Bioactive compounds of a wheat bran oily extract obtained with supercritical carbon dioxide
2020
Rebolleda Alonso, Sara | González San José, Mª Luisa | Sanz Díez, Mª Teresa | Beltrán Calvo, Sagrario | García Solaesa, Ángela
A wheat bran oily extract obtained with supercritical carbon dioxide at 25.0 0.1 MPa and 40 2 C has been analyzed in order to determine some valuable bioactive compounds as alkylresorcinols, -linolenic acid, steryl ferulates, tocopherols and phenolic compounds, which levels were around 47, 37, 18, 7 and 0.025 mg/g oily extract, respectively. To our knowledge, this is the first time that the presence of steryl ferulates has been observed in a supercritical fluid extract of wheat bran and that -tocopherol has been described in wheat bran oily extracts. Other common quality parameters, directly correlated with oxidative degradation, were also evaluated. Acidity values around 15% oleic acid were detected, while low levels of hydroperoxides (around 2.4 meq O2/kg) and very low levels of hexanal (0.21 ppb) were found. Composition of the wheat bran oily extract was stable during 155 days of storage at 21 C and darkness, and only a slight decrease in alkylresorcinols and tocopherols contents (13% and 20%, respectively) was observed. These results indicated an attractive potential of the obtained oily extract for industrial applications as food ingredients, nutraceuticals, and others.
Mostrar más [+] Menos [-]HASENOSA grant number ITC-20113029 and by the Junta de Castilla y León (JCyL) and the European Regional Development Fund (ERDF) grant number BU301P18. The APC was funded by JCyL and ERDF grant number BU301P18.
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