Research progress on extraction,nutritional composition and health benefit of pomegranate seed oil
Pomegranate seed oil is a functional vegetable oil extracted from pomegranate seed,the byproduct of pomegranate processing.It has promising antioxidant,anti-inflammatory,anti-tumoral,and prevention of cardiovas-cular diseases activities.In this article,the research results of pomegranate seed oil at home and abroad in recent years were comprehensively reviewed from the aspects of the extraction method,nutritional composition,and health benefit of pomegranate seed oil.Aqueous enzymatic method,solvent extraction method,supercritical fluid extraction method and physics-assisted extraction method had significant influences on the yield and fatty acid composition.Although there were differences in the fatty acid composition of pomegranate seed oil from different origins and dif-ferent extraction methods,overall,the proportion of unsaturated fatty acids in pomegranate seed oil reached 88.57%-95.33%.The unsaturated fatty acids were dominated by punicic acids(60.62%-81.40%).They were the main bio-active ingredients of pomegranate seed oil which could exert various nutritional effects.Therefore,pomegranate seed oil is a woody vegetable oil with high nutritional value and potential utilization value.This paper aims to provide a theoretical reference for further research on pomegranate seed oil and its development,and its utilization in food,biomedicine and other fields.
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