Results 21 to 30 of about 33,276 (306)

Optimization of Microwave-assisted Extraction Process of Anthraquinones from Aloe vera by Response Surface Method and Analysis of Its Antioxidant Activity

open access: yesShipin gongye ke-ji, 2023
In order to improve the extraction amount of anthraquinones from Aloe vera peel, this study used microwave-assisted extraction method to extract anthraquinones from Aloe vera, and investigated the effects of different ethanol concentrations, extraction ...
Youhang SHI, Qingyao LÜ, Shirong JIAO
doaj   +1 more source

PHYTOCHEMICAL AND PHARMACOLOGICAL ASPECTS OF ANTHRAQUINONES OF RHEUM AUSTRALE D. DON

open access: yesJurnal Farmasi Sains dan Praktis, 2020
Anthraquinones are phenolic compounds known best for their laxative activity. Rheum australe D. Don (Indian rhubarb, Polygonaceae) is a prominent medicinal plant with anthraquinones as the bioactive compounds, among a few others.
Dwi Hartanti, Arinda Nur Cahyani
doaj   +1 more source

The Interplay of Ascorbic Acid with Quinones-Chelators—Influence on Lipid Peroxidation: Insight into Anticancer Activity

open access: yesAntioxidants, 2022
Ascorbic acid is a multifaceted compound that can perform both antioxidant and pro-oxidant activities in the redox reactions induced by transition metal ions, so its role in nature and especially in the human body is still the subject of debate.
Olga Yu. Selyutina   +4 more
doaj   +1 more source

Effects of Anthraquinones on Immune Responses and Inflammatory Diseases

open access: yesMolecules, 2022
The anthraquinones (AQs) and derivatives are widely distributed in nature, including plants, fungi, and insects, with effects of anti-inflammation and anti-oxidation, antibacterial and antiviral, anti-osteoporosis, anti-tumor, etc.
Dandan Xin   +4 more
doaj   +1 more source

Secondary Metabolites from the Genus Eurotium and Their Biological Activities

open access: yesFoods, 2023
Eurotium is the teleomorph genus associated with the section Aspergillus. Eurotium comprises approximately 20 species, which are widely distributed in nature and human environments.
Jiantianye Deng   +8 more
doaj   +1 more source

Isolation and synthesis of anthraquinones and related compounds of Rubia cordifolia [PDF]

open access: yesJournal of the Serbian Chemical Society, 2005
Anthraquinones and their glycosides, along with other compounds, have been isolated and characterized from the acetone:water (1:1) percolation of dried roots of Rubia cordifolia.
Singh Ram, Geetanjali
doaj   +3 more sources

Non-Natural Linker Configuration in 2,6-Dipeptidyl-Anthraquinones Enhances the Inhibition of TAR RNA Binding/Annealing Activities by HIV-1 NC and Tat Proteins [PDF]

open access: yes, 2018
The HIV-1 nucleocapsid (NC) protein represents an excellent molecular target for the development of antiretrovirals by virtue of its well-characterized chaperone activities, which play pivotal roles in essential steps of the viral life cycle. Our ongoing
Caliendo, Giuseppe   +16 more
core   +2 more sources

6,7-Dimethoxy-1,4-anthraquinone [PDF]

open access: yesActa Crystallographica Section E Structure Reports Online, 2008
The molecule of the title compound, C16H12O4, is almost planar; the two methoxy groups are slightly out of the plane of the anthraquinone ring system, with C—C—O—C torsion angles of −6.25 (19) and −10.22 (19)°. In the crystal structure, the molecules adopt a herringbone arrangement and form face-to-face slipped antiparallel π–π stacking interactions ...
Takeshi Kawase   +3 more
openaire   +3 more sources

Mechanisms of HIV-1 Nucleocapsid Protein Inhibition by Lysyl-Peptidyl-Anthraquinone Conjugates [PDF]

open access: yes, 2016
The Nucleocapsid protein NCp7 (NC) is a nucleic acid chaperone responsible for essential steps of the HIV-1 life cycle and an attractive candidate for drug development.
Alice Sosic   +12 more
core   +2 more sources

Comparative density functional theory study on the relative gas phase enthalpies and free energies of formation for the mono- through hepta-halogenated (X=F, Cl, Br) anthraquinones [PDF]

open access: yes, 2010
Gas phase standard state (298.15 K, 1 atmosphere) relative enthalpies and free energies of formation were calculated for all mono- through hepta-halogenated (X=F, Cl, Br) anthraquinone congeners using the B3LYP, BHandHLYP, M062X, PBE0, and B97D density ...
Kaya Forest, Sierra Rayne
core   +2 more sources

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