title: In vitro antioxidant and in vivo photoprotective effect of pistachio (Pistacia vera L., variety Bronte) seed and skin extracts.
abstract: Pistachio (Pistacia vera L.) nuts are a rich source of phenolic compounds, known for their high antioxidant activity, and contained not only in the seeds but also in the skin. A pistachio cultivar of high quality is typical of Bronte, Sicily, Italy. The purpose of our study was to investigate the chemical composition and antioxidant properties of two polyphenol-rich extracts from skins (TP) and decorticated seeds (SP) of Bronte pistachios, and to verify the potential use of these extracts for topical photoprotective products. Chemical analysis showed that the TP and SP extracts contain high levels of phenolic compounds, but the TP extract is about ten times richer in phenols than the SP extract, being anthocyanins the most abundant compounds found in the TP extract. Both these extracts, and especially the TP extract, possess good radical scavenger/antioxidant properties, as shown in a series of in vitro assays carried out using homogenous and non-homogenous chemical environment. Furthermore both the TP extract and, although at a lower degree, the SP extract reduce, when topically applied, UV-B-induced skin erythema in human volunteers. These findings suggest that extracts from Bronte TP and SP could be successfully employed as photoprotective ingredients in topical cosmetic and pharmaceutical formulations.
authors: Department Farmaco-Biologico, Faculty of Pharmacy, University of Messina, Messina, Italy.
authors: Maria
authors: M
authors: Martorana
authors: Teresita
authors: T
authors: Arcoraci
authors: Luisa
authors: L
authors: Rizza
authors: Mariateresa
authors: M
authors: Cristani
authors: Francesco Paolo
authors: FP
authors: Bonina
authors: Antonina
authors: A
authors: Saija
authors: Domenico
authors: D
authors: Trombetta
authors: Antonio
authors: A
authors: Tomaino
mesh_terms: D000279:Administration, Cutaneous; D000328:Adult; D000975:Antioxidants / Q000032:analysis* / Q000627:therapeutic use; D004890:Erythema / Q000188:drug therapy*; D006801:Humans; D008517:Phytotherapy; D027927:Pistacia / Q000737:chemistry*; D010936:Plant Extracts / Q000627:therapeutic use*; D012639:Seeds / Q000737:chemistry; D012867:Skin / Q000528:radiation effects; D024505:Tocopherols; D014466:Ultraviolet Rays
chemical_list: D000975:Antioxidants; D010936:Plant Extracts; D024505:Tocopherols