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Shipborne highly activated water treated marine product freezing and ice crystalnon-destructive sensing method and device

A treatment device and technology for activating water, used in seawater treatment, water/sewage treatment, chemical instruments and methods, etc., can solve problems such as increased juice loss, uneven distribution, and decreased food quality, so as to improve shelf life and quality. Uneven action, reduced juice loss effect

Pending Publication Date: 2020-01-17
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] (1) Although freezing can effectively inhibit the activity of microorganisms, if the temperature of frozen seafood fluctuates or thaws, the activity of microorganisms will be restored, which may cause spoilage of seafood;
[0008] (2) The ice crystals formed by the traditional freezing method are large in size and uneven in distribution, which has a certain degree of damage to the cell membrane and tissue structure, resulting in increased juice loss after thawing and a decline in food quality
However, the microwave frequency it uses is 2.45GHz, and the microwave action distance is limited, so it is difficult to apply to large-scale freezing on board, and it fails to realize real-time intelligent monitoring of the freezing process, and it is difficult to avoid the negative impact of microwave thermal effect on the freezing process
[0010] Therefore, although the above method can effectively extend the fresh-keeping period of food, or reduce the size of ice crystals formed by frozen food, and improve the quality of frozen food, it is difficult to apply to timely and large-scale preservation of marine products on board

Method used

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  • Shipborne highly activated water treated marine product freezing and ice crystalnon-destructive sensing method and device
  • Shipborne highly activated water treated marine product freezing and ice crystalnon-destructive sensing method and device
  • Shipborne highly activated water treated marine product freezing and ice crystalnon-destructive sensing method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0096] This embodiment is used to reduce the size of the ice crystals of the frozen fish body, to ensure the freshness of the frozen fish body, and proceed according to the following steps:

[0097] (1) Purchasing fish: Select fresh jack mackerel with clear eyes, bright color, intact fish scales, and hard meat, and transport them back to the laboratory for processing within 20 minutes.

[0098] (2) Preparation of highly activated water: take 10L of seawater with a salt content of 10% in a self-made plasma generating container, the container is a closed 40cm×40cm×40cm cube, equipped with a gas inlet, a gas outlet, and a seawater inlet , Activated water outlet. When not inputting seawater therein or discharging activated water, the valves at the inlet of seawater and the outlet of activated water are all in a closed state. The gas outlet is connected with a conduit and introduced into the seawater of the tail gas collection device. The tail gas collection device is also a clos...

Embodiment 2

[0107] This embodiment is used to reduce the size of the ice crystals of the frozen fish body, to ensure the freshness of the frozen fish body, and proceed according to the following steps:

[0108] (1) Purchase fish: select fresh mackerel with clear eyes, bright color, intact scales and hard flesh, and transport them back to the laboratory for processing within 20 minutes.

[0109] (2) Preparation of highly activated water: take 10L of seawater with a salt content of 1.5% in a self-made plasma generator container, the container is an airtight cube of 40cm×40cm×40cm, equipped with gas inlet, gas outlet and seawater inlet , Activated water outlet. When the seawater is not input into it or the activated water is discharged outside, the valves at the seawater inlet and the activation outlet are all closed. The gas outlet is connected with a conduit and introduced into the seawater of the tail gas collection device. The tail gas collection device is also a closed 40cm×40cm×40cm ...

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Abstract

The present invention relates to a shipborne highly activated water treated marine product freezing andice crystalnon-destructive sensing method and device. Highly activated water is prepared by plasma treatment and plasma tail gas treatment in a certain atmosphere on seawater. The prepared highly activated water has strong sterilization ability, does not contain nitrite, and is used for timely cooling and micro-organism-reducing treatment of marine products after being pre-cooled by a shipborne refrigeration system, thereby effectively extending a fresh-keeping period of the marine products.Ultra-high frequency electromagnetic field-assisted freezing and ice crystal pulsed ultrasonic monitoring are conducted on the cooled marine products, sizes of the ice crystals are significantly reduced, juice loss is reduced, thermal effects of electromagnetic fields are also effectively controlled, and quality of the frozen products is improved. Shipborne efficient and coordinated applications of ''highly activated water cooling and micro-organism-reducing, ultra-high frequency electromagnetic field-assisted freezing and ice crystal ultrasonic non-destructive sensing'' are realized, and themethod effectively improves shelf life and quality of the marine products, is also low in device requirements, green and environmentally friendly, and has great application prospects.

Description

[0001] (1) Technical field [0002] The invention relates to the field of frozen food, in particular to a method and device for non-destructive sensing of seafood freezing and ice crystals treated with highly activated water onboard. [0003] (2) Background technology [0004] my country is rich in seafood resources, and there are many types of raw materials for seafood food, which are widely distributed. Seafood is rich in protein, vitamins, essential amino acids, EPA, DHA and other essential nutrients for the human body, and has the characteristics of low fat, high protein, balanced nutrition, and delicious taste, and is widely favored by consumers. It has become an important source of animal protein intake for people, and is an indispensable and important part of a reasonable dietary structure. However, because seafood contains a variety of endogenous enzymes and attached to a variety of microorganisms, it has the disadvantages of easy corruption of raw materials, short sto...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23B4/09A23B4/015A23B4/06C02F9/10C02F103/32
CPCA23B4/09A23B4/015A23B4/06C02F9/00C02F1/30C02F1/22C02F2103/32A23V2002/00A23V2200/10A23V2300/20A23V2300/48A23V2300/12A23B4/305A23L3/26A23L3/30C02F2103/08C02F1/4608Y02A40/90B01J19/10B01J19/12Y02A20/124C02F1/48B01J2219/0894A23B4/18C02F2303/04B01J19/088
Inventor 丁玉庭周绪霞柯志刚刘书来吕飞刘建华朱士臣
Owner ZHEJIANG UNIV OF TECH
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