Preparation method of sturgeon skin gelatin

A technology for fish skin gelatin and sturgeon, which is applied in the field of preparation of sturgeon fish skin gelatin, can solve the problems of unfavorable absorption, many components of treatment liquid, poor taste, etc., and achieves the effects of improving protein content, saving operation time, and promoting comprehensive utilization.

Active Publication Date: 2017-02-22
西安康远晟生物医药科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The method uses tuna skin as a raw material, which solves the disadvantages of fish skin having a bitter smell, poor taste, wide molecular weight distribution, which is not conducive to human body absorption, etc.
However, this method has too many components in the treatment solution, which is inconvenient to prepare and the treatment solution is unstable.

Method used

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  • Preparation method of sturgeon skin gelatin
  • Preparation method of sturgeon skin gelatin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0025] In the present embodiment, 50 g of the sturgeon skin obtained by stripping is used, and processed by the preparation method of the sturgeon skin gelatin of the present invention, comprising the following steps:

[0026] 1) Take 50g of fish skin and let the sturgeon skin dry naturally; soak in distilled water for 24 hours, and extract it ultrasonically for 2 hours at 4°C to make the fish skin swell;

[0027] 2) Wrap the sturgeon skin obtained in step 1) with gauze, filter out the water and cut it into pieces, soak in 150mL of 2.0% NaOH solution at 4°C for 24 hours to remove impurities such as soluble protein and pigment; wash with water To neutrality, use 150mL of HCl solution with a concentration of 0.3%, soak for 4 hours at 4 ℃, loosen the fish skin tissue to make the fish skin continue to swell, and remove minerals at the same time, the color of the treated fish skin turns white, and the volume Expansion and high elasticity;

[0028] 3) Wash the sturgeon skin obtaine...

Embodiment 7

[0058] Embodiment 7: the mensuration of sturgeon skin gelatin gel strength:

[0059] The gel strength is related to the content of imino acid (proline and proline) in gelatin. When the content of imino acid is low, the gel strength formed is weak.

[0060] Weigh an appropriate amount of dried sturgeon skin gelatin powder, and prepare a 6.67% (w / v) gelatin solution with deionized water. Heat it in a constant temperature shaking water bath at 60°C for 30 min to make it gel. Then transfer the sample into a beaker with a diameter of 3 cm and a height of 4.5 cm, and place it in a constant temperature environment of 7-8 °C for 18 hours, then use TA. XT2i food texture analyzer was used to measure the gel strength.

[0061] The pretreated gelatin gel, by TA. The XT2i food texture analyzer determined that the gel strength was 434g. The gel strength is related to the content of imino acid (proline and proline) in gelatin. When the content of imino acid is low, the gel strength forme...

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Abstract

The invention discloses a preparation method of sturgeon skin gelatin. The method comprises the following steps: air-drying fresh fish skins; soaking the dried fish skins with distilled water, performing ultrasonic treatment, cutting the fish skins into pieces, and performing alkaline water treatment and acid water treatment; and then extracting the well-treated fish skins by adopting an aqueous two-phase extraction method, and then performing centrifugation, concentration and drying to obtain the sturgeon skin gelatin. According to the preparation method of the sturgeon skin gelatin, the preparation time is short, the operation is simple, and the prepared sturgeon skin gelatin is high in protein content and purity, strong in gel strength, and light in fishy smell and has few impurities.

Description

technical field [0001] The invention relates to the technical field of biological extraction, in particular to a preparation method of sturgeon skin gelatin which can be used as a thickener, an adhesive, or a production raw material for repair materials, capsules and the like. Background technique [0002] Sturgeons first appeared in the Early Triassic period 230 million years ago. Sturgeons have extremely important academic research value and are living fossils for studying the evolution of fish and vertebrates. Sturgeon is an economic fish with excellent edible value. Its whole body (including bones) except for the bone plate on the body surface is edible, and its nutritional value is very high. It is listed as a high-grade tonic. It has been used medicinally in ancient times. [0003] Tissues rich in collagen such as bones and scales are pretreated and transformed, then extracted at a suitable temperature, and then undergo various processing steps to generate high-molecu...

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 梁承远田丹妮贾敏一
Owner 西安康远晟生物医药科技有限公司
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