Summary of Awards to Date

Inovative technologies for sanitizing and preserving locally grown produce.

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Oct. 1, 2010 - Sep. 30, 2012

Award Number


Funding Agency

Center for Produce Safety


Steven Pao, Ph.D.
Virginia State University


Ren, S., and Westbrook, E.


Fruits and vegetables are susceptible to natural contamination from soil, insects, birds, water, and other sources during growth and harvest. Although most environmental microbes found on raw produce are considered benign, contamination with spoilage microorganisms and human pathogens presents a persistent challenge to the fresh produce industry. Inadequate produce packing, processing, or sanitation can result in further spread of undesirable microorganisms, leading to serious cross-contamination, product damage and/or foodbrone illness outbreaks. Contaminated produce items have caused several large outbreaks of human salmonellosis over the past few years. These outbreaks and related investigation reports suggest persistent field contamination. Further efforts are needed to prevent and reduce produce contamination on farms and throughout the food supply chain. Some produce sanitizing technologies (such as treatments with ozone, chlorine dioxide, bacteriophage, etc.) have been developed recently with claims of effective pathogen reduction. Additional research is needed, however, to validate and/or enhance the efficacy of these technologies to assure produce food safety.