Results 71 to 80 of about 4,357 (177)

Seasonal Effect on the Chemical Composition of Lippia alba Volatile Chemotypes

Chemistry &Biodiversity, Volume 23, Issue 9, September 2026.
L. alba, a Brazilian medicinal species, is known for its volatile chemotypes, with fewer studies of its nonvolatile composition. Chemical characterization via GC‐MS and LC‐MS of five individuals, during the rainy and dry season, confirm the variability of the volatile composition but the nonvolatile composition was similar, with a discrete seasonal ...
Marcelino Santiago Barroso Neto, Erilene Nayrã Mendonça Brito Lopes, Marcia Ortiz Mayo Marques, Alex Aparecido Rosini Silva, Patricia de Oliveira Carvalho, Alexandra Christine Helena Frankland Sawaya   +5 more
wiley   +1 more source

LC-MS-BASED IDENTIFICATION OF BIOACTIVE COMPOUNDS FROM THE ETHANOLIC LEAF EXTRACT OF Pellacalyx fimbripetalus Korth

Al-Ulum
The ethanolic leaf extract of Pellacalyx fimbripetalus (locally Tabuluh) was analyzed by Liquid Chromatography–Mass Spectrometry (LC-MS) to profile its bioactive constituents.
Nikho Prasetyo Pratama, Muhammad Fauzi, Nily Su’aida   +2 more
doaj   +1 more source

Comprehensive Quality Assessment Based Specific Chemical Profiles for Geographic and Tissue Variation in Gentiana rigescens Using HPLC and FTIR Method Combined with Principal Component Analysis

Frontiers in Chemistry, 2017
Roots, stems, leaves, and flowers of Longdan (Gentiana rigescens Franch. ex Hemsl) were collected from six geographic origins of Yunnan Province (n = 240) to implement the quality assessment based on contents of gentiopicroside, loganic acid, sweroside ...
Jie Li, Jie Li, Ji Zhang, Yan-Li Zhao, Heng-Yu Huang, Yuan-Zhong Wang   +5 more
doaj   +1 more source

Phenolic Profiling and Bioactivity Evaluation of Stachys aleurites Extracts: LC–ESI–MS/MS Characterization, Antioxidant Capacity, and Enzyme Inhibitory Potential

Chemistry &Biodiversity, Volume 23, Issue 9, September 2026.
Solvent polarity shapes the phytochemical and bioactivity profile of Stachys aleurites. Methanol extraction enriches phenolics, especially verbascoside and chlorogenic acid, and enhances antioxidant and enzyme inhibitory activities, whereas the aqueous extract shows selective metal‐chelating and BChE inhibitory potential. ABSTRACT Natural products rich
Fatma Ozlem Kargin Solmaz, Cengiz Sarikurkcu, Bektaş Tepe   +2 more
wiley   +1 more source

Atribuição inequívoca de deslocamentos químicos de RMN de ¹H e 13C de plumierídeo isolado da Allamanda cathartica Complete assignments of chemical shifts of the hydrogen and carbon-13 atoms of plumieride isolated from Allamanda cathartica

Química Nova, 1997
There are NMR data of ¹H and 13C of the iridoid plumieride, but controversy related to the assignments of the protons H-3 or H-10 and carbons C-6 or C-7 and C-3 or C-10 are described in the literature.
Angela Malheiros, Ivânia T. A. Schuquel, Gentil José Vidotti   +2 more
doaj   +1 more source

Phytochemical Analysis Using LC–MS/MS and Anticancer Activity of Asphodelus tenuifolius Roots: Cell Cycle Arrest, Apoptosis, and In Silico Insights

Chemistry &Biodiversity, Volume 23, Issue 9, September 2026.
LC–HRMS/MS profiling of the hydroethanolic root extract of A. tenuifolius identifies 58 metabolites, including luteolin, emodin, luteolin‐7‐O‐β‐D‐glucoside, subaphyllin, and N‐trans‐feruloyltyramine. Integrated biological and computational analyses reveal apoptosis induction, G0/G1 cell‐cycle arrest, and multi‐target interactions, highlighting the ...
Racha Lydia Bouchouka, Farida Larit, Zahia Kabouche, Marlène Debiossat, Laurent Riou, Catherine Ghezzi, Francisco León, Ahmed Kabouche   +7 more
wiley   +1 more source

Polyphenolic and Biogenic Volatile Organic Compound Profiles of Endemic Metallophytes From the Thallium‐Rich Allchar Mining Area

Chemistry &Biodiversity, Volume 23, Issue 9, September 2026.
Six plant taxa endemic to the thallium‐rich Allchar Mining Area (North Macedonia) were profiled by HPLC/DAD/MSn and headspace GC–MS. Seventy‐eight polyphenols and 123 biogenic volatile organic compounds were identified, and multivariate analysis showed congruent, species‐specific polyphenolic and volatile signatures with no significant association with
Marinela Cvetanoska, Marina Stefova, Katerina Bačeva Andonovska, Jasmina Petreska Stanoeva   +3 more
wiley   +1 more source

In Vitro Selection of DNA Aptamers that Binds Geniposide

Molecules, 2017
Geniposide is a key iridoid glycoside from Gardenia jasminoides fructus widely used in traditional Chinese herbal medicine. However, detection of this small molecule represents a significant challenge mostly due to the lack of specific molecular ...
Aozhe Zhang, Dingran Chang, Zijian Zhang, Fan Li, Weihong Li, Xu Wang, Yingfu Li, Qian Hua   +7 more
doaj   +1 more source

Enhanced Bioactivities of Fermented Rehmannia glutinosa via Catalpol-Mediated GLP-1R Signaling

Current Issues in Molecular Biology
Fermentation is widely used to enhance the bioactivity of herbal phytochemicals through microbial bioconversion. Rehmannia glutinosa contains catalpol, an iridoid glycoside with metabolic and immunomodulatory potential; however, its efficacy in the ...
Eun-Ji You, Boyong Kim
doaj   +1 more source

Phenylethanoid and Iridoid Glycosides from Veronica persica.

ChemInform, 2002
AbstractFor Abstract see ChemInform Abstract in Full Text.
Saracoglu, I, HARPUT, US, INOUE, M, OGIHARA, Y   +3 more
openaire   +4 more sources