Antibacterial Activities of Essential Oils Extracted from Leaves of Murraya koenigii by Solvent-Free Microwave Extraction and Hydro-Distillation

Creative Commons License

Erkan N., Tao Z., Rupasinghe H. P. V., Uysal B., Oksal B. S.

NATURAL PRODUCT COMMUNICATIONS, cilt.7, sa.1, ss.121-124, 2012 (SCI-Expanded) identifier identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 7 Sayı: 1
  • Basım Tarihi: 2012
  • Doi Numarası: 10.1177/1934578x1200700139
  • Dergi Adı: NATURAL PRODUCT COMMUNICATIONS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.121-124
  • Anahtar Kelimeler: Murraya koenigii L., Curry leaf, Antibacterial activity, Listeria innocua, Microwave extraction, Hydro-distillation, ANTIMICROBIAL ACTIVITY, CARBAZOLE ALKALOIDS, LAURUS-NOBILIS, ANTIOXIDANT, HYDRODISTILLATION, HYDRODIFFUSION, GRAVITY, SPRENG, L.
  • Akdeniz Üniversitesi Adresli: Evet

Özet

Solvent-free microwave extraction (SFME) for the isolation of essential oil from leaves of Murraya koenigii L. (Rutaceae) has been compared with the conventional hydro-distilled oil (HD) in terms of yield, composition, antioxidant activity, and antibacterial activity against Listeria innocua. The yield of essential oil obtained from 30 min of SFME was similar to that of HD for 180 min. By GC-MS analysis, the major compounds of the essential oil extracted by SFME, which were obtained in somewhat lower amounts than in the essential oil obtained by HD, were alpha-copaene (44.3%), beta-gurjunene (25.5%), isocaryophyllene (12.1%), beta-caryophyllene (8.7%) and germacrene D (2.9%). The content of oxygenated terpenes, slightly higher for the SFME-essential oil (2.3%) than the HD-essential oil (1.4%), were much lower than that of nonoxygenated terpenes in both oils. DPPH radical scavenging activities of both essential oils were relatively low (10%-24%). Complete inhibition of growth of L. innocua was observed with both SFME and HD essential oils, at 400 and 600 mu g/mL (minimum inhibitory concentration), respectively. The SFME-essential oil at 300 mu g/mL provided 92% inhibition, indicating its potential as a natural antimicrobial agent.