Voila ce que j'ai trouvé sur lepontdevie.org:
EM contains 17 different strands of micro-organisms; aerobe and anaerobe = they sustain each other
mutually: aerobe microbes consume oxygen and discharge CO2, while anaerobe microbes use CO2 and
discharge oxygen.
1. Photosynthetic bacteria (independent, self-sustaining micro-organisms: they use sunlight and
warmth of the soil to transform organic material in bio-active substances)
2. Actinomyces (are between bacteria and fungi; create
anti-microbial substances that suppress
harmful fungi and bacteria; they help nitrogen assimilation on roots of legumes)
3. Lactobacillus (create lactic acid from sugars coming from photosynthetic bacteria and yeasts;
they have a strong anti-septic action)
4. Yeasts (convert sugars, amino-acids from photosynthetic bacteria into enzymes and hormones)
5. Fermentative fungi (aspergillus,
penicillium decompose organic material to produce alcohol and
anti-microbial substances; they suppress odours and vermin).
Bon, c'est un début de réponse
Mais du coup ça me conforte dans l'idée que ça fonctionne comme les antibiotiques (enfin dans une certaine mesure) =S