In vitro antioxidant and antimicrobial activity of some Lamiaceae species

ALBAYRAK S., Aksoy A., Albayrak S., SAĞDIÇ O.

IRANIAN JOURNAL OF SCIENCE AND TECHNOLOGY TRANSACTION A-SCIENCE, vol.37, no.A1, pp.1-9, 2013 (SCI-Expanded, Scopus) identifier identifier

  • Publication Type: Article / Article
  • Volume: 37 Issue: A1
  • Publication Date: 2013
  • Journal Name: IRANIAN JOURNAL OF SCIENCE AND TECHNOLOGY TRANSACTION A-SCIENCE
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.1-9
  • Keywords: Antimicrobial activity, antioxidant activity, DPPH, Lamiaceae, phenolics, PLANT-EXTRACTS, CAPACITY, HERBS, TEA, INFUSIONS, RADICALS, OREGANO, THYME, L.
  • Akdeniz University Affiliated: Yes

Abstract

The methanolic extracts, infusions, decoctions and hydrosols of six plants were investigated for their total phenolic contents, antioxidant and antimicrobial activities: Mentha piperita (Peppermint), Thymus vulgaris (thyme), Melissa officinalis (lemon balm), Ocimum basilicum (basil), Rosmarinus officinalis (rosemary) and Salvia officinalis (sage) (Lamiaceae). Total phenolic contents were determined by Folin-Ciocalteu procedure and ranged from 111.03 +/- 0.6 (sage methanolic extract) to 19.07 +/- 0.0 mg (basil methanolic extract) gallic acid equivalent /g extract. The antioxidant activity was evaluated by two methods, DPPH and phosphomolybdenum assays. The decoction of rosemary showed the highest DPPH radical scavenging activity (IC50 = 8.36 mu g/mL). The methanolic extract of Peppermint showed the highest total antioxidant activity (241.85 +/- 1.9 mg ascorbic acid equivalent /g extract) measured by phosphomolybdenum assay. The antimicrobial activities of herbs were tested against eight bacteria and two yeasts.