Quality Properties, Fatty Acids, and Biogenic Amines Profile of Fresh Tilapia Stored in Ice

Abstract

This work determines quality properties and fatty acids content of Nile tilapia (Oreochromis niloticus) stored in ice for 21 d. The quality properties consist of thiobarbituic acid (TBA), total volatile basic nitrogen (TVB-N), trimethylamine (TMA), and microbiological analysis (total viable count (TVC), total coliform, Salmonella and Staphylococcus aureus) and determination of biogenic amines content (histamine, cadaverine, putrescine, spermine, spermidine, 2-phenylethylamine, agmatine, tyramine, and ammonia). Moreover, the fat, moisture, and ash composition as well as fatty acids profile have also been analyzed. The TBA, TVB-N, and biogenic amines analysis showed rather low levels of spoilage even after 21 d of storage. The microbiological analysis, however, showed that tilapia was unsuitable for consumption after just 10 d. The fat, ash, moisture, and fatty acids profile analysis showed that tilapia is not a good source of n-3 fatty acids. The research indicated that the microbiological analysis was the best method to establish spoilage of tilapia stored in ice, of all analytical methods performed in this study.

Characterization of Bacterial Microbiota in Tilapia Fillets Under Different Storage Temperatures

“…The total bacterial counts and TVBN values were still below 8.5 log(cfu/g) and 20 mg/100g after 18 days of storage at 0 °C, and below 7.6 log(cfu/g) and 20 mg/100g after 42 days of storage at –3 °C. These results are very similar to those found by Kulawik, Özoğul, and Glew ().…”

Quality of monosex tilapia under ice storage: Gutting effects on the formation of biogenic amines, biochemical, and microbiological characteristics

“…Similar patterns of biogenic amine formation were observed in case of ice-stored tilapia, rainbow trout and carp. [26] Formation of PUT and CAD was evident when the APC crossed 6 log cfu/g. Biogenic amines in iced stored whole and gutted monosex tilapia do not represent any health hazard for individuals, as the contents of the most problematic amines, HIM and TYM, were not detected in the samples analyzed.…”

Use Value and Quality of Fillets of Carp Fish ( Cyprinidae ) Reared in Polyculture

“…W 2011 roku 39 % przebadanych osób zadeklarowało zakup świeżych karpi, dorszy, pstrągów, śledzi i łososi (odpowiednio: 34, 32, 31, 17, 14 % wskazań). Klienci kupowali także sandacze, szczupaki, tołpygi, płocie i okonie [16]. Z uwagi na łatwiejszy dostęp do świeżych ryb słodkowodnych, w porównaniu z rybami morskimi najczęściej oferowanymi w stanie zamrożonym, powinny one stanowić większy udział w diecie Polaków [15].…”