Antifungal activity of five different essential oils in vapour phase for the control of Colletotrichum gloeosporioides and Lasiodiplodia theobromae in vitro and on mango |
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| Authors: | Anand Babu Perumal Periyar Selvam Sellamuthu Reshma B Nambiar Emmanuel Rotimi Sadiku |
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| Affiliation: | 1. Department of Food Process Engineering, School of Bioengineering, SRM University, Chennai, India;2. Department of Chemical, Metallurgical and Materials Engineering, Tshwane University of Technology, CSIR Campus, Lynnwoodridge, Republic of South Africa |
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| Abstract: | Mango fruit has high commercial value; however, major postharvest losses are encountered throughout the supply chain due to postharvest diseases. These results lead to the search for natural fungicide for postharvest diseases control. The antifungal effects of five essential oils (thyme, clove, cinnamon, anise and vitex) were assessed by disc volatilisation method. Thyme oil vapours at 5 μL per Petriplate, and clove and cinnamon oil at 8 μL per Petriplate showed 100% growth inhibition of mango pathogens in vitro. GC/MS analysis of essential oil showed thymol (23.88), o‐cymol (23.88) and terpinolene (23.88) as the major constituents of thyme oil. Clove and cinnamon oils contain 3‐allyl‐2‐methoxyphenol (37.42%) and benzofuran 3‐methyl (17.97%), respectively. Thyme oil as a fumigant at 66.7 μL L?1 showed a significant (P < 0.05) inhibition on postharvest pathogens of mango fruits stored at 25 °C for 6 days. Results of our study suggest the possibility of using thyme oil as an alternate natural fungicide to manage postharvest diseases in mango. |
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| Keywords: | Antimicrobial Agents Essential Oils Fruits Fumigants Fungicides GC/MS Mango Postharvest |
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