用啤酒糟酶解液培养酵母菌产麦角固醇的研究

以麦角固醇质量分数达３％以上的酵母菌株Ｙｓ－５和Ｙｓ－１６为培养菌,进行了用啤酒糟酶解液代替糖蜜培养基发酵生产麦角固醇的实验．结果表明,在最适条件下,添加少量自溶性酵母,酵母菌的麦角固醇产率可提高２０％左右．     

Evaluating the Use of Ergosterol as a Bioindicator for Assessing Fungal Response to Water Quality

This study investigated the in situ productionof fungal biomass on presterilized woody substratessubmerged in natural estuarine and freshwater bodiesenriched with nitrogen and phosphorus-containingchemical compounds. Results suggest that themembrane-bound sterol ergosterol may hold significantpromise as an quantitative indicator of fungalresponse to water quality. We suggest that realisticassessment of the environmental health of naturalwaters should include a suite of bioassays that couldmeasure the response of living organisms to pollutionmuch more directly than could be predicted by current,indirect monitoring techniques.     

赭曲霉43的甾醇成分研究

从赭曲霉43的菌丝体甲醇提取物中分离得到3个甾醇和1个腺苷，根据波谱数据，将它们鉴定为：5α，8α-表二氧-(20S，22E，24R)-麦角甾-6，22-二烯-3β-醇(1)、(20S，22E，24R)-麦角甾-7，22-二烯-3β，5α，6β-三醇(2)、(20S，22E，24R)-麦角甾-7，22-二烯-3β，5α，6β，9α-四醇(3)以及尿苷(4)，其中化合物3首次从曲霉属中分离得到．图2表1参16。