Selection of high organic chromium yielding yeast strain after space piggyback experiment and its characteristic
文献类型： 外文期刊
作者： Lv Jia-ping;Gao Yan-hong;Liu Lu;Gao Yan-hong
作者机构：
关键词： Spaceflight-induced mutagenesis;glucose tolerance factor;glucose tolerance factor (GTF);organic chromium
期刊名称： AFRICAN JOURNAL OF MICROBIOLOGY RESEARCH
ISSN： 1996-0808
年卷期： 2012 年 6 卷 1 期
页码：
收录情况： SCI
摘要： A high yield yeast strain with glucose tolerance factor (GTF) was screened from seven original yeast strains and seven strains mutated by spaceflight-induced mutagenesis through gradient concentration of chromium (Cr) plate cultivation and liquid fermentation cultivation with biomass of 40 g/L. By extracting glucose tolerance factor with ammonia and determining the content of Cr with flame atomic absorption spectrometry, the content of organic Cr was found to be 1296 mu g/g and that of total Cr was 1926 mu g/g. The dynamic relationship between other parameters and the amount of organic chromium absorbed by the yeast was also determined during fermentation.
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