Results 51 to 60 of about 2,915 (204)

Elimination of acrolein from cider by addition of sulphur dioxide

Journal of Chemical Technology &Biotechnology, Volume 101, Issue 6, Page 1254-1262, June 2026.
Abstract BACKGROUND Acrolein is a toxic substance that sometimes appears in ciders, imparting an unpleasant taste and odour, which spoils the beverage entirely. Based on the reaction between acrolein and sulphur dioxide to form adducts, some oenologists of the Basque Country and Navarre (Northern Spain) use sulphur dioxide to remove acrolein.
Enaitz de las Heras, Andoni Zuriarrain‐Ocio, Juan Zuriarrain, Oier Etxebeste, Iñaki Berregi   +4 more
wiley   +1 more source

Mean weighted residuals reveal systematic overestimation of Bragg intensities in single‐crystal diffraction

Journal of Applied Crystallography, Volume 59, Issue 3, Page 707-715, June 2026.
Analysis of more than 8000 published data sets demonstrates that systematic overestimation of observed intensities can deceptively improve common agreement factors and atomic displacement parameters, masking underlying deficiencies in data quality.The mean value of weighted residuals (⟨ζ⟩) was analysed for 8424 published single‐crystal X‐ray data sets ...
Julian Henn, Piero Macchi, Toms Rekis
wiley   +1 more source

Tetrameric hotdog‐fold structure and catalytic mechanism of the SaPaaI thioesterase from Staphylococcus aureus

Protein Science, Volume 35, Issue 5, May 2026.
Abstract Acyl‐CoA thioesterases hydrolyse thioester bonds to release free fatty acyl chains and coenzyme A (CoA), thereby regulating lipid metabolism, signaling, and membrane homeostasis. Here, we present the structural and functional characterization of the Paal‐like thioesterase SAV0944 (SaPaaI) from Staphylococcus aureus.
Yogesh Khandokar, Parul Srivastava, Renate H. M. Schwab, Ashish Sethi, Naveen Vankadari, Jade K. Forwood   +5 more
wiley   +1 more source

Steric effects on reaction rates. XI. Solvolysis of tertiary carbon substrates rationalized by molecular mechanics calculations

, 1989
The steric energy difference (Est) between tertiary carbenium ions (R+) and the corresponding alcohols has been calculated by MM2 for a series of tertiary nonbridgehead substrates and correlated with their rate of solvolytic reactivity.
Mareda, Jiri, Muller, Paul
core   +1 more source

Structural Investigations into the β-Effect of Pentavalent Silicon

, 2016
Ester and ether derivatives of 2-[(8-dimethylaminonaphthalen-1-yl)dimethylsilanyl]ethanol (10a) were prepared as part of a preliminary study to determine the β-effect of pentavalent silicon.
Jonathan M. White (1366602), Marisa Spiniello (2450545)   +1 more
core   +3 more sources

The Arsenal of Aromatic Degrading Bacteria: How They Sense, Chase, Adapt and Destroy Environmental Pollutants

Microbial Biotechnology, Volume 19, Issue 5, May 2026.
In the environment, bacteria sense aromatic pollutants, migrate toward them, adapt to toxicity, and deploy specialized uptake and catabolic systems. Genomic plasticity, metabolic versatility and division of labor within populations together aid in the degradation of persistent aromatics, highlights that biodegradation is driven by various eco ...
Prashant S. Phale, Tushar Dhamale, Satyajit Subhash   +2 more
wiley   +1 more source

Electrochemical removal of the nitrobenzoyl group in phenyl and butyl nitrobenzoates in N,N-dimethyl formamide

O trabalho investiga o comportamento eletroquímico de nitrobenzoatos de fenila e butila em meio de N,N-dimetilformamida (DMF), utilizando técnicas como voltametria cíclica, coulometria e eletrólise a potencial controlado. O objetivo principal foi estudar
Jorge, Sônia Maria Alves
core   +1 more source

Bed rest decreases resting skeletal muscle O2 uptake and resting energy expenditure in young and elderly subjects

Experimental Physiology, Volume 111, Issue 5, Page 2599-2612, 1 May 2026.
Abstract A decrease in resting muscle O2 uptake (V̇O2m${\dot V_{{{\mathrm{O}}_2}{\mathrm{m}}}}$) described during bed rest (BR) could determine a decreased whole‐body resting energy expenditure (REE), potentially useful during prolonged spaceflights. Two groups of recreationally active men (young [Y], n = 8, age 23 ± 5 years; elderly [E], n = 10, age ...
Giovanni Baldassarre, Simone Porcelli, Lucrezia Zuccarelli, Lorenza Brocca, Noemi Arboit, Laura Gobbo, Michele Lacerenza, Alessio Marciano, Chiara Motto, Giulia Sanguin, Mladen Gasparini, Boštjan Šimunič, Rado Pišot, Marco Narici, Bruno Grassi   +14 more
wiley   +1 more source

Bacterial degradation of the nitrobenzoic acids [PDF]

Biochemical Journal, 1959
N J, CARTWRIGHT, R B, CAIN
openaire   +2 more sources

Conversion reactions of cepham into penam systems. A route to determine the relative configurations of two diastereoisomeric 3-bromo-4-methoxycepham derivatives

, 1986
The p-nitrobenzoates I were stereospecifically transformed with AgOAc-AcOH into the penam derivs. II. Oxidn. of II yielded the (S)- and (R)-sulfoxides.
B. MACCHIA, P. DOMIANO, ROSSELLO, ARMANDO, F. MACCHIA P. SCATENA, A. BALSAMO   +4 more
core   +1 more source