Comparison of Fatty Acid Composition in Edible Muscle Tissue of Three Native Trout Species:Salmo rizeensis, Salmo coruhensis, and Salmo caspius


Karslı B.

2nd International Symposium on Biodiversity Research, Rize, Turkey, 18 November 2020, pp.256

  • Publication Type: Conference Paper / Summary Text
  • City: Rize
  • Country: Turkey
  • Page Numbers: pp.256

Abstract

The aim of present study was to compare fatty acid composition of Rize trout (Salmo rizeensis),

Black Sea trout (Salmo coruhensis), and Caspian trout (Salmo caspius). These species were obtained from Ballı

stream, Sarayköy stream (both are coastal streams in northeastern Anatolia, the Black Sea basin), and

Toros stream (a drainage of Kura River, Caspian Sea basin), respectively. Gas chromatography/mass

spectrometry (GC-MS) was used to identify fatty acid composition of samples. The composition of fatty

acids showed that total monounsaturated fatty acids (ΣMUFA) in S. rizeensis and S. coruhensis were the

highest, followed by saturated (ΣSFA) and polyunsaturated (ΣPUFA). However, the dominant fatty acid

group in S. caspius was SFA, followed by MUFA and PUFA. The differences among SFA, PUFA/SFA,

EPA+DHA, Σn3, Σn6 and Σn6/ Σn3 values of trout species were statistically significant (P<0.05). The

most dominant fatty acids in all species were palmitic acid (C16: 0) in SFAs, oleic acid (C18: 1n9c) in

MUFAs, linoleic acid (18:2n6c), EPA (C20: 5n3) and DHA (22: 6n3) in PUFAs. It was determined that

the n6/n3 and PUFA/SFA ratios were greater than those recommended by the Department of Health of

the UK. Moreover, the atherogenic (AI) and thrombogenic (TI) indices of samples were in accordance

with the limit values reported by international organizations. This study determined that all three trout

species are a good nutritional source for human consumption in terms of EPA, DHA and n-3 PUFA

contents.