Process for preparing concentrated solution of fresh siraitia grosvenorii by adopting membrane separation technology

Abstract

The invention discloses a process for preparing a concentrated solution of fresh siraitia grosvenorii by adopting a membrane separation technology. The process comprises the steps that the fresh siraitia grosvenorii is firstly crushed and repeatedly immersed in water at a temperature of 40 to 95 DEG C for 6 to 16 hours; a filtrate is obtained after the fresh siraitia grosvenorii is pretreated and filtered, and the temperature is reduced to 25 to 55 DEG C; the filtrate is sequentially sent into an integrated membrane combination system under pressure of 0.05 to 3.0MPa via a pressure pump, so as to be gradually separated, purified and concentrated by combinational membrane pieces comprising a MF (microfiltration) membrane piece, an UF (ultrafiltration) membrane piece, an RS (reverse osmosis) membrane piece, and the like; and a concentrated solution product of the fresh siraitia grosvenoriim, which has a baume degree of 16 to 35, is finally obtained. The process method disclosed by the invention has the advantages of high product purity, good product clarity, good product transmittance, good product stability, mild operation environment, low energy consumption, simple equipment and low investment; and no chemical reagent needs to be added, the environment is not polluted, and plant active components of the product are reserved to the maximum limit.

Description

technical field [0001] The invention relates to Luo Han Guo, in particular to a process for preparing fresh Luo Han Guo concentrate by adopting membrane separation technology. Background technique [0002] Luo Han Guo (scientific name: Siraitia grosvenorii swingle), a plant of the genus Luo Han Guo in the family Cucurbitaceae, is one of the first batch of medicinal and edible plants announced by the Ministry of Health. It is a precious raw material for the pharmaceutical and food industries, with high nutritional and economic value . The fresh ointment made from fresh Luo Han Guo has the functions of clearing away heat and moistening the lungs, relieving cough and reducing phlegm, moistening the intestines and laxative, lowering blood pressure, lowering blood fat, protecting the liver and lowering transaminase; the beverage made with the fresh ointment has fascinating and unique Sweet flavor; fresh cream can be used to prepare various functional beverages and food additives...

AI Technical Summary

Problems solved by technology

These methods are all prepared by traditional diatomite filtration, plate and frame filtration, clarifying agent method, alcohol precipitation method, enzymatic precipitation method and other biochemical methods. These processes cannot be effective for the various components of fresh Monk Fruit extract. In addition, there are still problems such as difficulty in filtration and easy blockage, large consumption of solvent in alcohol precipitation method, addition of foreign substances in enzymatic precipitation method and other biochemical methods, low product purity, low yield and complicated process. The equipment investment is large, and the obtained fresh Luo Han Guo concentrate product is prone to precipitation. During production and extraction, the amount of waste water is large and pollutes the environment.

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