Isolation and Diagnosis of Filamentous Fungi from Dairy Products and Detection their Toxicity

Dairy products provide a favourable habitat for the growth and survival of many microorganisms including fungi because of their physical and chemical characteristics. Isolates were characterised both macroscopically and microscopically,out of 20 analysed samples 6 species belonging to 5 genera were isolated. Aspergillus niger, Aspergillus flavus, Penicillium expansum, Cladosporium sp., Fusarium oxysporum and Alternaria alternata. The study show most of dairy products contaminated with these fungi .the predominant fungus was penicillium (42.85%) followed by Aspergillus (32.14%), Cladosporium (14.30%), Fusarium (7.14%) and finally alternaria (3.57%).Also detection of toxicity was carried out and the genus Aspergillus flavus was highly toxic followed by Aspergillus niger and Fusarium oxysporum with moderate toxicity, Penicillium expansum and Alternaria alternata with low toxicity and finally Cladosporium sp. with no toxicity.

Anahtar Kelimeler: Dairy products, fungal contamination, Penicillium, Aspergillus

Dairy products provide a favourable habitat for the growth and survival of many microorganisms including fungi because of their physical and chemical characteristics. Isolates were characterised both macroscopically and microscopically,out of 20 analysed samples 6 species belonging to 5 genera were isolated. Aspergillus niger, Aspergillus flavus, Penicillium expansum, Cladosporium sp., Fusarium oxysporum and Alternaria alternata. The study show most of dairy products contaminated with these fungi .the predominant fungus was penicillium (42.85%) followed by Aspergillus (32.14%), Cladosporium (14.30%), Fusarium (7.14%) and finally alternaria (3.57%).Also detection of toxicity was carried out and the genus Aspergillus flavus was highly toxic followed by Aspergillus niger and Fusarium oxysporum with moderate toxicity, Penicillium expansum and Alternaria alternata with low toxicity and finally Cladosporium sp. with no toxicity.

Keywords: Dairy products, fungal contamination, Penicillium, Aspergillus

Alzamily, I. A. (2022). Isolation and Diagnosis of Filamentous Fungi from Dairy Products and Detection their Toxicity. Journal of Current Research on Engineering, Science and Technology, 8 (2), 1-10.