Optimization and characterization of exopolysaccharides from Leuconostoc citreum BH10 and its functional properties in vitro
文献类型： 外文期刊
作者： Ge, Zhiwen 1 ; Azi, Fidelis 2 ; Bao, Xuan 2 ; Yin, Xintao 2 ; Feng, Xue 2 ; Zhang, Min 2 ; Xia, Xiudong 1 ; Dong, Mingsheng 2 ;
作者机构： 1.Jiangsu Acad Agr Sci, Inst Agroprod Proc, Nanjing 210014, Peoples R China
2.Nanjing Agr Univ, Coll Food Sci & Technol, Nanjing 210095, Jiangsu, Peoples R China
3.Minist Sci & Technol, Jiangsu Key Lab Food Qual & Safety State, Key Lab Cultivat Base, Nanjing 210014, Peoples R China
关键词： Exopolysacchrides; Leuconostoc citreum BH10; Response surface methodology; Emulsifying property; Antibiofilm activities
期刊名称：FOOD PRODUCTION PROCESSING AND NUTRITION （ 影响因子：4.7； 五年影响因子：5.0 ）
ISSN：
年卷期： 2023 年 5 卷 1 期
页码：
收录情况： SCI
摘要： In this study, the yield of exopolysacchrides (LCEPS) produced by Leuconostoc citreum BH10 was optimized through the improvement of fermentation conditions. A three-level four-factor central composite design coupled with response surface methodology was employed to elucidate the interactions among four design variables, namely fermentation time (X-1), fermentation temperature (X-2), sucrose concentration (X-3), and inoculation amount (X-4) over a broad range of process conditions and determine their effects on LCEPS production. Based on the developed models, under the optimum process conditions of 49.99 h, 25.59 ?, 21.66, and 3.00%, the obtained maximum production of LCEPS was up to 55.96 g/L. Besides, the produced LCEPS presented better thermal stability than the original dextran and rendered finely emulsifying properties compared with commercial emulsifiers. Moreover, the LCEPS possessed good antioxidant activities and showed certain biofilm inhibition against Staphylococcus aureus ATCC 6538 strain, which indicated that it has fine potential to be used as an excellent additive into the food industry.
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