Flocculant formula used for stevioside extracting solution and use method thereof

Abstract

The invention relates to a flocculant formula used for a stevioside extracting solution and a use method thereof. The flocculant formula comprises a flocculant A and a flocculant B, wherein the raw material of the flocculant A is polyacrylamide; the weight volume ratio of the added polyacrylamide to the stevioside extracting solution is 1 / 100000-3 / 100000; the raw material of the flocculant B is ferrous sulfate; the weight volume ratio of the added ferrous sulfate to the stevioside extracting solution is 1 / 100-3 / 100; when the flocculant A and the flocculant B are used, the flocculants are firstly diluted with water according to the addition amount; the concentration of the diluted flocculant A is 0.1-0.15%; and the flocculant B is dissolved and diluted into a saturated solution with the concentration of 30-50%. The flocculant formula and the use method have the following beneficial effects: fewer flocculants are used; the method is simple and easy to operate; the cost is saved; and theflocculation effect is good.

Description

technical field [0001] The invention relates to the technical field of flocculation for stevioside extraction, in particular to a flocculant formula and use method for stevia sugar extraction liquid. Background technique [0002] Flocculation is one of the important processes of stevia sugar extraction, which can remove macromolecular impurities during the stevia sugar extraction process and improve the purity of stevia sugar. [0003] The existing flocculants for stevia at home and abroad are all inorganic salts, the most commonly used is FeSO 4 、FeCl ２ , Fe 2 (SO 4 ) 3 , FeCl 3 , AlK(SO 4 ) 2 12H 2 O, etc., this kind of inorganic salt flocculant cannot completely precipitate the small molecular pectin substances in the stevia extract, which affects the purity of stevia sugar, and also affects the adsorption capacity and regeneration capacity of the adsorption resin. This kind of flocculant Precipitation with lime water increases the load on the desalination resin ...

AI Technical Summary

Problems solved by technology

[0003] The existing flocculants for stevia at home and abroad are all inorganic salts, the most commonly used is FeSO 4 、FeCl ２ , Fe 2 (SO 4 ) 3 , FeCl 3 , AlK(SO 4 ) 2 12H 2 O, etc., this kind of inorganic salt flocculant cannot completely precipitate the small molecular pectin substances in the stevia extract, which affects the purity of stevia sugar, and also affects the adsorption capacity and regeneration capacity of the adsorption resin. This kind of flocculant Precipitation with lime water increases the load on the desalination resin and increases production costs