A new mycotoxin from Aspergillus candidus Link isolated from rough rice

Area of Science:

• Mycology
• Natural Product Chemistry
• Toxicology

Background:

• Mycotoxins pose significant risks to food safety and human health.
• Aspergillus candidus is a fungus found in various environments, including stored grains.
• Tropical conditions can promote fungal growth and mycotoxin production in stored rice.

Purpose of the Study:

• To isolate and characterize a new mycotoxin from Aspergillus candidus.
• To determine the toxicological profile of the newly identified mycotoxin.

Main Methods:

• Isolation of mycotoxin from Aspergillus candidus mycelium.
• Spectroscopic analysis to determine molecular formula and structure (C28H40O).
• Fluorescence characterization under UV light (254 nm).
• Determination of median lethal dose (LD50) in white rats via intraperitoneal injection.

Main Results:

• A new mycotoxin, designated AcT1, was successfully isolated.
• AcT1 exhibits bright greenish-blue fluorescence under UV (254 nm).
• The median lethal dose (LD50) of AcT1 in white rats was determined to be 4.5 mg/Kg.

Conclusions:

• Aspergillus candidus produces a novel mycotoxin, AcT1.
• AcT1 possesses distinct spectral properties and significant acute toxicity.
• Further research is warranted to understand the implications of AcT1 in food safety and potential health impacts.