Detection and identification of antibacterial compounds in fungi isolated from Avicennia alba

Abstract

Marine fungi have been proven to become one of the important sources of novel secondary metabolites, and are expected to compete with terrestrial fungi in this respect in the near future. However, only a few investigations of the secondary metabolites of marine fungi have been reported. Therefore, this study was focused on the detection and identification of potential bioactive compounds of marine fungi isolated from Avicennia alba. Four fungi have been successfully identified as marine fungi: Clavariopsis bulbosa, Humicola alopallonella, Coniothyrium obiones and Didymella avicenniae. All fungi were further screened for antibacterial properties against five bacterial test strains: Escherichia coli, Salmonella sp., Klebsiella sp., Pseudomonas sp. and Streptococcus. agalactiae. D. avicenniae showed the best antibacterial activity and the least is C. bulbosa.