Every day, sliced, shredded and bagged vegetables are thrown away, not because anything is wrong with them, but because they have run out of time.
VakuFerm makes crunchy, living produce that keeps for up to a year.
Problem
The moment a vegetable is sliced, shredded or peeled, the wounded tissue starts respiring faster, browning and softening. Fresh-cut fruit and vegetables typically last only about 7 to 14 days, even when kept perfectly cold.
Much of this waste has nothing to do with quality. It is a matter of time, and it shows up in three places.
Slicing or peeling triggers tissue wounding, accelerating respiration rates and enzymatic browning, so cut produce turns brown or soft rapidly.
Whole fresh produce often lasts 1 to 3 weeks. Fresh-cut items typically have a shelf-life window of only 7 to 14 days, even under optimal cold-chain conditions.
Supermarkets frequently reject shipments or purge shelf stock if a bagged salad or cut-fruit bowl loses even 1 to 2 days of its projected display life.
Shelf-life figures: USDA Agricultural Research Service (ARS).
Mission
“More food with fewer resources and less waste to enable healthier living by making fermentation scalable.”
Long before refrigeration, people had a way to make vegetables last: they fermented them. Lactic acid bacteria, naturally present on plants, turn sugars into acid and make food inhospitable to spoilage while maintaining nutritional value, reducing food waste without relying on artificial additives. Sauerkraut, kimchi and pickles are the result of thousands of years of this practice.
| Method | What it does | What it costs |
|---|---|---|
| Modified-atmosphere packaging (MAP) | Buys days, not months | Still needs an unbroken cold chain |
| High-pressure processing (HPP) | Extends shelf life without heat | Products must still be kept refrigerated, and the equipment is costly enough that many processors outsource it or go without |
| Freezing | Stops the clock | Ties the product to energy-intensive frozen logistics and damages texture |
| Canning | Stops the clock | Heat treatment cooks the produce and kills anything alive in it |
Fermentation does not slow nature, it lets it thrive.
The result is two industries that never meet: one that sells freshness on a countdown, and one that preserves food in vats.
The problem was never fermentation. It was the process.
Process
VakuFerm turns the final package into the fermentation vessel. Processors use equipment they already own, with fermentation sealed inside the pack instead of in open vats on the factory floor.
Produce is washed, cut and chilled exactly as today, with no chemical treatment.
It is inoculated with a bioprotective culture and sealed in its retail pack on any standard vacuum sealer. No new packaging line is needed.
Packs are held at 25–30 °C, the temperature optimum of the current culture, for three to seven days.
Within the first 24 hours of incubation, the pH reliably drops below 4.2, well under the 4.6 threshold that food-safety standards use to control pathogen growth in acidified foods.
How fast the pH falls depends on the produce’s sugar content and how much surface the cut exposes, so VakuFerm calibrates culture and incubation to each product for a reproducible result.
Safety
Seal
Culture
Acid
Economics
The countdown disappears. A shelf life that goes from 7–14 days to up to a year means producing to stock instead of to order.
VakuFerm products sit on regular, unrefrigerated shelves, freeing up scarce chilled space. With a shelf life measured in months, the daily cycle of markdowns and discards that defines the fresh aisle no longer applies.
Seasonal produce like asparagus can be offered all year.
A different kind of ferment. Because nothing is pasteurized, the cultures stay alive and support a healthy gut microbiome. Because the cells stay intact, the produce keeps its crunch, with a mild, clean sourness that appeals well beyond fermentation fans.
Team
We come from different domains, from food scientists and nutritionists to market leaders and political scientists.
We’ve intentionally assembled superstars from different fields, bringing distinct ideas and ways of thinking to one problem: transform food systems and enable healthier living.
Partners
To get there, we are looking for four kinds of partners.
To develop multi-culture systems.
Discuss culturesTo build the bio-active packaging layer.
Discuss packagingTo pilot VakuFerm on their own lines.
Request a pilotTo back the pre-seed round, the patent strategy and the next stage of development.
Talk investmentAnswer five short questions and your message goes straight to ansgar@sauerkult.de.
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FAQ
VakuFerm is at TRL 4: the process has been validated in the lab through research and product development at the Institute of Agricultural and Urban Ecological Projects (IASP), affiliated to Humboldt-Universität zu Berlin. Two fresh-cut processors are already on board as pilot partners.
FutureFerm captures this opportunity through a B2C2B model in three phases.
After the pre-seed round, we launch our own consumer brand with two product lines: superfood krauts and fermented chickpea salads. SAUERKULT proves that consumers buy VakuFerm products, generates early revenue, and builds the sales and stability data processors will ask for.
With demand proven, we license the VakuFerm process to fresh-cut processors in exchange for royalties. Processors add a new product line, and FutureFerm scales without building plants.
The bio-active packaging layer now in development moves the culture into the pack itself. Processors simply fill and seal, and FutureFerm earns recurring revenue on every pack.
Two properties of the culture make fermenting under vacuum possible. It is homofermentative: it produces lactic acid without gas, so packs stay flat and sealed. And the vacuum draws the fermentation liquid into the plant tissue, so the produce ferments from within rather than from the outside in.
The cells stay intact instead of softening, and the produce keeps its crunch.
Fresh-cut produce has always been a race against time. At FutureFerm, we believe biology can win it, by working with nature and not against it.