Olea europaea L. leaf extract and derivatives: antioxidant properties - PubMed (original) (raw)

. 2002 Aug 14;50(17):4934-40.

doi: 10.1021/jf025540p.

Affiliations

• PMID: 12166985
• DOI: 10.1021/jf025540p

Olea europaea L. leaf extract and derivatives: antioxidant properties

Raffaella Briante et al. J Agric Food Chem. 2002.

Abstract

This paper reports a very simple and fast method to collect eluates with high amounts of hydroxytyrosol, biotransforming Olea europaea L. leaf extract by a thermophilic beta-glycosidase immobilized on chitosan. Some phenolic compounds in the leaf tissue and in the eluates obtained by biotransformation are identified. To propose the eluates as natural substances from a vegetal source, their antioxidant properties have been compared with those of the leaf extract from which they are originated. The eluates possess a higher concentration of simple phenols, characterized by a stronger antioxidant capacity, than those available in extra virgin olive oils and in many tablets of olive leaf extracts, commercially found as dietetic products and food integrators.

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