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Method for producing pigskin gelatin by alkaline method

A technology for gelatin and pigskin is applied in the field of alkaline production of pigskin gelatin, which can solve the problems of low extraction efficiency, long time consumption, etc. Effect

Active Publication Date: 2019-02-15
山东恒鑫生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In the prior art, the method for producing gelatin mainly contains five kinds of alkali method, acid method, salt method, saline-alkali method, enzymatic method, the most commonly used production method in industrialized production is alkali method and acid method at present, wherein alkali In the market where more than half of the gelatin is produced by the alkaline method, high-viscosity gelatin can be prepared by the alkaline method, but its extraction efficiency is low, and the production process takes a long time, up to 35-90 days. Therefore, it is necessary to find a method that can improve the alkaline production process. The extraction rate of gelatin and the method of reducing the production cycle are very important

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  • Method for producing pigskin gelatin by alkaline method
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Effect test

Embodiment 1

[0033] A method for producing gelatin by alkali method, the specific steps of the method are:

[0034] (1) Pigskin pretreatment: take fresh pigskin, depilate and cut the pigskin into small pieces of 2mm×2mm, soak the blocky pigskin in dodecylbenzenesulfonic acid with a concentration of 1.5% at 40°C Sodium solution for 3.0h, then fully wash with water to remove residual sodium dodecylbenzenesulfonate;

[0035] (2) Hot soaking: Soak the pigskin degreased in step (1) in hot water at 90°C for 6 hours, wherein the hot water needs to immerse the pigskin, filter, and then cool the pigskin to 10°C;

[0036] (3) Liming: Soak the pigskin obtained in step (2) with a concentration of 1% calcium hydroxide suspension, wherein the weight ratio of pigskin to calcium hydroxide suspension is 1:3, and the immersion time is 1d. Ash operation, let go of the old calcium hydroxide suspension, wash the pigskin with clean water, freeze the pigskin to -8°C, and then soak it in a calcium hydroxide susp...

Embodiment 2

[0049] A method for producing gelatin by alkali method, the specific steps of the method are:

[0050] (1) Pigskin pretreatment: take fresh pigskin, depilate and cut the pigskin into small pieces not larger than 2mm×2mm, soak the blocky pigskin in dodecylbenzene with a concentration of 1.5% at 48°C Sodium sulfonate solution for 3.0h, then fully wash with water to remove residual sodium dodecylbenzenesulfonate;

[0051] (2) Hot soaking: Soak the pigskin degreased in step (1) in hot water at 75°C for 8.5 hours, wherein the hot water needs to immerse the pigskin, filter, and then cool the pigskin to 10°C;

[0052] (3) Liming: Soak the pigskin obtained in step (2) with a concentration of 2% calcium hydroxide suspension, wherein the weight ratio of pigskin to calcium hydroxide suspension is 1:2, and the immersion time is 1d. Ash operation, let go of the old calcium hydroxide suspension, wash the pigskin with clean water, freeze the pigskin to -7°C, and then soak it in a calcium hy...

Embodiment 3

[0065] A method for producing gelatin by alkali method, the specific steps of the method are:

[0066] (1) Pigskin pretreatment: take fresh pigskin, depilate and cut the pigskin into small pieces of 1mm×1mm, soak the blocky pigskin in dodecylbenzenesulfonic acid with a concentration of 2.0% at 50°C Sodium solution for 2.0h, then fully wash with water to remove residual sodium dodecylbenzenesulfonate;

[0067] (2) Hot soaking: Soak the pigskin degreased in step (1) in hot water at 90°C for 6 hours, wherein the hot water needs to immerse the pigskin, filter, and then cool the pigskin to 5°C;

[0068] (3) Liming: Soak the pigskin obtained in step (2) with a concentration of 1.5% calcium hydroxide suspension, wherein the weight ratio of pigskin to calcium hydroxide suspension is 1:3, and the immersion time is 2 days. Ash operation, let go of the old calcium hydroxide suspension, wash the pigskin with clean water, freeze the pigskin to -5°C, and then soak it in a calcium hydroxide...

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Abstract

The invention discloses a method for producing pigskin gelatin by an alkaline method and belongs to the technical field of gelatin processing. The method comprises the steps of raw material pretreatment, hot soaking, liming, washing, pickling, acid removal, neutralization, gelatin extraction, filtration, concentration, high temperature sterilization and drying. The hot soaking step is added afterthe pretreatment, so that a pigskin tissue structure is loose; a liming process is accelerated; the gelatin production time is shortened; freezing operation is performed before and during the liming operation so as to ensure that the prepared gelatin is more complete in structure; the gelatin extraction operation is performed for four times during the extraction; the extraction efficiency of the gelatin is improved; and the freezing operation during the gelatin extraction effectively improves jelly strength and viscosity of the gelatin.

Description

technical field [0001] The invention relates to a method for producing pigskin gelatin by an alkaline method, which belongs to the technical field of gelatin processing. Background technique [0002] Gelatin (Gelatin) is the collagen contained in animal skin, bone, cartilage, ligament, sarcolemma, etc., which is a polymer of high-molecular polypeptide obtained after purification and primary hydrolysis, so it is also called animal gelatin and fat glue. . The finished product of gelatin is a colorless or light yellow, transparent or translucent and hard amorphous substance, the whiter the color, the better the quality. Gelatin is insoluble in cold water, but can slowly absorb water and swell to soften. Gelatin can absorb water equivalent to 5 to 10 times its weight. Gelatin belongs to a kind of macromolecular hydrophilic colloid, and is a low-calorie health food with high nutritional value. It can be used to make candy additives, frozen food additives, etc. Indispensable ra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09H3/00
CPCC09H3/00
Inventor 陈庆成
Owner 山东恒鑫生物科技有限公司
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