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Mycoflora of fungal contamination in wheat storage (silos) in golestan province, north of Iran

Joshaghani, H. and Namjoo, M. and Rostami, M. and Kohsar, F. and Niknejad, F. (2013) Mycoflora of fungal contamination in wheat storage (silos) in golestan province, north of Iran. Jundishapur Journal of Microbiology, 6 (4). ISSN 20083645 (ISSN)

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Abstract

Background: Cereal products are susceptible to mould damage during pre- and post-harvesting stages of the production. The regional specificity of Golestan province in the northern region of of Iran, with its high temperature and high relative humidity, acts as a leading factor for the growth of aflatoxin-producing fungi. It is well known that contamination of starch-based ingredients with mycotoxigenic fungi is a risk factor among the consumers due to its aflatoxins. Objectives: This survey was carried out to determine the extent of fungal contamination of wheat in three silos of Golestan province in Iran. Materials and Methods: 34 samples from three active silos were collected in order to clean the polyethylene bags. Wheat analyzed for fungal contamination and aflatoxins extracted by immunoaffinity column chromatography, and measured by HPLC method. Results: The most common moulds isolated were Alternaria spp. 26.7%, Aspergillus niger 21.4%, Fusarium spp. 17.8%, Aspergillus flavus 10.7%, Cladosporium spp. 10.7%, Penicillium spp. 8.9%, and Rhizopus spp. 3.5%. The screening of aflatoxin, B1, B2, G1 and G2 was carried out. 10(29.4%) samples of wheat had traces of aflatoxin, but in a level lower than the standard levels [Institute of Standards and Industrial Research of Iran (ISIR< 15 ng/g)]. Conclusions: Despite the lower detected aflatoxin levels (lower than the ISIR level), the fungal contamination rate could not be neglected. Since the isolated mycotoxigenic fungi such as Aspergillus spp. and Fusarium spp. are important in food industry, it would be possible that the increased retention time of samples might have raised the detected contamination rate. © 2013, Ahvaz Jundishapur University of Medical Sciences.

Item Type: Article
Additional Information: Unmapped bibliographic data: LA - English [Field not mapped to EPrints] J2 - Jundishapur J. Microbiol. [Field not mapped to EPrints] AD - Golestan Research Center of Gastero Enterology and Hepatology, Golestan University of Medical Sciences, Gorgan, IR, Iran [Field not mapped to EPrints] AD - Golestan University of Medical Sciences, Gorgan, IR, Iran [Field not mapped to EPrints] DB - Scopus [Field not mapped to EPrints]
Uncontrolled Keywords: Aflatoxin, Fungal contamination, Wheat, aflatoxin B1, aflatoxin B2, aflatoxin G1, aflatoxin G2, Alternaria, article, Aspergillus flavus, Aspergillus niger, Cladosporium, food contamination, food industry, food storage, fungal contamination, fungus identification, fungus isolation, Fusarium, high performance liquid chromatography, immunoaffinity chromatography, Iran, nonhuman, Penicillium, Rhizopus, toxin analysis, wheat, Alternaria, Aspergillus, Aspergillus flavus, Aspergillus niger, Cladosporium, Fungi, Fusarium, Penicillium, Rhizopus, Triticum aestivum
Subjects: مقالات نمایه شده محققین دانشگاه در سایت ,Web of Science ,Scopus
موارد کلی
Divisions: معاونت تحقیقات و فناوری
Depositing User: GOUMS
Date Deposited: 19 Apr 2015 05:18
Last Modified: 10 May 2015 07:05
URI: http://eprints.goums.ac.ir/id/eprint/1882

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