Effects of orthogonal dual-frequency ultrasound-assisted treatment combined with bioactive coating containing Melissa officinalis L. essential oil on changes in quality, lipid, and protein of large yellow croaker (Pseudosciaena crocea) during cold storage

正交双频超声辅助处理联合含蜜蜂花精油生物活性涂层对大黄鱼冷藏期间品质、脂质和蛋白质变化的影响

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作者:Hao Cheng, Chenchen Zhang, Jinfeng Wang, Jing Xie

Abstract

How to reduce the quality loss of aquatic products during storage is a topic worth exploring. This study proposed a method combining orthogonal dual-frequency ultrasound-assisted treatment (20 kHz vertically, 40 kHz horizontally, 400 W) with bioactive coating (Melissa officinalis L. essential oil-carboxymethyl chitosan-locust bean gum) and discussed the effects of this combined treatment on the quality, lipid, and protein of large yellow croaker during cold storage (4 °C). The results showed that both ultrasound-assisted treatment (US) and bioactive coating (CMCS) significantly inhibited microbial growth and quality deterioration in the fish, with the combined treatment group (US+CMCS) showing the best effect. The shelf life of large yellow croaker in the control group (CK) was 6 d, while the shelf life for US, CMCS, and US+CMCS treatments was 12 d, 12 d, and 18 d, respectively. Additionally, the combined treatment inhibited lipid oxidation and effectively delayed the oxidative degradation of protein in the large yellow croaker during cold storage. Therefore, the method of orthogonal dual-frequency ultrasound-assisted treatment (20 kHz vertically, 40 kHz horizontally, 400 W) combined with bioactive coating (Melissa officinalis L. essential oil-carboxymethyl chitosan-locust bean gum) proposed in this study was a promising approach for the preservation of aquatic products during storage.

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