Effect of Suspension, Carrier and Culture Medium on D Value upon Preparation of Biological Indicator (BI)

Abstract

3ゐ初 彦 ani Hideharu ハJatilonat Instititte げ Heatth Sciences 1 − 18 − 1，KamzkWo ≦ la， ＆ tasraya ，7 「 okyo The ISO 11138 series on biolog 三 caBndicator ( BI ) are 呈 nsuffic 三 ent for the concrete descript 孟 on on suspension ， carrier and recovery culture medium of microorganisms for preparat 玉 on of B 王． Suspension ， carrier and cu1ture me 〔lium have a potential to affect D value of BI． Individual effect of suspenslon ， carrier or culture medium on D value of BI was reported ， but the combl − nation effect of these factors on D value was not reported yet and the author did not confirm individual effect on D value contrary to the previous papers ． The combination effect of salt from suspension when drying and pore of the carrier for entrapping microorgamisms wiH be speculated to prevent sterilization