Results 271 to 280 of about 5,063,962 (310)

Chemistry and Photochemistry of Pyruvic Acid Adsorbed on Oxide Surfaces.

Journal of Physical Chemistry A, 2019
The surface chemistry and photochemistry of gas-phase pyruvic acid (CH3COCOOH) on two oxides, Al2O3 and TiO2, have been investigated using transmission Fourier Transform Infrared (FTIR) Spectroscopy and mass spectrometry.
M. R. Alves, Yuan Fang, K. Wall, V. Vaida, V. Grassian   +4 more
semanticscholar   +1 more source

Pyruvic Acid Peels for the Treatment of Photoaging

Dermatologic Surgery, 2004
Pyruvic acid (CH3-CO-COOH), an alpha-keto-acid, has been recently used as a medium chemical peeling agent in subjects with inflammatory acne, moderate acne scars, greasy skin, actinic keratosis, and warts.The aim of our study was to evaluate the efficacy and tolerability of 50% pyruvic acid on moderately photodamaged facial skin.We treated 20 patients ...
Ghersetich, I, Brazzini, B, Peris, Ketty, Cotellessa, C, Manunta, T, Lotti, T.   +5 more
openaire   +4 more sources

Pyruvic acid metabolism in obesity

The American Journal of Digestive Diseases, 1955
Controlled experiments on the relative efficiency of carbohydrate, fat and protein in weight reduction diets indicate that obese people lose more weight when most of the calories are derived from fat. These findings are explained by a concept of obesity as due to an impairment in the oxidative pathway of pyruvic acid.
openaire   +3 more sources

Keto-enol equilibria in the pyruvic acid system: determination of the keto-enol equilibrium constants of pyruvic acid and pyruvate anion and the acidity constant of pyruvate enol in aqueous solution

Journal of the American Chemical Society, 1992
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
Yvonne Chiang, A. J. Kresge, Przemyslaw Pruszynski   +2 more
openaire   +3 more sources

The use of pyruvic acid in the treatment of acne

Journal of the European Academy of Dermatology and Venereology, 2004
ABSTRACTBackground  Acne is one of the most common dermatological diseases, affecting about 50% of adolescents. Different chemical peelings are used in local treatment, either alone or in association with other therapies.Objective  To evaluate the efficacy and tolerability of chemical peeling with pyruvic acid for treatment of mild to moderate papulo ...
Cotellessa, C, Manunta, T, Ghersetich, I, Brazzini, B, Peris, Ketty   +4 more
openaire   +3 more sources

Multiphase Photochemistry of Pyruvic Acid under Atmospheric Conditions.

Journal of Physical Chemistry A, 2017
Aerosol and molecular processing in the atmosphere occurs in a complex and variable environment consisting of multiple phases and interfacial regions.
Allison E. Reed Harris, A. Pajunoja, M. Cazaunau, A. Gratien, E. Pangui, A. Monod, E. Griffith, A. Virtanen, J. Doussin, V. Vaida   +9 more
semanticscholar   +1 more source

Atmospheric Simulation Chamber Studies of the Gas-Phase Photolysis of Pyruvic Acid.

Journal of Physical Chemistry A, 2017
Pyruvic acid is an atmospherically abundant α-keto-acid that degrades efficiently from the troposphere via gas-phase photolysis. To explore conditions relevant to the environment, 2-12 ppm pyruvic acid is irradiated by a solar simulator in the ...
Allison E. Reed Harris, M. Cazaunau, A. Gratien, E. Pangui, J. Doussin, V. Vaida   +5 more
semanticscholar   +1 more source

Torsional coupling in pyruvic acid

Journal of Molecular Spectroscopy, 1982
Abstract New assignments of rotational transitions in the first excited state of the skeletal torsion were made and showed an unexpected interchange in the sequence of energy levels for the internal rotation of the methyl group. This fact is traced back to a strong coupling between the skeletal torsion and the methyl torsion.
R. Meyer, A. Bauder
openaire   +2 more sources

Decarboxylation by intact yeast and pyruvate decarboxylase of some derivatives of pyruvic acid and ?-ketoglutaric acid

Archiv f�r Mikrobiologie, 1969
1. It has been confirmed that under anaerobic conditions at pH 2 pyruvic acid is vigorously decarboxylated by intact baker's yeast, but hardly at all at pH 5.5. Furthermore, the decarboxylation occurs more slowly with semiaerobically cultured than with aerobically cultured baker's yeast. 2.
Erkki Oura, Kaija Konttinen, Heikki Suomalainen   +2 more
openaire   +3 more sources

Hydration of the simplest α-keto acid: a rotational spectroscopic and ab initio study of the pyruvic acid-water complex.

Physical Chemistry, Chemical Physics - PCCP, 2017
Intermolecular interactions between pyruvic acid, the simplest α-keto acid, and water are important in bio- and atmospheric chemistry. In this context, the pure rotational spectrum of the pyruvic acid-water complex was measured from 7 to 15 GHz using a ...
Elijah G. Schnitzler, Nathan A. Seifert, Supriya Ghosh, Javix Thomas, Yunjie Xu, W. Jäger   +5 more
semanticscholar   +1 more source