Preparation method of globefish skin gelatin

A technology of fish skin gelatin and puffer fish skin, which is applied in the field of preparation of puffer fish skin gelatin, can solve the problems of long cycle and high energy consumption, and achieve the effect of low cost, low concentration and high quality

Active Publication Date: 2016-10-12
DALIAN POLYTECHNIC UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This extraction method repeatedly freeze-dries the sample, which requires high energy consumption and long cycle time.

Method used

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  • Preparation method of globefish skin gelatin
  • Preparation method of globefish skin gelatin
  • Preparation method of globefish skin gelatin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The method for preparing puffer fish skin gelatin comprises the following steps:

[0032] (1) Wash the puffer fish skin, remove impurities such as sediment, and chop;

[0033] (2) Soak the cleaned fish skin with a solution containing 0.1mol / L sodium hydroxide and 1% hydrogen peroxide, wherein the mass volume ratio of the fish skin to the solution is 1g:8ml, and the soaking time is 6 hours in total, every 3 hours Change the solution once, the ambient temperature is 4°C;

[0034] (3) The fish skin obtained in step (2) is repeatedly washed with clear water to make the pH reach 7;

[0035] (4) Soak the fish skin obtained in step (3) with an aqueous solution with a concentration of detergent of 1 wt%, wherein the mass volume ratio of the fish skin to the solution is 1:10, the soaking time is 12h, and the ambient temperature is 4°C ;

[0036] (5) the fish skin obtained in step (4) is extracted with 0.5mol / L acetic acid solution at 25°C under constant magnetic stirring, whe...

Embodiment 2

[0043] The method for preparing puffer fish skin gelatin comprises the following steps:

[0044] (1) Wash the puffer fish skin, remove impurities such as sediment, and chop;

[0045] (2) Soak the washed fish skin with a solution containing 0.2mol / L sodium hydroxide and 2% hydrogen peroxide, wherein the mass volume ratio of the fish skin to the solution is 1:10, and the soaking time is 5 hours in total, every 2.5 h Change the solution once, and the ambient temperature is 4°C;

[0046] (3) The fish skin obtained in step (2) is repeatedly washed with clear water to make the pH reach 7;

[0047](4) Soak the fish skin obtained in step (3) with an aqueous solution with a detergent concentration of 2wt%, wherein the mass volume ratio of the fish skin to the solution is 1:12, the soaking time is 8h, and the ambient temperature is 4°C ;

[0048] (5) The fish skin obtained in step (4) is extracted with 0.09mol / L acetic acid solution at 35° C. under constant magnetic stirring, wherein...

Embodiment 3

[0055] The method for preparing puffer fish skin gelatin comprises the following steps:

[0056] (1) Wash the puffer fish skin, remove impurities such as sediment, and chop;

[0057] (2) soak the cleaned fish skin with a solution containing 0.1mol / L sodium hydroxide and 0.8% hydrogen peroxide, wherein the mass volume ratio of the fish skin to the solution is 1g:5ml, and the soaking time is 9 hours in total, every 4.5 h Change the solution once, and the ambient temperature is 4°C;

[0058] (3) The fish skin obtained in step (2) is repeatedly washed with clear water to make the pH reach 7;

[0059] (4) Soak the fish skin obtained in step (3) with an aqueous solution with a detergent concentration of 2wt%, wherein the mass volume ratio of the fish skin to the solution is 1:7, the soaking time is 9h, and the ambient temperature is 4°C ;

[0060] (5) extract the fish skin obtained in step (4) with 0.02mol / L acetic acid solution at 45°C with constant magnetic stirring, wherein th...

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Abstract

The invention provides a preparation method of globefish skin gelatin. The preparation method concretely comprises the following steps: selecting globefish skins, cleaning the globefish skins, removing impurities, and chopping the cleaned globefish skins; adding a sodium hydroxide and hydrogen peroxide composite solution, immersing the chopped globefish skins in the composite solution for 5-10h, and washing the immersed globefish skins with water until the pH value is 7-9 in order to obtain alkali treated globefish skins; adding an aqueous detergent solution with the concentration of 0.1-2%, and immersing the globefish skins for 5-10h; adding an acetic acid solution with the concentration of 0.01-1.0mol/L to carry out extraction; centrifuging the obtained solution, and collecting the obtained supernatant; adding a sodium chloride solution with the concentration of 2.0-3.0mol/L to carry out salting-out; centrifuging the obtained solution, and collecting the obtained precipitate; adding acetic acid with the concentration of 0.01-1.0mol/L to dissolve the precipitate, and carrying out dialysis to obtain a gelatin solution; and freeze-drying the gelatin solution to obtain the globefish skin gelatin. The extraction mode and the extraction conditions are mild, and reagents used in the invention are friendly to environment and have low prices, so the production cost of the globefish skin gelatin is effectively reduced, pollution is reduced, and the high-output and high-quality gelatin product is prepared.

Description

technical field [0001] The invention relates to the field of making fish skin food, in particular to a preparation method of puffer fish skin gelatin. Background technique [0002] In recent years, the output of puffer fish in my country has maintained rapid growth. In 2015, the number of puffer fish cultured reached 22,940 tons. Puffer fish produces a large number of by-products in the process of processing, including fish head, fish skin, etc., which account for about 40-55% of the raw fish by weight, of which about 10% is fish skin, which is often discarded as waste, resulting in a large waste of resources. environmental pollution. [0003] Gelatin, the main component of fish skin, is a high-quality and high-grade material, which is widely used in the fields of medicine, food and cosmetics. Animal tissues from livestock and poultry have always been the main source for people to obtain gelatin, but due to the occurrence of mad cow disease, foot-and-mouth disease, avian i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09H3/00C09H1/04
CPCC09H1/04C09H3/00
Inventor 潘锦锋刘洋夏俪宁董秀萍朱蓓薇顾魁吕博
Owner DALIAN POLYTECHNIC UNIVERSITY
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