Novel technique for preparing tea saponin by solvent extraction and selectively separating integration

Abstract

The invention relates to a novel process for preparing tea saponin, which integrates solvent extraction and selective separation. The steps are as follows: a. extraction and absorption: adding proper amount of the defatted cake of degreased oil-tea into a sorbitic extractor and adding macroporous absorption resin into the round bottom flask with low-concentration organic solvent, which is then heated up and back flowed; b. absorption stripping: addubg the macroporous absorption resin which has absorbed tea saponin into the solution of high-concentration organic solvent, which is heated up and back flowed in the round bottom flask to obtain the solution of tea saponin through filtering; c. obtaining the products of tea saponin by decoloring and spray drying the solution of tea saponin. The invention has the advantages that macroporous absorption resin is used to absorb tea saponin simultaneously while the tea saponin is extracted and solvent extraction and selective separation are integrated so that the manufacturing process is shortened, the energy consumption and production cost are reduced, the pollution during the process is decreased, the extracting solution is recycled and the consumption of organic solvent is reduced substantially, which can make full use of and fully develop the resource of defatted oil-tea cake.

Description

technical field [0001] The invention relates to a method for extracting tea saponin from dried Camellia oleifera cake as a raw material, in particular to a new process for preparing tea saponin by integrating solvent extraction and selective separation. Background technique [0002] Camellia oleifera is a unique woody oil plant in my country, and it is also an oil crop that has been vigorously developed in my country. Camellia oleifera has a high comprehensive utilization value. After oil production, Camellia oleifera cake contains 10-15% of Camellia saponin (Theasaponin), that is, tea saponin. . Tea saponin is a non-ionic surfactant with the properties of emulsifying, dispersing, moisturizing, foaming, and pharmacological effects such as impermeability, anti-inflammatory, analgesia, etc. Function. At present, it has been used in industries such as fiber, paper, plastic, medicine, petroleum, coal, paint, leather and food industry. The representative ...

AI Technical Summary

Problems solved by technology

Its defect is: do the impurity such as sugar, protein, starch that water will appear as solvent, so also must have the technological process of sedimentation separation, separation, pre-filtration, pressure filtration that removes impurity in the step, and energy consumption is high, the obtained tea soap tea saponin, the purity is low, thereby limiting the application of tea saponin

As described in CN1224022A, raw materials are leached with 1-3 carbon monohydric alcohols such as methanol, ethanol, propanol, etc. containing or not containing inorganic acids, alkalis, and salts, and the leaching solution is concentrated and evaporated to dryness, water transfer, monohydric alcohol extraction, and precipitation and drying processes, the method steps are cumbersome, and the reagent consumption is large, and the operation cycle is long

This method consumes a lot of water and energy, and the fermentation process takes 24 to 72 hours. The whole cycle is long, and the utilization of cake is not considered.

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