Extracting method of diplopod chitosan and application of diplopod chitosan
An extraction method, chitosan technology, applied in application, animal feed, additional food elements, etc., can solve the problems of insufficient extraction effect and quality, less extraction of millipede chitosan, etc., and achieve narrow molecular weight distribution range, environmentally friendly process, Relatively high effect
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Embodiment 1
[0024] A method for extracting chitosan from millipede, comprising the steps of:
[0025] (1) Clean the millet, then scald it to death with hot water at 68°C, remove the contents, dry it, crush it through a 70-mesh sieve, and obtain dry millet powder;
[0026] (2) Take the millipede dry powder of step (1), add 5% HCl with a mass volume ratio of 12, soak it at a constant temperature at 43°C for 22 hours, and stir intermittently until no bubbles are generated, and wash the raw material with suction and water until it is neutral. Air-dried at ℃ to get pretreated dry millet powder;
[0027] (3) Take the pretreated millipede dry powder of step (2), add 8% NaOH solution with a mass volume ratio of 9%, extract at a constant temperature at 90°C, and stir intermittently to remove the protein in the millipede bark, wash with water until neutral, and Dried at 75°C to obtain dried chitin;
[0028] (4) Pulverize the chitin in step (3) through a 50-mesh sieve, add distilled water accordin...
Embodiment 2
[0030] A method for extracting chitosan from millipede, comprising the steps of:
[0031] (1) Clean the millet, then scald it to death with hot water at 70°C, remove the contents, dry, crush and pass through an 80-mesh sieve to obtain dry millet powder;
[0032] (2) Take the millipede dry powder of step (1), add 5% HCl with a mass volume ratio of 15, soak at a constant temperature at 45°C for 24 hours, and stir intermittently until no bubbles are generated, and the raw materials are filtered and washed until neutral, and then heated at 80°C. Air-dried at ℃ to get pretreated dry millet powder;
[0033] (3) Take the pretreated millipede dry powder of step (2), add 10% NaOH solution with a mass volume ratio of 10%, extract at a constant temperature at 100°C, and stir intermittently to remove the protein in the millipede bark, wash with water until neutral, and Dried at 85°C to obtain dried chitin;
[0034] (4) Pulverize the chitin in step (3) through a 60-mesh sieve, add distil...
Embodiment 3
[0036] A method for extracting chitosan from millipede, comprising the steps of:
[0037] (1) Clean the millet, then scald it to death with hot water at 65°C, remove the contents, dry, crush and pass through a 60-mesh sieve to obtain dry millet powder;
[0038] (2) Take the millipede dry powder of step (1), add 5% HCl with a mass volume ratio of 10, soak at a constant temperature at 40°C for 20h, and stir intermittently until no bubbles are generated, and the raw materials are filtered and washed until neutral, and then heated at 60°C. Air-dried at ℃ to get pretreated dry millet powder;
[0039] (3) Take the pretreated millipede dry powder of step (2), add 6% NaOH solution with a mass volume ratio of 8%, extract at a constant temperature at 80° C., and stir intermittently to remove the protein in the millipede bark, wash with water until neutral, and Dried at 60°C to obtain dried chitin;
[0040] (4) Pulverize the chitin in step (3) through a 40-mesh sieve, add distilled wat...
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