SLANINA, Jiří, Hana PAULOVÁ, Otakar HUMPA, Hana BOCHOŘÁKOVÁ a Eva TÁBORSKÁ. 1,5-dicaffeoylquinic acid, an antioxidant component of Cynara cardunculus leaves. Scripta Medica (BRNO). Brno: Lékařská fakulta Masarykovy univerzity, 1999, roč. 72, č. 1, s. 9-17. ISSN 1211-3395. |
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@article{206431, author = {Slanina, Jiří and Paulová, Hana and Humpa, Otakar and Bochořáková, Hana and Táborská, Eva}, article_location = {Brno}, article_number = {1}, language = {eng}, issn = {1211-3395}, journal = {Scripta Medica (BRNO)}, title = {1,5-dicaffeoylquinic acid, an antioxidant component of Cynara cardunculus leaves}, volume = {72}, year = {1999} }
TY - JOUR ID - 206431 AU - Slanina, Jiří - Paulová, Hana - Humpa, Otakar - Bochořáková, Hana - Táborská, Eva PY - 1999 TI - 1,5-dicaffeoylquinic acid, an antioxidant component of Cynara cardunculus leaves JF - Scripta Medica (BRNO) VL - 72 IS - 1 SP - 9 EP - 9 PB - Lékařská fakulta Masarykovy univerzity SN - 12113395 N2 - This study describes the isolation, identification and some antioxidant properties of 1,5-dicaffeoylquinic acid. The title compound was isolated from the methanolic extract of the leaves of Cynara cardunculus. The isolation was based on the selective extraction of 1,5-dicaffeoylquinic acid with diethylether from weakly acidic water-methanolic solution and on column chromatography. Its structure was elucidated by 1D and 2D H-NMR spectroscopy. Inhibition of hemolysis induced by hydrogen peroxide and the antiradical effect of both 1,5-dicaffeoylquinic acid and cynarin (1,3-dicaffeoylquinic acid) were studied. Cynarin is formed from 1,5-dicaffeoylquinic acid by transesterification during the solvent extraction. Antioxidant activity of dicaffeoylquinic acids in both systems was stronger than that of ascorbic acid. ER -
SLANINA, Jiří, Hana PAULOVÁ, Otakar HUMPA, Hana BOCHOŘÁKOVÁ a Eva TÁBORSKÁ. 1,5-dicaffeoylquinic acid, an antioxidant component of Cynara cardunculus leaves. \textit{Scripta Medica (BRNO)}. Brno: Lékařská fakulta Masarykovy univerzity, 1999, roč.~72, č.~1, s.~9-17. ISSN~1211-3395.
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