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Chitin crushing method

A chitin and purpose technology, which is applied in the field of chitin crushing, can solve the problems of complex processing technology, large solvent, and inability to achieve energy conservation and environmental protection, and achieve the effects of optimizing the process flow, improving solubility performance, and saving mechanical energy consumption

Inactive Publication Date: 2014-10-29
SOUTH CHINA AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this preparation method is relatively complex in processing technology, consumes a large amount of solvent, and cannot achieve the effect of energy saving and environmental protection.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] The crushing of embodiment 1 shrimp shell

[0049] S1. Material selection and packaging: choose untreated shrimp shells as raw materials, with a water content of 70%, put them into PVC packaging bags, and vacuum-pack them at -0.085MPa, with a thickness of 10mm;

[0050] S2. Low-temperature quick-freezing: super-fast-freeze the vacuum-packed chitin in a liquid immersion quick-freezing equipment, the quick-freezing temperature is -30°C, and the quick-freezing time is 10 minutes;

[0051] S3. Low-temperature storage: store the quick-frozen chitin at -18°C for 1 month;

[0052] S4. Frozen crushing: after the quick-frozen chitin is unpacked and taken out, it is crushed with a universal grinder in a frozen state, and the crushing time is 5 seconds;

[0053] S5. Low-temperature vacuum drying: the pulverized chitin is vacuum-dried at a low temperature at a pressure of -0.096MPa and a temperature of 60°C; through a 200-mesh sieve, the sieving rate of the obtained chitin reache...

Embodiment 2

[0054] Embodiment 2 Pulverization of crab shells

[0055] S1. Material selection and packaging: choose untreated crab shells as raw materials, with a water content of 50%, put them into PVC packaging bags-0.095MPa vacuum packaging, and the packaging thickness is 15mm;

[0056] S2. Low-temperature quick-freezing: ultra-fast freezing the vacuum-packed chitin in a liquid immersion quick-freezing equipment, the quick-freezing temperature is -35°C, and the quick-freezing time is 5 minutes;

[0057] S3. Low-temperature storage: store the quick-frozen chitin at -18°C for 6 months;

[0058] S4. Frozen pulverization: after the quick-frozen chitin is unpacked and taken out, it is pulverized with a low-temperature ultrafine pulverizer in a frozen state, and the pulverization time is 3 seconds;

[0059] S5. Low-temperature vacuum drying: the pulverized chitin is dried in a low-temperature vacuum at a pressure of -0.056MPa and a temperature of 40°C; through a 200-mesh sieve, the sieving...

Embodiment 3

[0060] Embodiment 3 Pulverization of shrimp chitin

[0061] S1. Material selection and packaging: select undried shrimp chitin after removing protein and minerals, with a water content of 30%, put it into a PVC packaging bag, and vacuumize the package at -0.085MPa, and the packaging thickness is 15mm;

[0062] S2. Low-temperature quick-freezing: super-fast-freeze the vacuum-packed chitin in a liquid immersion quick-freezing equipment, the quick-freezing temperature is -35°C, and the quick-freezing time is 8 minutes;

[0063] S3. Frozen crushing: Immediately unpack the quick-frozen chitin, take it out and crush it in a frozen state with a universal grinder for 5 seconds;

[0064] S4. Low-temperature vacuum drying: the pulverized chitin is vacuum-dried at a low temperature at a pressure of -0.04MPa and a temperature of 50°C, passed through a 200-mesh sieve, and the sieve rate of the obtained chitin is 96%.

[0065] The chitin obtained in the above-mentioned Examples 1-3 is in...

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Abstract

The invention belongs to the technical field of crushing, in particular discloses a chitin crushing method. The overspeed refrigeration is performed for selected chitin packaged in vacuum; the temperature of the overspeed refrigeration is in a range of -35 DEG C to -30 DEG C, and the time of the overspeed refrigeration is 5-10 min; and the chitin after the overspeed refrigeration can be crushed after being stored at the low temperature below -18 DEG C, or can be directly taken out from the package to be crushed in a frozen state. The method shortens the crushing time, enables crushed particles to achieve a powder state, cancels a procedure that in the prior art, crushed raw materials need to be dried before storage, optimizes the process flow, saves the energy consumption, and achieves high efficiency and speediness. Through the analysis and the test, the morphology, molecular structure, crystal structure and thermal property of the chitin are not obviously changed due to the low-temperature condition and mechanical effect of the crushing after and before the overspeed crushing; the dissolving property is prominently improved; and the application range is widened.

Description

technical field [0001] The invention belongs to the technical field of crushing processing, and more specifically relates to a chitin crushing method. Background technique [0002] Chitin, also known as chitin, chitin, and chitin, has a molecular formula of (C 8 h 13 NO 5 )n, is a two-dimensional compound formed by linking 2-acetylamino-2-deoxy-D-glucopyranose and 2-amino-2-deoxy-D-glucopyranose with β-1,4 glycosidic bonds A linear polymer is a linear aminopolysaccharide that can maintain and protect the bodies of crustaceans and microorganisms. [0003] At present, chitin has been considered as the only edible cationic animal fiber in the world, and it is also the "sixth life element" after protein, sugar, fat, vitamins and minerals. At the same time, chitin has various pharmacological effects such as antibacterial, anti-infection, anti-virus, lowering blood sugar, regulating immunity, resisting tumors and radiation, and its medical function and drug effect have become ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B02C19/00
Inventor 杨公明吴丽王皓朱小花侯银臣江东文
Owner SOUTH CHINA AGRI UNIV
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