Ultrasound treatment of frozen crayfish with chitosan Nano-composite water-retaining agent: Influence on cryopreservation and storage qualities
2019
Abstract The synergistic impact of ultrasound and Nano-water retaining agent on the cryoprotective effect on crayfish during frozen storage was investigated. The samples soaked in water-retaining agent (WRA), ultrasonic 60 W treatment combined with water-retaining agent (WRA-US60W) and ultrasonic 80 W treatment combined with water-retaining agent (WRA-US80W) were frozen storage at −18 °C. The indices of frozen storage in 0, 7, 14, 21, 28, 35 and 42 days were measured. The results showed that there was a significant difference in the soaking weight gain, thawing loss, water content and water activity between control group and WRA groups (P
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