Mycoflora and mycotoxins in kolanuts during storage
نویسندگان
چکیده
The mycoflora, levels of afllatoxins and the presence of ochratoxin A and zearalenone in nuts of Cola acuminata and C. nitida were determined immediately after curing and after 3, 6 and 9 months of storage in leaf-lined baskets. Five field fungi and 11 storage fungi were isolated. Aspergillus, Penicillium and Fusarium were the predominant genera. None of the target toxins was detected immediately after curing. Increasing quantities (5 to 160 ppb) of each of the aflatoxins B1, B2, G1 and G2 were recorded as from the 3rd month while zearalenone and ochratoxin A were detected only after the 6th and 9th month, respectively.
منابع مشابه
Mycoflora and Natural Incidence of Selected Mycotoxins in Rabbit and Chinchilla Feeds
Mycotoxins are secondary metabolites produced by filamentous fungi that cause a toxic response when ingested by animals or man. Demand of natural fur, such as those from rabbit and chinchilla, produced under controlled conditions, has increased worldwide. The toxicogenic mycoflora contaminating feeds for these animals was enumerated and identified. Six of the major mycotoxins implicated in anim...
متن کاملMycoflora and Enzymatic Characterization of Fungal Isolates in Commercial Meju, Starter for a Korean Traditional Fermented Soybean Product
Mycoflora was assessed in the commercial meju from four well-separated geographic origins. A total of 112 fungal isolates were identified by phenotypic characteristics and molecular taxonomy using sequencing the internal transcribed spacer of the rDNA and revealed 19 species from 13 genera. Enzymatic characteristics of protease and amylase, and mycotoxin production were analyzed.
متن کاملبررسی آلودگی قارچی برنج مورد مصرف غذایی کشاورزان
Abstract Background and purpose: Rice is the staple food in Iran particularly in the northern provinces of Gilan and Mazandaran. It is, however, prone to mycoflora and mycotoxin production. This study was conducted to determine the contaminant mycoflora of rice grains in Mazandaran province, in order to use this information to consider possible mycotoxin occurrence in this area. Materials a...
متن کاملSeed borne fungi of rice from South Tamil Nadu
Fungi associated with seeds of five cultivars of rice were isolated by agar and blotter paper methods. The fungus was isolated from the contaminated surface of unmilled rice grain and identified based on their typical structure and basic characters as suggested by Barnett and Hunter (1972). Five pathogenic fungi, namely Aspergillus flavus, A. niger, Penicillium citrinum, Alternaria padwickii an...
متن کاملMycoflora of Poultry Feeds and Mycotoxins Producing Potential of Aspergillus Species
The aim of this study was to determine the mycoflora of poultry feeds and evaluate the aflatoxin and ochratoxins producing ability of isolated Aspergillus species. One hundred and nineteen samples of commercially prepared and farm mixed feeds were collected during 20052007. The samples were inoculated on potato dextrose agar, Czapek dox solution agar, Czapek yeast autolysate agar and yeast extr...
متن کامل