Tannins, flavonoids and stilbenes in extracts of African savanna woodland trees Terminalia brownii, Terminalia laxiflora and Anogeissus leiocarpus showing promising antibacterial potential

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• 作者：E.Y.A. Salih^a ; ^b ; ¹ ; ^{enass.salih@helsinki.fi} ; ^{eyabdelkareem@uofk.edu} ; M. Kanninen^b ; M. Sipi^b ; O. Luukkanen^b ; R. Hiltunen^a ; H. Vuorela^a ; R. Julkunen-Tiitto^c ; P. Fyhrquist^a ; ^{pia.fyhrquist@helsinki.fi}
• 关键词：IZ ; inhibition zone ; CFU/ml ; colony forming units/ml
• 刊名：South African Journal of Botany
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：108
• 期：Complete
• 页码：370-386
• 全文大小：1299 K
• 卷排序：108

文摘

Polar extracts of Terminalia brownii, T. laxiflora and Anogeissus leiocarpus gave significant antibacterial effects. Several unknown ellagitannins along with corilagin, punicalagin and methyl-flavogallonate were found in the Terminalia spp. Ampelopsin, aromadendrin, taxifolin, pinosylvin and methylpinosylvin were found in A. leiocarpus roots for the first time. Gallic and ellagic acid and punicalagin, present in the extracts of some species gave higher MIC values than the extracts. A methyl-flavogallonate enriched Sephadex LH-20 fraction of T. brownii gave higher MIC values compared to the extracts.