In recent years, plant-based foods have gone from being a niche alternative to an innovative and rapidly growing food category, thanks to the decisive influence of scientific and technological research. This progress has been fuelled by growing awareness of the health benefits, the need to reduce environmental impact and interest in more ethical and sustainable diets.

One of the most important issues has been the need for alternative proteins that can functionally and sensorially replace those of animal origin. Scientific intervention has made this possible by developing plant proteins with improved textures, flavours and nutritional values. Ad hoc technological innovations have therefore been developed, the main ones being:

• Precision fermentation: Using microorganisms to produce proteins and fats identical to those found in animals (e.g. whey and casein without cows).
• New protein sources: Proteins derived from peas, chickpeas, mushrooms, lentils and sunflower seeds have been optimised to improve their amino acid content and bioavailability.
• Molecular structuring: Techniques such as high-moisture extrusion allow meat-like textures to be created using plant proteins.

One of the biggest obstacles for plant-based foods has undoubtedly been the issue of taste, often considered less appealing than their animal counterparts. Here too, science has come to the rescue, working to overcome this limitation. The key areas on which food technology has focused can be summarised as follows:

• Taste mapping: Studies on the sensory profile of plant proteins to mask unwanted aftertastes.
• Natural flavours: Development of plant molecules to replicate meat flavours, such as the plant haemoglobin found in the Impossible Burger.
• Enzyme technology: Use of enzymes to improve digestibility and reduce the bitter taste of plant proteins.

Another major challenge has been to address the need to resolve the issue of deficiencies that can commonly occur in plant-based foods. Techniques have been developed to address these issues, including:

• Fortification: Adding vitamins (B12, D), minerals (iron, calcium) and essential fatty acids to fill nutritional gaps.
• Functional fibers: Incorporating prebiotic fibers to improve gut health and reduce the risk of metabolic diseases.
• Reduction of antinutrients: Fermentation and processing reduce compounds that inhibit nutrient absorption.

Another important issue that needed to be addressed was, first and foremost, sustainability and, secondly, scalable production, a key factor in reducing costs. In general, the environmental impact of these foods has been improved by addressing the following key factors:

• Resource reduction: The use of low water and carbon impact ingredients, such as algae and legumes, contributes to more sustainable production.
• Vertical and hydroponic farming: These innovative techniques allow plant-based ingredients to be grown more efficiently and sustainably.
• Eco-friendly packaging: New technologies are reducing the use of traditional plastic packaging.

In light of all this, it is natural to wonder what the future holds for the sector and whether it will truly be compatible with real improvements in health. What is certain is that the world of plant-based foods, accompanied in its development by scientific advances, will continue to expand towards increasingly advanced solutions, given the growing consumer demand for eco-friendly food. Cultured meat, alternative cheeses and dairy products are being studied and developed, as is the idea of combining nutrigenomics with the study of plant-based foods, personalised according to an individual’s DNA.

All this is certainly fascinating and responds to the need for more accessible and acceptable foods for the general public. But it is also opening the way to completely innovative food solutions, thanks to continuous technological development, the search for greater palatability and the ultimate goal of respecting the planet and improving human health.

The hope of all of us is that plant-based foods, which are essentially simple and commonly used foods, will not become the new junk food, effectively replacing the current junk food of animal origin.