Anti-oxidative Potential and Biocompounds of Five Lamiaceae Family Herbal Species

Abstract:

The present study was designed to evaluate the antioxidants compound and activities in Salvia officinalis, Mentha spicata, Lavandula angustifolia, Satureja hortensis and Origanum vulgare methanol extracts. Antioxidant activities of plant extracts were assessed using 1,1-diphenyl-2-picrylhydrazyl (DPPH) and ability to reduce Fe³⁺ to Fe²⁺ assay. Free radical scavenging activity of S. officinalis was recorded as high as 90.1 % followed by L.angustifolia (88.7 %) at 300 µg/ml. This value was found close to the activity of synthetic antioxidant, butylated hydroxytoluene (BHT) (94.0 %) at the same concentration. In this study, Salvia officinalis and L. angustifolia had higher total phenolic contents (21.7 ± 1.18 and 19.2 ± 1.06 mg GA/100 g DW) whereas S. officinalis had the largest flavonoid contents (4.8 ± 0.12 mg CE / 100 g DW). Results showed strong correlation between antioxidant activity and carotenoids content (r=0.82), phenolic compounds (r= 0.92), vitamin C (r= 0.81), vitamin E (r= 0.79) and tannins content (r= 0.81). It can be concluded from the current results that antioxidative potency of L. angustifolia and S. officinalis is attributed to the presence of higher contents of biocompound like carotenoids, phenolics, vitamins and flavonoids.

Key words::

• Carotenoid
• phenolic compounds
• vitamin
• tannins
• flavonoid