Results 21 to 30 of about 42,000 (301)

Pierre-Jean Robiquet

open access: yesEducación Química, 2018
Pierre-Jean Robiquet (1780-1840), a French pharmacist, made important contributions in the areas of mineral chemistry, mineral and vegetable pigments, and extractive and analytical chemistry.
Jaime Wisniak
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

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

Alizarin, an Agonist of AHR Receptor, Enhances CYP1A1 Enzyme Activity and Induces Transcriptional Changes in Hepatoma Cells

open access: yesMolecules, 2023
The phytopigment alizarin was previously characterized as an anti-tumor drug owing to its antioxidant or antigenotoxic activities. However, the safety of alizarin is currently still under dispute.
Shengxian Liang   +4 more
doaj   +1 more source

Electrocoagulation of Quinone Pigments

open access: yesMolecules, 2006
Some representative quinones, viz. one naphthoquinone (plumbagin) and five anthraquinones (alizarin, purpurin, chrysazin, emodin, and anthrarufin), were subjected to electrocoagulation.
Duang Buddhasukh   +5 more
doaj   +1 more source

Alizarine [PDF]

open access: yesScientific American, 1878
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openaire   +2 more sources

UPLC-QTOF-MS Identification of the Chemical Constituents in Rat Plasma and Urine after Oral Administration of Rubia cordifolia L. Extract

open access: yesMolecules, 2017
An effective ultra-performance liquid chromatography coupled with the quadrupole time-of-flight tandem mass spectrometry (UPLC/Q-TOF/MS) method was developed for analysing the chemical constituents in rat plasma and urine after the oral administration of
Zuoliang Zheng   +6 more
doaj   +1 more source

It’s Only a Part of the Story: Analytical Investigation of the Inks and Dyes Used in the Privilegium Maius

open access: yesMolecules, 2019
The Privilegium maius is one of the most famous and spectacular forgeries in medieval Europe. It is a set of charters made in the 14th century upon commitment by Duke Rudolf IV, a member of the Habsburg family, to elevate the rank and the prestige of his
Elisa Calà   +10 more
doaj   +1 more source

ALİZARİN KIRMIZI BOYASININ HİDROKSİAPATİT KULLANILARAK ADSORPSİYON PROSESİ İLE GİDERİMİ [PDF]

open access: yes, 2018
Bu çalışmada, hidroksiapatit ile alizarin kırmızı boyasının adsorpsiyon prosesiyle giderimi araştırılmıştır.Çalışmada çalkalama hızının, çözelti pH değerinin, hidroksiapatit miktarının ve başlangıç boya konsantrasyonungiderim verimi üzerine etkisi ortaya
Çifçi, Deniz İzlen   +1 more
core   +1 more source

Alizarin as a New Activator of the Aryl Hydrocarbon Receptor Signaling Pathway

open access: yesNatural Product Communications, 2022
Alizarin (1,2-dihydroxyanthraquinone) is a natural red dye extracted from the roots of Rubia cordifolia L. (family Rubiaceae). Alizarin has been used as a biological red stain for calcium.
Yin-Che Lu   +7 more
doaj   +1 more source

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