Effects of Vietnamese tamarind fish sauce enriched with iron and zinc on green mussel quality
2019
Nguyen Phung Tien | Sunisa Siripongvutikorn | Worapong Usawakesmanee
Marinating is a traditional technology to improve the shelf - life and quality of products. Enriched Viet- namese tamarind fish sauce was prepared and used to marinate green mussels. Subjects of this research were: green mussels (C1), marinated green mussels (C2), and marinated green mussels packaged in modified atmosphere (M1, M2, and M3). A percentage of O :CO :N was 5:50:45 for M1, 5:70:25 for M2, and 5:90:5 for M3. Microbiological, 2 2 2 chemical, and sensory qualities of the samples were analyzed during storage at 4°C for 30 days. The results indicate that glycogen, iron, and zinc contents as well as pH values decreased in all the cases during storage. In addition, TVB-N and TBARS values as well as mesophilic and lactic acid bacteria increased with time in all the samples. The number of psychrophilic bacteria in marinated samples was small or not detected at all. Escherichia coli, Staphylo- coccus aureus, Salmonella spp. and Vibrio cholera were below standard values. Based on sensory acceptability, the shelf-life of C1, C2, M1, M2, and M3 samples was 12, 18, 24, 24, and 27 days, respectively.
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