Results 51 to 60 of about 14,919 (228)

Improved synthesis of gastrodin, a bioactive component of a traditional Chinese medicine [PDF]

Journal of the Serbian Chemical Society, 2014
Highly practical synthesis of gastrodin has been developed using penta-O-acetyl-b-D-glucopyranose and p-cresol as glycosyl donor and glycosyl acceptor, respectively, in four steps with 58.1% overall yield. At the initial step, the penta-O-acetyl-
Li Yu-Wen, Ma Cui-Li
doaj   +1 more source

Enzymatic Basis for the Oxidative Branch of Aromatic Amino Acid Fermentation Leading to p‐cresol Formation

Advanced Science, EarlyView.
In anaerobic bacteria, tyrosine serves as an electron donor in the oxidative Stickland fermentation branch, generating p‐hydroxyphenylacetate, ATP and reduced ferredoxin for decarboxylation into p‐cresol. ABSTRACT The phenolic metabolite p‐cresol is a byproduct of tyrosine fermentation by certain strictly anaerobic bacteria, including the human gut ...
Li Jiang, Yifeng Wei, Xumei Liu, Dazhi Liu, Zhenyu Liu, Yang Tong, Jinyu Yin, Ankanahalli N. Nanjaraj Urs, Meining Xing, Mark A. Harrison, Chuyuan Zhang, Sheng Yang, Yunzi Luo, Ee Lui Ang, Huimin Zhao, Yan Zhang   +15 more
wiley   +1 more source

Secondary organic aerosol formation from phenolic compounds in the absence of NO_x [PDF]

, 2011
SOA formation from benzene, toluene, m-xylene, and their corresponding phenolic compounds were investigated using the UCR/CE-CERT Environmental Chamber to evaluate the importance of phenolic compounds as intermediate species in aromatic SOA formation ...
C. Clark, D. Cocker III, K. Sato, P. Tang, S. Nakao   +4 more
core   +1 more source

Acoustical Studies on Molecular Interactions in Binary Liquid Mixtures at 303 K

E-Journal of Chemistry, 2009
Molecular interaction studies using ultrasonic technique in the binary liquid mixtures of cyclohexanone with o-cresol and p-cresol have been carried out at 303 K.
R. Uvarani, J. Sivapragasam
doaj   +1 more source

Identification of Exhaled Volatile Organic Compounds Biomarkers for Lung Cancer Under Data‐Limited Conditions Using Data Augmentation and Multi‐View Feature Selection

Advanced Intelligent Discovery, EarlyView.
This work introduces a novel framework for identifying non‐small cell lung cancer biomarkers from hundreds of volatile organic compounds in breath, analyzed via gas chromatography‐mass spectrometry. This method integrates generative data augmentation and multi‐view feature selection, providing a stable and accurate solution for biomarker discovery in ...
Guancheng Ren, Bohao Liu, Zhiyuan Qu, Xue Jiang, Heng Zhao, Danyao Qu, Ruizhi Ning, Chen Su, Taoping Liu, Guangjian Zhang, Weiwei Wu   +10 more
wiley   +1 more source

Molecular Interaction Studies in Binary Liquid Mixtures from Ultrasonic Data

E-Journal of Chemistry, 2010
Ultrasonic velocities and densities of the binary liquid mixtures of dimethy1 sulphoxide (DMSO) with phenol, o-cresol, m-cresol, p-cresol and p-chlorophenol at 318.15 K, over the entire composition range were measured.
N. Santhi, PL. Sabarathinam, M. Emayavaramban C. Gopi, C. Manivannan   +3 more
doaj   +1 more source

NON-LINEARITY PARAMETER B/A AND AVAILABLE VOLUME VA OF BINARY LIQUID MIXTURES: THERMO-ACOUSTICAL APPROACH [PDF]

Proceedings on Engineering Sciences
When high amplitude sound waves propagate through liquid mixtures, various non-linear phenomena can occur, and ultrasonic research in these systems can reveal important details about their structure and interaction.
Srinivasu J.V. , Narendra K. V. R. , Kavitha Ch., Srinivasa Krishna T.   +3 more
doaj   +1 more source

Development of Efficient and Selective Processes for the Synthesis of Commercially Important Chlorinated Phenols

Organics, 2021
para-Selective processes for the chlorination of phenols using sulphuryl chloride in the presence of various sulphur-containing catalysts have been successfully developed.
Keith Smith, Gamal A. El-Hiti
doaj   +1 more source

Improving methodology to determine vitamin D3 in food supplements

Annals of Medicine, 2021
Introduction Nowadays, there is a trend to enrich food and food supplements (FS) with Vitamin D3. Economic operators who places FS on the market does not have to perform running safety trials, but only to comply with the food safety regulations ...
Carla Ferreira, Alexandra Figueiredo, Guilhermina Moutinho, Maria D. Auxtero, Isabel Margarida Costa, Alexandre Quintas   +5 more
doaj   +1 more source

Modeling the Concentrations of Gas-Phase Toxic Organic Air Pollutants: Direct Emissions and Atmospheric Formation [PDF]

, 1994
An Eulerian photochemical air quality model is described for the prediction of the atmospheric transport and chemical reactions of gas-phase toxic organic air pollutants.
Cass, Glen R., Harley, Robert A.
core   +1 more source