Antifungal activity screening for mint and thyme essential oils against Rhizopus stolonifer and their application in postharvest preservation of strawberry and peach fruits

This study aimed to evaluate the fungicidal effect of eight essential oils against five strains of the genus Rhizopus. Strains were obtained from various moldy foods, namely Rhizopus stolonifer KMi 383 from chestnut, R. stolonifer KMi 510 from strawberry, R. stolonifer KMi 511 from nectarine, R. stolonifer KMi 524 from cherry tomatoes, and R. lyococcus KMi 512 from blackberry. The essential oils (EO) used in this study were jasmine EO (extract from Jasminum officinale L.), bergamot EO (Mentha aquatica L. var. citrata (Her.) Fresen), bitter orange EO (from Citrus aurantium L.), grapefruit EO (Citrus paradisi Macfady), sweet flag EO (East Asian Calamus, from Acorus calamus L. var. angustatus Bes), star anise EO (from Illicium verum J.D.Hook), geranium EO (from Pelargonium graveolens), and lemongrass EO (from Cymbopogon citratus DC). The semi-quantitative composition of the essential oil samples was determined by gas chromatography coupled with mass spectrometry (GC-MS). The antifungal activity of essential oils against the strains of R. stolonifer and R. lyococcus was determined during 7 days, using the micro-atmosphere method (0.625 μL.mL-1 of air). Two essential oils, geranium and lemongrass, completely inhibited the growth of all isolates. Bitter orange essential oil inhibited the growth of all isolates of Rhizopus stolonifer, but isolate of Rhizopus lyococcus began to grow after four days of cultivation. In conclusion, certain essential oils are highly effective in the vapor phase. These could be used in further tests of their antifungal activity and could be used in the control of Rhizopus spp. or other fungal pathogens.

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In vitro antifungal activity and GC/MS profiling of ten selected Sudanese essential oils against Madurella mycetomatis, the causative agent of black-grain mycetoma

Planta Medica ◽

10.1055/s-0035-1565722 ◽

2015 ◽

Vol 81 (16) ◽

Author(s):

SA Khalid ◽

K Veres ◽

J Hohmann ◽

ME Elamin ◽

S Abd Algaffar

Keyword(s):

Antifungal Activity ◽

Essential Oils ◽

Causative Agent ◽

Madurella Mycetomatis ◽

In Vitro Antifungal Activity

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Antifungal activity analysis of 3 essential oils (thyme, ajwainand orange) on candida albicans

International Journal of Current Advanced Research ◽

10.24327/ijcar.2017.2950.0150 ◽

2017 ◽

Vol 6 (3) ◽

pp. 2948-2950

Author(s):

Vaishnavi Sivakali Subramanian ◽

◽

R.V Geetha ◽

Anitha Roy ◽

◽

...

Keyword(s):

Candida Albicans ◽

Antifungal Activity ◽

Essential Oils ◽

Activity Analysis

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Antifungal activity of Pelargonium graveolens essential oils from different geographical locations against Candida albicans

Agriculture and Natural Resources ◽

10.34044/j.anres.2019.53.2.08 ◽

2019 ◽

Keyword(s):

Candida Albicans ◽

Antifungal Activity ◽

Essential Oils ◽

Pelargonium Graveolens ◽

Geographical Locations

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Chemical composition and antifungal activity of essential oils and their combinations against Botrytis cinerea in strawberries

Journal of Food Measurement & Characterization ◽

10.1007/s11694-020-00765-x ◽

2021 ◽

Author(s):

Josemar Gonçalves de Oliveira Filho ◽

Guilherme da Cruz Silva ◽

Aline Cristina de Aguiar ◽

Lavinia Cipriano ◽

Henriette Monteiro Cordeiro de Azeredo ◽

...

Keyword(s):

Chemical Composition ◽

Antifungal Activity ◽

Essential Oils ◽

Botrytis Cinerea

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Nanoencapsulated Essential Oils with Enhanced Antifungal Activity for Potential Application on Agri-Food, Material and Environmental Fields

Antibiotics ◽

10.3390/antibiotics10010031 ◽

2021 ◽

Vol 10 (1) ◽

pp. 31

Author(s):

Magdaléna Kapustová ◽

Giuseppe Granata ◽

Edoardo Napoli ◽

Andrea Puškárová ◽

Mária Bučková ◽

...

Keyword(s):

Antifungal Activity ◽

Essential Oil ◽

Essential Oils ◽

Winning Strategy ◽

Colloidal Suspensions ◽

Fungal Species ◽

Natural Environments ◽

Food Material ◽

Minimum Fungicidal Concentration ◽

Fungal Strains

Nanotechnology is a new frontier of this century that finds applications in various fields of science with important effects on our life and on the environment. Nanoencapsulation of bioactive compounds is a promising topic of nanotechnology. The excessive use of synthetic compounds with antifungal activity has led to the selection of resistant fungal species. In this context, the use of plant essential oils (EOs) with antifungal activity encapsulated in ecofriendly nanosystems could be a new and winning strategy to overcome the problem. We prepared nanoencapsules containing the essential oils of Origanum vulgare (OV) and Thymus capitatus (TC) by the nanoprecipitation method. The colloidal suspensions were characterized for size, polydispersity index (PDI), zeta potential, efficiency of encapsulation (EE) and loading capacity (LC). Finally, the essential oil nanosuspensions were assayed against a panel of fourteen fungal strains belonging to the Ascomycota and Basidiomycota phyla. Our results show that the nanosystems containing thyme and oregano essential oils were active against various fungal strains from natural environments and materials. In particular, the minimum inhibitory concentration (MIC) and minimum fungicidal concentration (MFC) values were two to four times lower than the pure essential oils. The aqueous, ecofriendly essential oil nanosuspensions with broad-spectrum antifungal activity could be a valid alternative to synthetic products, finding interesting applications in the agri-food and environmental fields.

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