还有个问题想请教一下.这个NAC不是特别稳定,特别容易被氧综合掉.所以试剂开封后只能在冷藏密封避光保存一年.因为wako上面写着solubility in water,所以我就用水溶解,制成终浓度为1M的储备液.对于储备液的保存我也是4度冷藏密封避光保存,避免经常打开,这样保存可以吗?大概能保存多久呢?我问了wako公司的engineer,他们说对于储备液的保存没有做过相关稳定性试验.
在小日本的一个网站上,看到一套ROS检测试剂盒的说明书,该试剂盒包含了NAC,里面提到:
All reagents are shipped on dry ice. Upon receipt, the kit should be stored at -20°C, or -80°C for long term storage. When stored properly, these reagents are stable for at least twelve months. Avoid repeated freezing and thawing.