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Toxicity of Aspergillus flavus cultures isolated from Egypt
Zentralblatt Fur Bakteriologie, Parasitenkunde, Infektionskrankheiten Und Hygiene. Zweite Naturwissenschaftliche Abt.: Allgemeine, Landwirtschaftliche Und Technische Mikrobiologie
|January 1, 1976
Abstract:
Aflatoxin produced by 61.14% of the Aspergillus flavus cultures, isolated from Egypt. A wide potential range for aflatoxins B and G groups was obvious among the isolates. The concentration of aflatoxin B, produced by toxigenic cultures, ranged from 1,500 to 81,000 p.p.b. (mug/kg substrate), corresponding to 1,900 to 184,000 p.p.b. for aflatoxin G. However, 7.59% of the isolates produced more than 50,000 p.p.b. of aflatoxins B + G.
Insights
A significant portion of Aspergillus flavus cultures from Egypt produce aflatoxins B and G. Some isolates yielded high concentrations of these mycotoxins, posing a potential risk.
Area of Science:
- Mycology
- Food Safety
- Toxicology
Background:
- Aflatoxins are toxic secondary metabolites produced by Aspergillus species.
- Aspergillus flavus is a common fungus found in various environments, including food commodities.
- Aflatoxin contamination poses a significant threat to public health and the economy.
Purpose of the Study:
- To investigate the prevalence and mycotoxin-producing potential of Aspergillus flavus isolates from Egypt.
- To quantify the levels of aflatoxins B and G produced by these isolates.
Main Methods:
- Isolation and identification of Aspergillus flavus from samples.
- Culturing of isolates and detection of aflatoxin production.
- Quantification of aflatoxin B and G using established methods (e.g., HPLC).
Main Results:
- 61.14% of Aspergillus flavus isolates from Egypt were found to produce aflatoxins.
- A wide range of aflatoxin B and G production was observed among the toxigenic isolates.
- Concentrations of aflatoxin B ranged from 1,500 to 81,000 p.p.b., and aflatoxin G from 1,900 to 184,000 p.p.b.
- 7.59% of isolates produced over 50,000 p.p.b. of total aflatoxins (B + G).
Conclusions:
- Aspergillus flavus isolates from Egypt exhibit a high potential for aflatoxin production.
- The study highlights the prevalence of toxigenic strains and the significant mycotoxin levels, indicating a potential risk for aflatoxin contamination in food and feed.
- Further monitoring and control strategies are necessary to mitigate aflatoxin exposure in the region.