Abstract
The aim of the present study was to assess the impacts of roasting and the type of extraction solvent (ethanol or water) on the hypolipidemic activity of xoconostle fruit peel extracts in a tyloxapol-induced model of hyperlipidemia. Water and ethanol extracts from raw and roasted Opuntia joconostle peels were obtained to quantify the phytochemicals contained within and assess their hypolipidemic activity in rats (n=5) against tyloxapol-induced dyslipidemia (400 mg/kg). The raw ethanol and water extracts, as well as the roasted water extract (200 mg/kg), showed hypolipidemic activity in the tyloxapol-treated group (p<0.05). In contrast, the roasted sample extracted with ethanol did not show this effect. The concentrations of phenolic compounds (39.80 mg GAE/g) and flavonoids (16.42 ±0.14 mg QE/g) were higher in the ethanolic extracts than in the aqueous extracts. Conversely, the concentration of betalains (115.51 ±1.66 mg/100 g) was higher in the water extracts than in the ethanol extracts. It was concluded that the roasting process modified the concentration of some phytochemicals and their antioxidant capacity in vitro, producing a hypolipidemic effect in tyloxapol-induced hyperlipidemic rats.
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