霍山石斛多糖对嗜酸乳杆菌生理特性影响研究  

The effects of polysaccharides from Dendrobium huoshanense on physiological characteristics of Lactobacillus acidophilus

作　　者：孟鸽[1] 魏明[1] 赵世光[1] 张珂[1] 余茂元 

机构地区：[1]安徽工程大学生物与化学工程学院,芜湖241000

出　　处：《食品科技》2017年第4期184-187,193,共5页Food Science and Technology

基　　金：安徽省自然科学基金项目(1408085MC65)

摘　　要：研究了霍山石斛多糖对嗜酸乳杆菌生长的影响,分析了嗜酸乳杆菌生长过程中碳源的利用和蛋白质、乳酸的合成情况以及LDH、SOD、GSH-Px酶活力变化规律。结果表明,当添加霍山石斛多糖浓度为6 g/L时,嗜酸乳杆菌生物量及生长速度较对照组明显提高。此浓度下,还原糖的利用和蛋白质及乳酸的合成量均高于对照组;同时发现添加多糖提高了嗜酸乳杆菌LDH、SOD、GSH-Px 3种酶活力。The effects of polysaccharides from Dendrobium huoshanense on growth of Lactobacillus acidophilus were studied. The utilization of carbon sources, the synthesis of protein and the content of lactic acid were analyzed. The activities of LDH, SOD and GSH-Px produced by Lactobacillus acidophilus were measured. The results showed that the optimal concentration of polysaccharides from Dendrobium huoshanense for promoting the growth of Lactobacillus acidophilus was 6 g/L. In this concentration, the utilization amount of reducing sugar, the content of protein and lactic acid were higher than that of the control. Meanwhile it was found that the activities of LDH, SOD, GSH-Px increased compared with the control.

关 键 词：嗜酸乳杆菌 霍山石斛 多糖 生理特性 

分 类 号：Q935[生物学—微生物学]