A method for preparing tuna skin gelatin

A technology of tuna and skin gelatin, which is applied in the field of comprehensive utilization of fish resources, can solve the problems of reducing use and import, and achieves the effects of energy saving, high-quality gelatin, and scientific and reasonable technology

Inactive Publication Date: 2013-09-11
BEIHAI GOFAR MARINE BIOLOGICAL IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in recent years, due to the spread of various infectious diseases such as mad cow disease and foot-and-mouth disease carried by cattle, pigs and other animals, many countries have reduced or banned the production, use and import of gelatin from cattle and pigs; in addition, Muslim consumers Rejection and refusal to use gelatin produced from pig skin or bone and pharmaceutical products and food made from pig gelatin due to religious beliefs

Method used

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Examples

Experimental program
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Effect test

Embodiment Construction

[0020] The present invention is further described in conjunction with implementation process example:

[0021] (1) After the tuna skin is thawed and cleaned to remove impurities, it is vacuum-dried at 60°C until the water content is below 20%, and then minced by a meat grinder;

[0022] (2) Get 100g of minced tuna skin and use 250ml of ether to reflux at low temperature for 12-14h to remove most of the fat, and use gas chromatography to detect that the fish skin fat residue is less than 1%, and stop degreasing;

[0023] (3) Soak the degreased tuna skin with 0.2% to 0.3% (w / v) NaOH solution for 120 minutes, and change the NaOH solution every 40 minutes;

[0024] (4) Clean the fish skin soaked in NaOH solution to neutrality with deionized water;

[0025] (5) With 0.3% ~ 0.4% (v / v) H 2 SO 4 Soak the fish skin after alkali treatment and cleaning for 120 minutes, and change H every 40 minutes. 2 SO 4 solution;

[0026] (6) Wash with deionized water and wash with H 2 SO 4 Th...

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PUM

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Abstract

The present invention discloses a method for preparing tuna skin gelatin, belonging to the technical field of fish resources utilization. According to the invention, skin tuna skin is subjected to pretreatment, degreasing, acid and alkali treatment, and then is subjected to gelatin extraction, and deodorization by filtering through activated carbon, and ion-exchange purification to remove heavy metal ions, and then concentration under vacuum and spray-drying to obtain finished products of tuna skin gelatin with quality meeting the edible gelatin standards specified in national standards. The tuna skin gelatin of the invention can be further processed for use and can be used in medicine, food and cosmetic industries, achieving the purposes of turning waste into treasure, and comprehensively and efficiently developing high value-added tuna by-products. The method of the invention has advantages of: 1, a scientific and reasonable process is adopted, the temperature in the reaction process is low and easy to control, which saves energy and controls the molecular weight of the skin gelatin in a relatively narrow range, and the quality of obtained gelatin is high; and 2, activated carbon is used for filtering for deodorization, improving the taste of the product.

Description

technical field [0001] The invention relates to the field of comprehensive utilization of fish resources, in particular to a preparation method of tuna skin gelatin. Background technique [0002] Tuna (Tunas) belongs to Perciformes Scombroids, also known as tuna and tuna. It is mainly distributed in low and mid-latitude sea areas, and is widely distributed in the Pacific Ocean, Atlantic Ocean, and Indian Ocean. It is also distributed in the East China Sea and South my country Sea, and belongs to oceanic warm water migratory fish. Tuna has the reputation of "the king of fish". The meat is tender and delicious, and it is not easy to be polluted by the environment. It is a rare healthy delicacy. The protein content of tuna is as high as more than 20%, but the fat content is very low, commonly known as "undersea chicken". [0003] Tuna is an important resource of pelagic fisheries in the world. The output value of tuna in the world reaches 35 billion U.S. dollars, and it is on...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09H3/00
Inventor 陈书勤黄康宁汪子雄杨乃斌莫冬何忠平
Owner BEIHAI GOFAR MARINE BIOLOGICAL IND CO LTD
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