Vapour phase antifungal activity of essential oils and their raw materials against Aspergillus sp., Curvularia lunata, and Fusarium sacchari

A. Ahebwa, R. Mongkol, M. Kanjanamaneesathian
Volatile oils from plants can be effective biofungicides to suppress deleterious microorganisms. This study aimed at determining the efficacy of volatile oils from raw plant materials and essential oils (EOs) of clove (Syzygium aromaticum) and makrut lime (Citrus hystrix) to the growth of Aspergillus sp., Curvularia lunata, and Fusarium sacchari. In the first screening test using raw plant materials from clove and makrut lime, clove powder at 0.25, 0.5 and 1 g completely inhibited mycelial growth of all the tested fungi, whilst makrut lime peel only at 1 g was more effective than at 0.25 and 0.5 g in suppressing the mycelial growth of all fungi. Aspergillus sp. was the most sensitive to the volatile oils from makrut lime peel, followed by F. sacchari and C. lunata. In the second screening test using essential oils extracted, by hydro-distillation from clove and makrut lime, volatile oils from clove oil at 5 µL was efficient in suppressing Aspergillus sp. and C. lunata but less effective against F. sacchari at all concentrations, whilst volatile oils from makrut lime oil at 10 µL was effective in inhibiting the mycelial growth of all pathogens. Makrut lime oil at 10 and 20 µL completely inhibited the mycelial growth of C. lunata. The volatile oils from clove and makrut lime have potential to suppress the growth of Aspergillus sp., C. lunata and F. sacchari. Further research is needed to determine how these volatile oils should be used in real settings.
Ahebwa, A., Mongkol, R. and Kanjanamaneesathian, M. (2020). Vapour phase antifungal activity of essential oils and their raw materials against Aspergillus sp., Curvularia lunata, and Fusarium sacchari. Acta Hortic. 1298, 383-390
DOI: 10.17660/ActaHortic.2020.1298.53
https://doi.org/10.17660/ActaHortic.2020.1298.53
biofungicides, makrut lime (Citrus hystrix), fungal pathogens, clove (Syzygium aromaticum), volatile oils
English

Acta Horticulturae