Potential of Seafood Industry Byproducts as Sources of Recoverable Lipids: Fatty Acid Composition of Meat and Nonmeat Component Of Selected Indian Marine Fishes.

Lipids from different body components (head, meat and waste) of three commercial
varieties of Indian marine fishes-Pink perch (Nemipterus japonicus), Indian mackerel
(Rastrelliger kanagurta) and Indian oil sardine (Sardinella longiceps) were analyzed
for lipid class distribution and fatty acid profile.Total lipid (TL) content was in
the range of 4.3–13.6% (wet weight basis [wwb] ) in head, 2.53–10.97% (wwb) in
meat and 2.7–15.1% (wwb) in waste. The highest TL was in sardine waste (14.1%).
Among all the body components of different fishes, neutral lipipids (NL) were
higher in head (83.2–89.2%). Fatty acid composition revealed higher concentration
of palmitic acid among the saturated fatty acids in TL of all the fishes, irrespective of
the body components. In case of unsaturated fatty acids (UFAs), eicosapentaenoic
acid (EPA) and docosahexaenoic acid (DHA) were found in higher concentrations.
The potential of nonmeat components of marine fishes as sources for recovery of
UFAs is highlighted by this study. PRACTICAL APPLICATIONS
The health benefits of fish oil especially EPA and DHA are well documented. Fish oil
has several applications including pharmaceutical, feed and nutraceutical applications.
With dwindling fish catches and increasing demand for food fishes, alternatives
for fish oil are a need of the hour. Lipids recovered fromprocessing by products
of commercial fishes are better alternatives to fish oil and can effectively contribute
towards sufficing the demand for fish oils in the aqua- or livestock feed industries.
The present work mainly highlights the importance of processing byproducts/
wastes as alternative sources of fish oil.