关键词: 罗汉果, 速溶, 罐组式动态逆流提取, 膜过滤, 膜浓缩

Abstract:

Objective: To study the preparation parameters of instant powder of Momordica grosvenori Swingle Fruit. Methods: Multi-stage countercurrent extraction technology, ultrafiltration technology and reverse osmosis technology was adopted in the preparation. Results: The optimum conditions for multi-stage countercurrent extraction technology were as follows: temperature 80 ℃,the ratio of material to water 1:10, time 30 min. The extraction ratio was more than 99% under such conditions. The optimum pore size of ultrafiltration membrane was 20000 D. The maximum admissible concentration of reverse osmosis technology was 8%, and under this condition, the loss of mogroside Ⅴ was less than 0.01%. Conclusion: The proposed method is efficient, energy-saving technology, and the effective components and flavor components were reserved.

Key words: Siraitia Grosvenorii, multi-stage countercurrent extraction technology, ultrafiltration technology, reverse osmosis technology