Extraction method and application of grub protein
An extraction method, grub technology, applied in the direction of peptide preparation method, application, chemical instrument and method, etc., can solve problems such as undiscovered, achieve the effects of reducing deterioration loss, improving protein quality and content, and increasing protein extraction rate
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Embodiment 1
[0027] A method for extracting protein from grubs, comprising the steps of:
[0028] (1) Wash fresh grubs, add distilled water to grind and crush, the mass-to-volume ratio of clean grubs to distilled water is 1:15, and grub slurry is obtained;
[0029] (2) Get the grub slurry of step (1), add the pepsin whose enzyme activity is 55,000 U / g, and the addition amount is 1.5wt% of the grub slurry of step (1), stir evenly, adjust the pH to 2.5, and Carry out enzymatic hydrolysis at 40°C for 45 minutes;
[0030] (3) After the enzymolysis solution in step (2) is subjected to enzyme-inactivating treatment, adjust the pH to 7.5, add trypsin with an enzyme activity of 2500U / g and an addition amount of 1.5wt% of the grub slurry in step (1), and stir Evenly, adjust the pH to 7.5, and carry out enzymatic hydrolysis at 40°C for 45 minutes;
[0031] (4) The enzymolysis solution in step (3) is subjected to an enzyme-inactivating treatment, and then placed in a refrigerator for overnight stor...
Embodiment 2
[0034] A method for extracting protein from grubs, comprising the steps of:
[0035] (1) Wash fresh grubs, add distilled water to grind and crush, the mass volume ratio of clean grubs to distilled water is 1:20, and grub slurry is obtained;
[0036] (2) Get the grub slurry of step (1), add the pepsin whose enzyme activity is 60,000 U / g, and the addition amount is 2wt% of the grub slurry of step (1), stir evenly, adjust the pH to 3.0, at 50 Carry out enzymatic hydrolysis at ℃ for 30 minutes;
[0037] (3) After the enzymolysis solution in step (2) is subjected to enzyme-inactivating treatment, adjust the pH to 7.0, add trypsin with an enzyme activity of 2000U / g and an addition amount of 1wt% of the grub slurry in step (1), and stir evenly , adjust the pH to 7.0, and carry out enzymatic hydrolysis at 30°C for 60 minutes;
[0038] (4) The enzymolysis solution in step (3) is subjected to an enzyme-inactivating treatment, and then placed in a refrigerator for overnight storage, th...
Embodiment 3
[0041] A method for extracting protein from grubs, comprising the steps of:
[0042] (1) Wash fresh grubs, add distilled water to grind and crush, the mass volume ratio of clean grubs to distilled water is 1:10, and grub slurry is obtained;
[0043] (2) Get the grub slurry of step (1), add enzyme activity and be 50,000 U / g, add the pepsin that is 1wt% of step (1) grub slurry, stir, adjust pH to 2.0, at 30 Carry out enzymatic hydrolysis at ℃ for 60 minutes;
[0044] (3) After the enzymolysis solution in step (2) is subjected to enzyme-inactivating treatment, adjust the pH to 8.0, add trypsin with an enzyme activity of 3000U / g and an addition amount of 2wt% of the grub slurry in step (1), and stir evenly , adjust the pH to 8.0, and carry out enzymatic hydrolysis at 50°C for 30 minutes;
[0045] (4) The enzymolysis solution in step (3) is subjected to an enzyme-inactivating treatment, and then placed in a refrigerator for overnight storage, the enzymolysis solution is filtered,...
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