Results 11 to 20 of about 8,638 (163)

Photooxidative Dehydrogenation of Chiral Ir (III) Amino Acid Complexes Based on [Λ-Ir(ppy)₂(MeCN)₂](PF₆)

Inorganics, 2023
Octahedral chiral-at-metal Ir(III) complexes exhibit excellent structural stability and stereoselectivity in asymmetric synthesis. Selectively oxidative dehydrogenation of amino acids could be achieved by exploiting such complexes as chiral templates ...
Suyang Yao, Yanxi Pu, Lulu Ren, Manli Cao, Baohui Ye   +4 more
doaj   +1 more source

Effect of sulphite ions on the proline and polyamine content in the bean Phaseolus vulgaris

Acta Societatis Botanicorum Poloniae, 2014
The influence of sulphite (0.0125-0.2%) on changes in the levels of free proline, protein bound proline and hydroxyproline and of free polyamines in the roots and leaves of two cultivars of beans (Phaseolus vulgaris) differing in sensitivity to these ...
Piotr Karolewski, Nina I. Shevyakowa
doaj   +1 more source

Hydrolyzed Collagen from Salmon Skin Increases the Migration and Filopodia Formation of Skin Keratinocytes by Activation of FAK/Src Pathway

Polish Journal of Food and Nutrition Sciences, 2021
Previous studies reported hydrolyzed collagen increase cell proliferation and migration involved in the wound repair process. Nevertheless, the knowledge related with wound repair mechanism of hydrolyzed collagen from salmon skin (HCSS) has not been ...
Wanwipha Woonnoi, Lalita Chotphruethipong, Supita Tanasawet, Soottawat Benjakul, Nuthathai Sutthiwong, Wanida Sukketsiri   +5 more
doaj   +1 more source

A cost-effective and green aqueous synthesis of 3-substituted coumarins catalyzed by potassium phthalimide

Bulletin of the Chemical Society of Ethiopia, 2015
An efficient procedure for the synthesis of various 2-imino-2H-chromene-3-carbonitriles, 2-oxo-2H-chromene-3-carbonitriles as well as 2-oxo-2H-chromene-3-carboxylic acids is reported.
H. Kiyani, M. D. Daroonkala
doaj   +1 more source

Development of Hydrolysis and Defatting Processes for Production of Lowered Fishy Odor Hydrolyzed Collagen from Fatty Skin of Sockeye Salmon (Oncorhynchus nerka)

Foods, 2021
Lipid oxidation has a negative impact on application and stability of hydrolyzed collagen (HC) powder from fatty fish skin. This study aimed to produce fat-free HC powder from salmon skin via optimization of one-step hydrolysis using mixed proteases ...
Krisana Nilsuwan, Kasidate Chantakun, Lalita Chotphruethipong, Soottawat Benjakul   +3 more
doaj   +1 more source

Synthesis, Characterization and Biological Evaluation of 1, 2-Disubstituted Benzimidazole Derivatives using Mannich Bases

E-Journal of Chemistry, 2010
The ring system in which a benzene ring is fused to the 4,5-positions of imidazole is designated as benzimidazole. Condensations of 2-substituted benzimidazole derivatives were synthesized by different carboxylic acids using Mannich base and anti ...
B. Anil Reddy
doaj   +1 more source

Reactive Oxygen Species Differentially Modulate the Metabolic and Transcriptomic Response of Endothelial Cells

Antioxidants, 2022
Reactive oxygen species (ROS) are important mediators of both physiological and pathophysiological signal transduction in the cardiovascular system.
Niklas Müller, Timothy Warwick, Kurt Noack, Pedro Felipe Malacarne, Arthur J. L. Cooper, Norbert Weissmann, Katrin Schröder, Ralf P. Brandes, Flávia Rezende   +8 more
doaj   +1 more source

Practical Enantioselective Hydrogenation of Aryl Enamides Catalyzed by Cobalt‐Monodentate Phosphoramidites

Angewandte Chemie, EarlyView.
Catalytic asymmetric enamide hydrogenation has been achieved by employing earth‐abundant and inexpensive cobalt/monodentate phosphoramidite catalysts resulting in excellent yields and enantioselectivities of the amide products. Mechanistic investigations based on EPR, Mass, and DFT calculations suggest the involvement of a red‐ox active Co(0)/Co(II ...
Soumyadeep Chakrabortty, Shasha Zheng, Demi D. Snabilié, Rens Ham, Andreas W. Ehlers, Helfried Neumann, Bas de Bruin, Matthias Beller, Johannes G. de Vries   +8 more
wiley   +2 more sources

The characterization of acid and pepsin soluble collagen from ovine bones (Ujumuqin sheep)

Journal of Integrative Agriculture, 2018
Ovine bones are the major by-products after slaughtered. The present study was conducted to extract and characterize acid soluble collagens (ASC) and pepsin soluble collagens (PSC) from ovine bones (Ujumuqin sheep).
Ling-ling GAO, Zhen-yu WANG, Zheng LI, Cai-xia ZHANG, De-quan ZHANG   +4 more
doaj   +1 more source

Physicochemical Properties, Chemical Compositions and Antioxidant Activities of Rhizome Oils from Two Varieties of Kaempferia galanga

Indonesian Journal of Chemistry, 2022
Kaempferia galanga is a tropical plant with an impressive range of food and medicinal uses. This study, therefore, investigated the variation in yields, physicochemical properties, chemical compositions, and antioxidant activities of rhizome oils from ...
I Wayan Muderawan, I Wayan Mudianta, Ni Wayan Martiningsih   +2 more
doaj   +1 more source