ENIVRONMENT ASIA

Volume 11, No. 03, Month SEPTEMBER, Year 2018, Pages 161 - 169

Antimicrobial activity of wood vinegar from dimocarpus longan

Ekachai Chukeatirote and Nareerat Jenjai

Abstract Download PDF

The antimicrobial activity of wood vinegar from Dimocarpus longan was determined in this study. For this, the antimicrobial activity was evaluated against 14 bacterial and 6 fungal strains using an agar well diffusion assay. It was observed that the longan wood vinegar exhibited antibacterial activity against all bacterial strains tested. However, the wood vinegar only showed an inhibitory activity against one fungus which was the yeast Candida albicans. In addition, a preliminary characterisation of the chemical compositions of the longan wood vinegar was made by gas chromatography-mass spectrometry (GC-MS). A total of 6 chemical compounds were identified, representing ca. 60% of the compositions in the wood vinegar. Three major components including 9-octadecenoic acid (oleic acid, 24.56%), n-hexadecanoic acid (palmitic acid, 24.33%), and tetradecanoic acid (myristic acid, 7.16%), were found in the wood vinegar.

Keywords

Antibacterial activity; Dimocarpus longan; Longan; Pyroligneous acid; Wood vinegar

---