摘要
观察温度和pH 值对产朊假丝酵母细胞与分离纯化的细胞壁对铜离子吸附的影响,探讨细胞壁在酵母吸附重金属离子过程中的作用pH 升高,细胞和细胞壁对铜离子的吸附能力都提高,吸附最适pH 为6-0 。温度升高可提高细胞和细胞壁的吸附能力,最适温度为50 ℃。细胞壁是铜离子吸附的主要部位,细胞壁嵌合蛋白(33 ×103蛋白) 起重要作用。
The bioaccumulation conditions of copper cation by yeast Candida utilis cells and isolated cell walls were investigated.The results showed that,with increase of pH,the accumlation of intact cells and cell walls were also enhanced.Temperature could enhance the accumulation capacity of intact cells and cell walls.The optimum tempreture is 50℃,the optimum pH is pH6.0.The cell walls of yeast were the main sites for heavy metal accumulation, in which 33×10 3 protein play very important roles.
出处
《生物学杂志》
CAS
CSCD
1999年第6期11-12,共2页
Journal of Biology
基金
国家自然科学基金!(39500074)
