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Sources of Food Contamination

Sources of Food Contamination

Contamination of food by microbial agents and natural toxins poses significant risks to public health. These hazards can be introduced at various points across the food supply chain, ranging from environmental sources to processing and storage stages. Understanding these contamination pathways is critical for developing strategies to ensure food safety.Seafood is particularly vulnerable to contamination through both environmental exposure and microbial colonization. Toxins from harmful algal...

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RNAi-mediated Control of Aflatoxins in Peanut: Method to Analyze Mycotoxin Production and Transgene Expression in the Peanut/Aspergillus Pathosystem

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Published on: December 21, 2015

Post-harvest practices for aflatoxin control: Evidence from Kenya.

Alexia Pretari¹, Vivian Hoffmann¹, Lulu Tian²

¹International Food Policy Research Institute, 1201 Eye St NW, Washington, DC, 20005, USA.

Journal of Stored Products Research

|February 15, 2020

Summary

A post-harvest technology package significantly cut maize aflatoxin contamination by over 50% in Kenya. Training and drying sheets were key, low-cost interventions driving this reduction.

Keywords:

Aflatoxin Kenya Maize Post-harvest technologies RCT

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Area of Science:

Agricultural Science
Food Safety
Mycotoxicology

Background:

Aflatoxins are toxic fungal metabolites that contaminate staple crops like maize.
Post-harvest losses and food safety concerns are significant in developing countries.
Effective interventions are needed to reduce aflatoxin contamination in maize.

Purpose of the Study:

To evaluate the impact of a comprehensive post-harvest technology package on aflatoxin contamination in maize.
To identify which components of the technology package are most effective in reducing aflatoxin levels.

Main Methods:

A randomized controlled trial was conducted in rural Kenya.
Intervention included training, sun-drying plastic sheets, a mobile drying service, and hermetic storage bags.
Aflatoxin contamination levels were measured in maize from treatment and control villages.

Main Results:

The overall intervention reduced aflatoxin contamination by more than 50%.
Training and the use of plastic drying sheets were the primary drivers of this reduction.
Lower-cost technologies demonstrated significant efficacy in mitigating aflatoxin contamination.

Conclusions:

Integrated post-harvest management strategies can effectively reduce aflatoxin contamination in maize.
Cost-effective interventions, such as farmer training and improved drying methods, are crucial for food safety.
Scaling up these technologies can improve food security and public health in affected regions.