ISSN 2756-3685
International Journal of Enology and Viticulture ISSN: 2756-3685 Vol. 9 (2), pp. 001-005, February, 2022. © International Scholars Journals
Full Length Research Paper
Effects of different vegetable oils formulations on temperature tolerance and storage duration of Beauveria bassiana conidia
F. Lotfi Mola1* and R. Afkari2
1Department of biochemistry, Dezful Branch. Islamic Azad University, Dezful, Iran.
2Department of microbiology, Jahrom Branch, Young researchers, Isalamic Azad University, Jahrom, Iran.
Accepted 20 March, 2021
Abstract
The aim of this work was to evaluate the effects of different vegetable oil formulations on the temperature tolerance and storage duration of Beauveria bassiana conidia. The germination ability of conidia mixed with eight vegetable oils including rapeseed, soy, sesame, corn, coconut, grape, olive and almond oils, were evaluated for the conidia temperature tolerance at 25, 30, 35, 40 and 45°C by spreading conidia over Sabouraud dextrose agar (SDA). The germination ability of conidia mixed with eight vegetable oils was evaluated after 1, 2 and 3 week storage at 25°C by spreading over SDA. Results show that there was significant difference between tolerance of conidia to different vegetable oils formulation so that the highest and the lowest germinations were established for variants with Sesame and Olive oils formulation respectively. The highest germination was proved at 25°C. The germination ability was reduced gradually by increasing the storage duration so that the percent germination reduction were 33, 44 and 52 for first, second and third week of conidia storage, respectively. The Sesame and Olive oils formulation had the highest and the lowest effects on conidial storage respectively.
Key words: Vegetable oils, Beauveria bassiana, temperature tolerance.