Ohio State Researchers Innovate to Reduce Odors in Plant-Based Proteins

Researchers at The Ohio State University have developed a novel two-step fermentation process aimed at significantly reducing the unpleasant odors commonly associated with plant-based proteins. This innovative method has demonstrated the ability to eliminate between 95% to 99% of undesirable smells, a marked improvement over traditional one-stage fermentation techniques. The study, published in the journal *Foods*, highlights the importance of sensory appeal in food choices, particularly as consumer preferences shift towards healthier and more sustainable options.

Researchers want a better whiff of plant-based proteinsOhio State Researchers Develop Breakthrough in Reducing Odors of Plant-Based Proteins

The two-step fermentation process begins with the introduction of beneficial bacteria, specifically *Lactobacillus plantarum*, which ferments the plant proteins and breaks down the compounds responsible for foul odors. In the second stage, a traditional yogurt culture is employed to enhance the aroma profile, making the final product more palatable. This method was tested on eight different plant proteins, including soy, pea, chickpea, mung bean, faba bean, rice, barley-rice, and hemp. Human sensory evaluations consistently indicated a significant reduction in unpleasant smells across all tested proteins.

Researchers want a better whiff of plant-based proteinsOhio State Researchers Develop Breakthrough in Reducing Odors of Plant-Based Proteins

The researchers also explored the effects of various additives on the fermentation process. Natural sugar allulose was found to enhance the activity of *Lactobacillus plantarum*, while strawberry preserves improved the performance of the yogurt culture. Conversely, non-fermentable additives such as pectin, xanthan gum, and oil had minimal impact on odor reduction. This nuanced understanding of ingredient interactions is crucial for optimizing the fermentation process.

Researchers want a better whiff of plant-based proteinsOhio State Researchers Develop Breakthrough in Reducing Odors of Plant-Based Proteins

The findings from this research not only advance the understanding of fermentation in food science but also present a practical solution for creating flavorful plant-based dairy alternatives. Sheryl Barringer, senior author of the study and a professor in food science and technology at Ohio State, emphasized the growing consumer demand for healthier, environmentally friendly food options. "There’s a real focus on people wanting to be healthier and more environmentally conscious," she stated, indicating that this area of research is likely to expand in the coming years.

Researchers want a better whiff of plant-based proteins

While the study presents promising advancements, some critics may argue that the focus on sensory appeal could overshadow other important factors such as nutritional content and sustainability in the production of plant-based proteins. Additionally, the long-term effects of these fermentation processes on nutritional value remain to be fully understood.

Researchers want a better whiff of plant-based proteins

• “Consumers want that option, but they don't want to give up on the taste.” — Sheryl Barringer, Professor of Food Science and Technology, Ohio State University

Researchers want a better whiff of plant-based proteins

• “The only thing changed is how we utilize the bacteria.” — Manpreet Kaur, Lead Author and PhD Student, Ohio State University

Ohio State Researchers Develop Breakthrough in Reducing Odors of Plant-Based Proteins

• “There’s a real focus on people wanting to be healthier and more environmentally conscious, and a push for plant-based products instead of meat and dairy products,” — Sheryl Barringer, Professor of Food Science and Technology, Ohio State University

Researchers want a better whiff of plant-based proteins

This research represents a significant step forward in making plant-based proteins more appealing to consumers, potentially leading to a broader acceptance of these products in the market.

Researchers want a better whiff of plant-based proteins