, Srinagar 19006, India
| | - Asir Gani
- Department of Food Technology, Faculty of Agro-Industry, Prince of Songkla University, Hat Yai 90112, Songkhla, Thailand
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15
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Khan AA, Gani A, Shah A, Masoodi F, Hussain PR, Wani IA, Khanday FA. Effect of γ-irradiation on structural, functional and antioxidant properties of β-glucan extracted from button mushroom (Agaricus bisporus). INNOV FOOD SCI EMERG 2015. [DOI: 10.1016/j.ifset.2015.05.006] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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