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Fermotein is an industrial food ingredient, not a traditional ferment. The mould Rhizomucor pusillus strain CBS 143028 is grown by fermentation, and its whole mycelium is harvested and dried into a biomass powder rich in protein, fibre and micronutrients. The EU authorised it as a novel food for adults in July 2026.
A short entry: the sources we found record only what is said here about Fermotein itself.
Short entryOther
Recipe
No fixed amounts recordedIndustrial process; feedstock, conditions and amounts are not published in the sources read.
Rhizomucor pusillus strain CBS 143028
The single production strain; its genome has no known toxin, virulence or antibiotic-resistance genes[scaife2023]
Starter
defined culture: Rhizomucor pusillus CBS 143028
Start
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What changes:Mould threads grow in a fermenter
Step 1 of 3
Grow the mould by fermentation
Time
Not documented
Temperature
Not documented
Salt
None given
Acidity
Not documented
Which microbes the steps name, step by step
Moulds
Output: mycelium biomass.
Flavour
Not documented
Texture
Not documented
Colour
Not documented
Microbes at work in this step
Rhizomucor pusillus grows as mycelium
Method
Measured measured in a studySet fixed by a specification or tested recipeReported one source reports itTypical a general value, not sourced for this fermentUnconfirmed not yet checked against a source
At a glance
Fermotein is an industrial food ingredient, not a traditional ferment. The mould Rhizomucor pusillus strain CBS 143028 is grown by fermentation, and its whole mycelium is harvested and dried into a biomass powder rich in protein, fibre and micronutrients. The EU authorised it as a novel food for adults in July 2026. Rhizomucor pusillus CBS 143028 does most of the fermenting.
EU authorisation is for adults only; the label must say it should not be eaten by people under 18 or by pregnant or breastfeeding women. In a 90-day rat study the highest dose, 300,000 ppm in the diet, caused no adverse effects. Screening of allergy patients' sera found only weak and limited IgE binding, and the genome lacks mucoricin, the toxin behind mucormycosis.
EFSA concluded in 2025 that the biomass powder is safe under the proposed uses. Commission Implementing Regulation (EU) 2026/1507 of 3 July 2026 authorised Rhizomucor pusillus mycelium as a novel food, for sale from 26 July 2026, with five years of data protection for The Protein Brewery.