Preparation method of high quality colla corii asini
A high-quality donkey-hide gelatin technology, applied in the field of preparation of high-quality donkey-hide gelatin, can solve the problems of prolonged gelatinization time, high energy consumption of cold storage, low production efficiency, etc. Effect
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Embodiment 1
[0029] A preparation method of high-quality donkey-hide gelatin, comprising the steps of:
[0030] 1) Soak the donkey skin, then cut it into pieces and wash it; put the washed donkey skin into a steamer, then add water twice the amount of the donkey skin and 0.9% sodium carbonate, and blanch the skin at 80°C. After blanching, wash repeatedly with water until neutral.
[0031] 2) Repeatedly extract the washed donkey skin under the condition of ≤0.18MPa dynamic high pressure, and filter to obtain donkey-hide gelatin glue; first concentrate and foam the donkey-hide gelatin glue, then add rock sugar, soybean oil, and rice wine to mix , to get the donkey-hide gelatin mixed solution; the donkey-hide gelatin mixed solution is cooled to 60 ℃, then carry out homogenization treatment under the condition of 10Mpa; the donkey-hide gelatin mixed solution after the homogenization treatment is carried out the second concentration until the water is concentrated to 30%; then in the dynamic S...
Embodiment 2
[0042] 1) Soak the donkey skin, then cut into pieces and wash; put the washed donkey skin into a steaming ball skin machine, then add 2 times of water and 1.0% sodium carbonate, and blanch the skin at 80°C. Then wash repeatedly to neutrality.
[0043] 2) Repeatedly extract the donkey skin after washing under the condition of ≤0.18MPa dynamic high pressure, and obtain donkey-hide gelatin glue after filtering; Cool the glue solution to 60°C, and then homogenize it under the condition of 15Mpa; concentrate the homogenized donkey-hide gelatin solution for the second time to 35% moisture; then pre-vacuum under dynamic stirring and -0.06Mpa vacuum condition. Cool down to 75°C and concentrate to 25% moisture.
[0044]3) Pour the donkey-hide gelatin solution after vacuum precooling into the plastic box, let it stand at room temperature for 24 hours, and then transfer it to a cold storage at 25°C; cool down the temperature of the cold storage at a cooling rate of 10°C / h to 0°C; the c...
Embodiment 3
[0046] 1) Soak the donkey skin, then cut it into pieces and wash it; put the washed donkey skin into a steamer, then add water twice the amount of the donkey skin and 1.0% sodium carbonate, and blanch the skin at 90°C. After blanching, wash repeatedly with water until neutral.
[0047] 2) Repeatedly extract the washed donkey skin under the condition of ≤0.18MPa dynamic high pressure, and filter to obtain donkey-hide gelatin glue; after the first concentration and foaming of the donkey-hide gelatin glue, add rock sugar, soybean oil, and rice wine to mix , to obtain a donkey-hide gelatin mixture; the donkey-hide gelatin mixture is cooled to 60°C, and then homogenized under the condition of 15Mpa; the homogenized donkey-hide gelatin glue is concentrated for the second time until the water is concentrated to 30%; And -0.08Mpa vacuum pre-cooling to 70 ° C, and concentrated to 25% moisture to obtain the donkey-hide gelatin intermediate;
[0048] 3) Pour the donkey-hide gelatin inte...
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