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S. JIPA1,2, T. ZAHARESCU1,* , W. KAPPEL1, A. F. DĂNEŢ3, C. V. POPA3, M. BUMBAC2, L. M. GORGHIU2, A. M. MARIS4
The effect of high energy radiation (γ-rays) on rosemary plant extract activity is presented. The increase in the stabilization action of this natural extract was revealed by isothermal chemiluminescence procedure. The moderate dose applied to rosemary extract promoted significant growing in the total antioxidant activity and the improvement in the stabilization efficiency found in rosemary extract/paraffin system. The comparison between γ-irradiated rosemary extract (soon from irradiation and after 30 days of storage) and some commercial phenolic compounds (BHT and IONOX 100) regarding the progress of oxidative protection occurred in organic substrate has been emphasized the elevated protection in the radiation treatment promoted by natural antioxidant products. For the thermal oxidation of paraffin the improvement in the oxidation induction time of 4.8 times (additive concentration of 0.25 %) and of 10.8 times (additive concentration of 1.50 %) and the diminution by 1.35 to 3.25 times for the 0.25 % and 1.50 % respectively, of additive concentrations were obtained.
Rosemary, Antioxidant activity, Chemiluminescence.
S. JIPA, T. ZAHARESCU, W. KAPPEL, A. F. DĂNEŢ, C. V. POPA, M. BUMBAC, L. M. GORGHIU, A. M. MARIS, The effects of γ-irradiation on the antioxidant activity of rosemary extract, Optoelectronics and Advanced Materials - Rapid Communications, 3, 12, December 2009, pp.1315-1320 (2009).
Submitted at: Nov. 10, 2009
Accepted at: Nov. 23, 2009
Optoelectronics and Advanced Materials - Rapid Communications
(2023): 0.5 - 2023 Journal Citation Reports (Clarivate Analytics, 2024)
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