Falcao D P, Ewing W H, Dowell V R
Contrib Microbiol Immunol. 1979;5:88-94.
A study was made of the cultural characteristics of 43 strains of Yersinia enterocolitica and 49 strains of Yersinia pseudotuberculosis on media commonly used for the isolation and differentiation of enteric bacteria. Best growth of the yersinia occurred on MacConkey agar, followed by growth on SS agar; none of the strains of either species developed colonies on brilliant green agar. The Y. pseudotuberculosis strains developed only one type of colony on MacConkey, SS, EMB, Hektoen, and XLD media whereas Y. enterocolitica exhibited more than one type of colony on all of the media except MacConkey and SS agar. The 'lactose-positive' colonies of Y. enterocolitica were especially distinctive on EMB. These were quite dark, with or without a metallic sheen, and closely resembled the colonies of lactose fermenting Escherichia coli on EMB agar. Strains of both Y. enterocolitica and Y. pseudotuberculosis grew better on the differential media at 35 degrees C than at 22 degrees C but the growth of Y. pseudotuberculosis was considerably slower than that of the other species.
对43株小肠结肠炎耶尔森菌和49株假结核耶尔森菌在常用于分离和鉴别肠道细菌的培养基上的培养特性进行了研究。耶尔森菌在麦康凯琼脂上生长最佳，其次是在SS琼脂上生长；两种菌的菌株在亮绿琼脂上均不形成菌落。假结核耶尔森菌菌株在麦康凯、SS、伊红美蓝、赫克托恩和XLD培养基上仅形成一种菌落，而小肠结肠炎耶尔森菌在除麦康凯和SS琼脂外的所有培养基上均表现出不止一种菌落类型。小肠结肠炎耶尔森菌的“乳糖阳性”菌落在伊红美蓝琼脂上尤为明显。这些菌落颜色很深，有或没有金属光泽，与伊红美蓝琼脂上乳糖发酵大肠杆菌的菌落非常相似。小肠结肠炎耶尔森菌和假结核耶尔森菌的菌株在35℃的鉴别培养基上比在22℃时生长更好，但假结核耶尔森菌的生长比另一种菌慢得多。
