Iowa State Researchers Test Grape Byproducts in Sausage

The university is recruiting volunteers to evaluate pork sausage preserved with grape pomace.

Updated on Oct. 29, 2026 in Nutrition

Iowa State Researchers Test Grape Byproducts in Sausage

Live Poll

Would you trust processed meat products if they used natural plant byproducts instead of synthetic additives?

Researchers at Iowa State University are testing whether grape pomace, a winemaking byproduct, can serve as a natural preservative in pork sausage. The team is now seeking 100 volunteers to participate in an upcoming sensory analysis session.

Why it matters

Consumer demand for clean-label food has spurred research into natural alternatives to synthetic additives. Using grape pomace provides a sustainable way to utilize winemaking waste while potentially improving the antioxidant and antimicrobial quality of meat products.

The U.S. sausage market currently exceeds $7.5 billion in annual value. Researchers tested two different types of grape pomace at various concentrations over a two-year study period to determine their efficacy as additives.

The players

Iowa State University

This public research university in Ames maintains a prominent food science program.

USDA North Central Region Sustainable Agriculture Research and Education Program

This federal program provides grants for agricultural research projects throughout the Midwestern United States.

The details

The sensory analysis session will take place at the Culinary Discovery Lab in Ames, where participants will evaluate the visual and olfactory characteristics of the samples. This research project, funded by the USDA North Central Region Sustainable Agriculture Research and Education Program, aims to validate the use of fiber and phenolic-rich pomace as a functional food ingredient.

Researchers studied the effects of grape pomace on sausage over the last two years.
A sensory analysis session for 100 volunteers is scheduled for December 4, 2026.
The analysis session will run from 10:30 a.m. to 4 p.m.
Full research findings are expected to be shared within the next year.

Health Landscape

This research aligns with the broader push toward natural food preservation, mirroring the industry shift driven by the USDA's Clean Label Initiative. It represents a move away from synthetic additives toward functional ingredients that utilize existing agricultural byproducts.

Volunteers participating in the December study must eat sausage at least twice per month to qualify for the sensory analysis. The research may eventually lead to new, clean-label pork products on grocery shelves that utilize natural plant-based antioxidants.

The takeaway

Using agricultural waste like grape pomace could transform how manufacturers preserve meat products without relying on synthetic chemicals. Interested residents in Ames can participate in upcoming sensory panels to help shape the future of food additive research.

What happens next

The sensory analysis session is set for December 4, 2026, at the 2379 Food Sciences Building, where participants will spend 10-15 minutes testing sausage samples.