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Effects of antioxidative substances from seaweed on quality of refined liver oil of leafscale gulper shark, Centrophorus squamosus during an accelerated stability study

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Title Effects of antioxidative substances from seaweed on quality of refined liver
oil of leafscale gulper shark, Centrophorus squamosus during an accelerated
stability study
Not Available
 
Creator Joseph,Dexy
Chakraborty,Kajal
 
Subject Leafscale gulper shark liver oil
Brown seaweeds
Antioxidant compounds
Accelerated shelf-life study
Spectroscopic fingerprint analysis
Oxidation indices
 
Description Not Available
Crude liver oil of leafscale gulper shark, Centrophorus squamosus was clarified by sequential degumming, decolorization
and vacuum deodorization. The refined oil was added with ethyl acetate extract of seaweeds and
various physiochemical parameters were evaluated in a time-reliant accelerated storage study. Significantly
greater induction time was observed for the oil supplemented with Sargassum wightii and Sargassum ilicifolium
(> 4.5 h) than other seaweed extracts and control oil (~1 h). Among different seaweeds, the ethylacetate extracts
of S. wightii maintained the oxidation indices of the refined oil below the marginal limits after the study
period. No significant reduction in C20–22 long chain fatty acids (1.19%) in the refined oil added with S. wightii
was apparent, and was comparable with the synthetic antioxidants (1.07–1.08%). Spectroscopic fingerprint
analysis of marker compounds responsible to cause rancidity signified the efficacy of S. wightii to arrest the
development of undesirable oxidation products in the refined oil during storage. The antioxidant compounds,
15-(but-19-enyl)-hexahydro-13,16-dimethyl-11-oxo-1H-isochromen-8-yl benzoate (1) and 10-(but-13-en-12-yl)-
5-((furan-3-yl)propyl)-dihydrofuran-9(3H)-one (2) isolated from S. wightii appeared to play a major role to deter
the oxidative degradation of refined oil thereby enhancing the storage stability.
Not Available
 
Date 2021-09-17T09:02:58Z
2021-09-17T09:02:58Z
2018
 
Type Article
 
Identifier Not Available
0963-9969
http://krishi.icar.gov.in/jspui/handle/123456789/64061
 
Language English
 
Relation Not Available
 
Publisher Not Available