Purdue researcher to study food safety in low-moisture food staples

Low-moisture products, such as flour, dried fruit and nuts, are often perceived as safe from food pathogens in consumer’s eyes despite recent bacteria outbreaks. Like other raw food commodities, these low-moisture food products are at risk for foodborne bacteria if there isn’t a “kill step” or heating process to eradicate bacteria during harvest or processing.

“Historically consumers don’t think about low moisture or dry foods having food safety issues. We want to raise awareness among the public about how they can properly handle these food products and reduce the risk,” said Yaohua Feng, assistant professor of food science at Purdue University.

Yaohua FengFeng joins researchers from Michigan State University, Ohio State University, Washington State University, University of California-Davis, the University of Arkansas, the Illinois Institute of Technology, and the U.S. Food and Drug Administration (FDA) to research food safety best practices in low-moisture foods. Led by Bradley Marks, professor and chair in the Michigan State University (MSU) Department of Biosystems and Agricultural Engineering (BAE), the group was recently awarded a five-year, $9.8 million grant from the U.S. Department of Agriculture National Institute of Food and Agriculture (USDA NIFA). Together they will work to reduce the risk of Salmonella, E. coli and Listeria from harvest to consumer in low-moisture foods.

Feng is leading the human factor component of the project. She will collect data from consumers and low-moisture food industry professionals in surveys and observations of current food safety knowledge and practices. Data from the studies will help her create educational materials for industry professionals and consumers. She hopes to drive behavior change in the industry to improve food safety handling and comply with food safety regulations.

“It’s important for the human factor team to work with business decision-makers to convey the food safety risk and educate how to adopt new technology and comply with food safety best practices,” added Feng. “We want to help the food industry understand the risks and learn how to manage them.”

Feng hopes that the educational materials will also increase awareness in consumers about the risks and teach the public on what they can control to protect themselves from food pathogens.

“The research is relatively new for consumers. We don’t want to scare people away from delicious food, but we do want to educate consumers so they can prepare food with food safety in mind and enjoy it safely.”

Read more about the grant research here.

Featured Stories

a woman wearing wires and carbon dioxide sensors is lit from behind, her breath making a trail of white clouds in front of her mouth
Engineering space to breathe: How novel carbon dioxide sensors could improve air circulation in space and life on Earth

NASA’s new generation of Artemis missions will take humanity back to the moon and beyond....

Read More
Ag Barometer
High input-cost concerns continue to weigh on farmer sentiment

Producers continued to express concern about farm finances as the June Purdue University/CME...

Read More
Andrea Liceaga with a graduate student in a lab looking at a microscope
Andrea Liceaga named 2026 University Faculty Scholar

Andrea Liceaga, professor in Purdue University’s Department of Food Science, has been named...

Read More
Student stands in front of Boilermaker Xtra special
A giant leap towards a smaller footprint

Growing up in Grand Rapids, Michigan, Emily Laage attended an environmental school in fifth and...

Read More
Noah Berning
Noah Berning - Graduate Ag Research Spotlight

At 25, Noah Berning has already accomplished a goal held since middle school: he’s going to...

Read More
A woman wearing virtual reality glasses engages with a computer screen.
Aquaponics outreach touts jobs, nutrition and waste reduction

The U.S. imports 90% of its seafood from abroad, racking up a $17 billion trade deficit. Global...

Read More