Lipid and fatty acid profiles of Castanea sativa Mill. Chestnuts of 17 native Portuguese cultivars

摘要: In recent years, chestnuts have increasingly become important in human nutrition because of their nutrient contents and potential beneficial health effects. Portugal, Tras-os-Montes e Alto Douro is the most region for chestnut production, generating 85% total national output. 1994, three protected designation origin (PDO) areas were created: Terra Fria, Soutos da Lapa, Padrela within jurisdiction area Regional Agricultural Services Region. Seventeen cultivars selected from these PDO to evaluate crude fat content fatty acid (FA) composition over a period 2 years. Total extraction was performed according AOAC methodology, using Soxhlet apparatus 16 h. Petroleum ether used FAs identified quantified by gas chromatography. The studied confirm that low content, saturated acids (SFA) (17%) high unsaturated (USFA) (83%). major are linoleic, oleic palmitic; accounted more than FA content. From results two potentially health-beneficial identified: cv. Lada, with linoleic Aveleira, higher USFA With respect profiles regions, consistently contained highest level acid. variation detected among may reflect differences genotype influenced environmental growing conditions. Longal chestnuts, only traditional on different areas, had better nutritional qualities which ecological conditions where orchards established influences nut quality.