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A biological preservation method for prolonging the shelf life of aquatic products

A biological preservation and aquatic product technology, applied in the field of biological engineering, can solve the problems of affecting the taste of the product, hidden safety hazards, increasing costs, etc., and achieve the effect of inhibiting characteristic spoilage bacteria, prolonging the shelf life, and extending the shelf life

Active Publication Date: 2016-08-17
JIANGSU ACAD OF AGRI SCI
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

Traditional chemical preservation and irradiation preservation have certain safety hazards, and low-temperature preservation has certain limitations, such as increasing costs, especially after frozen storage, which seriously affects the taste of products, etc.

Method used

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  • A biological preservation method for prolonging the shelf life of aquatic products
  • A biological preservation method for prolonging the shelf life of aquatic products
  • A biological preservation method for prolonging the shelf life of aquatic products

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Experimental program
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Embodiment Construction

[0029] 1. Preparation of Citron Extract

[0030] Wash 5kg of citron fruit, cut into pieces about 3cm×3cm in size, remove the seeds, and beat the pulp with a tissue homogenizer (Xibeile Electric Co., Ltd.) at low speed for 1min. Add 5 times the volume of methanol to the citron homogenate, shake at 120 rpm for 30 min at room temperature, filter the supernatant, add methanol to the residue and repeat the extraction twice, combine the three methanol extracts, and rotate at 40°C under vacuum until nothing Methanol was evaporated to obtain about 23.5g of concentrated extract, which was stored at 4°C for later use;

[0031] 2. Preparation of sodium alginate solution: Weigh 0.5g of sodium alginate, dissolve it in 1000ml of water, and prepare a solution with a final concentration of 0.5g / L;

[0032] 3. Preparation of calcium chloride solution: Weigh 2g of calcium chloride and dissolve it in 1000ml of water to prepare a solution with a final concentration of 2g / L;

[0033] 4. Weigh an appropri...

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Abstract

The invention provides a biological preservation method for prolonging the shelf life of aquatic products, belonging to the technical field of biological engineering. The citron fruit is crushed and homogenized, extracted with methanol, concentrated under reduced pressure, mixed with sodium alginate solution, and then reacted with calcium chloride solution to form a film on the surface of aquatic products for fresh-keeping storage of aquatic products. The present invention adopts natural citron extract, and combines polymer film-forming technology to be used for the fresh-keeping of aquatic product, take prawn as example, in 6 days storage period, compared with the prawn of blank treatment, chitosan control treatment, bacterial colony The total numbers were 1.17 and 0.31 orders of magnitude lower respectively, and the water loss rate was only 82% of the blank control, which was not significantly different from that of the chitosan treatment. Compared with sugar, the invention greatly prolongs the storage time of fresh and alive prawns, and has broad market prospects.

Description

1. Technical Field [0001] The invention is a biological preservation method for prolonging the shelf life of aquatic products, which combines natural plant-derived extracts with film forming technology to apply the preservation of aquatic products, and belongs to the technical field of biological engineering. 2. Background technology [0002] Citron (scientific name: Citrus medica L.), also known as citron, is a citrus plant in the Rutaceae family. Its medicinal use was first published in "Supplements to Materia Medica". , Lung Meridian, is a traditional Chinese medicine that regulates qi, relieves depression, eliminates phlegm, and relieves diaphragm. "Ben Jing" states that it "safeguards the deficiencies of the five internal organs, replenishes qi and nourishes the middle, relieves pain and detoxification, eliminates all diseases, and relieves hundreds of medicines." Later, many ancient books also recorded that citron had the effects of soothing the liver and relieving depress...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A23B4/18
Inventor 刘小莉周剑忠张丽霞李莹夏秀东王英黄自苏
Owner JIANGSU ACAD OF AGRI SCI
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