Results 21 to 30 of about 1,547 (180)

Antibacterial activity of Rubia tinctorum extracts. [PDF]

open access: yesRecords of Pharmaceutical & Biomedical Sciences, 2022
Rubia tinctorum a root belonging to family Rubiaceae was evaluated for the antibacterial activity against a number of bacteria. We determine antibacterial activity of Alizarin, Purpurin, methanol and chloroform extracts of Rubia tinctorum roots against ...
Aya El Tanahy
doaj   +1 more source

Zur Kenntniss des Purpurins. Verwandlung des Purpurins in Chinizarin [PDF]

open access: yesBerichte der deutschen chemischen Gesellschaft, 1877
n ...
Schunck, E., Roemer, H.
openaire   +2 more sources

Anthraquinone Production from Cell and Organ Cultures of Rubia Species: An Overview

open access: yesMetabolites, 2022
The Rubia genus includes major groups of medicinal plants such as Rubia cordifolia, Rubia tinctorum, and Rubia akane. They contain anthraquinones (AQs), particularly alizarin and purpurin, which have pharmacological effects that are anti-inflammatory ...
Hosakatte Niranjana Murthy   +3 more
doaj   +1 more source

High performance liquid chromatography as a micro-destructive technique for the identification of anthraquinone red dyestuffs in cultural heritage objects

open access: yesChemistry Teacher International, 2023
This article describes two of the most common natural sources of red anthraquinones that have been used since antiquity for textile dyeing and as lake pigments, namely cochineal insect and the roots of Rubia and Relbunium plants.
Careaga Valeria P.   +3 more
doaj   +1 more source

Ueber Alizarin und Purpurin [PDF]

open access: yesBerichte der deutschen chemischen Gesellschaft, 1870
n ...
Graebe, C., Liebermann, C.
openaire   +1 more source

Purpurin Esters Containing a Saturated Cyclic Fragment with Antimicrobial Activity

open access: yesEurasian Chemico-Technological Journal, 2020
The present study is a continuation of the scientific research works for the synthesis of anthraquinonе-containing derivatives with cyclic ring systems by the interaction of 1,2,4-trihydroxyanthraquinone (purpurin) with cyclic carboxylic acid chlorides ...
Т. V. Kharlamova   +2 more
doaj   +1 more source

Effects of Salt Stress and Inoculation Ratios in Cell Cultures of Rubia tinctorum L.

open access: yesSakarya Üniversitesi Fen Bilimleri Enstitüsü Dergisi, 2017
In this study, salt stress was implemented to callus and cell suspension cultures of Rubia tinctorum L. at 100 mM and 200 mM concentrations and the effects on fresh and dry weights (g), relative dry weight ratios, and alizarin and purpurin contents (mg/g
Pınar Nartop, Şeref Akay, Aynur Gürel
doaj   +1 more source

Structure-Antioxidative and Anti-Inflammatory Activity Relationships of Purpurin and Related Anthraquinones in Chemical and Cell Assays

open access: yesMolecules, 2017
Anthraquinone (9,10-anthraquinone) and several hydroxy derivatives, including purpurin (1,2,4-trihydroxyanthraquinone), anthrarufin (1,5-dihydroxyanthraquinone), and chrysazin (1,8-dihydroxyanthraquinone), were evaluated for antioxidative and anti ...
Woo Nam   +3 more
doaj   +1 more source

Promoting photocatalytic CO2 reduction with a molecular copper purpurin chromophore

open access: yesNature Communications, 2021
Designing highly efficient chromophores comprising earth-abundant elements is essential for both light harvesting and electron transfer reactions.
Huiqing Yuan   +4 more
doaj   +1 more source

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