Production technology of high-purity stevioside

Abstract

The invention relates to a production technology of high-purity stevioside. The technology is characterized in comprising the steps of: an extraction step, a flocculation step, a membrane filtration step, an adsorptive separation step, a reverse osmosis concentration step, a desalting and de-coloring step, and a recrystallization step. The technology provided by the invention has advantages that: the stevioside is a completely safe foodstuff additive with no toxicity, no side effect, no teratogenic effect, no mutagenic effect, no carcinogenic effect, refreshing taste, good taste, high purity, and high sweetness. Therefore, requirements of people can be satisfied. During a production process of stevioside, no chemical method or chemical raw material is adopted, and no pollutant is discharged. A small amount of waste residual can be comprehensively used as a bio-fertilizer. Stevia leaf is a good organic fertilizer rich in organics, and can be used for improving and fertilizing soil. Therefore, a waste pollution problem is solved from the source.

Description

technical field [0001] The invention relates to a production process of high-purity stevioside. Background technique [0002] Today, as people pay more and more attention to healthy diet, a series of rich and noble diseases such as obesity and diabetes are constantly eroding human health. So far, the research on the stevia project has mainly focused on the breeding of stevia leaves, the decolorization and impurity removal of glycosides, and the recrystallization. At present, the highest glycoside content in the national industrialized production can reach 85-90%, but the overall The level is not optimistic. The content of glucosides below 80% still accounts for a certain proportion compared with those with high absorbance. Generally, the degree of automation of stevioside processing enterprises is not high enough, the refining efficiency is low, and some glycosides with very low content cannot be separated, resulting in poor taste , and the color is yellowish, and the phenomen...

AI Technical Summary

Problems solved by technology

[0002] Today, as people pay more and more attention to healthy diet, a series of rich and noble diseases such as obesity and diabetes are constantly eroding human health. So far, the research on the stevia project has mainly focused on the breeding of stevia leaves, the decolorization and impurity removal of glycosides, and the recrystallization. At present, the highest glycoside content in the national industrialized production can reach 85-90%, but the overall The level is not optimistic. The content of glucosides below 80% still accounts for a certain proportion compared with those with high absorbance. Generally, the degree of automation of stevioside processing enterprises is not high enough, the refining efficiency is low, and some glycosides with very low content cannot be separated, resulting in poor taste , and the color is yellowish, and the phenomenon of low added value has hindered the further development of my country's stevioside industry. In order to solve the above problems, a new technical solution is provided.