Results 31 to 40 of about 2,191 (180)

Effect of Fruit Maturation Stage on the Chemical Composition and Antioxidant and Cytotoxic Activities of Piper nigrum Essential Oil

Flavour and Fragrance Journal, Volume 41, Issue 4, Page 908-922, July 2026.
The essential oils of Piper nigrum show marked chemical and biological variation across fruit maturation stages. Ripe fruits yield oils with the strongest antioxidant and cytotoxic activities, demonstrating that maturation directly modulates volatile composition and enhances the bioactive potential of this aromatic species.
Marcio Marcelo da Siva Pessoa, Jorddy Neves Cruz, Ingryd Nayara de Farias Ramos, André Salim Khayat, Eloisa Helena de Aguiar Andrade, José de Arimatéia Rodrigues do Rego, Davi do Socorro Barros Brasil   +6 more
wiley   +1 more source

Quantifying Shifts in the Absorption Budget of the Labrador Sea as the Dominant Phytoplankton Group Changes Between Diatoms and Phaeocystis

Journal of Geophysical Research: Oceans, Volume 131, Issue 7, July 2026.
Abstract Phytoplankton spring blooms in the Labrador Sea are dominated by diatoms, with Phaeocystis spp. (hereafter Phaeocystis) contributing more than 25% to total phytoplankton biomass. However, in 2015 and 2022, large blooms of Phaeocystis were observed, contributing up to 90% of the surface phytoplankton biomass. In this study, we quantified shifts
K. L. Wilson, E. Devred, T. Perry, S. Clay   +3 more
wiley   +1 more source

Sterols from the Madagascar Sponge Fascaplysinopsis sp.

Marine Drugs, 2010
The sponge Fascaplysinopsis sp. (order Dictyoceratida, Family Thorectidae) from the west coast of Madagascar (Indian Ocean) is a particularly rich source of bioactive nitrogenous macrolides.
Yoel Kashman, Anne Gauvin-Bialecki, Emmanuelle Gros, Jean Vacelet, Maurice Aknin   +4 more
doaj   +1 more source

Population‐Specific Chemotypes in Pseudomisopates rivas‐martinezii (Sanchez Mata) Güemes From La Serrota and Gredos Massifs (Iberian Central Range)

Chemistry &Biodiversity, Volume 23, Issue 6, June 2026.
Pseudomisopates rivas‐martinezii, a critically endangered Iberian endemic, reveals population‐specific chemotypes when analyzed by elemental analysis, FTIR, and GC–MS. Underground tissues from both populations share a convergent histidine‐derived metabolite profile, whereas aerial parts diverge markedly: La Serrota accumulates phenolic derivatives from
Eva Sánchez‐Hernández, María Elena Amat, Mario Cano‐Pérez, Vicente González‐García, Jesús Martín‐Gil, Pablo Martín‐Ramos   +5 more
wiley   +1 more source

Chemotaxonomic Relationship of Oligomer Resveratrol in Three Malaysian Dipterocarpus Species from the Taxonomic Tribe of Dipterocarpaceae

Indonesian Journal of Chemistry
A phytochemical investigation of three species of Malaysian Dipterocarpus contributed to the isolation of 22 compounds which consist of 15 oligostilbenoids, 2 terpenes, 2 coumarins, and 3 flavonoids.
Liliwirianis Nawi, Wan Zuraida Wan Mohd Zain, Norizan Ahmat, Che Puteh Osman, Yoshiaki Takaya, Aisyah Salihah Kamarozaman, Noorazlina Adnan, Siti Zakirah Azahar   +7 more
doaj   +1 more source

Comparative Phytochemical Analysis of Five South African Bulbine Species Using Chromatography‐Based Methods

Chemistry &Biodiversity, Volume 23, Issue 6, June 2026.
Comprehensive chromatographic and chemometric profiling of five medicinal South African Bulbine species across leaves, rhizomes, and roots reveals 73 metabolites, including species‐specific phenylanthraquinones, flavonoids, and anthocyanins, that serve as reliable chemical markers for species authentication.
Ramoagi T. Segone, Maxleene Sandasi, Efficient Ncube, Weiyang Chen, Bharathi Avula, Kumar Katragunta, Ikhlas A. Khan, Alvaro M. Viljoen   +7 more
wiley   +1 more source

Characterization of Plant Volatiles Reveals Distinct Metabolic Profiles and Pathways among 12 Brassicaceae Vegetables

Metabolites, 2018
Plants emit characteristic organic volatile compounds (VOCs) with diverse biological/ecological functions. However, the links between plant species/varieties and their phytochemical emission profiles remain elusive.
Yu Liu, Hui Zhang, Shivshankar Umashankar, Xu Liang, Hui Wen Lee, Sanjay Swarup, Choon Nam Ong   +6 more
doaj   +1 more source

Integrative Metabolomic and Transcriptomic Profiling Reveals the Chemical and Molecular Basis for Aroma Divergence in Isatis Fruits

Food Frontiers, Volume 7, Issue 3, May 2026.
Integrative metabolomic and transcriptomic analyses revealed the chemical and molecular basis of aroma divergence in fruits of three Isatis species. Distinct volatile profiles and 44 key aroma‐active compounds defined species‐specific sensory characteristics, while co‐expression analysis identified NAC transcription factors and lipid‐derived pathway ...
Rong Chen, Yan Qing, Xiaoshan Geng, Qiaoyun Cai, Lili Wang, Fanglin Liu, Huijun Cheng, Yude Peng, Chunfeng Tang, Huaxi Huang, Qin Liu   +10 more
wiley   +1 more source

Syringin in some species of the subtribe Centaureinae of the Asteraceae

Acta Societatis Botanicorum Poloniae, 2011
The occurrence of syringin in eight out of ten investigated plant species of the subtribe Centaureinae (Asteraceae) was reported. The compound was isolated from aerial parts of the plants by silica gel column chromatography of methanol extracts. Contents
Joanna Cis, Gerard Nowak, Małgorzata Horoszkiewicz-Hassan, Wanda Kisiel   +3 more
doaj   +1 more source

Deciphering the biosynthetic pathways of lichen acids

New Phytologist, Volume 250, Issue 3, Page 1784-1799, May 2026.
Summary Depsides and depsidones are polyketide‐derived lichen acids widely distributed in lichen thalli, yet the biosynthetic gene clusters (BGCs) responsible for their production remain poorly understood. To address this gap, we investigated the diversity and evolutionary relationships of polyketide BGCs in lichens.
Wonyong Kim, Tânia Keiko Shishido, Huong T. Pham, Kyo Bin Kang, Rundong Liu, Matti Wahlsten, Jérôme Collemare, Hyun Park, Soon‐Ok Oh, Hyung‐Ho Ha, Hangun Kim, Jae‐Seoun Hur   +11 more
wiley   +1 more source