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Effect of some local plant extracts on fatty acid composition of fish () during smoking and sun drying in the Far-North region of Cameroon. | LitMetric

The objective of this study was to assess the antioxidant activities of three plant extracts ( leaves, fruits, and leaves) and to evaluate their effects on the preservation of fish polyunsaturated fatty acids (PUFAs) during smoking and sun-drying processes. PUFAs are highly prone to oxidation during fish processing. The plant extracts were analyzed for their polyphenol contents and were evaluated for their total antiradical capacity. The polyphenol components of each plant were characterized. The hydroethanolic and aqueous extracts were added to the fish at concentrations of 3, 6, 9, and 12 g/L and 10, 20, 30, and 40 g/L, respectively. Butylated hydroxytoluene (BHT) was used as a positive control at a concentration of 2 g/L to compare the antioxidant effects of the plant extracts. The treated fish was subjected to smoking or sun drying and the fatty acid composition of the fish lipid extract was assessed. The results showed that the total polyphenolic, flavonoid, and tannin contents varied significantly from one plant extract to the other ( < .05). The radical scavenging and FRAP increased significantly with the concentration of the plant extracts ( < .05). An HPLC analysis of the extracts led to the preliminary identification of four hydroxycinnamic acids in and , one anthocyanin and one flavone glycoside in , and four flavan-3-ols in . Moreover, eight flavonols were preliminarily identified in the three plants. Compared to the control product, these plant extracts significantly protected fish PUFAs from oxidation ( < .05). The aqueous extract of at 40 g/L better preserved omega-3 in fish during smoking and sun drying than the control product. Incorporating the three plant extracts during smoking and sun-drying processes can effectively preserve the PUFAs in fish. Therefore, these plants are viable sources of natural antioxidants in the preservation of fish products.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10494655PMC
http://dx.doi.org/10.1002/fsn3.3636DOI Listing

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