Ilayisi le-koji yilayisi elipheke ngomusi elifakwe isikhunta i-Aspergillus oryzae. Ama-enzyme alo (i-amylase, i-protease, i-lipase) ahlukanisa ustashi abe ushukela namaprotheni abe ama-amino acid — kuyisisekelo se-sake, i-miso, usoso we-soya noviniga welayisi.