ISSN 2736-1624
Frontiers of Agriculture and Food Technology ISSN: 2736-1624 Vol. 13 (1), pp. 001-004, January, 2023. © International Scholars Journals
Full Length Research Paper
Four strains of yeasts: as effective biocontrol agents against both growth and mycotoxins formation by selected 11 toxigenic fungi
Zohri, A. A1 and Marwa Abdel-Kareem, M2
1Botany & Microbiology Department, Faculty of Science, Assiut University, Egypt.
2Botany Department, Faculty of Science, Sohag University, Egypt.
Accepted 16 December, 2022
Abstract
Spoilage and poisoning of foods by fungi is a major problem, especially in developing countries. The need thus arises for natural preservatives that could be used for semi processed and processed foods. One of these possibilities is the use of yeast strains to control mycotoxigenic fungi. Four yeast strains (Candida krusei AUMC 8161, Pichia anomala AUMC 2674, Pichia guilliermondii AUMC 2663 and Saccharomyces cerevisiae AUMC 3875) were selected as a biocontrol agents against both growth and mycotoxins production by different 11 toxigenic fungal isolates; five local isolates from different Egyptian food sources and six isolates obtained from CBS (Central Bureau voor Schimmel cultures, Holland). Candida krusei AUMC 8161 completely inhibited the growth and toxin formation of all the 11 tested toxigenic isolates. Pichia anomala AUMC 2674 completely inhibited the growth and toxin production by 6 fungal isolates and strongly reduced the growth as well as toxin formation by the other tested toxigenic fungi. Pichia guilliermondii AUMC 2663 strongly reduced the growth and toxin production by the 11 toxigenic fungi. Saccharomyces cerevisiae AUMC 3875 completely inhibited the growth of 5 fungal isolates and strongly reduced the growth of the others.
Keywords: toxigenic fungi, mycotoxins, antagonistic yeasts.