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Preparation method of donkey-hide gelatin

A technology of donkey-hide gelatin and physical methods, applied in food science and other directions, can solve the problems of poor color, light transmittance and brittleness of donkey-hide gelatin products, high equipment requirements, and no mention of cryopreservation of fresh donkey skins, so as to avoid the risk of soaking and deterioration. , The effect of reducing atmospheric pollution and ensuring the source of collagen

Pending Publication Date: 2020-12-29
高永坡
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Chinese patent application No. 201611110466.2 discloses a treatment method for donkey-hide gelatin raw material donkey skin. The method adopts steam heating to heat fresh donkey skin, and adopts air-drying and drying after plucking and pinching for storage; Chinese patent application No. 201310533468.2 discloses a fast A method for producing donkey-hide gelatin, which uses fresh donkey skin as a raw material for processing, but does not mention the preservation method of raw material fresh donkey skin, and does not mention the frozen preservation of fresh donkey skin
The color and light transmittance of donkey-hide gelatin are important indicators to reflect the sensory quality of the product. Chinese patent application number 201710772478. Obtained by centrifugation, which requires high equipment, and in the process of step-by-step filtration, the nutrients and components with good texture in donkey-hide gelatin will also be partially retained, which will eventually affect the quality of donkey-hide gelatin
[0005] At present, the production of donkey-hide gelatin is mainly mechanized and automated, such as depilatory cream, steamed balls, peeling machine, centrifuge to separate insoluble matter, etc. The production cycle is short, but the color, light transmittance and brittleness of the donkey-hide gelatin products obtained Relatively poor, the traditional production equipment is simple and easy to operate, but the production cycle of the donkey-hide gelatin obtained is long, and the quality of light transmission is also average. The gloss and light transmission of different batches of donkey-hide gelatin produced by the traditional method are quite different

Method used

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  • Preparation method of donkey-hide gelatin
  • Preparation method of donkey-hide gelatin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] 1) After the live donkey is slaughtered, the complete fresh donkey skin including the head, ears, feet and tail is obtained, and washed with water until the water is clear;

[0048] 2) Put the donkey hide obtained in step 1) at room temperature for 24 hours, soak it in water at 62°C for 6 minutes, scrape off the hair and attached meat on the donkey hide with a scraper or hair removal machine, etc. The donkey skin shall not be damaged, and the hair removal rate of the donkey skin is 98-99%;

[0049] 3) the donkey skin obtained in step 2) is further cleaned, and the remaining attached hair and minced meat are removed;

[0050] 4) The donkey skin obtained in step 3) was frozen and stored at -18°C until use;

[0051] 5) During production, place the donkey skin obtained in step 4) in a thawing tank, add water, and thaw at normal temperature until the donkey skin is thawed completely;

[0052] 6) cutting step 5) gained donkey hide into irregular fritters whose side length i...

Embodiment 2

[0063] The difference from Example 1 is that step 10) of Example 1 is replaced by: after combining the 3 glue juices obtained in step 9), transfer them to a jacketed pot, after boiling on high heat, turn to low heat and continue to concentrate. When the water content of the glue is 55%, add an appropriate amount of ice water at 0-4°C, boil on high heat, turn to low heat and concentrate until the water content of the glue is 55%, then add an appropriate amount of ice water at 0-4°C, boil again, concentrate, Repeat this 9 times, after nine extractions and nine refinements, hot and cold stimulation, foaming during the period, the glue is further purified;

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Abstract

The invention relates to a preparation method of donkey-hide gelatin, which is improved on the basis of the traditional manual process, retains the traditional advantages, creatively combines the keytechnical means of 'donkey hide cryopreservation' with 'nine extraction and nine refining, cold and hot stimulation', and controls the process to obtain a donkey-hide gelatin product with obviously improved sensory quality such as color, permeability, crispness and the like. The whole preparation process is free of any chemical additives and environmental pollution, and the pretreated complete donkey hide adopts a freezing technology in the storage process, so that the links of airing and soaking the donkey hide are omitted, the risk that the donkey hide goes bad due to long-time soaking is avoided, the production period is greatly shortened, and meanwhile, the influence of salting the donkey hide on the quality of donkey-hide gelatin products is also avoided. The freezing technology is used to guarantee the freshness of donkey hide, and ice crystals pierce the donkey hide cells to a certain extent during the thawing process, which has a beneficial effects on subsequent refining, and unexpected technical effects are achieved by combining with the key technology of 'nine extraction and nine refining, cold and hot stimulation'.

Description

technical field [0001] The invention relates to a preparation method of donkey-hide gelatin, which belongs to the technical field of donkey-hide gelatin production. Background technique [0002] Ejiao was first recorded in "Shen Nong's Materia Medica", and has a history of more than 2,000 years. Ejiao has the effects of nourishing blood, nourishing yin, moistening dryness, and stopping bleeding. Admired by physicians of all ages. Donkey skin is the main raw material of donkey-hide gelatin, and the quality of donkey-hide is related to the quality of donkey-hide gelatin. At present, donkey hides are generally preserved by natural drying or salting. The natural drying time is long, and the dried donkey skin is not easy to soften, which wastes labor and space. More, and the salt will cause changes in the chemical structure of donkey skin, and it is easy to cause environmental pollution. [0003] Food is the first priority for the people, and food safety is the first priority....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23L33/00A23L5/20
CPCA23L33/00A23L5/20
Inventor 高永坡
Owner 高永坡