Rappaport–Vassiliadis broth (RV) has been available in Japan. However the composition of its broth was found to be varied among the RV product manufactures. We evaluated 9 commercially available RV products by using 2 selective plate media (DHL and CAS) for the Salmonella isolation from ground chicken meat and oilseed. The results showed that the high percentages were yielded by RV product H (42.1%), followed by product G (40.8%) and D (39.5%) respectively. On the contrary, the low isolation percentages were yielded by RV product B and E (30.3%) each. In addition, RV products which isolated high percentage (RV product D, G and H) and low percentage product (RV product B and E) contained the same 29 g/L in the magnesium chloride concentrations. Although certain magnesium chloride concentration effectively inhibits contaminated bacteria other than Salmonella, no relationships between the magnesium chloride concentration level and the isolation percentage of Salmonella were confirmed in this study. On the other hand, it was found that only the lowest percentage of product E is used casein peptone. This results suggested that the kinds of peptone might be influenced on isolation percentage of Salmonella. In conclusion, this study exhibited that the isolation percentage of Salmonella were varied among RV products regarding of the selective plate media. Therefore, using multiple RV products with different compositions can be a key factor for isolating of Salmonella from various samples.

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大阪市内の給食弁当製造施設2社から施設内のふき取りおよび食品を採取し，国内の公定法で指定されているデソキシコレート (DESO) 培地，Food and Drug Administration (FDA) 法およびInternational Organization for Standardization (ISO) 法において大腸菌群の試験法で指定されているバイオレットレッド胆汁乳糖寒天 (VRB) 培地，ISO法において腸内細菌科菌群の試験法で指定されているバイオレットレッド胆汁グルコース寒天(VRBG) 培地およびXM-G培地の4種類を用いて大腸菌群（腸内細菌科菌群）の検出と分離菌種を比較した．その結果，DESO培地から最も多様な菌種が分離されたが，これらの中には腸内細菌科に属さない菌種も含まれており，厳密には糞便汚染の指標となっていない可能性がある．VRBおよびVRBG培地を用いた検査では腸内細菌科に属する菌種に関してはDESO培地と同じように検出されており，これらの菌数はDESO培地と同じか高くなる傾向が認められた．以上より，VRBおよびVRBG培地はこれまで国内の公定法として使用されてきたDESO培地と同様に，衛生指標菌検査に有用と考えられる．

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