Results 91 to 100 of about 13,953 (273)

Qualitative and quantitative analysis methods for quality control of rhubarb in Taiwan’s markets

Frontiers in Pharmacology
Introduction: Rhubarb is a traditional Chinese medicine (TCM) used to release heat and has cathartic effects. Official rhubarb in Taiwan Herbal Pharmacopeias 4th edition (THP 4th) and China Pharmacopeia 2020 (CP 2020) are the roots and rhizomes of Rheum ...
Thanh-Thuy-Dung Au, Yu-Ling Ho, Yuan-Shiun Chang   +2 more
doaj   +1 more source

SPE-UHPLC-FLD Method for the Simultaneous Determination of Five Anthraquinones in Human Urine Using Mixed-Mode Bis(tetraoxacalix[2]arene[2]triazine) Modified Silica as Sorbent

Journal of Analytical Methods in Chemistry, 2017
The five anthraquinones compounds (including aloe-emodin, emodin, physcion, chrysophanol, and rhein) are regarded as the main effective ingredients in rhubarb (Dahuang in Chinese, one of the commonly used Chinese herbal medicines). In this work, a simple
Kai Hu, Yonghui Qiao, Zhifen Deng, Mingxia Wu, Wei Liu   +4 more
doaj   +1 more source

Secondary Metabolites from Rubiaceae Species

Molecules, 2015
This study describes some characteristics of the Rubiaceae family pertaining to the occurrence and distribution of secondary metabolites in the main genera of this family. It reports the review of phytochemical studies addressing all species of Rubiaceae,
Daiane Martins, Cecilia Veronica Nunez
doaj   +1 more source

Precisely Constructed Asymmetric Coordination Tuned High‐Spin Co Sites for Sacrificial Agent‐Free H2O2 Photocatalytic Production

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
The asymmetric Co–N2O2 coordination structure was precisely constructed through the assembly of Salen COF. The high‐spin (t2g4eg3$$ {\mathrm{t}}_{2\mathrm{g}}^4{\mathrm{e}}_{\mathrm{g}}^3 $$) Co center enables Pauling‐type O2 adsorption, inhibiting the cleavage of the O–O bond. π‐d conjugation enhances charge separation and transport.
Wenhui Qi, Shaonan Gu, Yinan Wang, Wenhao Yin, Bin Sun, Guowei Zhou   +5 more
wiley   +1 more source

SCREENING OF ANTIMICROBIAL PROPERTIES OF ETHANOLIC EXTRACTS FROM SOME KINDS OF RAW MATERIALS WITH QUINONEDERIVATIVES [PDF]

Annals of Mechnikov's Institute, 2014
This paper presents data on screening of antimicrobial properties of extracts from some kinds of raw materials (18 plants) with hydroquinone, naphtoquinone or anthraquinone derivatives.
Boyko N.N., Zaytsev A.I., Osolodchenko T. P.   +2 more
doaj  

Separation of Protein-Binding Anthraquinones from Semen Cassiae Using Two-Stage Foam Fractionation

, 2019
Anthraquinones are compounds of high medicinal value in many plants. Based on their good protein binding affinity, foam fractionation was attempted to separate them using proteins in the aqueous extract of Semen Cassiae as collectors.
Ye Sun, Zeying Wu, Min Wang, Rui Li, Yanyan Wang, Linlin Ding, Chuanjun Yue   +6 more
core   +1 more source

Synthesis some 4-substituted 9,10-anthraquinones

, 2020
New 4-substituted 9,10-anthraquinones (6 compouds) with amino derivations fragments were synthesized through the substitution of the bromaminic acid by amines using the Ullmann coupling reaction.
Sabadakh, Oksana, Shupeniuk, Vasyl, Kornii, Yurii, Taras, Tetyana, Luchkevich, Eugene   +4 more
core   +1 more source

Design, Synthesis, and Photophysical Studies of Functionalized Polyaromatic Isonitriles as Visible Light Photoredox Catalysts

European Journal of Organic Chemistry, EarlyView.
A new series of structurally rich polyaromatic isonitriles is presented as photoredox catalysts. Their photophysical properties are investigated by UV–Vis absorption and fluorescence measurements, combined with experimental and theoretical studies to evaluate both ground‐ and excited‐state redox properties.
Cristina Martini, Camilla Russo, Jussara Amato, Carmine Volpe, Francesca Brunelli, Laurence Grimaud, Maxime R. Vitale, Greta Donati, Andrea Basso, Mariateresa Giustiniano   +9 more
wiley   +1 more source

Genome-wide analysis of MYB transcription factors in four Rheum L. plants provides new insights into the synthesis of Anthraquinones

Frontiers in Plant Science
R. tanguticum (Rheum tanguticum Maxim. ex Regel) is a herbaceous plant belonging to Polygonaceae family and Rheum L. genus. It holds considerable value in culinary and medicinal realms, primarily due to their rich Anthraquinones (AQs) content ...
Tao Wang, Tao Wang, Shuo Zhao, Shuo Zhao, Bo Wang, Bo Wang, Jianan Li, Jianan Li, Zengrong Ye, Zengrong Ye, Famei Zhang, Famei Zhang, Huiyuan Ma, Huiyuan Ma, Guoying Zhou, Guoying Zhou   +15 more
doaj   +1 more source

Colon Melanosis in a 15-Year-Old Child: Clinical Observation

Педиатрическая фармакология, 2015
Colon melanosis is a rare pathology which is connected with a long intake of non-steroid anti-inflammatory medicines or purgative drugs containing antraglycozides. Colon melanosis is also detected at liver and pancreas diseases and colon cancer.
M. M. Lokhmatov, A. E. Gaydaenko, A. A. Shavrov, M. O. Volkov   +3 more
doaj   +1 more source