Fungicidal effect of peracetic acid preparation on Arthrinium sacchari and Chaetomium funicola isolated from a tea beverage manufacturing plant

Abstract

We examined the killing effect of peracetic acid on two filamentous fungal strains, Arthrinium sacchari M001 and Chaetomium funicola M002. The resistance of A. sacchari M001 to peracetic acid was lower than that of Ch. funicola M002, and the latter strain was more appropriate as an indicator microorganism for container sterilization in the aseptic PET bottle filling method. The 6D value of Ch. funicola M002 at 500 μ g/ml was as low as 6.22 min even with 48°C, the highest temperature tested. At a concentration of 2,500 μ g/ml, the 6D value was 3.36 min at 39°C but decreased to 0.67 min at 48°C.