Inhibition of melanosis and microbial growth in Pacific white shrimp (Litopenaeus vannamei) using high CO2 modified atmosphere packaging

The purpose of this study was to evaluate the effect of modified atmosphere packaging (MAP) with varying O2concentrations on the quality changes of Pacific white shrimp during cold storage at (4±1)°C by using the quality indices such as Total viable counts (TVC), TVB-N, pH, firmness, whiteness and sensory evaluation. Results showed that MAP inhibited the microbial growth and the spoilage which was confirmed by the lowered TVC and TVB-N. Among the four MAP groups, shrimp packaged in bags 40%CO2\55%O2\5%N2showed the lowest level of TVC and TVB-N, and shrimp in 40%CO2\5%O2\55%N2had the best appearance with lighter blackspots during storage. Low O2concentration packaging exhibited the ability to retard melanosis, but weakening the ability to impede the spoilage. Extremely high O2concentration with low CO2concentration packaging inhibit the microbial growth compared to the CK, but improved the melonasis of shrimp and reduced its sensory quality rapidly.

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Study of the quality changes and myofibrillar proteins of white shrimp (Litopenaeus vannamei) under modified atmosphere packaging with varying CO2 levels

European Food Research and Technology ◽

10.1007/s00217-013-1918-9 ◽

2013 ◽

Vol 236 (4) ◽

pp. 629-635 ◽

Cited By ~ 24

Author(s):

Yun-Fang Qian ◽

Jing Xie ◽

Sheng-Ping Yang ◽

Wen-Hui Wu

Keyword(s):

Litopenaeus Vannamei ◽

Modified Atmosphere Packaging ◽

White Shrimp ◽

Modified Atmosphere ◽

Myofibrillar Proteins ◽

Quality Changes ◽

Co2 Levels

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Cold Plasma: An Alternative in Litopenaeus vannamei Shrimp Preservation

Journal of Agricultural Studies ◽

10.5296/jas.v9i2.18341 ◽

2021 ◽

Vol 9 (2) ◽

pp. 521

Author(s):

Lucas De Oliveira Soares Rebouças ◽

Julianna Paula do Vale Figueiredo ◽

Maria Carla da Silva Campelo ◽

Jovilma Maria Soares De Medeiros ◽

Renata Bezerra Gomes Rebouças ◽

...

Keyword(s):

Shelf Life ◽

Thermal Plasma ◽

Litopenaeus Vannamei ◽

Cold Plasma ◽

Microbial Growth ◽

Quality Attributes ◽

Pacific White Shrimp ◽

White Shrimp ◽

Non Thermal Plasma

This study aimed evaluating the effects of cold plasma on the quality attributes of Pacific white shrimp (Litopenaeus vannamei). Shrimp were divided into 4 sample groups: one control and the remaining groups subjected to cold plasma at frequencies of 5, 10, and 15 kHz, respectively, during 10 minutes of application followed by evaluation of chemical, physical, microbiological, and sensorial characteristics. Cold plasma contributed significantly to the maintenance of shrimp quality during storage, delaying the melanization process, microbial growth, improving the physicochemical and sensorial qualities of the samples. Exposure of white shrimp to non-thermal plasma at 15 kHz promoted better physicochemical, microbiological, and sensorial results, and increased the shelf life of samples by 5 days, suggesting that the treatment is effective to preserve the quality of shrimp.

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