Results 91 to 100 of about 136,021 (344)

Microbiological transformation of a synthetic benzofurane type lactone [PDF]

Journal of the Serbian Chemical Society, 2000
The aim of this work was the investigation of the biotransformation ability of a synthetic benzofurane type g-lactone. This work was based on the microbiological reactions of Aspergillus niger, Saccharomyces cerevisiae, Bacillus mycoides ...
Sukdolak S., Solujić-Sukdolak S., Krstić Lj.   +2 more
doaj   +1 more source

Synthesis of spiroacetals using functionalised titanium carbenoids [PDF]

, 2008
Alkylidenation of lactones with functionalised titanium carbenoid reagents (Schrock carbenes) followed by acid-induced cyclisation of the resulting enol ethers constitutes a new method for the preparation of [4.4], [4.5] and [5.5] spiroacetals (1,6 ...
Aho, Alcaide, Boxer, Brimble, Calver A. Main, Canova, Chang, Cuzzupe, Denmark, Doubsky, D’Annibale, El-Badri, Enders, Evans, Furrow, Godoy, Hartley, Hayes, Horikawa, Inoue, Ireland, Keaton, Krishna, Kumar, Lowe, Lu, Macleod, McKiernan, Mead, Morimoto, Mortimore, Nakashima, Ousset, Paquette, Paterson, Perron, Petasis, Phillips, Richard C. Hartley, Sakaguchi, Shahzad S. Rahman, Takai, Takeda, Tebbe, Tietze, Tsang, Van Orden, Velluci, Vuagnoux-D’Augustin, Wang, Yan, Yang, Zhou   +52 more
core   +1 more source

Oligomerization of Lactones

Journal of Japan Oil Chemists' Society, 1968
Preparation of oligomers of β-propiolactone (β-PL) and e-caprolactone (e-CL) having reactive functional groups such as hydroxyl, carboxyl and acid chloride groups have been studied. In order to clarify the pattern of bond fission of the lactones, reactions of β-PLwith ethanol, acetic acid and acetyl chloride were carried out with or without catalysts ...
Yuya Yamashita, Masahiko Okada, Hiromasa Suzuki   +2 more
openaire   +3 more sources

Ultra‐low LOD H2O2 Sensor Based on Synergistic Nernst Potential Effect

Advanced Science, EarlyView.
Due to the synergistic effect of ENernst,H2O2${E}_{\mathrm{Nernst},\ {\mathrm{H}}_{2}{\mathrm{O}}_{2}}$ and ENernst,H+${E}_{\mathrm{Nernst},\ {\mathrm{H}}^{+}}$, the proposed sensors in this study can achieve ultralow H2O2 detection limit as low as 1.8 × 10−12 M based on the stacked PEDOT: BTB/PEDOT: PSS semiconducting layer.
Zhaoqun Wang, Wen Gao, Xiaorong Niu, Yuhang Liu, Zichen Jin, Fan Zhang, Zhengdong Cheng, Xiaoning Jiang, Wendong Zhang, Ting Wang, Jianlong Ji, Xiaojie Chai, Shengbo Sang   +12 more
wiley   +1 more source

Lactonization of α-Ferrocenyl Ketocarboxylic Acids via Nucleophilic Attack of Carbonyl Oxygen

Crystals
The effects of the ferrocenyl moiety to enhance the nucleophilicity of the carbonyl group, situated at its adjacent position, have been explored in a series of α-ferrocenyl ketocarboxylic acids.
Uttam R. Pokharel, Brennan J. Curole, Autumn M. Andras, Brandon P. LeBlanc, Frank R. Fronczek   +4 more
doaj   +1 more source

Elastic Deformation of Cellulose/Lignin‐Based Anode for Rejuvenating Aged Mix‐Cultured Electroactive Biofilms

Advanced Science, EarlyView.
A new strategy for revitalizing aged biofilms using the elastic deformation of biomass‐based flexible carbon aerogel is proposed. The elastic deformation removes the nonelectrogenic bacteria and the dead electrogenic bacteria, as well as a lot of loosely bound extracellular polymer materials.
Xue Liu, Zheng Zhang, Qingwen Zheng, Chengcheng Suo, Bailing Dong, Huiying Song, Jiayi Wang, Jia Liu, Runfeng Yuan, Sailike Milanbieke, Sha Luo, Chenhui Yang, Zhijun Chen, Ruiwen Wang, Wei Li, Shouxin Liu   +15 more
wiley   +1 more source

Tratamiento de miasis oral con Ivermectina notificación de tres casos causados por Cochliomyia Hominivorax (COQUEREL)

Revista Facultad de Odontología Universidad de Antioquia, 1998
Myiasis is the infestation of the body tissues of man and animals by the larvae of Diptera (Two winged flies). It has been observed in differents areas of humans, but is uncommon in the oral cavity.
Francisco Levi Duque-Serna , Rafael Valderrama-Hernández , Jorge Alonso González-Robledo   +2 more
doaj  

Reaction of Lactone-Containing Poly(benzofuran-co-arylacetic acid) with Diamines to Cross-Linked Products of Improved Thermal Conductivity

Molecules
The recently developed phenoplast-related polymer, poly(benzofuran-co-arylacetic acid), presents a versatile molecular structure containing lactone and carboxylic acid functionalities that offer significant flexibility in creating cured materials with ...
Alexandrina Nan, Xenia Filip, Jürgen Liebscher   +2 more
doaj   +1 more source

Optimized expression of the Starmerella bombicola lactone esterase in Pichia pastoris through temperature adaptation, codon-optimization and co-expression with HAC1 [PDF]

, 2018
The Starmerella bombicola lactone esterase (SBLE) is a novel enzyme that, in vivo, catalyzes the intramolecular esterification (lactonization) of acidic sophorolipids in an aqueous environment.
Ciesielska, Katarzyna, De Waele, Stijn, Devreese, Bart, Laukens, Bram, Planckaert, Sören, Soetaert, Wim, Van Bogaert, Inge, Vandenberghe, Isabel, Verweire, Stijn   +8 more
core   +2 more sources

Identification and Application of a Novel Patulin Degrading Enzyme From Meyerozyma guilliermondii

Advanced Science, EarlyView.
Patulin (PAT), a hazardous mycotoxin, threatens human health. A novel yeast‐derived short‐chain dehydrogenase/reductase effectively degrades PAT into nontoxic ascladiol via catalytic triad activity. The biological detoxification process has no significant effect on the quality of fresh pear juice.
Yu Zhang, Qianhua Zhao, Solairaj Dhanasekaran, Esa Abiso Godana, Yue Zhang, Xue Bai, Qiya Yang, Hongyin Zhang   +7 more
wiley   +1 more source