Composite antifreeze agent and application thereof
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A compound antifreeze technology, which is applied in the application, preservation of meat/fish and peptides through freezing/cooling, can solve the problems of quality deterioration of frozen shrimp, protect the original color, increase muscle water retention, and improve quality effect
Pending Publication Date: 2022-06-24
ZHEJIANG UNIV OF TECH
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[0004] The purpose of the present invention is to solve the defects of the prior art, to provide a compound antifreeze agent and its applicatio
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Embodiment 1
[0036] A preparation and application method of a composite antifreeze agent mainly comprises the following steps: pretreatment of fresh shrimp, preparation of fish scale antifreeze peptide, soaking in the composite antifreeze agent, freezing treatment, vacuum packaging, and cold storage storage.
[0037] (1) Pretreatment of fresh shrimp: After the fresh shrimp is caught, use crushed ice to cool down and cool to death, remove the shrimp head, shrimp shell, and shrimp line, clean it, and place it on a drain rack to drain the water to obtain fresh shrimp.
[0038] (2) Preparation of fish scale antifreeze peptide: fresh fish scales were washed with clean water for 3 times and then dried, and then pulverized by a pulverizer. The treated fish scale powder was added with 0.5mol / L hydrochloric acid for decalcification. The ratio of material to liquid: 1:10 , Decalcification time: 1h, rinse the decalcified fish scales with clean water, add deionized water, the ratio of material to liqui...
Embodiment 2
[0045] A preparation and application method of a composite antifreeze agent mainly comprises the following steps: pretreatment of fresh shrimp, preparation of fish scale antifreeze peptide, soaking in the composite antifreeze agent, freezing treatment, vacuum packaging, and cold storage storage.
[0046] (1) Pretreatment of fresh shrimp: After the fresh shrimp is caught, use crushed ice to cool down and cool to death, remove the shrimp head, shrimp shell, and shrimp line, clean it, and place it on a drain rack to drain the water to obtain fresh shrimp.
[0047] (2) Preparation of antifreeze peptides for fish scales: fresh fish scales were washed with clean water for 3 times and then dried, and then pulverized by a pulverizer. The treated fish scale powder was decalcified by adding 0.5mol / L hydrochloric acid, and the ratio of material to liquid: 1:8 , Decalcification time: 2h, rinse the decalcified fish scales with clean water and add deionized water, the ratio of material to li...
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Abstract
The invention relates to a composite antifreeze agent and application thereof in cryopreservation of aquatic products. The invention discloses a composite antifreeze agent which mainly comprises the following components in parts by mass: 20-50 parts of fish scale antifreeze peptide, 15-35 parts of trehalose, 2-15 parts of ascorbic acid and 8-21 parts of EDTA.Na2. According to the invention, fish scales are used as an antifreeze peptide extraction raw material, so that not only is the quality protection of shrimp meat during freezing realized, but also the comprehensive utilization of processing byproducts is realized, the high-value utilization rate of resources is greatly improved, and the production cost is reduced. Compared with a traditional phosphate cryoprotectant, the novel composite anti-freezing agent is better in treatment effect, safe, efficient, low in sweetness, suitable for anti-freezing protection of frozen shrimp meat and capable of being applied to the field of freezing processing of other aquatic products. The composite antifreeze agent is based on food-grade raw materials, has a good low-temperature freezing protection effect, can significantly improve the quality of frozen shrimp meat, well maintains the original flavor and nutritional value of fresh shrimp, effectively delays protein denaturation and lipid oxidation, prolongs the shelf life, and improves the commodity value.
Description
technical field [0001] The invention relates to a composite antifreeze agent and its application in the freezing preservation of aquatic products, belonging to the field of aquatic product quality safety and technical control. Background technique [0002] Since the 1990s, my country's aquatic product aquaculture production has ranked first in the world. In 2020, China's fresh shrimp output is more than 6.3 million tons. However, due to the fragile tissue of fresh shrimp, it is usually used in transportation, processing, storage and other links. Freezing technology is used to preserve raw materials, but the traditional freezing technology has a long freezing time, large and uneven growth of ice crystals, poor quality of frozen products, and high loss rate after thawing, which reduces the commodity value and comprehensive utilization rate. Especially in recent years, for the convenience of eating, fresh shrimps are usually processed into shrimps for sale, losing the protection...
Claims
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Application Information
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