Bioactivity of Essential Oils from Leaves of Dryobalanops Lanceolata, Cinnamomum Burmannii, Cananga Odorata, and Scorodocarpus Borneensis

AbstractThis research aimed to examine the bioactivity of essential oils. The essential oils obtained from the leaves of Dryobalanops lanceolata, Cinnamomum burmannii, Cananga odorata, and Scorodocarpus borneensis by steam distillation method. This research used antioxidant and antimicrobial test. The antioxidant activity was assayed by DPPH (1,1-diphenyl-2-picryhydraziyl) and using ascorbic acid as positive control. The antimicrobial properties of the pure essential oils were determined using agar diffusion method. Two different microorganisms were used in this study were Staphylococcus aureus and Candida albicans. The zone of inhibition and activity index were measured and compared against a known synthetic standard. The yields of essential oils of D. lanceolata, C. burmannii, C. odorata and S. borneensis obtained in the present study were 0.12%, 1.01%, 0.04%, and 0.39%, respectively. The extracts inhibited all tested microorganism and susceptible against S. aureus . Only C. odorata has no inhibition against C. albicans. D. lanceolata and C. odorata have the largest inhibition zone against S. aureus (49.3 and 49 mm). The best inhibition zone was shown by the S. borneensis (52.7 mm) against C. albicans. The essential oils of D. lanceolata and C. burmannii also have potency to inhibit the free radicals at concentration 25 – 100 ppm