Antifungal activity of Rubus ulmifolius Schott standardized in vitro culture

Vegetables of Rubus species are known to have antimicrobial properties mainly due to its high content in phenolic compounds. Among the 37 potentially pathogenic fungi screened with crude methanolic extract from micropropagated shoots of Rubus ulmifolius Schott, we show that the 70% of the species resulted variably sensitive to methanolic extract. Of the phenolic fractions obtained from the crude methanolic extract by hydrophobic interaction chromatography, those rich in tannins resulted active against the fungal strains tested, whereas those containing chlorogenic, caftaric acid and caffeoyl derivatives resulted partially effective. Our results suggest a potential utilization of the in vitro plant cultures of R. ulmifolius to provide standardized extracts from plant material grown in uniform conditions and available year round. which could be useful as natural antifungal agents. (c) 2007 Swiss Society of Food Science and Technology. Published by Elsevier Ltd. All rights reserved.