Nepetalactone content in shoot cultures of three endemic Nepeta species and the evaluation of their antimicrobial activity
Autori:Nestorović, Jasmina M
Ćirić, Ana D.
Maksimović, Vuk M
Grubišić, Dragoljub V.
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Rapid micropropagation of Nepeta rtanjensis, N. sibirica and N. nervosa was performed. Qualitative and quantitative nepetalactone content in methanol extracts of in vitro grown plants was analysed by reverse-phase HPLC coupled with UV and MS detection. Only trans,cis-nepetalactone was detected in shoots of N. rtanjensis, while cis,trans-nepetalactone stereoisomer was present in N. sibirica. No nepetalactone was observed in shoots of N. nervosa. The antimicrobial activity of methanol extracts, against eight bacterial and eight fungal species, was evaluated. All the tested extracts showed significant antibacterial and strong antifungal activity. However, N. rtanjensis extract exhibited the best antimicrobial potential. (C) 2010 Elsevier B.V. All rights reserved.
Izvor:Fitoterapia, 2010, 81, 6, 1-626