期刊名称：Journal of Materials and Environmental Science
印刷版ISSN：2028-2508
出版年度：2014
卷号：5
期号：2
页码：490-497
出版社：University of Mohammed Premier Oujda
摘要：Phenolic compounds were extracted from olive leaves of Moroccan P icholine variety with aceto ne-water mixture. The extract was fractioned with diethyl ether and ethyl acetate solvents. The three fractions obtained (diethyl ether, ethyl acet ate and aqueous fractions) were characterized by HPLC/MS analyses. The results obtained showed that the diethyl ether fraction is characterized by ligstroside acid. Hydroxybezoic, hydroxyphenyl acetic, ferrulic acids and the flavonoids aglyco n such as quercetin and hesperitin were also detected. This fraction co ntained also methylated and/or hydroxylated secoiridoids derivatives. The ethyl acetate fraction is dominated b y hydroxyoleoside dimethyl ester and methoxyligstroside. The other phenolics found in this fraction were oleuropein, oleoside, ligstroside, ligstroside derivatives and verbascoside. The oleuropein was fo und under two isomers and four derivatives. The aqueous fraction is characterized by the oleuropein pentose. It contains secoiridoids, such as oleoside, ligstroside, oleuropein and oleuropein derivatives, and flavonoids mai nly quercetin and cyanidin glucose. According to these results, the Moroccan Picholine olive variety may be characterized by ligstroside acid and oleuropein pentose, which may be used as markers for olive oil and table olives labeling
