نتایج جستجو برای: hplc dad

تعداد نتایج: 34855  

Journal: :Cosmetics 2022

Morus nigra L. is a species popularly known in the Northeast of Brazil as “amora miúra”. This source flavonoids with antioxidant activity. Antioxidants play an important role preservation cosmetic formulations, and they neutralize free radicals. The objective this study was to develop topical emulsion containing leaf extract L., well evaluate stability, antibacterial activities formulations. A ...

Journal: :Diversity 2022

Secondary metabolites, in addition to playing an essential role the adaptation of plants environment and phytochemical responses recovery processes stress conditions, are base material healing effect medicinal plants. In this study, growth conditions localities origin Ageratina petiolaris on phenolic compounds content antioxidant activity was evaluated; plant is used for purposes Oaxaca, Mexico...

Journal: :Forests 2021

The forest understory is rich in fruit-bearing trees and shrubs. They include both native species invasive alien plant (IAPS). One of the most spreading IAPS black cherry (Prunus serotina E.). Problems with invasiveness P. well known many European countries. However, there are very few studies related to this IAPS. This article aims fill gap research on bioactive compounds fruits thus start a d...

Journal: :Journal of Functional Food and Nutraceutical 2022

This research aimed to develop and validate a reversed phase-high performance liquid chromatography method determine phenolic compounds in dried flowers extract simultaneously. The was divided into two parts: (1) optimization of the separation condition employing Box Behnken design, (2) validation test including assessment for precision, accuracy, applicability High-Performance Liquid Chromatog...

Journal: :Zeitschrift fur Naturforschung. C, Journal of biosciences 2001
N Youhnovski C Werner M Hesse

A new hydroxycinnamoyl polyamine derivative, N,N',N"-triferuloylspermidine (= (E)-N-(4-aminobutyl) -3,3',3"-tris(4-hydroxy-3-methoxyphenyl)-N,N',N"- (butane-1,4-diyl)tris [prop-2-enamide]) (1) was detected in the H2O/MeOH extract of pollen from Hippeastrum x hortorum. The compound was identified by on-line-coupled high-performance liquid chromatography and atmospheric-pressure chemical-ionizati...

2015
Janete Quelhas-Santos Benedita Sampaio-Maia Fernando Remião Paula Serrão Isabel Soares-Silva Gary V. Desir Manuel Pestana

Renalase was recently described as a new flavoprotein that functions as FAD/NADH-dependent oxidase and, in contrast to other monoamine oxidases, is secreted into plasma and urine. Recombinant renalase was found to exert powerful and rapid hypotensive effects when administered intravenously on rats and this was suggested to be mediated by circulating catecholamines degradation. However there is ...

2013
Rasha A. Shaalan Tarek S. Belal

A simple, rapid, and highly selective HPLC-DAD method was developed for the simultaneous determination of diclofenac sodium (DIC) and diflunisal (DIF) in pure form and in their combined formulation. Effective chromatographic separation was achieved using a Zorbax SB-C8 (4.6×250 mm, 5 μm particle size) column with a mobile phase composed of 0.05 M phosphoric acid, acetonitrile, and methanol in t...

Journal: :Acta Chromatographica 2021

Abstract Citrus reticulata cv. Chachiensis, a traditional Chinese herb, has extensive medicinal and edible effects. 3?,4?,5,6,7,8-Hexamethoxyflavone (HM) 5,6,7,8,4?-pentamethoxyflavone (PM) are main bioactive compounds in which have been reported to possess various biological properties. In this study, supercritical CO 2 extraction (SCE) high-speed countercurrent chromatography (HSCCC) were uti...

2012
Pramod SINGH G. J. PANT

Rheum species are medicinally important herbs, posses several type of biological activities due to the presence of anthraquinone derivatives. Several HPLC methods have been used for sepeatation of anthraquinone of Rheum Species. In most cases anthraquinones were separated using C18 column as a stationary phase, acetonitrile, water and methanol with or without acid as mobile phase at 1.0 ml/min ...

Journal: :Food Science and Technology 2021

The aim of this study was to developed HPLC simultaneous analysis method for the determination Caffeoylquinic acid isolated from leaf Eribotrya japonica Lindl. extract. phenolic compounds in E. leaves were and identified by HPLC, NMR, Mass etc. quantitative carried out HPLC-DAD using C18 column with gradient elution water acetonitrile at 280 nM 60 min. successfully validated specificity, LOD (l...

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