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Scavenger capacity of natural phenolics in some selected labiatae herbs

S. JIPA1, T. ZAHARESCU2,* , W. KAPPEL2, C. DUMITRESCU1, M. MARIŞ3, A. MANTSCH2, M. LUNGULESCU2

Affiliation

  1. “Valahia” University of Targoviste, 18-22 Unirii Av., Targoviste 130082, Romania
  2. INDCIE ICPE CA, 313 Splaiul Unirii, P. O. Box 149, Bucharest 030138, Romania
  3. “Ovidius” University, Faculty of Dental Medicine, 7 Ilarie Horonca St., Constantza 900684, Romania

Abstract

The scavenging capacity of several labiatae plant extracts in thermal oxidation of paraffin was investigated. The stabilization activity was determined by isothermal chemiluminescence. The studied extracts produced large increase in the oxidation induction time (55 times for sage, 36 times for rosemary, 20 times for wild thyme and 14 times for oregano) in respect with neat paraffin. Other characteristics such as half time oxidation and oxidation rate are significantly improved.

Keywords

Labiatae herbs, Phenolics, Antioxidants, Chemiluminescence.

Citation

S. JIPA, T. ZAHARESCU, W. KAPPEL, C. DUMITRESCU, M. MARIŞ, A. MANTSCH, M. LUNGULESCU, Scavenger capacity of natural phenolics in some selected labiatae herbs, Optoelectronics and Advanced Materials - Rapid Communications, 2, 10, October 2008, pp.669-673 (2008).

Submitted at: July 2, 2008

Accepted at: Oct. 2, 2008