Method for extracting tea saponin from camellia seed meal

Abstract

The invention relates to a method for extracting tea saponin from camellia seed meal, comprising the following steps of: crushing camellia seed meal into powder with the particle size of 100-200 meshes, packaging into cloth bags and sealing the openings; putting the cloth bags with the camellia seed meal into a batch extractor which is provided with a filter screen at the position of a conical opening of a conical tank bottom and connected with a condenser; injecting hydrous ethanol into the batch extractor according to the mass ratio of the camellia seed meal powder to the ethanol of 1:8-10, raising the temperature to 80-90 DEG C to enable the ethanol to back flow, extracting tea saponin in the states of stirring and ethanol reflux for 3-4h to obtain a tea saponin extract; pumping the extract out from the batch extractor, injecting into a concentration tank and carrying out the triple-effect concentration to obtain tea saponin rough products with the tea saponin yield of about 20 percent. With the method, the problem of plugging in the procedure of separating the tea saponin extract can be solved; and the method can improve the yield of the tea saponin, save the filter procedure and simplify the process.

Description

Technical field: [0001] The invention relates to a technology for preparing tea saponin, in particular to a technology for extracting crude tea saponin from camellia oleifera seed dregs. technical background: [0002] Tea saponin is widely used in daily chemical industry, agricultural protection, breeding industry, building materials industry, food industry and medicine. [0003] In the prior art, extracting camellia oleifera seed meal with a polar solvent is a common method for extracting tea saponin. The process flow is as follows: soak the pulverized tea meal in a leaching tank with a water-containing polar solvent to extract tea saponin→ Separating the tea saponin extract from the tea dregs → filtering the tea saponin extract → concentrating → obtaining a crude tea saponin product. In the above process, the tea meal raw material is generally crushed to particles with a particle size larger than 100 mesh. In the above step of separating the tea saponin extract, the tea ...

AI Technical Summary

Problems solved by technology

In the above step of separating the tea saponin extract, the tea saponin extract is generally extracted from the bottom of the leaching tank. Since the extract is mixed with the tea dregs particles, a considerable part of the tea dregs particles Along with the tea saponin leaching solution flows into the next filtration step, the workload of the next filtration step is increased, and the tea dregs particles often cause the outlet to be blocked, making it difficult to separate the tea saponin leaching solution

The finer the tea meal raw material is crushed, the easier it is for the tea meal residue particles to flow into the next filter step and cause blockage. In order to reduce or avoid the above situation, the tea meal raw material is generally crushed to a particle size of about 3cm, but the tea meal The increase of the particle size of the raw material will reduce the leaching rate of tea saponin in the solvent