PURPOSE: To enable high-efficiency acetic acid fermentation, by treating ceramics with an acid, filling the treated ceramics and an acetic acid fermentation raw material liquid into a fermentation tank and attaching acetobacter to the ceramics under aeration.
CONSTITUTION: Ceramics 9 and raw material liquid for acetic acid fermentation are filled in a fermentation tank 1, acetobacter is inoculated under aeration to attach and immobilize the acetobacter on the ceramics and acetic acid fermentation is carried out to produce a food vinegar. In the above process, the ceramics 9 are pretreated with an acid (mineral acid such as sulfuric acid or organic acid such as acetic acid) (e.g. immersing in the acid at normal temperature W 100°C for ≥40hr). The acetic acid fermentation can be carried out in high efficiency by this process to enable the high-efficiency production of food vinegar.
TSUBURAYA ETSUZO
MASUDA TSUTOMU
MAJIMA TAKESHI
KAWASE MITSUO
KAMIYA YOSHIHIRO
NGK INSULATORS LTD