45 research outputs found
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No full textChapter 9 of training manual "Utilization of marine bioactive compounds - Research advances and future trends"Not AvailableNot Availabl
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No full textNot AvailableSeparate vegetable oils are preferred for frying fish in different parts of India. The oil can influence composition of lipid, quality and physical properties of fried fish. Five culinary oils such as sunflower, coconut, groundnut, palm and mustard oil were selected for frying Indian mackerel (Rastrelliger kanagurta) and changes in fatty acid composition, lipid oxidation indices, texture profile and colour were evaluated. A significant (p<0.05) influence of culinary oil type on fatty acid composition of fried mackerel was observed. Content of EPA and DHA were significantly decreased in all the deep fried samples. ω3/ω6 ratio was higher in the fish deep fried in coconut oil compared to other oils. The fish - derived EPA and DHA were detected in culinary oils after frying. Principal component analysis of fatty acids of culinary oils and deep fried samples clearly revealed the influence of oil on fatty acid profiles of fried fish. Hardness was highest sample fried in coconut oil. Variation in colour was also observed with respect to type of oil used.Not Availabl
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No full textNot AvailableAquaculture is gaining importance these days as catch from wild cannot keep up with the demand of the growing human population. But the culture system often encounters problems which are potentially
harmful to consumers. This study was carried out in October to December 2012 in three randomly
selected tiger shrimp (Penaeus monodon) farms of Edavanakkadu area, Cochin to evaluate the level of
chemical contaminants and water quality. Shrimp samples were analysed for the presence of antibiotics
such as chloramphenicol and nitrofuran metabolites. The content of heavy metals such as Cd, Co, Cu, Cr, Mn, Ni, Pb and Zn was evaluated in the samples of shrimp, water and sediment. The water quality parameters (temperature, pH, salinity, dissolved oxygen, biological oxygen demand, chemical oxygen demand, total alkalinity and total hardness) were also evaluated. Shrimp samples were found free of chloramphenicol, but 1-aminohydantoin (AHD), metabolite of the prohibited antibiotic nitrofurantoin was detected in shrimp samples from all three farms in the range of 6.39±0.56, 0.595±0.00 and 10.3±0.00 ppb respectively. This points to the serious situation of usage of the prohibited carcinogenic antibiotics in aquaculture. The levels of heavy metals in the shrimp samples were found to be negligible making them safe for human consumption. Comparatively higher levels of heavy metals were present in the sediment and lower levels in water samples. Most of the water quality parameters were within a normal range prescribed for shrimp culture.Not Availabl
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No full textChapter 31 of training manual "Quality assurance of fish and fishery products"Not AvailableNot Availabl
