Gluten powder / calcium carbonate composite material in situ, and preparation method
A technology of in-situ composite material and gluten powder, which is applied in the field of gluten powder/calcium carbonate in-situ composite material and its preparation, can solve the problems that it is difficult to form protein suspension and ensure the uniform dispersion of nanoparticles, and achieve the goal of inhibiting The effect of reunion
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Embodiment 1
[0024] 1) under stirring condition, in the aqueous solution of 100g gluten content 10wt%, ammonia content 10wt%, calcium chloride content 0.218wt%, dripping 3.1g concentration is the ammonium bicarbonate aqueous solution of 5wt%, after dropwise addition finishes React at 30°C for 3 hours, adjust the pH to 6 with concentrated hydrochloric acid, centrifuge, wash the lower slurry with deionized water and centrifuge, repeat 5 times, dry at 50°C for 5 days, freeze-dry at -50°C for 24 hours, and grind to 100 mesh Sieve to get gluten / calcium carbonate in-situ complex;
[0025] 2) Mix 4.3g of glycerin with the gluten powder / calcium carbonate in-situ compound, place it in the GB / T1040-92 plastic tensile property test standard mold, and use a flat vulcanizer to press at 80°C and 5MPa pressure for 30min, Obtain gluten / calcium carbonate in situ composite material.
Embodiment 2~5
[0027] Calcium chloride content is respectively 0.436wt%, 0.654wt%, 0.872wt%, 1.09% in the gluten ammoniacal solution, and the consumption of 5wt% ammonium bicarbonate aqueous solution is respectively 6.2g, 9.3g, 12.4g, 15.5g, the rest Condition is the same as embodiment 1.
Embodiment 5
[0029] 1) under stirring condition, to 15.6g dripping concentration in the aqueous solution of 100g gluten content 10wt%, ammonia content 10wt%, calcium chloride content 2.18wt% is the ammonium bicarbonate aqueous solution of 10wt%, after dropwise addition finishes React at 60°C for 1h, adjust the pH to 7 with concentrated hydrochloric acid, centrifuge, wash the lower slurry with deionized water and centrifuge, repeat 8 times, dry at 50°C for 5 days, freeze-dry at -50°C for 24h, and grind to 100 mesh Sieve to get gluten / calcium carbonate in-situ complex;
[0030] 2) Mix 0.5 g of glycerin with the gluten / calcium carbonate in-situ composite, and heat-press at 140° C. for 10 min to obtain the gluten / calcium carbonate in-situ composite.
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