Vasiliki Lagouri - A comparison of the antioxidant activity and phenolic content of non-polar and polar extracts obtained from four endemic Lamiaceae species grown in Greece

Document created by Vasiliki Lagouri on Aug 22, 2014
Version 1Show Document
  • View in full screen mode

  Publication Details (including relevant citation   information):

  Lagouri V., Mpantouna A. and Stathopoulos P.   (2010):  J. Food Process. Pres. (34), 872-886


  This study was designed to compare the phenolic content and   antioxidant properties of non-polar and polar fractions of   Origanum onites, O. dictamnus, Thymus vulgaris and Rosmarinus   officinalis that are grown in the same region (Crete, Greece). In   the b-carotene/linoleic acid system the hexane extracts showed   higher antioxidant activity (P < 0.05) than methanol and

  dichoromethane extracts did (mean value: 73.53, 52.79 and 33.5%,   respectively). Oregano exhibited stronger antioxidant activity (P   < 0.05) than rosemary, thyme and dittany. The dichloromethane   and methanol extracts appeared to have a higher radical   scavenging activity (P < 0.05) than the hexane extracts (mean   50% inhibition value: 1.62, 1.21 and 7.71, respectively). The   dichloromethane extracts showed strong inhibition in the corn oil   oxidation (up to 81.1%), which is higher when compared with that   of butylated hydroxytoluene (42.07%). Rosemary was a stronger   inhibitor in the oil oxidation (P < 0.05) than oregano, thyme   and dittany. High and positive correlations were observed between   the total flavonoids of the methanol plant

  extracts and their antioxidant activity in all the three assays.

  Address (URL): http://