SCIENTIFIC WORKS OF THE LITHUANIAN INSTITUTE OF HORTICULTURE AND LITHUANIAN UNIVERSITY OF AGRICULTURE. SODININKYSTĖ IR DARŽININKYSTĖ. 2009. 28(3). Effect of essential oils on fungi isolated from apples and vegetables

The aim was to investigate the effects of volatile fraction of essential oils from Picea abies, Eucalyptus globulus, Rosmarinus officinalis and volatile fraction of Abies sibirica oil on fungi isolated from apple, leek, carrot, onion. Researches were made in 2008–2009. Tested fungi were as follows: Penicillium roqueforti, Aspergillus flavus, Aspergillus flavus var. oryzae, Mortierella hyalina var. hyaline, Sclerotinia sclerotiorum, Sporotrichum aurantiacum, Phoma exiqua, Clonostachys rosea f. catenulata. All parts of the plant from which fungi were isolated were injured by rot. Fungi of the tested species grew on the potato dextrose agar medium in different colonies, which grew at different speed. The oils were dripped on the covers of Petri dishes. There were three different variations taking the different portions of oil: 0.005, 0.01 and 0.015 ml. It was calculated the inhibitory activeness (R). Volatile fractions of all tested oils inhibited the growth of mycelium of all 8 species fungi. The inhibiting effect depended on: 1) the amount of oil, 2) the species of the plant, from which the oil was isolated, 3) the species of the tested fungi and 4) the incubation period.