【摘要】 以植酸钙作为唯一的磷源，从无花果中分离到一株产植酸酶的菌株，利用该菌株液体发酵所得到的粗酶处理脱脂大豆粉，３０℃下反应９０℃分钟，植酸（盐）降解率过７５％ ，处理液中可溶性蛋白质含量由０．１６７ｍ ｇ／ｍ ｌ增加到１２．１ｍ ｇ／ｍ ｌ。更多还原

【Abstract】 With phytate-Ca as the sole phosphorus source of selected medium, a extracellular phytase-producing strain was screened from the fiuum. Liquid fermentation was studied and a best fermentation medium was obtained, starch 8%, glucose 2%, NaNO 3 1.0%, KH 2PO 4 0.01%, KCl 0.05%, MgSO 4 0.05%,FeSO 4 0.01% and initial pH 5.0. Inoculating maount 10%, filling liquid volum 10%, extracellular phytase production as much as 870.87 pu/ml fermentation liquid was obtained at 30℃ after 8 days. Atleast 75% phytic acid of soybean was decomposed by the fermentating liquid at 30℃ for 90 min., and soluble protein content in treating liquid was increased from 0.167 mg/ml to 12.1 mg/ml.更多还原