Grape Pomace May Be Used to Preserve Pork Sausage
Researchers in Ames are testing if this winemaking byproduct can safely serve as a natural food preservative.
Updated on Oct. 29, 2026 in Nutrition
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Iowa State University researchers are investigating whether grape pomace, a winemaking byproduct, can serve as a natural preservative in pork sausage. The team is currently recruiting 100 local volunteers for a sensory analysis session to evaluate the updated food product.
Why it matters
As consumer interest in clean-label ingredients grows, researchers are seeking natural alternatives to synthetic food additives. By repurposing grape pomace, which is typically discarded, the study aims to reduce food waste while addressing the demand for more natural preservatives.
This two-year food science study tested two types of grape pomace at two concentrations in pork sausage samples compared to standard formulations. The sensory results remain under investigation, with further findings expected within the next year.
The players
Iowa State University
A public research university with a dedicated food science program that oversees projects regarding food safety and preservation.
USDA North Central Region Sustainable Agriculture Research and Education Program
A federal agency that provides funding for research aimed at improving agricultural sustainability and food production methods.
The details
Grape pomace, the leftover skins and seeds from winemaking, is rich in fiber and phenolic compounds. Researchers are testing if these properties can act as natural antioxidants and antimicrobials to extend the shelf life of pork sausage. The upcoming sensory analysis will evaluate whether these additives alter the visual or olfactory qualities of the meat.
Timeline
Over the last two years, researchers studied the effects of grape pomace on sausage.
The sensory analysis session is scheduled for December 4, 2026, from 10:30 a.m. to 4 p.m.
Full research findings are expected to be shared within the next year.
Health Landscape
This study sits within the broader scope of the USDA North Central Region Sustainable Agriculture Research and Education Program, which funds projects to improve sustainable food systems. The research follows an industry trend of replacing synthetic food additives with naturally sourced ingredients.
This research reflects a growing shift toward natural preservatives in the $7.5 billion U.S. sausage market. While this study is still in the testing phase, readers interested in clean-label products can consult their doctor about how food additives may fit into their dietary goals.
The takeaway
The research highlights an ongoing effort to improve food preservation using natural, nutrient-dense byproducts like grape pomace. Readers interested in their diet can review food labels for specific ingredients and discuss the role of synthetic additives in their nutrition with a physician.
What happens next
A sensory analysis session for the study is scheduled for December 4, 2026, from 10:30 a.m. to 4 p.m. at the Culinary Discovery Lab in the 2379 Food Sciences Building at Iowa State University.
Further reading
For more information on food quality and research, visit Nutrition.
Source note: This article includes information reported by National Hog Farmer.
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