黒麹菌 くろこうじきん Also written 黒こうじ菌 Meanings Noun Aspergillus niger; Aspergillus awamorii; black koji mold Kanji 黒 black. Read as くろ. 麹 malt; yeast. Read as こうじ. 菌 germ. Read as キン. Jinuma: Japanese Dictionary · Word lists