Preparation method of starch based zinc-supplementing
A nutritional enhancer, starch-based technology, applied in the field of preparation of starch-based zinc supplement nutritional enhancer, can solve the problems of unfavorable industrial production of starch metal complex nutritional supplements, low metal ion content, low reaction efficiency, etc., to achieve High production efficiency, high product quality, and improved reaction efficiency
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Embodiment 1
[0019] A preparation method of a starch-based zinc supplement nutritional fortifier, comprising the steps of:
[0020] The first step uses acetic acid-sodium acetate buffer to adjust the potato starch milk mass concentration to 15%, the pH value is 4.5, and the temperature is 30°C, adding α-amylase (BAN 480L, Novozymes (China) Investment Co., Ltd.) and Glucoamylase (Dextrozyme DXW, Novozymes (China) Investment Co., Ltd.); add 400u of α-amylase and 30u of glucoamylase per gram of dry starch, react for 4 hours, and neutralize with 0.1mol / L sodium hydroxide solution pH to 6.2, washed, dried at 50°C to a water content of 12%, and crushed to obtain enzymatic starch.
[0021] The second step is to adjust the mass concentration of the enzymatic starch to 82% with water, seal it in a container, react at 100°C for 20 minutes, cool to room temperature, dry at 45°C until the moisture content is 14%, and grind to obtain the wet heat treated starch.
[0022] In the third step, the wet-hea...
Embodiment 2
[0026] A preparation method of a starch-based zinc supplement nutritional fortifier, comprising the steps of:
[0027] The first step uses acetic acid-sodium acetate buffer to adjust the mass concentration of cassava starch milk to 40%, the pH value is 6.5, and the temperature is 55 ° C. Add α-amylase (BAN 480L, Novozymes (China) Investment Co., Ltd.), Add 600 u of α-amylase per gram of dry starch, react for 12 hours, neutralize with 0.1 mol / L hydrochloric acid to pH 6.0, wash, dry at 40°C to a moisture content of 14%, and pulverize to obtain enzymatic starch.
[0028] The second step is to adjust the mass concentration of the enzymatic starch to 75% with water, seal it in a container, react at 90°C for 10 minutes, cool to room temperature, dry at 50°C until the moisture content is 13%, and grind to obtain the wet heat treated starch.
[0029] The 3rd step is made into the starch milk that the mass percentage is 25% with the starch of wet heat treatment with zinc acetate solut...
Embodiment 3
[0032] A preparation method of a starch-based zinc supplement nutritional fortifier, comprising the steps of:
[0033] The first step uses acetic acid-sodium acetate buffer to adjust the mass concentration of cornstarch milk to 30%, the pH value is 4.0, and the temperature is 50°C. Add α-amylase (BAN 480L, Novozymes (China) Investment Co., Ltd.), Add 450u of α-amylase per gram of dry starch, react for 8 hours, inactivate the enzyme, adjust the pH value to 6.0 with 0.1mol / L sodium hydroxide solution, and add glucoamylase (Dextrozyme DXW, Novozymes (China) Investment Co., Ltd.), add 30u of glucoamylase per gram of dry starch, react for 30 hours, neutralize to pH to 6.5 with 0.1mol / L sodium hydroxide solution, wash, and dry at 45°C until the moisture content is 13 %, to obtain enzymatic starch after pulverization.
[0034] The second step is to adjust the mass concentration of the enzymatic starch to 70% with water, seal it in a container, react at 100°C for 15 minutes, cool to ...
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