BIOSORPTION OF HEAVY-METALS BY SACCHAROMYCES-CEREVISIAE - EFFECTS OF NUTRIENT CONDITIONS

被引：45
作者：
ENGL, A [1 ]
KUNZ, B [1 ]
机构：
[1] UNIV BONN,INST LEBENSMITTELTECHNOL,D-53117 BONN,GERMANY
来源：
JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY | 1995年 / 63卷 / 03期
关键词：
SACCHAROMYCES CEREVISIAE; RECOVERY; BIOSORPTION; HEAVY METALS; CARBON SOURCE; GROWTH CONDITIONS; PHOSPHATE; CYSTEINE; AMMONIUM;
D O I：
10.1002/jctb.280630310
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：
Studies took place to investigate the effects of different nutrient conditions on the biosorption ability and selectivity of heavy metals by Saccharomyces cerevisiae. After having grown in media supplemented with additional glucose, ammonium, phosphate or cysteine, the yeast was exposed to an equimolar solution of lead, cadmium, zinc and copper. Lead removal from a mixed solution was significantly higher than that of copper, followed by zinc and cadmium. Generally, yeasts from cysteine-rich media showed greatest sorption capacity whereas phosphate addition influenced zinc selectivity. In addition, glucose, fructose and sucrose as carbon sources were examined. Cultures grown in glucose had a better uptake than those cultivated with fructose at an incubation time of 30 min.
引用
收藏
页码：257 / 261
页数：5
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