Accumulation of urocanic acid (UCA) in stored fish has been attributed to both endogenous and exogenous histidine ammonia lyase (HAL) activity. The level HAL Indian mackerel, tuna, sardine were monitored at different temperatures. It was also evaluated during storage eviscerated whole under vacuum packaging. UCA production storage. highest the lowest activity fresh observed mackerel tuna (26.32...

Cardiovascular dynamics of tuna have been investigated by recording blood pressures and flows in the central circulation of both anaesthetised and swimming individuals. In anaesthetised fish (N=5), heart rate averaged 1 1 2 S l beats min-l (mean 2 s.E.) and stroke volume was 0.67M.24mlkg-' when normoxic water flowed over the gills. Ventricular diastolic pressure was zero until atrial contractio...

Er, B., B. DEmirhan, S. Y. BaS, G. YEntur and a. B. OktEm, 2014. Determination of histamine levels in canned tuna fish. Bulg. J. Agric. Sci., 20: 834-838 the presence of biogenic amines in foods is a chemical indication of food spoilage. therefore, monitoring of biogenic amines levels in food and food products is important. In this study, total number of 80 canned tuna fish samples of four diff...

Northern bluefin tuna (Thunnus thynnus) were caught by purse seine boats and brought to a farm for a rearing cycle of 1.5 years. Mortalities occurred in the first weeks of acclimatization at the facility. Parasitological examination revealed plerocercoids of the cestode Hepatoxylon trichiuri embedded in the stomach mucosa. The larvae were found in 28.4% of the fish and the mean abundance was 3....

Abstract Tuna is a large pelagic fish that widely found in Indonesian waters as one of the countries have an important role global tuna production. Moreover, has potential to be processed into frozen tuna. The added value result freezing process will increase economic this product. Thus, it makes developed industry. One things need considered establishment industry location determination. study...

The by-product from tuna processing is a potential source of edible protein. Therefore, it is very important to extract protein from such raw materials for human food. In this study the optimum pH for protein extraction from tuna by-products was optimized by using isoelectric solubilization and precipitation processes. The Response Surface Methodology (RSM) and the single factor model were used...

Yellowfin tuna (Thunnus albacares) are known to preferentially occupy the surface mixed layer above the thermocline and it has been suggested that they are physiologically restricted to water temperatures no more than 8 ◦C colder than surface waters. However, we here report for dive data acquired from a large yellowfin tuna which demonstrate for the first time that this species is indeed capabl...

BACKGROUND Fish are a source of persistent organic pollutants (POPs) in the human diet. Although species, trophic level, and means of production are typically considered in predicting fish pollutant load, and thus recommendations of consumption, capture location is usually not accounted for. OBJECTIVES Yellowfin tuna (Thunnus albacares) are harvested from across the world's oceans and are wid...

Some heavy metals are dangerous to health and there is rising concern about the quality of foodstuffs in some parts of the world. Fish, particularly Tuna fish, can concentrate huge quantities of several metals from water and they even play a significant role in human nourishment. OBJECTIVES: In this study, the concentrations of mercury and four trace metals in five brands of canned tuna samples...

Within the tropical and subtropical oceans, tuna forage opportunistically on a wide variety of prey. However, little is known about the trophic ecology of the smallest size classes which play an important role in stock assessments and fisheries management. The foraging behavior of yellowfin tuna, Thunnus albacares (23.5–154.0 cm FL), collected from nearshore Fish Aggregating Devices (FADs) arou...