Production method of water soluble sericin
A technology of sericin and its manufacturing method, which is applied in the field of water-soluble sericin, can solve the problems of low recovery efficiency, high recovery cost, complicated preparation process, etc., achieve high-efficiency recovery, reduce production cost, and improve efficiency
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Embodiment 1
[0020] Weigh raw materials such as cocoon shells, cocoon clothes, waste silk, etc., first rinse in warm water or in weakly alkaline aqueous solution to remove impurities and dust, then add 20 times the amount (V / W) of pure water or use NaOH to adjust the pH to 7~ 8 Immerse in an aqueous solution to make the cocoon or cocoon shell fully swell, then place it in a high-temperature and high-pressure container, and treat it at a temperature of 120°C (0.1MPa pressure) for 1 hour, take out the degummed silk after cooling, and rinse it repeatedly with water. The washing liquid and the degumming liquid are combined to obtain an insoluble sericin solution.
[0021] Adjust the above-mentioned insoluble sericin solution with NaOH, and the pH values are pH=10.0, pH=11.0 and pH=12.0 respectively; or directly spray and dry the above-mentioned degummed sericin solution to make insoluble sericin powder, and make the sericin The powder was first dissolved in hot water, and then adjusted to pH...
Embodiment 2
[0026] Weigh 1Kg of raw materials such as cocoon shells, cocoon clothing, waste silk, etc., first rinse in warm water or in weakly alkaline aqueous solution to remove impurities and dust, and then add 20 times the amount (V / W) of pure water for immersion to make the cocoon clothing Or after the cocoon shell is fully swollen, put it in a high-temperature and high-pressure container, and treat it at a temperature of 120°C (0.1MPa pressure) for 1 hour. After cooling, take out the degummed silk, rinse it repeatedly with water, and combine the washing liquid with the degumming liquid. An insoluble sericin solution was prepared.
[0027] Use NaOH to adjust the pH of the obtained insoluble sericin solution to 11.0; or directly spray-dry the obtained insoluble sericin solution to make insoluble sericin powder, and dissolve the sericin powder with hot water first, and then Adjust to pH 11.0 with NaOH. Next, the insoluble sericin solution after adjusting the pH value above was divided ...
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