超滤技术在芦荟凝胶汁生产中的应用研究

Study on the application of ultrafiltration in the production of aloe gel juice

研究了超滤技术在芦荟凝胶汁生产中的应用。用截留分子量为100,000D的PES膜进行超滤处理,可得到澄清且稳定的芦荟凝胶汁,各项技术参数如下:料液浓度0.2%±0.05%左右;循环速度0.75m3/h;操作压力0.2～0.35MPa。实验证明,超滤过程可基本保留芦荟凝胶汁的营养成分,有效去除产品中的微生物和部分褐变色素及苦味前体,可大大改善产品的品质和口感。

Ultrafiltration used in the production of Aloe Gel Juice was studied.Using membrane technique(size:100,000D),a clear and stable aloe g el juice was obtained.The operation conditions of the membrane separation are as follows:C=0.2±0.05%,V=0.75m 3 /h,P =0.2～0.35MPa.It was proven by experiment that nutrients of Aloe g el juice were kept mostly,microorg anisms,some browning colors and bitter substances were removed effectively.The quality and taste of the product were improved g reatly.