摘要
应用低水活度选择性增殖的方法从花卉、果园土壤、水果和蜂产品等样品中分离得到２６７株耐高渗酵母，其中２０６株生产阿拉伯醇、赤藓糖醇和甘油等各种多元醇．对随机挑选的６２株产多元醇的耐高渗酵母在不同质量浓度葡萄糖培养基中的生长特征进行了研究，结果显示酵母的耐高渗生长能力与其产多元醇的类别之间存在关联．在所调查的酵母中，产赤藓糖醇的酵母耐高渗生长能力最强、产阿拉伯醇的酵母耐高渗生长能力次之，产甘油的酵母耐高渗生长能力较弱．
A total of 267 strains of osmotolerant yeasts were isolated from flowers, fruits, soil and honey. A survey of these osmotolerant yeasts showed that glycerol, erythritol and arabitol were produced by 206 strains. The growth curves of 62 strains of polyol producing yeasts in the four kinds of media with different glucose concentrations were compared, and a striking observation was made that the erythritol producing strains were the most osmotolerant in the high glucose medium with concentration of up to 60%(w/w), those of arabitol producing strains were less osmotolerant, and those of glycerol producing strains were the least. It appeared that the extent of differences in osmotolerance of polyol producing yeasts were mrrelated to the type of palyols produced by the motderant yeasts.
