title: Seasonal variations of fatty acid profile in different tissues of farmed bighead carp (Aristichthys nobilis).
abstract: Bighead carp (Aristichthys nobilis) is one of the major farmed species of freshwater fish in China. Byproduct volume of bighead carp is significant at up to 60 % of whole fish weight. A better understanding of the nutritional composition is needed to optimize the use of these raw materials. The objective of this research was to characterize seasonal variations of fatty acid profile in different tissues (heads, bones, skin, scales, viscera, muscle and fins) of farmed bighead carp. The fatty acid composition of farmed bighead carp varied significantly with seasons and tissues. The highest lipid content was determined in viscera while the highest EPA and DHA composition were observed in muscle compared to the other tissues. Significantly higher ΣEPA+DHA (%) was recorded in all tissues in summer (June) when compared with those of the other three seasons (p < 0.05). The n-3/n-6 fatty acid ratios in summer ranged from 3.38 to 3.69, nearly three times the ratios of the other three seasons. The results indicated that farmed bighead carp caught in summer could better balance the n-3 PUFA needs of consumers. The byproducts of bighead carp can be utilized for the production of fish oil.
authors.affiliation: College of Food Science and Nutritional Engineering, China Agricultural University, Beijing Higher Institution Engineering Research Center of Animal Product, P. O. Box 112, Beijing, 100083 China.
authors.forename: Hui
authors.initials: H
authors.lastname: Hong
authors.affiliation: College of Food Science and Nutritional Engineering, China Agricultural University, Beijing Higher Institution Engineering Research Center of Animal Product, P. O. Box 112, Beijing, 100083 China.
authors.forename: Hongbing
authors.initials: H
authors.lastname: Fan
authors.affiliation: College of Food Science and Nutritional Engineering, China Agricultural University, Beijing Higher Institution Engineering Research Center of Animal Product, P. O. Box 112, Beijing, 100083 China.
authors.forename: Hang
authors.initials: H
authors.lastname: Wang
authors.affiliation: College of Food Science and Nutritional Engineering, China Agricultural University, Beijing Higher Institution Engineering Research Center of Animal Product, P. O. Box 112, Beijing, 100083 China.
authors.forename: Han
authors.initials: H
authors.lastname: Lu
authors.affiliation: College of Food Science and Nutritional Engineering, China Agricultural University, Beijing Higher Institution Engineering Research Center of Animal Product, P. O. Box 112, Beijing, 100083 China.
authors.forename: Yongkang
authors.initials: Y
authors.lastname: Luo
authors.affiliation: College of Science, China Agricultural University, Beijing, 100083 China.
authors.forename: Huixing
authors.initials: H
authors.lastname: Shen
keywords: DHA; EPA; Gas chromatography; Polyunsaturated fatty acids (PUFA); n-3/n-6 fatty acid ratio