Effect of Selenoarginine on the Growth and Selenium Content Of Yeast
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Abstract:
to investigate the coordinated effect of vitamin E(VE) on the selenium enrichment of a rich selenium yeast using selenoarginine as the organic selenium resource. Selenoarginine was added into the medium at different concentration and in different fermentation time and Vitamin E was also added with different concentration into the medium containing 120 mg/L selenium. Weighing method and atomy fluorescent photometer were accepted to determine the growth curve and selenium content, respectively. Unlike with SeO2, selenoarginine had little inhibition effect on the growth of the yeast. Selenoarginine (120 mg/L) was added after 4 hour-fermentation of yeast and the selenium content could reach 87.0055 μg/g dry yeast after fermentated for 8 hours. It was also found that VE stimulated the growth of the yeast, but had little effect on the enrichment of selenium.
