Question

Aflatoxins are produced by:

A.

Alternaria burnsii

B.

Fusarium graminearum

C.

Cladosporium spp.

D.

Aspergillus flavus

Correct option is D

The correct answer is: (D) Aspergillus flavus
Explanation:
Aflatoxins are toxic secondary metabolites primarily produced by the fungus Aspergillus flavus and also by Aspergillus parasiticus.
These toxins contaminate a wide range of agricultural commodities, especially cereals (like maize), nuts (like groundnut), and oilseeds, particularly when stored under warm and humid conditions.
  • Aflatoxins are highly carcinogenic and can cause acute poisoning, liver damage, and even death in humans and animals.
  • They are one of the most serious mycotoxins of concern in food safety.

Information Booster:
  • Aflatoxins are classified into several types: B1, B2, G1, and G2. Among these, Aflatoxin B1 is the most toxic and carcinogenic.

  • Regulatory bodies like FSSAI (India) and FDA (USA) set strict limits for aflatoxin content in food products.

Knowledge Booster :
  • Alternaria burnsii: Causes diseases in plants like leaf spot in cumin.

  • Fusarium graminearum: Produces trichothecenes and zearalenone, It causes head blight in wheat.

  • Cladosporium spp.: Commonly found as saprophytes on plant material.

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