食品科学 ›› 2008, Vol. 29 ›› Issue (1): 225-227.

• 分析检测 • 上一篇    下一篇

双波长比值光谱法测定5’-鸟苷酸钠、5’-肌苷酸钠、5’-尿苷酸钠含量

 杜建中, 杨春梅, 李自信, 冯世生, 李翠   

  1. 湛江师范学院化学科学与技术学院; 湛江师范学院化学科学与技术学院 广东湛江524048; 广东湛江524048;
  • 出版日期:2008-01-15 发布日期:2011-07-28

Determination of Guanosine 5’-monophosphate, Inosine 5’-monophosphate and Uridine 5’-monophosphate by Dual-wavelength Ratio Spectrometry

 DU  Jian-Zhong, YANG  Chun-Mei, LI  Zi-Xin, FENG  Shi-Sheng, LI  Cui   

  1. School of Chemistry Science and Technology, Zhanjiang Normal University, Zhanjiang 524048, China
  • Online:2008-01-15 Published:2011-07-28

摘要: 依据5’-鸟苷酸钠、5’-肌苷酸钠和5’-尿苷酸钠三组分的比值光谱特征,以尿苷酸钠为干扰组分时,选择258、285、244、280nm作为测定鸟苷酸钠和肌苷酸钠的波长;以肌苷酸钠为干扰组分时,选择211、241nm作为测定尿苷酸钠的波长。结果显示鸟苷酸钠在0.15~5mg/100ml,肌苷酸钠在0.2~6mg/100ml,尿苷酸钠在0.25~4mg/100ml范围具有良好的线性关系,平均回收率分别为100.2%、100.2%和99.5%。本法具有测定波长少、计算简单、光谱"分离"能力强以及能在低档分光光度计上实现、易于推广等特点。

关键词:  , 双波长比值光谱法, 5&rsquo, -鸟苷酸钠, 5&rsquo, -肌苷酸钠, 5&rsquo, -尿苷酸钠

Abstract: According to the respective features of the ratio spectra of the guanosine 5’-monophosphate(5’-UMP), inosine 5’-monophosphate(5’-IMP) and uridine 5’-monophosphate(5’-UMP) and taking 5’-UMP as disturbance component, 258, 285, 244 and 280 nm were chosen as the determining wavelengths of the 5’-GMP and 5’-IMP. Taking the 5’-IMP as disturbance component, 211 and 241 nm were chosen as the determining wavelengths of the 5’-UMP. It showed that for the three components good linear correlationships exit as 5’-GMP(0.15~5 mg/100 ml), 5’-IMP(0.2~6 mg/100 ml), 5’-UMP (0.25~4 mg/ 100 ml). The average recoveries are 100.2%, 100.2% and 99.5% respectively. The method is simple and practical with fewer determination wavelengths and powerful spectral resolution and can be performed on a lower level instrument. It is easy to generalize application.

Key words: dual-wavelength ratio spectrometry; guanosine 5&rsquo, -monophosphate(G); inosine 5&rsquo, -monophosphate(I); uridine 5&rsquo, -monophosphate(U);