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Phenolic characterization of some hazelnut cultivars from different European germplasm collections

TitlePhenolic characterization of some hazelnut cultivars from different European germplasm collections
Publication TypeMonografia
Year of Publication2009
AuthorsSolar, A., Veberič R., Bacchetta Loretta, Botta R., Drogoudi P., Metzidakis I., Rovira M., Sarraquigne J.P., and Silva A.P.
Series TitleActa Horticulturae
Volume845
Number of Pages613 - 618
KeywordsCorylus avellana L., HPLC, Local germplasm, Phenolic compounds
Abstract

Some main national varieties or endangered old cultivars from six countries (13 from France, 12 from Greece, 10 from Italy, 6 from Portugal, 8 from Spain and 8 from Slovenia) were analysed for phenolic composition within the framework of the SAFENUT (Safeguard of hazelnut and almond genetic resources: from traditional uses to novel agroindustry opportunities) European project. Using a high-performance liquid chromatograph (HPLC) with a diode array (PDA) detector, the content of the phenolics was analyzed in extracts from the kernels. Gallic, chlorogenic, sinapic, p-coumaric, ferulic and ellagic acid, as well as epicatechin and rutin, were individually identified in all tested cultivars. Large variations of phenolic contents were noted between cultivars. Intercultivar variability was the most evident in sinapic, ellagic and p-coumaric acid, as well as in rutin. ’Casina’ from France had the highest sum (251.01 mg/kg) of all the identified phenolics. In contrast, ’Polycarpos’ from Greece, was the poorest with phenolics et al. (49,16 mg/kg). Ellagic acid, one of the most important polyphenolic antioxidants, appeared in concentrations between 0.56 mg/kg (’Polycarpos’, Greece) and 18.55 mg/kg (’Purpurea’, Portugal). On the chromatograms, two additional compounds were found, expressed as the equivalent of chlorogenic acid. They were the most abundant phenolics in all the studied cultivars. An improved method, MS-HPLC will be used next year with the aim of identifying them individually.

URLhttp://www.scopus.com/inward/record.url?eid=2-s2.0-75449113651&partnerID=40&md5=2f2aba7f796c7816ed2d199614c7c2ea
Citation Key246