A fresh-keeping method of large yellow croaker with natural fresh-keeping agent combined with modified atmosphere packaging

Abstract

The invention discloses a method for preserving pseudosciaena crocea by combining a natural preservative with modified atmosphere packaging, and belongs to the technical field of aquatic product preservation. The method comprises the following steps: (1) slaughtering the fresh and alive pseudosciaena crocea and flushing; (2) soaking the pseudosciaena crocea in the natural preservative, wherein the natural preservative contains the following materials in parts by weight: 10-20 parts of melicope patulinervia extract liquid, 15-25 parts of ginkgo leaf extract liquid, 20-30 parts of grapefruit extract liquid and 30-45 parts of purple perilla extract liquid; (3) performing modified atmosphere packaging; (4) refrigerating for preservation. The method has preservation and anti-corrosion effects and can delay the food decomposition and deterioration speed; a thin film formed on the surface of the pseudosciaena crocea is nontoxic and edible; by combination with the modified atmosphere packaging, the preservation time of the pseudosciaena crocea is prolonged and the preservation effect of the pseudosciaena crocea is improved; moreover, the method is simple, convenient, safe, pure natural and low in production cost; the pseudosciaena crocea processed by the method still has the freshness, flavor and texture similar to those of alive pseudosciaena crocea within 55-65 days.

Description

technical field [0001] The invention belongs to the technical field of fresh-keeping of aquatic products, and in particular relates to a fresh-keeping method of large yellow croaker in combination with a natural fresh-keeping agent and modified atmosphere packaging. Background technique [0002] At present, the large yellow croaker has the following sales channels for processing and preservation: a small amount is transported to the destination by a keep-alive ship for sale; some is preserved by chilling, that is, in a foam box, a layer of crushed ice and a layer of fish are kept fresh and sealed in a whole box , Generally, fresh-keeping fish in this way mainly enter supermarkets and vegetable markets. The freshness of this kind of fresh-keeping fish in winter road transportation is 3-4 days. The index can still reach the first level, but it is difficult to guarantee the quality beyond this deadline; the caught fish are transported to the processing factory to be ice-coated ...

AI Technical Summary

Problems solved by technology

[0002] At present, the large yellow croaker has the following sales channels for processing and preservation: a small amount is transported to the destination by a keep-alive ship for sale; some is preserved by chilling, that is, in a foam box, a layer of crushed ice and a layer of fish are kept fresh and sealed in a whole box , Generally, fresh-keeping fish in this way mainly enter supermarkets and vegetable markets. The freshness of this kind of fresh-keeping fish in winter road transportation is 3-4 days. The index can still reach the first level, but it is difficult to guarantee the quality beyond this deadline; the caught fish are transported to the processing factory to be ice-coated and then processed into frozen products, stored in the cold storage, and sold at an appropriate time; a very small amount is processed into dry products for sale. Dried products generally have high salt content, but they lack the tender texture of fresh fish muscle itself, which does not meet the natural, green and healthy needs of modern dietary consumption

The above-mentioned processing and preservation cannot guarantee the freshness, flavor and texture of fresh fish for a long time

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