| 查看: 524 | 回复: 0 | ||
| 【悬赏金币】回答本帖问题,作者罗淑芬将赠送您 25 个金币 | ||
[求助]
关于NO测定和计算问题
|
||
|
因为蔬菜组织本身含有亚硝酸盐,无法使用griess试剂法,采用血红蛋白分析法测定蔬菜组织NO,方法如下: NO accumulation was assayed and calculated by following the conversion of oxyhemoglobin (HbO2) to methemoglobin (MetHb) spectrophotometrically at 401 nm and 421 nm, using an extinction coefficient of 77 mm−1 cm−1 (A401 HbO2, A421 MetHb). the samples were homogenized in a mortar with 100 mM K-phosphate buffer (pH 7.0) and 0.6% (w:v) insoluble polyvinylpolypyrrolidone. The extract was clarified by adding powdered activated carbon and centrifuged at 11 000 × g for 10 min at 4 ◦C. The supernatant was filtered through a PTFE Millipore membrane (0.45 m) and immediately assayed for NO. Five minutes before oxyhemoglobin addition, samples were pretreated with catalase (100 U) and superoxide dismutase (100 U) to remove ROS. 问题来了,这个怎么计算结果的? |
» 猜你喜欢
欢迎调剂滁州学院生物与医药专硕
已经有1人回复
086003调剂求助
已经有22人回复
食品科学论文润色/翻译怎么收费?
已经有252人回复
生物与医药调剂名额多,专业范围宽食品生物相关的07,08,09,10都可调
已经有15人回复
淮北师范大学生物医药还有11个调剂名额和资源环境还有10调剂名额,欢迎大家赶紧调剂!
已经有0人回复
食物营养学 电子版
已经有0人回复
电子科技大学(深圳)高等研究院陈明豪课题组招收推免硕士研究生
已经有19人回复
金铜纳米合成
已经有0人回复
求助1977版中国药典,非常感谢!!!
已经有0人回复












回复此楼
10