A method for preparing hydrogel by modifying tea residue and application of the hydrogel

Abstract

The invention provides a method for preparing hydrogel by modifying tea grounds, and applications of the hydrogel. The method mainly comprises the preparation steps of: grouping fresh and green tea branches and leaves, fixing, drying and crushing, extracting water-soluble components, filtering and drying, degreasing, decolorizing to obtain green tea grounds for later use; extracting water-insoluble dietary fiber from the green tea grounds by adopting an alkaline chemical method, and pickling to obtain different tendernesses of tea ground cellulose; modifying the tea ground cellulose by using ionic liquid AMIMC1 to prepare different tendernesses of tea ground cellulose hydrogel. The prepared tea ground cellulose hydrogel not only changes tea grounds into valuables, but also can protect the environment; in the preparation process, the best tenderness for performing high-value utilization to the tea grounds can be realized by comparing and discussing the characteristics and applicability of the hydrogel prepared by the different tendernesses of tea ground cellulose. In addition, the applications of the prepared tea ground cellulose hydrogel is primarily discussed, the hydrogel can be used as a medicament release carrier, and provide an entry point for the high-value and deep processing utilization of the tea grounds.

Description

technical field [0001] The invention relates to natural cellulose hydrogel, specifically a preparation method and application of hydrogel with tea residue as the main raw material, which belongs to environmental protection, high-value deep processing and utilization of agricultural products and natural polymer modification technology. Background technique [0002] In the past ten years, my country's tea industry has developed rapidly. In 2009, the planting area of ​​China's tea gardens reached 1.8 million hectares, accounting for about 45% of the world's total, and the tea output was 1.358 million tons, accounting for about 1 / 3 of the world's total. my country's planting area and tea production rank first in the world. At the same time, my country's tea beverage, tea polyphenols, instant tea and other industries have developed rapidly. Among them, tea beverage has become the third largest beverage, second only to water and carbonated beverages. Whether it is tea beverage, i...

AI Technical Summary

Problems solved by technology

These tea beverage and instant tea manufacturers produce as much as 160 million kilograms of tea dregs every year. If these discarded tea dregs are treated as garbage, it will not only waste the potential resources contained in them, but also easily cause environmental pollution.