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首页> 外文期刊>Journal of King Saud University >Exopolysaccharide production by a new Lactobacillus lactis isolated from the fermented milk and its antioxidant properties
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Exopolysaccharide production by a new Lactobacillus lactis isolated from the fermented milk and its antioxidant properties

机译：通过新的乳杆菌乳酸乳酸乳酸酯（斜冻>斜体）和抗氧化特性分离

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摘要

Exopolysaccharides (EPSs) are synthesized various organisms, including bacteria. These EPSs are used as emulsifying agents in various industries and a search of novel food grade isolate is also a continuous process. In this line of investigation, EPS producingLactobacillus lactiswas used for this study. A potent exopolysaccharide producingLacobacillus lactiswas isolated from milk sources. EPS production was optimized by traditional method initially. Further EPS production was optimized by response surface methodology. Antioxidant properties of the isolated EPS were analyzed. Among various bacterial isolates,L. lactisshowed ability to produced maximum amount of exopolysaccharides. Addition of 1% (w/v) maltose enhanced the production of EPS. The nitrogen sources (1%, w/v) such as, ammonium sulphate, casein, skim milk and oat meal stimulated the production of EPS. EPS yield was enhanced for the components of culture medium like gelatine (0.78%), copper sulphate (0.039%) and maltose (0.31%) in optimized medium using Central Composite Design. The isolated EPS showed antioxidant property. Results suggest that EPS and the organism have wide application in food industry.
机译：脱寡糖（EPS）是合成的各种生物，包括细菌。这些EPS被用作各个行业的乳化剂，搜索新型食品级分离物也是一种连续的过程。在这种调查中，EPS生产司布乳酸乳杆菌用于本研究。从牛奶来源隔绝的一个有效的外偶糖乳酸乳酸乳酸乳酸盐。最初通过传统方法优化EPS生产。进一步的EPS生产通过响应面方法进行了优化。分析了孤立的EPS的抗氧化性能。在各种细菌分离物中，L。 Lactisshowed生产最大的脱氧糖量的能力。添加1％（w / v）麦芽糖增强了EPS的产生。氮源（1％，W / V）如硫酸铵，酪蛋白，脱脂牛奶和燕麦粉刺激了EPS的生产。使用中央复合设计在优化培养基中的培养基（0.78％），硫酸铜（0.039％）和麦芽糖（0.31％）中的培养基（0.78％），硫酸铜（0.31％）的组分提高了EPS产率。孤立的eps显示抗氧化性。结果表明，EPS和生物体在食品工业方面具有广泛的应用。

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