Abstract

The antioxidant power of acetone oleoresin (AO), deodorized acetone extract (DAE) and methanol extract (ME) isolated from Moldavian dragonhead (Dracocephalum moldavica L.) leaves and flowering parts was tested in stripped corn oil and 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging system. The activity of ME or rosmarinic acid mixtures with α-tocopherol was also determined in corn oil. The results showed that methanol was a considerably more effective solvent to extract antioxidative substances from dragonhead than acetone. Dragonhead ME was efficient both in retarding corn oil peroxidation and in scavenging DPPH free radicals. The effectiveness of dragonhead AO isolated from the whole herb and DAE isolated from deodorized herb was significantly lower. Their activities were similar in DPPH radical scavenging, whereas DAE was more efficient in stripped corn oil than AO. Dragonhead ME was fractionated by thin

Description

ANTIOXIDANT PROPERTIES OF MOLDAVIAN DRAGONHEAD (DRACOCEPHALUM MOLDAVICA L.) - POVILAITYTé - 2007 - Journal of Food Lipids - Wiley Online Library

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