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Vanin AP, Visentin EZ, Fontana RC, di Medeiros Leal MCB, de Avila E Silva S, Stokke BT, Carbonero ER, Camassola M. β-(1 → 3)(1 → 6)glucan from Schizophyllum commune 227E.32: High yield production via glucose/xylose co-metabolization. Carbohydr Polym 2023; 320:121176. [PMID: 37659785 DOI: 10.1016/j.carbpol.2023.121176] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2023] [Revised: 06/15/2023] [Accepted: 07/04/2023] [Indexed: 09/04/2023]
Abstract
A co-metabolization of xylose and glucose by Schizophyllum commune 227E.32 wild mushroom for exopolysaccharide (EPS) production is presented. Cultivations performed with S. commune 227E.32 at different xylose concentrations demonstrated that the concentration of 50 g·L-1 of xylose achieved the highest EPS production, around 4.46 g·L-1. Scale-up in a stirred tank reactor (STR) was performed. 10 % inoculum showed the highest cost/benefit ratio regarding sugar conversion and EPS production (Y P/S = 0.90 g·g-1), achieving 1.82 g·L-1 of EPS. Isolation, purification, and characterization were conducted with EPS produced in flasks and STR. GC-MS analysis showed glucose as main monosaccharide constituents for both isolates. 13C NMR and HSQC-edited showed that both EPS isolated consisted of a β-D-Glcp (1 → 3) main chain, partially substituted at O-6 with nonreducing β-D-Glcp ends on every third residue, similar to β-D-glucan isolated from S. commune basidiomes known as schizophyllan (SPG). The Mw was determined by GPC to 1.5 × 106 Da (flasks) and 1.1 × 106 Da (STR). AFM topographs revealed a semi-flexible appearance of the β-D-glucan, consistent with the triple helical structures adopted by SPG and overall contour length consistent with a high molar mass.
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Affiliation(s)
- Ana Paula Vanin
- Enzymes and Biomass Laboratory, Institute of Biotechnology, University of Caxias do Sul, Caxias do Sul, RS, Brazil.
| | - Esther Ziliotto Visentin
- Enzymes and Biomass Laboratory, Institute of Biotechnology, University of Caxias do Sul, Caxias do Sul, RS, Brazil
| | - Roselei Claudete Fontana
- Enzymes and Biomass Laboratory, Institute of Biotechnology, University of Caxias do Sul, Caxias do Sul, RS, Brazil
| | | | - Scheila de Avila E Silva
- Computational Biology and Bioinformatics Laboratory, Bioinformatics Research Center, Institute of Biotechnology, University of Caxias do Sul, Caxias do Sul, RS, Brazil
| | - Bjørn Torger Stokke
- Biophysics and Medical Technology, Department of Physics, NTNU Norwegian University of Science and Technology, Trondheim, Norway
| | | | - Marli Camassola
- Enzymes and Biomass Laboratory, Institute of Biotechnology, University of Caxias do Sul, Caxias do Sul, RS, Brazil
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Azmi G, Saada AM, Shokir EM, El-Deab MS, Attia AM, Omar WAE. Adsorption of the Xanthan Gum Polymer and Sodium Dodecylbenzenesulfonate Surfactant in Sandstone Reservoirs: Experimental and Density Function Theory Studies. ACS OMEGA 2022; 7:37237-37247. [PMID: 36312333 PMCID: PMC9608398 DOI: 10.1021/acsomega.2c03488] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/04/2022] [Accepted: 10/03/2022] [Indexed: 06/16/2023]
Abstract
Chemical flooding using a polymer and/or surfactant has been widely applied in oilfields worldwide for enhanced oil recovery. Chemical adsorption in reservoirs has a significant effect on the rock permeability and wettability and hence can affect the overall oil production. In this work, two chemicals, namely, the xanthan gum (XG) biopolymer and sodium dodecylbenzenesulfonate (SDBS) anionic surfactant, were used individually as displacement fluids. The amount of chemical adsorption on the rock surface and the residual resistance factor (permeability reduction) were calculated throughout the flooding experiments using an unconsolidated sandstone (SS) pack model. The effects of the injected chemicals' concentration and reservoir salinity on adsorption capacity have been examined. Additionally, the effect of the addition of nanosilica particles (NSPs) to the injected fluid on the rock adsorption was also investigated. The results showed that the amount of XG and SDBS adsorption on the rock surface increased, albeit to a different extent, by increasing the chemical concentration at the applied salinities (0, 3.5, 5, and 10%) of the displacement fluids. Also, the permeability reduction increased with the increase in XG and SDBS concentrations; however, permeability reduction due to SDBS flooding was lower than that of XG in SS. The use of NSPs as a coinjectant to the XG and SDBS displacement fluids increased the adsorption on the SS rock. A plausible mechanism for the adsorption of the XG/NSP and SDBS/NSP blends on the SS surface was proposed. A density function theory calculation was employed to establish a relation between the adsorptivity of NSPs on SDBS and XG and the total energy and dipole moment of the molecules.
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Affiliation(s)
- George
E. Azmi
- Faculty of Energy
and Environmental Engineering (FEEE), The
British University in Egypt, Cairo 11837, Egypt
| | - Aya M. Saada
- Faculty of Energy
and Environmental Engineering (FEEE), The
British University in Egypt, Cairo 11837, Egypt
| | - Eissa M. Shokir
- Gas Production Engineering Department,
Faculty of Engineering, Cairo University, Cairo 12613, Egypt
| | - Mohamed S. El-Deab
- Department of Chemistry, Faculty of Science, Cairo University, Cairo 12613, Egypt
| | - Attia M. Attia
- Faculty of Energy
and Environmental Engineering (FEEE), The
British University in Egypt, Cairo 11837, Egypt
| | - Walaa A. E. Omar
- Faculty of Energy
and Environmental Engineering (FEEE), The
British University in Egypt, Cairo 11837, Egypt
- Department of Engineering Sciences and Mathematics, Faculty of Petroleum
and Mining Engineering, Suez University, Suez 8151650, Egypt
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Meng Q, Chuai S, Chen L, Wang L, Cai G, Mao J, Gu Z, Shi G, Ding Z. Effect of surfactants on the production of polysaccharides from Schizophyllum commune through submerged fermentation. Int J Biol Macromol 2021; 192:210-218. [PMID: 34619278 DOI: 10.1016/j.ijbiomac.2021.09.191] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Revised: 09/28/2021] [Accepted: 09/28/2021] [Indexed: 11/17/2022]
Abstract
Schizophyllum commune (S. commune) polysaccharides are biomacromolecules with multiple biological activities and wide applications. In this study, polysaccharide production through submerged fermentation of S. commune using different surfactants was investigated. The addition of 1 g/L of polyoxyethylene sorbitan monooleate (Tween 80) at the beginning of the fermentation showed the best promotional effects on collective exopolysaccharide (EPS) production (which increased by 37.17%) while shortening the production cycle by 2 days. The monosaccharide composition of the EPS produced when the added Tween 80 was similar to that of the control; however, the molecular weight (Mw) was lower. Notably, the addition of Tween 80 significantly increased the ATP levels and the transcription levels of phosphoglucomutase and β-glucan synthase genes in the polysaccharide synthesis pathway. The addition of Tween 80 reduced the pellet size of the mycelium compared to that of the control, but did not significantly change the microstructure of the mycelial cells. This study proposes an efficient strategy for the production of polysaccharides through submerged fermentation of S. commune, and elucidates the detailed mechanism of using Tween 80 as a fermentation stimulatory reagent.
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Affiliation(s)
- Qi Meng
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China; National Engineering Laboratory for Cereal Fermentation Technology, Jiangnan University, Wuxi 214122, China
| | - ShiChen Chuai
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China; National Engineering Laboratory for Cereal Fermentation Technology, Jiangnan University, Wuxi 214122, China
| | - Lei Chen
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China
| | - Lingling Wang
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China
| | - Guolin Cai
- National Engineering Laboratory for Cereal Fermentation Technology, Jiangnan University, Wuxi 214122, China; Jiangsu Industrial Technology Research Institute, Jiangnan University (Rugao) Food Biotechnology Research Institute, Nantong 226500, China
| | - Jinsheng Mao
- Jiangsu Industrial Technology Research Institute, Jiangnan University (Rugao) Food Biotechnology Research Institute, Nantong 226500, China
| | - Zhenghua Gu
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China; National Engineering Laboratory for Cereal Fermentation Technology, Jiangnan University, Wuxi 214122, China
| | - Guiyang Shi
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China; National Engineering Laboratory for Cereal Fermentation Technology, Jiangnan University, Wuxi 214122, China
| | - Zhongyang Ding
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China; National Engineering Laboratory for Cereal Fermentation Technology, Jiangnan University, Wuxi 214122, China.
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Bai Y, Zhang Q, Sun J, Shang X, Lv K, Wang F. Disproportionate filtration behaviors of polymer/chromium gel used for fracture plugging. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.117567] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Deng Y, Huang Q, Hu L, Liu T, Zheng B, Lu D, Guo C, Zhou L. Enhanced exopolysaccharide yield and antioxidant activities of Schizophyllum commune fermented products by the addition of Radix Puerariae. RSC Adv 2021; 11:38219-38234. [PMID: 35498081 PMCID: PMC9044015 DOI: 10.1039/d1ra06314f] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Accepted: 11/09/2021] [Indexed: 12/14/2022] Open
Abstract
To increase the production of exopolysaccharides (EPS) and expand the application of Schizophyllum commune (S. commune) fermentation liquid, the traditional Chinese medicine Radix Puerariae (RP) with outstanding biological activity was selected as a culture additive to improve the EPS yield and enhance the antioxidant activity of fermented products from S. commune. The effects of three independent factors: A: initial pH (5.0-6.0), B: concentration of RP (10-14 g L-1), and C: inoculum size (8-12%, v/v) on the EPS yield were evaluated. The results of response surface methodology (RSM) showed that the optimal fermentation conditions were: A: 5.40, B: 12.80 g L-1, and C: 10.0%. The optimal yield of EPS was 8.41 ± 0.12 mg mL-1, which showed an insignificant (p > 0.05) difference with the predicted value (8.45 mg mL-1). The fermented supernatants cultured from RP-supplemented medium (SC-RP) or regular medium (SC) were collected for further study. FT-IR analysis of EPS-1 (purified from SC) and EPS-2 (purified from SC-RP) showed that their structures were consistent, indicating that the addition of RP did not affect the structure of schizophyllan (SPG). In addition, compared with SC, the in vitro antioxidant activities of SC-RP were significantly improved with ORAC values and FRAP values increasing by 11.56-fold and 14.69-fold, respectively. There was a significant correlation among the phenolic compounds, flavonoids, and antioxidant activity of SC-RP in this study. Besides, SC-RP was detected to contain more than 25 bioactive ingredients compared with that of SC, which may play a key role in its antioxidant activities. Thus, these results indicated that RP enhanced the yield of SPG and improved the antioxidant activity of the fermented products by S. commune. Accordingly, the fermentation liquid of S. commune with the addition of RP may have potential application in food, cosmetics, and pharmaceutical industries.
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Affiliation(s)
- Yongfei Deng
- School of Light Industry and Food Engineering, Guangxi University Nanning 530004 People's Republic of China
- Research and Development Center, Guangdong Marubi Biotechnology Co., Ltd Guangzhou 510700 People's Republic of China
- Guangdong Province Key Laboratory for Biotechnology Drug Candidates, School of Biosciences and Biopharmaceutics, Guangdong Pharmaceutical University Guangzhou 510006 People's Republic of China +86-20-39352151 +86-20-39352151
| | - Qian Huang
- Guangdong Province Key Laboratory for Biotechnology Drug Candidates, School of Biosciences and Biopharmaceutics, Guangdong Pharmaceutical University Guangzhou 510006 People's Republic of China +86-20-39352151 +86-20-39352151
| | - Lu Hu
- Research and Development Center, Guangdong Marubi Biotechnology Co., Ltd Guangzhou 510700 People's Republic of China
| | - Tao Liu
- School of Light Industry and Food Engineering, Guangxi University Nanning 530004 People's Republic of China
| | - Bisheng Zheng
- School of Food Science and Engineering, South China University of Technology Guangzhou 510641 People's Republic of China
| | - Dengjun Lu
- School of Light Industry and Food Engineering, Guangxi University Nanning 530004 People's Republic of China
| | - Chaowan Guo
- Research and Development Center, Guangdong Marubi Biotechnology Co., Ltd Guangzhou 510700 People's Republic of China
| | - Lin Zhou
- Guangdong Province Key Laboratory for Biotechnology Drug Candidates, School of Biosciences and Biopharmaceutics, Guangdong Pharmaceutical University Guangzhou 510006 People's Republic of China +86-20-39352151 +86-20-39352151
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Shang X, Bai Y, Lv K, Dong C. Experimental study on viscosity and flow characteristics of a clay-intercalated polymer. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2020.114931] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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