Ontology type: schema:ScholarlyArticle
2001-03
AUTHORSX.-B. Zhang, C.-C. Guo, S.-H. Chen, G.-L. Shen, R.-Q. Yu
ABSTRACTFor preparing a berberine-sensitive electrode, 5,10,15,20-tetrakis[2-(2,3,4,6-tetraacetyl-β-D-glucopyranosyl)-1-O-phenyl]porphyrin (T(o-glu)PPH2) was synthesized from the reaction of pyrrole with ortho-acetylglycosylated benzaldehyde by Lindsay’s method. The electrode based on T(o-glu)PPH2 with an optimized membrane composition exhibits Nernstian response to berberine in the concentration range 2.4 × 10–7–5.0 × 10–3 mol L–1, with a pH range from 3.9 to 10.2, and a fast response time of 30 s. The electrode shows fair selectivity towards berberine with respect to common co-existing species. T(o-glu)PPH2 shows better potentiometric response characteristics comparing to chloro[5,10,15,20-tetrakis[2-(2,3,4,6-tetraacetyl-β-D-glucopyranosyl)-1-O-phenyl]-porphinato]-manganese (MnT(o-glu)PPCl) and better selectivity towards berberine than tetraphenylporphyrin (TPPH2). The effect of the composition of the electrode membrane has been studied and the experimental conditions optimized. The contents of berberine in pharmaceutical tablets were determined by direct potentiometry and the results agreed with values obtained by the pharmacopoeia method. More... »
PAGES422-427
http://scigraph.springernature.com/pub.10.1007/s002160000631
DOIhttp://dx.doi.org/10.1007/s002160000631
DIMENSIONShttps://app.dimensions.ai/details/publication/pub.1010571388
PUBMEDhttps://www.ncbi.nlm.nih.gov/pubmed/11270222
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