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Title

Optimization of antioxidants extraction from peanut skin to prevent oxidative processes during soybean oil storage

AuthorsFranco, Daniel ; Rodríguez-Amado, I. ; Agregán, Rubén; Munekata, Paulo E. S.; Vázquez, José Antonio ; Barba, Francisco J.; Lorenzo, José M.
KeywordsSoybean oil
Ethanol solvent
Polyphenols
Primary and secondary oxidation
In vitro antioxidant methods
Issue Date2018
PublisherElsevier
CitationLWT - Food Science and Technology 88: 1-8 (2018)
AbstractThe aim of this study was to determine the antioxidant efficacy of peanut skin extracts (PSE) to prevent the oxidative processes of soybean oil during storage and to compare the results with those obtained after using a positive control with butylated hydroxytoluene (BHT) under accelerated oxidation conditions (16 d at 60 °C). Progress in lipid oxidation of soybean oil was followed by chemical indices (peroxide value, p-anisidine value, and conjugated dienes) at the end of the storage. A second goal was to achieve the optimal conditions for the extraction of antioxidant molecules from peanut skin using response surface methodology. At level of 750 mg/kg of PSE, primary and secondary oxidation inhibition was equivalent to the obtained with BHT, hence our results revealed PSE as an effective antioxidant for the stabilization of soybean oil. The best conditions for the recovery of antioxidant compounds were dependent on the variables measured but, in general, concentration of ethanol (73.9%) and temperature of 66.5 °C maximized the responses and the recovery of activities was not significantly influenced by extracting time
Description8 páginas, 3 figuras, 2 tablas
Publisher version (URL)https://doi.org/10.1016/j.lwt.2017.09.027
URIhttp://hdl.handle.net/10261/156488
DOIhttp://dx.doi.org/10.1016/j.lwt.2017.09.027
ISSN0023-6438
Appears in Collections:(IIM) Artículos
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