Open AccessPhysico-chemical characteristics and oxidative stability of oils from different Peruvian castor bean ecotypes
Author(s) -
L. Huamán,
S. Huincho,
Elza Aguirre,
Gilbert Rodríguez,
Andrea Brandolini,
Alyssa Hidalgo
Publication year - 2022
Publication title -
grasas y aceites
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.384
H-Index - 46
eISSN - 1988-4214
pISSN - 0017-3495
DOI - 10.3989/gya.1016202
Subject(s) - ecotype , shelf life , chemistry , extraction (chemistry) , food science , antioxidant , chemical composition , castor oil , botany , biology , biochemistry , organic chemistry
The aim of this research was to assess the physico-chemical properties and shelf-life of oils press-extracted at two temperatures (60 °C and 80 °C) from five Peruvian castor bean ecotypes. A wide variation for all traits was observed. Low acidity index, low peroxide index and absence of p-anisidine were recorded. The total tocopherol contents ranged from 798 to 1040 mg/kg. A higher antioxidant capacity was detected in methanolic extracts than in hexane extract. From the Rancimat performed at 150-170 °C, the predicted shelf-life at 25 °C ranged from 0.15 to 8.93 years; the higher extraction temperature led to a longer shelf-life, probably because of enzyme inactivation.