Plant oil having high lauric acid content with antioxidant activity and preparation method thereof

Abstract

The present invention relates to the technical field of plant extraction technologies, and in particular, to a plant oil having high lauric acid content with antioxidant activity and a preparation method thereof. Cinnamon seeds are dried, shelled, and pulverized to obtain cinnamon seed kernel powder; the cinnamon seed kernel powder and a lipophilic organic solvent are then mixed and subjected to ultrasonic extraction to obtain an extract; and the extract is subjected to reduced-pressure distillation to recover the solvent, thereby obtaining a plant oil having high lauric acid content with antioxidant activity. The plant oil of the present invention is mainly composed of six fatty acids, namely capric acid, lauric acid, myristic acid, palmitic acid, oleic acid, and linoleic acid; among the six fatty acids, lauric acid has the highest relative percentage content, ranging from 55.55% to 68.63%; moreover, the prepared plant oil has antioxidant activity, with an IC50 value for DPPH free radicals of 2.28-6.70 mg / mL and an IC50 value for ABTS free radicals of 4.10-8.88 mg / mL.