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Method for extracting gelatin from rabbit skin

A technology of rabbit skin and gelatin, which is applied in the field of agricultural product processing and can solve problems such as long cycle time

Active Publication Date: 2015-09-16
SOUTHWEST UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

The acidification treatment time of the technology disclosed in the prior art to extract gelatin by acid method is generally about 3 to 5 days, and the cycle is still relatively long.

Method used

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Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0019] Preferred embodiments of the present invention are described in detail below.

[0020] 1. Extract gelatin from rabbit skin

[0021] Fresh rabbit skin→cleaning and removing subcutaneous fat→hair removal→cleaning and cutting→removing impurities→cleaning→dilute acid treatment→extracting gelatin→centrifugation→hot air drying→finished gelatin

[0022] ⑴Cleaning and removing subcutaneous fat:

[0023] Wash the rabbit skin three times with water to remove visible impurities. Soak in 10wt% NaCl solution for 12 hours to remove subcutaneous fat;

[0024] ⑵Depilation: add depilatory agent (add Ca(OH) to 5% Na2S 2 until paste) evenly apply on the fur at room temperature, after 4 hours;

[0025] (3) Cleaning and cutting: the depilated rabbit skin is fully washed and cut into small pieces of about 3mm×3mm;

[0026] (4) Impurity protein removal: use 1wt% NaCl solution to soak and stir for 6 hours according to the ratio of solid to liquid (1:5) (change the liquid once every 2 hour...

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PUM

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Abstract

The invention relates to a method for extracting gelatin from rabbit skin, which comprises the following steps: rabbit skin pretreatment: removing subcutaneous fat, unhairing, cleaning and cutting; acidizing: immersing the rabbit skin in 1 wt% hydrochloric acid for 10 minutes; and carrying out gelatin extraction and centrifugal drying. The method can produce high-quality rabbit skin gelatin by combination of short-time dilute acid treatment and hot extraction, and has the advantages of short production cycle, low acid consumption and lower environmental pollution as compared with the traditional gelatin technique. Compared with the characteristics of the aquatic product gelatin, the gelatin produced by the method has the advantages of favorable gel characteristic, high quality and wide application range.

Description

technical field [0001] The invention belongs to the field of agricultural product processing, and relates to a method for preparing gelatin, in particular to a method for extracting gelatin from rabbit skin. Background technique [0002] Gelatin is a degradation product of collagen and one of the natural biopolymer materials. It is widely used in food, medicine, daily chemical, photography and other fields. In 2012, the output of edible and medicinal gelatin in the international market reached 320,000 tons. Traditional gelatin production mainly uses the skin and bones of livestock such as cattle and pigs as raw materials. In recent years, due to the impact of zoonotic diseases such as mad cow disease and foot-and-mouth disease, many countries restrict or prohibit the production, import or use of gelatin from cattle and pigs. ; On the other hand, due to religious beliefs, some Jewish and Islamic regions do not accept pig-derived gelatin products. In recent years, gelatin has...

Claims

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Application Information

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IPC IPC(8): C09H3/00
Inventor 张宇昊于玮马良王雪蒙李洪军贺稚非
Owner SOUTHWEST UNIVERSITY
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