DM·MC共聚物对α－酮基－L－古龙酸发酵液的除蛋白性能  

Performance of DM·MC Copolymers of Removing Proteins from α-Keto-L-Gulonic Acid Fermentation Broth

作　　者：夏杰[1] 单建国[1] 郭无昕 章学钦[1] 

机构地区：[1]华东理工大学生物反应器工程国家重点实验室

出　　处：《华东理工大学学报（自然科学版）》1996年第6期712-716,共5页Journal of East China University of Science and Technology

摘　　要：在研究由二步发酵法制维生素Ｃ的α－酮基－Ｌ－古龙酸发酵液除蛋白工艺过程中，重，人考察甲基丙烯酰氧乙基三甲基氯化铵（ＤＭ·ＭＱ与丙烯腈共聚物的除蛋白效率。证明此结构的凝聚剂对于微生物发酵液中的蛋白质具有优良的凝聚能力，去除可溶性蛋白质达９４％～９５％，超过一般有机高分子阳离子凝聚剂，并确定了此共聚物结构中阳离子度７０％～８０％的共聚物具有最佳效果。In research of the process to remove proteins from fermetation broth of aketoL-gulonlc acid in the production of Vitaminp C by two-step fermentation,special attention was paid on the performance of acrylonitrile-methacryloyloethyl trimethylammonium chloride(AN-DM-MC)copolymers. These copolymers have excellent ability to flocculate proteins from the fermentation broth and can remove 94%～95% of soluble proteins.In this respect DM. MC copolymers exceed the usual high molecular organic cationic flocculants. It is discussed and concluded that the copolymer having 70%～80% cationic charge density in its molecular chain is the most effective structure.

关 键 词：凝聚剂 酮基 古龙酸 维生素C DM.MC 共聚物 

分 类 号：TQ314.253[化学工程—高聚物工业]