In the EU-funded Sustain-a-bite project, natural bioprocessing technologies like fermentation and seed bioactivation are being harnessed to address one of today’s major food challenges: making plant-based foods more nutritious, functional, and sustainable—without relying on chemicals or heavy processing. These techniques enable us to extract more value from whole plant ingredients while drastically reducing energy, water, and raw material use.

The Challenge with Plant-Based Ingredients

As plant-based diets continue to grow in popularity, they face inherent challenges such as low digestibility, the presence of antinutritional factors, and deficiencies. However, many plant-based products on the market overlook these issues. Additionally, these products often result in ultra-processed foods containing additives, preservatives, and artificial ingredients that compromise their nutritional value. Additionally, many rely on production methods that are neither environmentally nor health-friendly.

A Better Way: Transforming Biomass with Natural Bioprocessing

At the heart of the Sustain-a-bite project is the goal to produce nutrient-rich, functional plant ingredients using natural bioprocessing techniques like fermentation. This process enables the production of nutrient-dense, wholesome plant-based ingredients with significant sustainability benefits—allowing for at least a 30% reduction in energy use, 50% reduction in water consumption, and up to 90% reduction in raw material usage, compared to the production of highly processed and refined plant-protein isolates.

The Power of Fermentation

Fermentation is one of the oldest food-processing techniques, harnessing the activity of beneficial microorganisms to transform raw or low-grade materials into nutrient-dense, flavourful, and shelf-stable products. Far beyond preservation, fermentation offers a wide range of functional and nutritional benefits, making it highly relevant to modern plant-based food systems. Specifically, fermentation can:

• Reduce antinutritional factors, such as phytic acid, enhancing nutrient absorption.
• Boost bioavailability of key vitamins and minerals.
• Synthesize beneficial compounds, like B vitamins, antioxidants, and bioactive peptides.
• Improve sensory qualities, including taste and texture.
• Extend shelf life through the natural production of organic acids and other antimicrobial agents.

According to the International Scientific Association for Probiotics and Prebiotics (ISAPP), fermented foods are “foods made through desired microbial growth and enzymatic conversions of food components.” These transformations occur through the action of a variety of microorganisms, including lactic acid bacteria, yeasts, and filamentous fungi. They break down complex substrates into more bioavailable and functional forms, turning often underutilized ingredients into valuable, palatable foods. Fermentation not only boosts the nutritional profile but also adds functional benefits, such as probiotics, and naturally inhibits spoilage without relying on synth8etic preservatives.

Additionally, fermented foods may offer a non-invasive strategy for addressing multiple health conditions, such as hypertension, diabetes, hyperlipidaemia, oxidative stress, and various cognitive disorders. The release of bioactive compounds, microbial enzymatic conversions, and probiotic activities are key drivers of these health benefits.

The Sustain-a-bite project aims to prove that it is possible to develop clean-label, nutrient-dense, and environmentally friendly plant-based foods at scale. By applying fermentation and seed bioactivation to crops like chickpeas, faba beans, and agricultural by-products such as tomato and apple pomace, the project demonstrates how natural bioprocessing technologies can create high-quality, sustainable plant-based foods that are both nutritious and environmentally friendly.