超滤膜除谷氨酸发酵液中菌体对等电提取收率的影响

Study on removal of colony from glutamic acid fermentation by ultrafiltration

采用截留分子量 (MWCO)为 6万和 1万的卷式超滤膜 ,去除谷氨酸发酵液中的菌体 ,同时将发酵液中的固含量浓缩 10倍 ,再利用等电法提取谷氨酸 .经超滤后的发酵液等电收率可达到 90 .96 % .在提高等电收率的同时 ,菌体的去除还降低了污水的处理负荷 .

In this paper,clarification of glutamic acid fermentation was carried out with ultrafiltration.Glutamic acid was extracted from ultrafiltration permeat by iso-electric point.Its extraction rate reaches 90.96%.This process can makes glutamic acid quanlity better and the wastewater treatment easier.