scholarly journals Quantitative and Chemical Fingerprint Analysis for the Quality Evaluation of Isatis indigotica based on Ultra-Performance Liquid Chromatography with Photodiode Array Detector Combined with Chemometric Methods

2012 ◽  
Vol 13 (7) ◽  
pp. 9035-9050 ◽  
Author(s):  
Yan-Hong Shi ◽  
Zhi-Yong Xie ◽  
Rui Wang ◽  
Shan-Jun Huang ◽  
Yi-Ming Li ◽  
...  
Keyword(s):  
Liquid Chromatography ◽  
Quality Evaluation ◽  
Ultra Performance Liquid Chromatography ◽  
Array Detector ◽  
Chemometric Methods ◽  
Isatis Indigotica ◽  
Fingerprint Analysis ◽  
Chemical Fingerprint ◽  
Photodiode Array Detector ◽  
Photodiode Array

scholarly journals Acylated Flavonoid Glycosides are the Main Pigments that Determine the Flower Colour of the Brazilian Native Tree Tibouchina pulchra (Cham.) Cogn.

Molecules ◽  
2019 ◽  
Vol 24 (4) ◽  
pp. 718 ◽  
Author(s):  
Fernanda Rezende ◽  
Marcelo Ferreira ◽  
Mads Clausen ◽  
Magdalena Rossi ◽  
Claudia Furlan
Keyword(s):  
Liquid Chromatography ◽  
High Performance ◽  
Flower Colour ◽  
Metabolite Profile ◽  
Ultra Performance Liquid Chromatography ◽  
Flavonoid Glycosides ◽  
Array Detector ◽  
Flight Mass Spectrometry ◽  
Photodiode Array Detector ◽  
Photodiode Array

Tibouchina pulchra (Cham.) Cogn. is a plant native to Brazil whose genus and family (Melastomataceae) are poorly studied with regards to its metabolite profile. Phenolic pigments of pink flowers were studied by ultra-performance liquid chromatography with a photodiode array detector and electrospray ionization quadrupole time-of-flight mass spectrometry. Therein, twenty-three flavonoids were identified with eight flavonols isolated by preparative high-performance liquid chromatography and analysed by one- and two-dimensional nuclear magnetic resonance. Kaempferol derivatives were the main flavonols, encompassing almost half of the detected compounds with different substitution patterns, such as glucoside, pentosides, galloyl-glucoside, p-coumaroyl-glucoside, and glucuronide. Concerning the anthocyanins, petunidin p-coumaroyl-hexoside acetylpentoside and malvidin p-coumaroyl-hexoside acetylpentoside were identified and agreed with previous reports on acylated anthocyanins from Melastomataceae. A new kaempferol glucoside was identified as kaempferol-(2′′-O-methyl)-4′-O-α-d-glucopyranoside. Moreover, twelve compounds were described for the first time in the genus with five being new to the family, contributing to the chemical characterisation of these taxa.

Quantitative analysis of fourteen synthetic dyes in jelly and gummy candy by ultra performance liquid chromatography

2014 ◽  
Vol 6 (15) ◽  
pp. 5872-5878 ◽  
Author(s):  
Yi Yang ◽  
Jing Zhang ◽  
Bing Shao
Keyword(s):  
Liquid Chromatography ◽  
Quantitative Analysis ◽  
Simultaneous Determination ◽  
Analytical Method ◽  
Ultra Performance Liquid Chromatography ◽  
Array Detector ◽  
Synthetic Dyes ◽  
Photodiode Array Detector ◽  
Photodiode Array

An analytical method was developed for the simultaneous determination of 14 dyes in jelly and gummy candy using ultra performance liquid chromatography with a photodiode array detector.

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