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Beneficial allies

FFermentation

Microbes turning food into kimchi, doenjang, yoghurt and other living crafts — chemistry plus culture.

Also called: Microbial food chemistry ? Anaerobic energy path

Jars of kimchi, doenjang and yoghurt as everyday ferments
Tjhackmann ? CC BY-SA 4.0

Quick facts

Regenerate NAD+ without oxygen as the sinkCell purpose
Acid, alcohol, gas, flavour, storageKitchen purpose
1857 — living yeast and fermentationPasteur year
Lactic bacteria such as Leuconostoc and LactobacillusKimchi guild
S. thermophilus + L. delbrueckii subsp. bulgaricusYoghurt pair
Koji moulds plus bacteria over monthsDoenjang helpers

Fermentation is how microbes finish sugars when oxygen is not the main electron sink — and how kitchens turn cabbage, soy and milk into kimchi, doenjang and yoghurt.

Pasteur showed the vat is alive. Buchner later showed enzymes can work in a juice. Neither invented the jar already on the table.

This atlas treats fermentation as an ally of flavour and storage. It names kimchi, doenjang and yoghurt as everyday uses and refuses medical or laboratory how-tos.

The profile

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  • Familiarity85
  • Medical weight30
  • Benefit88
  • Risk12
  • Research55
  • Live debate20

Risk

12 / 100

Microbes turning food into kimchi, doenjang, yoghurt and other living crafts — chemistry plus culture.

Seven ways into this topic

Frequently asked questions

Is fermentation the same as rotting?
No. Crafted ferments steer microbes toward acids or alcohols.
Are kimchi, doenjang and yoghurt probiotics?
They are fermented foods. Probiotic is a narrower evidence claim. Enjoy them as food.
Did Pasteur invent fermentation?
No. He explained living cells in the vat. People fermented for millennia before 1857.
Do I need oxygen for fermentation?
Classic fermentation does not use oxygen as the electron sink.
Can fermentation replace a medicine?
No. Food is food. This page is not a treatment plan.
Why does kimchi get more sour?
Lactic bacteria keep making acid in the fridge, just slower.
Should I culture pathogens to ferment?
No. This atlas gives no culture protocols for pathogens.
Is this medical advice?
No. Educational only. Clinicians handle illness and special diets.

Sources & research

  1. Fermentation2026 · Wikipedia
  2. Institut Pasteur1857 · Institut Pasteur

Media credits

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