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Preparation method of tilapia skin gelatin

A technology of tilapia and skin gelatin, which is applied in the field of food manufacturing, can solve problems such as pollution, discarding, and waste, and achieve the effects of reducing hidden dangers, low product cost, and high product quality

Inactive Publication Date: 2013-04-24
XINCHANG GUANYANG TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of these by-products are discarded except a small part is used to produce feed, causing pollution and waste

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0009] In the present invention, firstly, the tilapia skin is soaked in acid and alkali to remove impurities, the skin absorbs water and expands, then the pH and the extraction temperature of the extraction system are well controlled, and finally gelatin is obtained through extraction for a certain period of time; then the obtained slurry (that is, untreated Dried gelatin) is introduced into the slitting machine with a rising film drying system to obtain a roll-shaped edible film.

[0010] (1) The present invention uses different concentrations and types of acids to pretreat tilapia skin gelatin, and comprehensively evaluates the quality of tilapia gelatin with protein extraction rate, hydroxyproline content, protein distribution and viscosity, and the conclusion is more convincing strength and reliability.

[0011] (2) The present invention tests the physical and chemical properties, texture properties and rheological properties of the tilapia gelatin extracted under the opti...

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PUM

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Abstract

The invention provides a preparation method of tilapia skin gelatin, wherein pollution-free and natural fish-skin is used as raw material so as to have extremely high biological safety. The preparation method comprises the following steps: firstly carrying out acid-base dipping on tilapia skin to remove impurities so that the fish-skin is swelled with water; then controlling the pH value and extractive temperature of an extraction system; obtaining gelatin through the extraction after a period of time; and guiding obtained pulp (namely undried gelatin) in a reel containing a film rising and drying system so as to obtain curled edible film. According to the preparation method of tilapia skin gelatin, high-quality fish-skin is used as raw material, and novel nutritious food raw materials and cosmetics nutritional supplements formed through optimized processing of modern science and technology can be widely applied to various nutrition health food and high-grade cosmetics. The waste fish-skin used as raw material is abundant in source of raw material, low in price, low in cost, high in quality, pollution-free in production process and high in substitutability. A suit of British gelatin production line only in our country is used, and the advanced gelatin production technology from abroad is efficiently combined with years of productive practice experience, so that the product quality reaches the advanced level of international similar products.

Description

technical field [0001] The invention relates to the field of food production, in particular to a preparation method of tilapia skin gelatin. Background technique [0002] Gelatin is an important natural macromolecular substance, which contains almost all essential amino acids except tryptophan. Gelatin is a general term for a class of substances that are water-soluble and can be frozen after pretreatment and conversion of animal connective tissues (such as skin, bone, waist and other collagen-rich tissues), and then extracted at an appropriate temperature. According to different extraction methods and processes, the relative molecular mass has a large difference [0003] The relative molecular mass ranges from 15,000 to 250,000. In addition, gelatin has the characteristics of thickening and high safety to biological tissues unique to water-soluble polymers, and can be used as a gelling agent, stabilizer, emulsifier, thickener, foaming agent, adhesive, viscous Binders, cla...

Claims

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Application Information

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IPC IPC(8): C09H3/00C09H9/02
Inventor 刘璐
Owner XINCHANG GUANYANG TECH DEV