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改良磷酸盐缓冲液 PSB
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更新时间:2016-06-13  |  阅读:1532

详情介绍

改良磷酸盐缓冲液 PSB Phosphate Saline Buffer,Modified 250g 用于小肠结肠炎耶尔森氏菌增菌培养 (GB标准)

用途:用于小肠结肠炎耶尔森氏菌增菌培养

改良磷酸盐缓冲液 PSB 配方:(g/L)
磷酸氢二钠
磷酸二氢钠
山梨醇
氯化钠
3号胆盐
pH值7.6 ± 0.2 
8.23 
1.2 
10.0 
5.0 
1.5
25℃
原理:
      山梨醇提供碳氮源,磷酸氢二钠和磷酸二氢钠为缓冲液,胆盐抑制革兰氏阳性菌,氯化钠提供细胞所需要的渗透压。  
用法:
      称取本品  25.93g ,加热搅拌溶解于 1000ml 蒸馏水中,分装 ,每瓶 225ml,121℃ 高压灭菌 15 分 钟备用。
质量控制:

 在25℃培养18-24小时

质控菌株
ATCC
生长情况
小肠结肠炎耶尔森氏菌
 
(10-7)+++
金葡萄球菌
25923
-
大肠杆菌
25922
(10-7)+++
沙门氏菌
14028
(10-7)+++

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