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Liu L, Xu J, Du R, Ping W, Ge J, Zhao D. The response surface optimization of exopolysaccharide produced by Saccharomyces cerevisiae Y3 and its partial characterization. Prep Biochem Biotechnol 2021; 52:566-577. [PMID: 34550854 DOI: 10.1080/10826068.2021.1972428] [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] [Indexed: 10/20/2022]
Abstract
Response surface methodology (RSM) was used to optimize the conditions of exopolysaccharides (EPSs) by Saccharomyces cerevisiae Y3. The results indicated that the yield of EPS reached 4.52 ± 0.14 g/L with 10.30% (w/v) sucrose, 0.64% (w/v) yeast extract, liquid volume 141.5 mL, which was 2.40 times the original EPS yield. Y3 EPS contained 83.65 ± 0.16% of total sugars, 15.27 ± 0.26% of uronic acid, 0.78 ± 0.02% of protein and 0.30 ± 0.12% of sulfuric acid groups. Y3 EPS maintained a relatively low viscosity, with intrinsic viscosities of 306.58 mL/g (25 °C) and 200.91 mL/g (35 °C), respectively. The EPS had high water solubility index (WSI), high water holding capacity (WHC) and good emulsifying ability (EA). Meanwhile, the EPS could absorb metal ions such as Cu2+, Fe2+ and Zn2+. In addition, Y3 EPS exhibited good antioxidant properties and coagulated skim milk with a concentration-dependent manner. These results indicated that S. cerevisiae Y3 EPS had applicable prospects in medicine, food, especially the dairy industry.
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Affiliation(s)
- Lina Liu
- Engineering Research Center of Agricultural Microbiology Technology, Ministry of Education, Harbin, PR China.,Laboratory of Microbiology, College of Life Science, Heilongjiang University, Harbin, Heilongjiang, PR China
| | - Jiaju Xu
- Engineering Research Center of Agricultural Microbiology Technology, Ministry of Education, Harbin, PR China.,Laboratory of Microbiology, College of Life Science, Heilongjiang University, Harbin, Heilongjiang, PR China
| | - Renpeng Du
- Engineering Research Center of Agricultural Microbiology Technology, Ministry of Education, Harbin, PR China.,Laboratory of Microbiology, College of Life Science, Heilongjiang University, Harbin, Heilongjiang, PR China
| | - Wenxiang Ping
- Engineering Research Center of Agricultural Microbiology Technology, Ministry of Education, Harbin, PR China.,Laboratory of Microbiology, College of Life Science, Heilongjiang University, Harbin, Heilongjiang, PR China
| | - Jingping Ge
- Engineering Research Center of Agricultural Microbiology Technology, Ministry of Education, Harbin, PR China.,Laboratory of Microbiology, College of Life Science, Heilongjiang University, Harbin, Heilongjiang, PR China
| | - Dan Zhao
- Engineering Research Center of Agricultural Microbiology Technology, Ministry of Education, Harbin, PR China.,Laboratory of Microbiology, College of Life Science, Heilongjiang University, Harbin, Heilongjiang, PR China.,Guangxi Key Laboratory for Polysaccharide Materials and Modifications, School of Marine Sciences and Biotechnology, Guangxi University for Nationalities, Nanning, Guangxi, China
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