The effect of certain vitamin K compounds upon the respiration of Saccharomyces cerevisiae期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

The effect of certain vitamin K compounds upon the respiration of Saccharomyces cerevisiae

Authors:	HINZ C F HARRIS J O

Affiliation:	1. National Institute of Oceanography and Fisheries, NIOF, Cairo, Egypt;2. Department of Animal Production, Fish Research Laboratory, Faculty of Agriculture at Moshtohor, Benha University, Benha 13736, Egypt

Abstract:	1.1. Respiration of Saccharomyces cerevisiae in the presence of glucose is inhibited by concentrations of 2-methyl-1,4-naphthoquinone (K₃) and 2-methyl-4-aminonaphthol hydrochloride (K₅) of the magnitude of 200–500 μg./ml. The production of CO₂ under aerobic and anaerobic conditions seems to be more sensitive to the effects of these compounds than does oxygen utilization. The phosphorylated ester of K₃ did not show any marked effect on the respiratory activity of the yeast. 2.2. Respiration of yeast with fructose 1,6-diphosphate, sodium pyruvate, and ethyl alcohol as substrates revealed the inhibitory effects of K₃ and K₅ to be somewhat similar.

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