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• Packaging,Storage and Transportation •     Next Articles

Effect of low electrostatic field combind with modified atmosphere packaging during controlled freezing-point storage on the quality of Litopenaeus vannamei

Wei-Wen DUAN Xue-Qin ZHANG2,LIU Shu-Cheng2,   

  • Received:2018-08-05 Revised:2019-04-28 Online:2019-07-15 Published:2019-07-23

Abstract: In order to extend the shelf life of Litopenaeus vannamei and improve the quality during controlled freezing-point storage(-1±1℃),and this study examined the effects of different storage condition including(Ⅰ) controlled freezing-point storage(CFPS)、(Ⅱ)low electrostatic field combined with CFPS(LVEF -CFPS)、(Ⅲ)modified atmosphere packaging(MAP) combined with CFPS( MAP-CFPS)、 (Ⅳ)LVEF combined with MAP and CFPS(LVEF-MAP-CFPS) on quality of Litopenaeus vannamei were investigated. Some quality index changes were compared in total bacterial counts, TVB-N, pH, K value, drip loss, whiteness, sensory and rheology property. The results showed that the LVEF-MAP-CFPS(Ⅳ)has best preservation effect among above four storage conditions, and it can significantly inhibited the spoilage and deterioration caused by microorganisms, maintain the sensory quality, delays the degradation of nucleotides to some extent. And had an extended shelf life of 14 days, which is longer than blank group(8 days). The sample color and sensory score were good, drip loss rate Was less than 3%, and the late period of storage has a good effect that muscle protein degradation was slowed down. The low electrostatic field is beneficial to extend the shelf life of Litopenaeus vannamei.

Key words: Litopenaeus vannamei, preservation, low electrostatic field, modified atmosphere packaging, shelf life during controlled freezing-point storage

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