摘要
通过对窖泥、大曲、米曲、黑曲及红曲中微生物的分离、筛选，获得两株己酸乙酯合成能力较强的菌株，经初步鉴定，都归于曲霉属．两菌株均在３０℃、ｐＨ为５的皮培养基中培养６０ｈ后产酶最高；Ｍｍ—４菌株的酯化酶在适宜条件下（２％乙醇和０．２５％的己酸作底物，ｐＨ为４．０，３０℃）酶活力可达２２０ｕ／ｇ．
Two strains of Aspergillus with higher esterifying enzyme activity were isolated from pit earth and fermenting agent bricks. When they were cultivated in bran medium of initial pH 5. 0 for 60 hours at 30℃,enzyme productions reached their highest. As for the esterifying enzyme of Mm-4 strain,at the optimum conditions (2% alcohol and 0. 25% caproic acid,pH 4. 0,30℃ ),enzyme activity reached its highest of 220 u/g.
出处
《科技通报》
1996年第6期333-337,共5页
Bulletin of Science and Technology
基金
浙江省自然科学基金
