Effect of pH on Pb2+ accumulation in Saccharomyces cerevisiae and Aureobasidium pullulans

被引：4
|
作者：
Suh, JH [1 ]
Yun, JW
Kim, DS
机构：
[1] Ulsan Jr Coll, Dept Ind Chem, Ulsan 680749, South Korea
[2] Taegu Univ, Dept Biotechnol, Kyungbuk 712714, South Korea
[3] Catholic Univ Taegu Hyosung, Dept Environm Sci, Kyungbuk 712702, South Korea
来源：
BIOPROCESS ENGINEERING | 1999年 / 20卷 / 06期
关键词：
D O I：
10.1007/PL00009056
中图分类号：
Q81 [生物工程学（生物技术）]; Q93 [微生物学];
学科分类号：
071005 ; 0836 ; 090102 ; 100705 ;
摘要：
The optimum pH conditions of Pb2+ accumulation in Saccharomyces cerevisiae and Aureobasidium pullulans were 4 similar to 5 and 6 similar to 7, respectively. The initial Pb2+ accumulation rates according to the increase of initial Pb2+ concentration and pH were increased both in S. cerevisie and A. pullulans. And the initial Pb2+ accumulation rate of A. pullulans was much higher than that of S. cerevisiae because of the difference of Pb2+ accumulation mechanism. The Pb2+ accumulation isotherm of S. cerevisae obeyed a fully competitive inhibition, whereas that of A. pullulans showed a mixed inhibition of competition and non-competition associated with the proton (H+) as an accumulation inhibitor.
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页码：471 / 474
页数：4
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