technology

Tray fermentation

SSF in shallow trays or rotating drums relying on conductive and convective cooling with periodic mixing; the mainstream geometry for industrial-enzyme SSF on bran and rice.

Where it's used

Solid-state fermentation bioreactors
Solid-state fermentation (SSF) bioreactors cultivate filamentous fungi, yeasts and bacteria on moist solid substrates — wheat bran, soybeans, rice, bagasse — at 40–70% moisture without free liquid, producing industrial enzymes (Aspergillus phytase, xylanase), organic acids, koji for shoyu/miso/sake, and biocontrol conidia (Beauveria, Trichoderma) at 3–5× lower cost than submerged fermentation, engineered around tray, rotating-drum and forced-aeration packed-bed hardware that solve SSF's defining challenges of heat removal, moisture control and oxygen transfer in a low-water matrix.
upstream-bioreactors 11 min