From the age-old fermentation of kefir to the engineering of yeasts capable of transforming lignocellulosic biomass into proteins, microbes are emerging as key players in food innovation. But there is still a long way to go between technical potential and consumer acceptance. This scientific overview sheds light on both the market opportunities and the communication challenges facing manufacturers.
Quick read: The latest research published in Nature Microbiology show that the controlled use of microbes - from consortia for refining chocolate to fungi capable of upcycling food by-products - opens up new prospects for the ingredients industry, both in terms of taste and sustainability.
Rediscovering traditional fermentations: from kefir to chocolate
Researchers point out that although fermentation has been with humanity for thousands of years, its mechanisms are often poorly understood. For example kefir, produced by some fifty species of lactic acid, acetic acid and yeast, whose stability is based on a metabolic crosstalk revealed by multi-omics approaches. This capacity for microbial adaptation guarantees the durability of the consortium and explains why it has been faithfully passed on for centuries. For industry, a better understanding of these ecological dynamics opens the way to more robust and reproducible fermentations, with less batch-to-batch variability.
In the case of chocolate, the Gopaulchan et al. team identified - via metagenomics, metabolomics and modelling - the key bacteria and fungi involved in the fermentation of Colombian cocoa. The result: a defined consortium of five bacteria and four fungi has made it possible to transform beans of inferior quality into chocolate judged by a panel of experts to be equivalent to premium references.
Market issues: improving quality can increase the value captured locally by producers, in a sector where the north-south imbalance remains glaring. This approach also suggests new avenues for traceability and standardisation of aromatic profiles, which can be powerful arguments in commercial negotiations.
Microbes and the circular economy: the example of the Indonesian oncom
Another case studied: the red oncom, a traditional Indonesian food made from soya residues. The mushroom Neurospora intermedia has demonstrated its ability to transform not only this by-product, but also fruit and vegetable pulps into nutritious foods, validated by tasting panels.
This type of’microbial upcycling illustrates a dual benefit: reduce waste and create new sources of nutritious ingredients. For manufacturers, this is an inspiring model for upgrading their own co-products and meeting the sustainability expectations of distributors and consumers. We can already imagine applications in fruit juices, vegetable preparations or functional ingredients, where every residual flow could become a raw material.
From biomass to “new food”: the path of microbial engineering
The researchers go further: with a little genetic tuning, yeasts can convert inedible substrates into cike straw or wood in extracts rich in proteins and vitamins. These products offer protein levels comparable to meat, with a much smaller environmental footprint. This approach opens up a radical perspective: producing nutrient-dense ingredients without relying on traditional food crops, and therefore without additional pressure on arable land.
B2B potential: meeting sustainable nutrition needs (malnutrition, alternative proteins) while diversifying ingredient portfolios. In the long term, this could be a new area of differentiation for ingredient suppliers in the face of fierce competition in the plant protein market.
The central challenge: consumer acceptance of microbes
Despite these advances, the magazine points out that the’adoption will depend on taste, familiarity and social norms. As in the case of farmed meat, acceptance remains low without targeted education on the sensory, health and environmental benefits. Eating habits are changing slowly, and the psychological barriers to a healthy diet remain. “microbial food” remain high.
For B2B players, two levers are emerging: working with consumer brands to associate these innovations with stories of taste and pleasure, and developing easily communicable proof of efficacy (nutrients, sustainability, traceability). Regulators and NGOs will also have a key role to play, with the supervision of claims, sustainability certifications and awareness-raising campaigns helping to legitimise these products.
Conclusion: microbes, strategic partners in food innovation
Between sensory optimisation (chocolate), circular recovery (oncom, pulp) and breakthrough feed (lignocellulosic biomass), Microbes are opening up a whole new world of possibilities for the food industry. But their future will depend as much on science than by communication. For ingredients companies, the challenges are not just technical: they are about transforming discoveries into tangible value propositions, capable of seducing R&D, buyers and consumers.
What about you? Are you preparing to incorporate these microbial solutions into your R&D and marketing roadmaps? Players who position themselves early on this wave will not only be able to create differentiating ranges, but also capture part of the margins linked to the move upmarket in fermented and alternative products.
Reference :
Nature Microbiology, Microbes on the menu, vol. 10, Sept. 2025, pp. 2095-2096. DOI : 10.1038/s41564-025-02117-1