Process technique for extracting tea polyphenol from tree plant flower

Abstract

A process technology extracting the tea polyphenols from the tea plant flowers is provided, which relates to the preparation technology of the separation and purification of the tea polyphenols. The process technology comprises the following steps: 1) drying the tea tree pollen; 2) producing the extracting solution by ultrasonic wave; 3) producing ultrafiltration treatment filter liquor after extraction, condensation, microfiltration and ultrafiltration; 4) gaining polyphenols extracting solution through absorption by medium polarity adsorbent resins; 5) producing the extracting solution to the extract and producing the extract to the polyphenol fine powder of the tea plant flowers. Compared with the method using the current tea to prepare tea polyphenols, the invention has the following advantages that aiming at the characteristics of abundant content of the polyphenols of the tea plant flowers, little pigment impurity and good stability, the invention carries out the comprehensive development and use to change waste into valuable, replaces the tea leaves to extract the natural tea polyphenols and provides raw materials and additives with high quality for the industries such as medicine, food and cosmetic. The invention improves the utilization rate of the tea plant flowers resources and is suitable for the scale production, reduces the energy consumption and production cost and enhances the competitiveness of the production.

Description

technical field [0001] The invention relates to a preparation process for the separation and purification of tea tree flowers and tea polyphenols, which belongs to the field of natural organic chemistry and the field of deep processing of agricultural products, and in particular to a preparation process for the separation and purification of target components by the combination of ultrasonic wave-ultrafiltration-macroporous adsorption resin . Background technique [0002] Tea tree flowers contain a variety of natural components similar to fresh tea leaves, such as tea polyphenols, proteins, polysaccharides, etc. Among them, tea polyphenols, mainly catechins, have the functions of eliminating free radicals in the human body and improving immunity, anti-oxidation and anti-aging , anti-radiation, lowering blood fat, weight loss and other effects, has been widely used in medicine, health care products, cosmetics and food industries, is a safe and natural active substance, the ap...

AI Technical Summary

Problems solved by technology

The solvent extraction method uses chloroform to extract the filtrate to remove pigment and caffeine; the precipitation method uses heavy metal ions to precipitate tea polyphenols in the filtrate to separate them from pigments and caffeine. These two methods may cause organic solvents or Heavy metal residues, and the purity of the prepared tea polyphenols is not high

The method of separating and extracting catechins from crude tea polyphenols has supercritical CO 2 Extraction method, the product purity of this method is high, but the process is complicated, the separation component is single, the operation is inconvenient, and the cost is high; liquid phase preparative chromatography and countercurrent chromatography, the prepared tea polyphenol monomer isolate has high purity and good recovery effect , but the investment cost is high, and the production capacity is "gram level", it is difficult to expand the scale