Aflatoxins: characteristics and impact on human health

Area of Science:

• Environmental Microbiology
• Food Safety
• Toxicology

Background:

• Molds such as Aspergillus flavus and A. parasiticus naturally produce mycotoxins during secondary metabolism.
• These molds are prevalent in soil and decaying plants, with spores spreading via air and insects to contaminate crops and food storage.
• Aflatoxins, including B1, B2, G1, G2, M1, and M2, are common mycotoxins with significant implications for human and animal health.

Purpose of the Study:

• To highlight the health risks associated with aflatoxin exposure from contaminated food.
• To explain the molecular mechanisms underlying aflatoxin toxicity.
• To emphasize the importance of routine testing for aflatoxins in food and agricultural products.

Main Methods:

• Review of scientific literature on mycotoxin production by molds.
• Analysis of the toxicological effects of aflatoxins on biological systems.
• Discussion of molecular mechanisms of aflatoxin-induced damage.
• Examination of current food safety practices regarding aflatoxin detection.

Main Results:

• Aflatoxins are potent toxins produced by common Aspergillus species.
• Exposure occurs primarily through ingestion of contaminated food, leading to adverse health effects.
• Aflatoxins exhibit teratogenic, mutagenic, carcinogenic, immunotoxic, and hepatotoxic properties.
• Molecularly, aflatoxins induce DNA mutations, protein modifications, and free radical formation.

Conclusions:

• Aflatoxins represent a significant food safety concern due to their widespread occurrence and severe health implications.
• The carcinogenic nature and molecular toxicity of aflatoxins underscore the need for stringent monitoring.
• Routine examination of food and agricultural products for aflatoxins is crucial for public health protection.