乳酸菌胞外多糖的研究进展

Research Advance on Exopolysaccharides Synthesized by Lactic Acid Bacteria

乳酸菌胞外多糖是乳酸菌生长代谢过程中产生并分泌到细胞外的一种天然高分子聚合物。作为一种新型的天然食品添加剂,乳酸菌胞外多糖因其独特的生理功能和产业潜力而备受研究者青睐。但由于乳酸菌胞外多糖结构组分、功能效用的不同,很难建立一个通用的生产方法和检测标准。另外,如何提高胞外多糖产量也是未来要面临的一大挑战。从乳酸菌胞外多糖的遗传研究、结构修饰、构效关系、生物学活性几个方面进行综述,并对未来研究方向进行展望。

Exopolysaccharides(EPS) of lactic acid bacteria(LAB) are natural polymers produced by LAB.As a new type of natural food additives,EPS of LAB catch the attention of researchers by its immense physiological function and industrial potential.But due to the differences between the composition and function of EPS,It is difficult to establish universal methods and criterions of detection.Also,how to improve the yield of EPS is a great challenge.The genetics of EPS,structure analysis,structure-function relationship,biological activity and further researches will be summarized.