A NEW MODIFICATION OF CARBAZOLE ANALYSIS - APPLICATION TO HETEROPOLYSACCHARIDES
A NEW MODIFICATION OF CARBAZOLE ANALYSIS - APPLICATION TO HETEROPOLYSACCHARIDES
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DOI：
10.1016/0003-2697(68)90154-1
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发表时间：
1968-01-01
影响因子：
2.9
通讯作者：
JEANES, A
中科院分区：
文献类型：
--
作者：
KNUTSON, CA;JEANES, A
当在硼酸盐存在下于55°运行时，咔唑分析对d-半乳糖醛酸、d-甘露糖醛酸和l-古罗糖醛酸的灵敏度增加，而对d-葡萄糖醛酸的灵敏度大大降低。这些反应条件下的值与咔唑分析的其他修改的值的比较揭示了在任何限定的条件下每种酸的反应的高度特异性。这种特异性对未知糖醛酸的鉴定具有参考价值。新的改进方法特别适用于杂多糖中d-甘露糖醛酸的测定。
The carbazole analysis when run at 55° in the presence of borate gives increased sensitivity for d-galacturonic, d-mannuronic, and l-guluronic acids, while greatly decreasing that of d-glueuronic acid. Comparison of values from these reaction conditions with values from other modifications of the carbazole analysis reveals a high degree of specificity of the reaction for each acid under any defined set of conditions. This specificity is of value for identification of unknown uronic acids. The new modification is especially useful for determination of d-mannuronic acid in heteropolysaccharides.