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Film preservative, preparation method thereof, and application thereof in preservation of euphausia superba

A film-coating preservative and technology of Antarctic krill, which is applied in the direction of preserving meat/fish with a coating protective layer, can solve the problem that the autolysis of Antarctic krill cannot be completely inhibited, the sensory quality of Antarctic krill is affected, and the refrigeration of Antarctic krill can be improved. Energy consumption and other issues, to achieve the effect of delaying spoilage, inhibiting bacterial reproduction, and reducing storage energy consumption

Inactive Publication Date: 2015-11-11
ZHEJIANG OCEAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, Antarctic krill is generally insured through frozen storage, and the stability of frozen storage in domestic cold storage is mostly around -20°C, which not only cannot completely inhibit the autolysis of Antarctic krill, but also easily causes the fluorine in the shrimp shell to migrate into the shrimp meat , causing the fluorine content in the shrimp meat to increase, so the special cold storage for storing Antarctic krill in Japan and other countries is generally around -25°C or below. Denature the protein of krill, and at the same time make the tyrosinase in krill easily oxidized to form melanin, thus affecting the sensory quality of Antarctic krill

Method used

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  • Film preservative, preparation method thereof, and application thereof in preservation of euphausia superba
  • Film preservative, preparation method thereof, and application thereof in preservation of euphausia superba
  • Film preservative, preparation method thereof, and application thereof in preservation of euphausia superba

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] 1.1 Preparation of coating preservative

[0019] Soybean polysaccharide preparation: take dried okara, add pure water 10 times the mass of dried okara according to the mass-volume ratio (g / ml) of dried okara to water, stir and adjust the pH value to 4, cook at 110°C for 2.5h, then cool to room temperature , and then filter and separate the cooking product to obtain a soybean soluble polysaccharide solution, then purify and dry to obtain soybean polysaccharide.

[0020] Preparation of bayberry extract: take fresh bayberry fruit, dry and crush, add 3 times the mass of 95% ethanol to soak for 24 hours, ultrasonically assisted extraction for 20 minutes to obtain an extract, and concentrate to obtain an extract; disperse the extract in water, wash with ethyl acetate Extraction is carried out, adsorbed by D101 macroporous resin, eluted with 15%-65% ethanol, and the eluate is vacuum-dried and crushed to 200 meshes to obtain a bayberry extract.

[0021] Preparation of honeysuc...

Embodiment 2

[0029] 2.1 Preparation of coating preservative

[0030] Soybean polysaccharide preparation: take dried okara, add pure water 20 times the mass of dried okara according to the mass-volume ratio (g / ml) of dried okara to water, stir and adjust the pH to 5, cook at 130°C for 1.5h, then cool to room temperature, Then, filter and separate the cooked product to obtain soybean soluble polysaccharide solution, and then purify and dry to obtain soybean polysaccharide.

[0031] Preparation of bayberry extract: take fresh bayberry fruit, dry and crush, add 5 times the mass of 95% ethanol to soak for 32 hours, ultrasonically assisted extraction for 25 minutes to obtain an extract, and concentrate to obtain an extract; disperse the extract in water, wash with ethyl acetate Extraction is carried out, adsorbed by D101 macroporous resin, eluted with 15%-65% ethanol, and the eluate is vacuum-dried and crushed to 200 meshes to obtain a bayberry extract.

[0032] Preparation of honeysuckle extra...

Embodiment 3

[0040] 3.1 Preparation of coating preservative

[0041] Soybean polysaccharide preparation: take dried okara, add pure water 15 times the mass of dried okara according to the mass-volume ratio (g / ml) of dried okara to water, stir and adjust the pH to 4, cook at 120°C for 2 hours, cool to room temperature, and then Filtrating and separating the cooked product to obtain a soybean soluble polysaccharide solution, followed by purification and drying to obtain soybean polysaccharide.

[0042] Preparation of bayberry extract: take fresh bayberry fruit, dry and crush, add 4 times the mass of 95% ethanol to soak for 28 hours, ultrasonically assisted extraction for 22 minutes to obtain an extract, concentrate to obtain an extract; disperse the extract in water, wash with ethyl acetate Extraction is carried out, adsorbed by D101 macroporous resin, eluted with 15%-65% ethanol, and the eluate is vacuum-dried and crushed to 200 meshes to obtain a bayberry extract.

[0043] Preparation of ...

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PUM

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Abstract

The invention relates to a film preservative. The film preservative is composed of the following components in percentage by mass: 0.8 to 1.5 percent of soybean polysaccharide, 0.6 to 1.0 percent of sodium alginate, 0.2 to 0.5 percent of citric acid, 0.1 to 0.3 percent of phytic acid, 3 to 5 percent of a waxberry extract, 5 to 7 percent of a honeysuckle extract, 0.08 to 0.2 percent of magnesium salt and the balance of pure water. The invention also relates to a preparation method of the film preservative and application of the film preservative in preservation of euphausia superba. Compared with the prior art, the film preservative has the advantages that a film can be formed on the surface of the euphausia superba so as to inhibit the invasion and the growth of pathogenic bacteria such as bacteria and fungi, the decaying deterioration of an euphausia superba body is prevented, the euphausia superba treated by the film preservative can be stored at the temperature of 0 to 4 DEG C, the taste and the quality of shrimp meat are guaranteed, and compared with the storage energy consumption of a conventional low-temperature storage method, the storage energy consumption of the film preservative is reduced.

Description

technical field [0001] The invention relates to the field of seafood preservation, in particular to a film-coated preservation agent, a preparation method thereof and an application in preservation of Antarctic krill. Background technique [0002] Antarctic krill (Euphausia superba), also known as giant krill or Antarctic krill, is a krill that lives in the waters of Antarctica in the Southern Ocean. Antarctic krill is a shrimp-like invertebrate that lives in groups, sometimes with a density of 10,000-30,000 individuals / m 3 . They feed on tiny phytoplankton, from which they convert the energy from primary production to maintain their life cycle in the pelagic zone. They are key species in the Antarctic ecosystem. In terms of biomass, they may be the most abundant on Earth. successful animal species. Antarctic krill is the largest animal protein pool on earth. According to estimates, the biological reserves of Antarctic krill are 400-1.55 billion tons, and the annual susta...

Claims

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Application Information

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IPC IPC(8): A23B4/10
Inventor 霍健聪邓尚贵
Owner ZHEJIANG OCEAN UNIV
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