Oxidative stability and proximate composition of silver cyprinid (Rastrineobola argentea) used for fishmeal in East Africa

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dc.contributor.authorKawooya Kubiriza, Godfrey
dc.contributor.authorSsempijja, Drake
dc.contributor.authorMubiru, Edward
dc.contributor.authorSemwanga, Nathan
dc.contributor.authorOdoli, Cyprian O.
dc.contributor.authorZalwango, Julliet
dc.contributor.authorMasette, Margaret
dc.date.accessioned2023-06-23T17:42:03Z
dc.date.available2023-06-23T17:42:03Z
dc.date.issued2021
dc.description.abstractFishmeal and oils used for feed formulation contain polyunsaturated fatty acids (PUFAs) that are easily oxidized, and affect farmed fish. In this study, the effects of season (dry orwet), drying methods (i.e., artisanal: bare ground, rock surface,meshes laid on the ground or raised racks or adopted), aswell as storage time on Rastrineobola argentea used for fishmeal in East Africa were examined. Lipid oxidation and proximate composition stability were determined at 30-day intervals over a period of 90 days. Lipid oxidation stability was monitored by determining free fatty acids (FFA), peroxide value (PV) and thiobarbituric acid-reactive substances (TBARs). Changes in proximate composition were based on moisture, ash, crude protein (CP), crude fat (EE), and gross energy (GE). The relationships among lipid oxidation and proximate composition parameters were also explored. Considerable oxidative rancidity reflected by significantly high levels of FFA, PV, and TBARs in dried R. argenteawas recorded in thewet than in the dry season.Drying of R. argentea on bare ground andmeshes laid on the ground led to higher lipid oxidation than drying on raised racks. Lipid oxidation was also significantly higher in salted and indirectly dried R. argentea than in the unsalted and directly dried samples. Dry matter tended to decrease with storage time, as ash was high in salted samples and those dried on bare ground. There was a general decrease in EE content with storage time that coincided with peroxidation. However, CP and GE were less affected by season, processing methods and storage time. Drying R. argentea on raised racks was the best among the processing method investigated.en_US
dc.identifier.citationGodfrey Kawooya Kubiriza, Drake Ssempijja, Edward Mubiru, Nathan Semwanga, Cyprian O. Odoli, Julliet Zalwango & Margaret Masette (2021) Oxidative stability and proximate composition of silver cyprinid (Rastrineobola argentea) used for fishmeal in East Africa, Journal of Applied Aquaculture, 33:3, 246-266, DOI: 10.1080/10454438.2020.1727808en_US
dc.identifier.urihttps://doi.org/10.1080/10454438.2020.1727808
dc.identifier.urihttps://nru.uncst.go.ug/handle/123456789/8981
dc.language.isoenen_US
dc.publisherJournal of Applied Aquacultureen_US
dc.subjectLipid oxidationprocessing methodsen_US
dc.subjectProximate compositionen_US
dc.subjectRastrineobola argenteaen_US
dc.subjectSeasonalityen_US
dc.subjectStorage timeen_US
dc.titleOxidative stability and proximate composition of silver cyprinid (Rastrineobola argentea) used for fishmeal in East Africaen_US
dc.typeArticleen_US
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