Identification and Quantification of Phenolic Acids in Macrotyloma uniflorum by Reversed Phase-HPLC

2008 ◽  
Vol 3 (4) ◽  
pp. 165-172 ◽  
Author(s):  
S.M.A. Kawsar ◽  
E. Huq ◽  
N. Nahar ◽  
Y. Ozeki
Keyword(s):  
Phenolic Acids ◽  
Reversed Phase ◽  
Reversed Phase Hplc ◽  
Macrotyloma Uniflorum ◽  
Identification And Quantification

scholarly journals HPLC-DAD of phenolics in bryophytes Lunularia cruciata, Brachytheciastrum velutinum and Kindbergia praelonga

2008 ◽  
Vol 73 (12) ◽  
pp. 1161-1167 ◽  
Author(s):  
Nebojsa Jockovic ◽  
Paula Andrade ◽  
Patrícia Valentão ◽  
Marko Sabovljevic
Keyword(s):  
Phenolic Acids ◽  
Reversed Phase ◽  
Array Detector ◽  
Diode Array ◽  
Coumaric Acid ◽  
Reversed Phase Hplc ◽  
Diode Array Detector ◽  
Moss Species ◽  
Methanolic Extracts ◽  
New Compounds

The chemistry of bryophytes is not well known. The available data indicate interesting chemical constitutions of some bryophyte species, i.e., active and new compounds are to be found within bryophytes, especially liverworts. In this study, one liverwort and two moss species were studied: Lunularia cruciata (L.) Dumort, Brachytheciastrum velutinum (Hedw) Ignatov & Huttunen and Kindbergia praelonga (Hedw) Ochyra. The phenolic compositions of these bryophyte species have not hitherto been reported. Their methanolic extracts were analyzed by reversed-phase HPLC, coupled to a diode-array detector (DAD). Luteolin-7-O-glucoside and quercetin were found in the L. cruciata extract. The extract obtained from B. velutinum contained four phenolic acids (4-O-caffeoylquinic, 5-O-caffeoylquinic, caffeic and ellagic acids) and three flavonoids (apigenin-7-O-glucoside, luteolin and apigenin). The K. praelonga extract was characterized by the presence of several phenolic acids and their derivatives (4-O-caffeoylquinic, 5-O-caffeoylquinic, caffeic, p-coumaric, ferulic and ellagic acids, and caffeic and p-coumaric acid derivatives) and three flavonoids (apigenin-7-O-glucoside, luteolin, apigenin and an unidentified flavanone). .

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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