Seasonal Variations of Fat and Fatty Acid Composition in Muscle Tissues of Mediterranean Octopuses

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Abstract

 The effects of seasons on lipid and fatty acid profiles of muscle types
(mantle and arm) of Mediterranean octopuses (common octopus-Octopus vulgaris
and musky octopus-Eledone moschata) were investigated. The
results showed that lipid levels ranged from 0.75% to 1.60% in both muscle
types of octopuses which were considered as lean. Lipid levels in mantle
tissues of both octopus species were higher than lipid levels in their arms.
Although these two octopus species contain small amounts of lipid, they are
good sources of n-3 PUFAs content
(especially EPA and DHA) for all season regardless of muscle types. The highest
levels of EPA were obtained from mantle and arms tissues (18.23%) of common
octopus in spring. The highest levels of EPA were obtained from mantle (12.90%)
and arms (12.67%) of musky octopus in autumn and winter. The levels of EPA in both
of muscle tissues of common octopus were found to be higher than levels of EPA
in both of muscle tissues of musky octopus. The highest DHA levels were
obtained from mantle tissue (28.17%) of common octopus in summer. There were
significant differences (p < 0.05) in the levels of SFA, MUFA and PUFA in
terms of species, season, and muscle types.    

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Iranian Journal of Fisheries Sciences
Volume 11, Issue 4
October 2012
Pages 724-731

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