酵母菌富集硒、铬能力的研究

研究了两株酵母菌不同培养条件下富集硒和铬的能力。结果表明，培养基成分、酵母菌种类、微量元素的含量以及培养时间都会影响酵母菌对硒和铬的富集能力。培养基较高的蛋白质和P2O5的含量有利于酵母菌对硒、铬的富集；提高培养基中的硒和铬的含量，酵母菌富集能力明显提高，但是高浓度的盐类对酵母菌的生长有明显的抑制作用；在对数生长期酵母菌富集能力最强。

Study on the Capability of Concentrating Selenium Ions and Chromium Ions of Yeast

In this research we compared the capability of concentrating selenium ions and chromium ions of two yeast strains under different culture conditions. The results showed that culture medium composition, yeast species, trace element contents and culture time could influence concentrating capability of yeast. Higher protein and P2O5 content in culture medium was more advantageous to ion concentration. When selenium and chromium salt was added in culture medium, the concentrating capabilities of both yeast strains were improved. However, high salt concentration would inhibit evidently yeast growth. The concentrating capability of both yeast strains reached the highest in the period of logarithmic phase. (Tran. by YUE Yang)