THE ADVANTAGES OF REVERSED-PHASE HPLC IN THE QUANTITATIVE ANALYSIS OF FOODS AND BEVERAGES

1979 ◽  
pp. 411-439
Author(s):  
Daniel Popovich ◽  
Derek Southern
Keyword(s):  
Quantitative Analysis ◽  
Reversed Phase ◽  
Reversed Phase Hplc

scholarly journals Flavonoids from Lonchocarpus muehlbergianus

2004 ◽  
Vol 76 (4) ◽  
pp. 651-661 ◽  
Author(s):  
Aderbal F. Magalhães ◽  
Ana M.G.A. Tozzi ◽  
Eva G. Magalhães ◽  
Ivani S. Blanco ◽  
Maria-Del-Pilar C. Soriano
Keyword(s):  
Quantitative Analysis ◽  
Spectral Data ◽  
13C Nmr ◽  
2D Nmr ◽  
Reversed Phase ◽  
Light Petroleum ◽  
Natural Occurrence ◽  
Reversed Phase Hplc ◽  
First Time

The light petroleum extract from the roots of Lonchocarpus muehlbergianus Hassl contained nine flavonoids, including six new ones. These are 2,4-cis-2,4,5,8-tetramethoxy-(2´´,3´´:6,7)-furanoflavan; 2,4-cis-4-hydroxy-2,5,8-trimethoxy-(2´´,3´´:6,7)-furanoflavan; 2,4-cis-2-prenyloxy-4,5,8-trimethoxy-(2´´,3´´:6,7)-fu-ranoflavan; 2,4-cis-2-prenyloxy-4-hydroxy-5,8-dimethoxy-(2´´,3´´:6,7)-furanoflavan; 2',5',6'-trimethoxy-9-(1,1-dimethylallyoxy)-[2´´,3´´:3´,4´]-furanochalcone; 5,6-dimethoxy-(2´´,3´´:7,8)-furanoflavone, identi-fied by analysis of their spectral data (UV, IR, ¹H and 13C NMR, 2D-NMR, NOE and MS). The natural occurrence of 2,4-dioxygenated flavan derivatives is being reported for the first time. Quantitative analysis of the petrol extract, by using reversed-phase HPLC, showed that the most abundant flavonoid in the extract is 2,4-cis-2,4,5,8- tetramethoxy-(2´´,3´´:6,7)-furanoflavan.

Reversed-phase HPLC/FD method for the quantitative analysis of the neurotoxin BMAA (β-N-methylamino-l-alanine) in cyanobacteria

Toxicon ◽  
2012 ◽  
Vol 59 (3) ◽  
pp. 379-384 ◽  
Author(s):  
R.C. Cervantes Cianca ◽  
M.S. Baptista ◽  
Luís Pinto da Silva ◽  
V.R. Lopes ◽  
V.M. Vasconcelos
Keyword(s):  
Quantitative Analysis ◽  
Reversed Phase ◽  
Reversed Phase Hplc

scholarly journals A Reversed-phase HPLC Study of the Complexation of Benzene Derivatives Guest Molecules with 5,17-bis(N-Tolyliminomethyl)-25,27-dipropoxycalix[4]arene in Acetonitrile–Water Solution

1999 ◽  
Vol 23 (1) ◽  
pp. 60-61
Author(s):  
O. I. Kalchenko ◽  
A. V. Solovyov ◽  
J. Lipkowski ◽  
V. I. Kalchenko
Keyword(s):  
Stability Constants ◽  
Water Solution ◽  
Reversed Phase ◽  
Benzene Derivatives ◽  
Reversed Phase Hplc ◽  
Guest Molecules ◽  
Hplc Study

Stability constants of the host–guest complexes of 5,17-bis( N-tolyliminomethyl)-25,27-dipropoxycalix[4]arene with benzene derivatives were determined by reversed-phase HPLC in acetonitrile–water solution.

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