Extraction system and extraction process for stevioside

Abstract

The invention discloses an extraction system for stevioside. The system comprises a preparation tank, an extraction tank, a centrifuge, an adsorption column, a syrup preparation tank, a syrup storagetank, a decolorizing column, a colorless syrup storage tank, a membrane machine and a spray drying tower arranged in sequence, the preparation tank communicates with the extraction tank through a high-level tank, and the adsorption column communicates with the preparation tank. The invention also discloses an extraction system for the stevioside. The extraction process comprises the following paths: performing soaking in a hydrogen peroxide solution, performing centrifugal separation, performing resin adsorption, washing the column, performing desorption, performing decolorization, performingconcentration, and performing spray drying. The system and process provided by the invention effectively inhibit growth of bacteria, realize full recovery of soaking water, and greatly reduce the discharge and production costs of wastewater in the extraction process of stevia rebaudiana.

Description

technical field [0001] The invention relates to the technical field of natural product extraction, and more specifically relates to an extraction system and extraction process of steviol glycosides. Background technique [0002] Steviol glycoside is a kind of natural product with high sweetness, low calorie and no side effects on the human body extracted from the dry leaves of the natural Compositae plant Stevia rebaudiana. It also has certain effects on obesity, diabetes, hypertension, heart disease, dental caries, etc. adjuvant therapy. Steviol glycoside is a natural low-calorie sweetener approved by the Ministry of Health and the Ministry of Light Industry of my country that is closest to the taste of sucrose. Known as "the third sugar source in the world". [0003] As people pay more and more attention to health, steviol glycoside, as a functional sugar, has a good market prospect. The traditional production process of steviol glycosides mainly adopts the route of soak...

AI Technical Summary

Problems solved by technology

The traditional production process of steviol glycosides mainly adopts the route of soaking in water→ferrous sulfate + calcium hydroxide flocculation→press filtration→clean liquid desalination→decolorization→adsorption→column washing→analysis→refining→concentration→spray drying, but the traditional No antibacterial solvent is added to the process water, which is easy to deteriorate during the production process and cannot be recycled. The amount of waste water is large, and the sugar content loss during the flocculation and desalination process is high, resulting in a decrease in the yield of steviol glycosides and high production costs.

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