共查询到15条相似文献,搜索用时 93 毫秒
1.
采用生物发酵法制备了壳聚糖.在常用培养基中添加酒糟进行了正交实验,确定培养基组成为:玉米浆4%、烘干磨碎酒糟4%、葡萄糖3%、硫酸镁1%.得到了摇瓶发酵和15 L发酵罐中的发酵工艺.对发酵罐发酵过程的特征参数进行了初步研究,分析了生物量、pH值、残糖含量、Mg2 含量的变化,并绘制出变化曲线. 相似文献
2.
3.
4.
5.
The peel of Citrus changshan-huyou, coupled with wheat bran, could be utilized by Aspergillus niger P-6021 in slurry-state fermentation to produce pectinase with suitable enzyme composition for application in apple juice processing. The production of pectinase is improved by additional nitrogen source substances and mineral supplements. The ratio of carbon source substances to nitrogen source substances in the medium also has significant effect on the pectinase production by A. niger P-6021 in slurry-state fermentation. In the optimized medium composition, the maximal enzyme activity could reach 42 U.L^- 1 (polymethylgalacturonase), 6.7 U.L^- 1 (polymethygalacturatesterase), and 4.3 U.L^-1 (polymethylgalacturonate lyase), respectively, after 3 days at 180 r.min^- 1 and 30℃. The crude pectinase shows significant effect to improve the yield and clarification of apple juice. Keywords Aspergillus niger, slurry-state fermentation, pectinase, Citrus changshan-huyou, apple juice 相似文献
6.
7.
8.
9.
10.
壳聚糖复合絮凝剂在茶皂素提取工艺中的应用 总被引:17,自引:0,他引:17
壳聚糖复合絮凝剂在茶皂素提取工艺中的应用*该研究为江西省科委资助项目部分内容茶皂素是从山茶科植物油茶种子中提取出来的一类复杂的糖甙化合物。它是一种优良的天然非离子型表面活性剂,具有较强的发泡、乳化、分散、润湿、渗透功能,并且具有消炎、镇痛、杀菌、抗肿... 相似文献
11.
12.
本文通过分离筛选和紫外诱变法,选充出一株高产纤维素酶黑曲霉菌株S13,并进行了最佳固态发酵培养条件的研究,其结果为:最佳碳源为1%碱洗麦杆粉70%,麸皮30%;另加酵母膏0.68%,(NH_4)_2SO_4 0 35%,微量元素0.1%,Vogel’s母液4%,初始pH3.5培养温度30℃,培养时间为72~96 小时,在此条件下其β-葡萄糖苷酶活力达801.18mgG/h·g,CMC酶活6262.32mgG/h·g,滤纸酶活20.73IU。 相似文献
13.
14.