Results 141 to 150 of about 52,816 (257)

Constituintes químicos de Vernonia scorpioides (Lam) Pers. (Asteraceae) Chemical constituents of Vernonia scorpioides (Lam) Pers. (Asteraceae)

Química Nova, 2013
The chemical investigation of hexane and ethanol extracts from the aerial parts of Vernonia scorpioides resulted in the isolation and characterization of a new polyacetylene lactone, rel-4-dihydro-4β-hydroxy-5a-octa-2,4,6-triynyl-furan-2-(5H)-one ...
Adalva Lopes Machado, Fabiana Martins Aragão, Paulo N. Bandeira, Hélcio Silva dos Santos, Maria Rose Jane R. Albuquerque, Otília Deusdênia L. Pessoa, Edilberto R. Silveira, Edson Paula Nunes, Raimundo Braz-Filho   +8 more
doaj  

Synthesis of Benzopyran Atropisomers via Electrophilic Halogenation

European Journal of Organic Chemistry, EarlyView.
We report a halogenation‐based method for the synthesis of axially chiral benzopyrans, tolerating diverse substituents and halogens (Br, Cl, and I). A double bromination gives bisbenzopyrans with two stereogenic axes. Preliminary enantioselective conditions yield benzopyran atropisomer with up to 56% ee.
Alix Bourhis, Expédite Yen‐Pon, Jean Rodriguez, Damien Bonne   +3 more
wiley   +1 more source

Total Synthesis of Sacrolide A and Cytotoxic Evaluation

European Journal of Organic Chemistry, EarlyView.
Isolated from the edible cyanobacterium Aphanothece sacrum, sacrolide A is a highly potent antimicrobial and cytotoxic metabolite. Its total synthesis via a convergent strategy enabled accurate assessment of its effects on liver and colon cells, offering new insights into its bioactivity and potential health risks.
Priyanka Kataria, Kamel Hadj‐Kaddour, Alexis Giraudon, Jawad Belkheir, Alexandre Guy, Thierry Durand, Magali Gary‐Bobo, Camille Oger   +7 more
wiley   +1 more source

Wearable biofluids colorimetric biosensors

FlexMat, EarlyView.
Wearable and flexible colorimetric sensors enable real‐time, non‐invasive detection through visible color changes. Advances in materials and device engineering have driven their development; however, challenges remain in sensitivity, selectivity, and scalable manufacturing.
Zhaoyuan Lyu, Zhiqiang Xiao, Wenhao Shen, Cheng Liu, Te Gu, Ruchuan Cao, Fangyu Zhang, Chuizhou Meng, Shichao Ding   +8 more
wiley   +1 more source

A compendium of extracellular vesicle biogenesis inhibitors: From bench to bedside

Interdisciplinary Medicine, EarlyView.
This review explores a decade of research on extracellular vesicles (EVs), detailing their biogenesis and roles in health and disease. It emphasizes EVs' relevance for potential medical applications covering various conditions such as cancer, neurodegeneration, inflammation, and infectious diseases, bridging experimental findings with clinical ...
Stefano Vecchione, Ana Talamillo, Juan M. Falcón‐Pérez   +2 more
wiley   +1 more source

Flavouring Group Evaluation 80 (FGE.80) ‐ Consideration of alicyclic, alicyclic‐fused and aromatic‐fused ring lactones evaluated by JECFA (61st meeting) structurally related to a aromatic lactone evaluated by EFSA in FGE.27 (2008) ‐ Opinion of the Scientific Panel on Food Additives, Flavourings, Processing Aids and Materials in Contact with Food (AFC)

EFSA Journal, 2008
European Food Safety Authority (EFSA)
doaj   +1 more source

The use of activated carbon derived from spent coffee grounds as a reusable, sustainable, and effective solution for the removal of butylparaben from water

Journal of Chemical Technology &Biotechnology, EarlyView.
Abstract BACKGROUND Parabens, including butylparaben (BP), are widely used as antimicrobial preservatives in food, cosmetics, and pharmaceuticals, yet are poorly removed by conventional water treatment processes and pose potential risks to aquatic life and human health.
Lorena Maihury Santos Tsubouchi, Diane Scapin, Gideã Taques Tractz, Flávia Aparecida Reitz Cardoso, Lúcio Cardozo‐Filho, Alessandro Francisco Martins, Diógenes Vedoy, Ana Paula Peron, Osvaldo Valarini Junior   +8 more
wiley   +1 more source

Fermentation characteristics of four southern sichuan citrus cultivars

JSFA reports, EarlyView.
Abstract Background Sichuan, China's leading citrus‐producing region has strong potential for citrus wine development. Citrus is rich in bioactive compounds that enhance flavor and health value, yet current citrus wines often show weak aroma and bitterness.
Zhiqing Zheng, Cong Li, Jun Zhao, Yi Ma, Jiaming Cui, Tian Zheng, Bin Guo, Tong Lin, Chun Yi, Xingyin Zhang   +9 more
wiley   +1 more source

Integrated phytochemical and bioactivity profiling of Xanthium strumarium fruits from Korea and China: Implications for origin‐specific quality specification

Journal of the Science of Food and Agriculture, EarlyView.
Abstract BACKGROUND Geographic origin influences the phytochemical composition and biological activities of medicinal plant resources. Xanthium strumarium L. (XS) fruit is widely used in East Asian traditional medicine. However, current pharmacopeial standards primarily recognize Chinese‐derived material, despite the availability and traditional use of
Eunsu Song, Seung‐Min Oh, Jiyeon Chun, Jinah Hwang   +3 more
wiley   +1 more source

Emission FTIR analyses of thin microscopic patches of jet fuel residues deposited on heated metal surfaces [PDF]

The relationship of fuel stability to fuel composition and the development of mechanisms for deposit formation were investigated. Fuel deposits reduce heat transfer efficiency and increase resistance to fuel flow and are highly detrimental to aircraft ...
Lauer, J. L., Vogel, P.
core   +1 more source