提高乳酸菌胞外多糖产量的途径

Strategies for Increasing of Exopolysaccharide Production in Lactic Acid Bacteria

乳酸菌胞外多糖(EPS)在改善发酵乳品流变学特性和质地等方面发挥重要作用,一些胞外多糖对人体健康还有促进作用,而胞外多糖的产量通常较低是限制其广泛应用的"瓶颈"因素。作者综述了通过优化发酵条件和基因工程技术提高乳酸菌胞外多糖产量的研究进展。

Exopolysaccharides （EPS） produced by lactic acid bacteria （LAB） play an important role in the rheology and texture of fermented dairy products. It has been suggested that some exopolysaccharides may confer health benefits to the consumer. However, low yields of in situ production of exopolysaccharide are potential bottlenecks for the industrial applications. Increasing exopolysaccharide production by optimizing physical and chemical cultivation conditions and genetic engineering of lactic acid bacteria were reviewed in this paper.