Zhejiang University

Fei Lv

Yuting Ding

Xuxia Zhou

Shulai Liu

Jianhua Liu

Jianyou Zhang

Xia Xu

Shanping Chen

Peicheng Zhao

Saiqi Gu

Zhicheng Zheng

Zhenyu Zhang

Yanbo Wang

Zhigang Ke

Shichen Zhu

A method for preserving aquatic products at sea includes the following steps: an on-board refrigeration system is used to refrigerate the antifreeze solution, and the antifreeze solution is used as a main cold source, and temperatures at centers of fish bodies drop rapidly to achieve rapid cooling and reduce activity of endogenous enzymes and inhibit proliferation of microorganisms by direct or indirect heat exchange with captured catches. The antifreeze solution contains edible alcohol, propylene glycol, glycerol, calcium chloride, sodium chloride, amino acids, Antarctic krill protein hydrolysate with average molecular weight of 50-100 KDa, surfactant and water, and the mass percentage of each component is as follows: edible alcohol 15%-30%, propylene glycol 10%-30%, glycerol 2%-15%, calcium chloride 1%-10%, sodium chloride 3%-10%, amino acid 0.1%-0.15%, Antarctic krill protein hydrolysate 0.01%-0.3%, surfactant 0.005%-0.5%, and the balance is water.

Method of green and safe preservation for aquatic products at sea

The present invention relates to a method and a device for ship-borne freezing of marine products after treated by highly activated water and nondestructive sensing of ice crystals. Through treating the seawater with atmospheric plasma in a certain atmosphere and introducing the tail gas from plasma reactor into the seawater in tail gas collecting device, the highly activated water is obtained. After cooling by the ship-borne refrigeration system, the cooled highly activated water can be used to cool and sterilize the captured marine products timely. During the following freezing processes, both the ultra-high frequency (UHF) electromagnetic field system and pulsed ultrasonic monitoring system are applied simultaneously, which can not only effectively reduce the size of ice crystals and the juice loss of the frozen products during thawing, but also inhibits the thermal effect of electromagnetic field.

Method and device for ship-borne freezing of marine products after treated by highly activated water and nondestructive sensing of ice crystals

The present invention relates to a continuous on-board drying method for Antarctic krill and a continuous on-board processing method of shelled Antarctic krill. The drying method includes the following steps: 1) subjecting fishing materials to cleaning, sorting, and dewatering with a vibrating screen; 2) rapidly heating the krill to the temperature of up to 70&#xb0; C. using infra-red rays; 3) hot-air drying; 4) impurity removal by vacuum; 5) cooling to obtain dried krill. The processing method includes the following steps: a) subjecting fishing materials to cleaning, sorting, and dewatering with a vibrating screen; b) rapidly heating the krill to the temperature of up to 70&#xb0; C. using infra-red rays; c) hot-air drying; d) subjecting the dried krill to shelling treatment to separate shell from meat, to obtain shelled krill; e) impurity removal by vacuum to obtain shelled krill product. The methods in the present invention are highly efficient, energy saving, green and environmental protection, and the krill products have high quality and safety.

Continuous on-board processing of seafood after fishing on the sea

Continuous drying for Antarctic krill and processing of shelled Antartic krill on board

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Hangzhou, China

Fei Lv