Preparation method of sturgeon skin gelatin

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...

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