کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1281999 1497687 2006 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
The effect of nutrient limitation on hydrogen production by batch cultures of Escherichia coli
موضوعات مرتبط
مهندسی و علوم پایه شیمی الکتروشیمی
پیش نمایش صفحه اول مقاله
The effect of nutrient limitation on hydrogen production by batch cultures of Escherichia coli
چکیده انگلیسی

In order to understand some limiting factors in microbial hydrogen fermentation we have examined hydrogen production by different strains of Escherichia coli grown in batch cultures under different limiting nutrient regimes. The effect of mutations in uptake hydrogenases, in lactate dehydrogenase (ldhA), and fhlA, coding for the regulator of formate hydrogen lyase (fhl) component synthesis, were studied. Each mutation contributed to a modest increase in hydrogen evolution and the effects were synergistic. Various elements were used as limiting nutrient. In batch experiments, limitation for sulfate was without great effect. There was some affect of limiting phosphate with yields approaching 1 mol per mol of glucose. However, strains showed the highest yield of hydrogen per glucose (∼2∼2) when cultured at limiting concentrations of either ammonia or glucose.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hydrogen Energy - Volume 31, Issue 11, September 2006, Pages 1504–1508
نویسندگان
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