抄録
Examination was made of the effects of nine commercial disinfectants in short term application at concentrations recommended for practical use against 34 fungi. The effects of a yeast extract comprised of various organic substances on the efficacy of the disinfectants were also studied. Ethanol (EtOH, 70%, v/v) was found the most effective disinfectant and not influenced by yeast extract at a concentration of 5% (w/v). Oxidizing potential liquid (OPL) with 55μg/ ml as the active chlorine concentration, iodine (IA) at 45μg/ml and sodium hypochloride (NaOCI) at 200μg/ml all showed strong fungicidal effects, which were, however, significantly diminished by yeast extract. Didecyldimethylammonium chloride (DDAC) at 100μg/ml, benzalkonium chloride compounds (BACC) at 285μg/ml and benzalkonium chloride (PBKC) at 200μg/ml had a smaller fungicidal effects but there effects were less altered by the extract. [Mono-bis (trimethylammonium methylene chloride)] -alkyl (C9-15) toluene (MBAT) at 100μg/ml and chlorhexidine digluconate (CHD) at 200μg/ml, showed the smallest fungicidal effects.
