Results 21 to 30 of about 735,127 (280)

Determination of Dioxins and Dioxin-like Polychlorinated Biphenyls in Pork by Gas Chromatography-Tandem Mass Spectrometry [PDF]

Shipin Kexue, 2023
A gas chromatography-tandem mass spectrometry (GC-MS/MS) with stable isotope dilution (SID) method was established for the determination of dioxins (PCDD/Fs) and dioxin like polychlorinated biphenyls (DL-PCBs) in pork. The sample was extracted by Soxhlet
LU Jing, JIAO Yanna, CHENG Jing, SHEN Tiantian, ZHU Shaohua, FU Shanliang
doaj   +1 more source

Purification and identification of a novel protein isolated from Panax quinquefolium and evaluation of its In vitro antioxidant properties

World Journal of Traditional Chinese Medicine, 2019
Objective: A novel protein was first purified from Panax quinquefolius L. (AGNP), and in vitro antioxidant activities of AGNP were first studied in this work.
Xue-Hui Li, Yang Yang, Zhao Yu, Ning Xu, Xiao-Lei Tang, Xue-Yuan Bai, Si-Ming Wang, Hao-Yuan Chen, Da-Qing Zhao, Li Liu, Bin Qi   +10 more
doaj   +1 more source

Synthesis of 2-Acylphenol and Flavene Derivatives from the Ruthenium-Catalyzed Oxidative C-H Acylation of Phenols with Aldehydes [PDF]

, 2015
The cationic ruthenium hydride complex [(C6H6)(PCy3)(CO)RuH]+BF4− has been found to be an effective catalyst for the oxidative C–H coupling reaction of phenols with aldehydes to give 2-acylphenol compounds.
Aponick, Arockiam, Baslé, Boots, Chan, Charest, Choy, Fristrup, González-Bello, Gore, Gunanathan, Han, Jia, Kakiuchi, Kakiuchi, Kandaswami, Koren-Selfridge, Kwon, Lee, Li, Li, Li, Li, Lyons, Madabhushi, Miyaura, Mo, Ngidi, Obora, Olah, Park, Pastine, Rao, Rappoport, Shan, Sharma, Sigman, Suzuki, Tang, Thirunavukkarasu, Thirunavukkarasu, Thirunavukkarasu, Wang, Yang, Yao, Yeung, Zhang, Álvarez-Bercedo   +47 more
core   +2 more sources

Derivatization-free gel permeation chromatography elucidates enzymatic cellulose hydrolysis

Biotechnology for Biofuels, 2012
Background The analysis of cellulose molecular weight distributions by gel permeation chromatography (GPC) is a powerful tool to obtain detailed information on enzymatic cellulose hydrolysis, supporting the development of economically viable biorefinery ...
Engel Philip, Hein Lea, Spiess Antje C
doaj   +1 more source

Dry-column chromatographic isolation of fatty acid esters of phorbol from croton oil

Journal of Lipid Research, 1969
The family of mixed fatty acid esters of 4,9,12,-13,20-pentahydroxy-tiglia-1,6-dien-3-one (phorbol) has been isolated from croton oil by column chromatography on silica gel and preparative dry-column chromatography on silica gel HF/254 packed in a ...
Paul R. Ocken
doaj   +1 more source

Laboratory Database to Manage Electrophoresis and Chromatography Separations and the Associated Samples

BioTechniques, 2000
A database was developed to store, organize, and retrieve the data associated with electrophoresis and chromatography separations. It allows laboratories to store extensive data on separation techniques (analytical and preparative).
Kenneth D. Cole
doaj   +1 more source

Gel permeation chromatography [PDF]

Endeavour, 1984
Abstract Gel permeation chromatography is the most valuable single technique in the molecular weight characterisation of polymers. The power of this technique lies in its ability to give information on the whole molecular weight distribution. In Britain, the Polymer Supply and Characterisation Centre provides a GPC service for research workers in the
VENKATARAMAN NARASIMHAN, CHARLES M. BURNS, ROBERT Y. M. HUANG, DOUGLAS R. LLOYD   +3 more
openaire   +2 more sources

Oxalate-silica gel thin-layer system for free 2-hydroxy fatty acids and for fatty acyl coenzyme A

Journal of Lipid Research, 1972
The 2-hydroxy fatty acids tend to yield streaks in thin-layer chromatography on silica gel plates. If potassium oxalate is included with binder-free silica gel, good spots are obtained.
M. David Ullman, Norman S. Radin
doaj   +1 more source

Poly(amidoamine)s synthesis, characterisation and interaction with BSA [PDF]

, 2014
Cationic poly(amidoamine)s (PAAs) were synthesised and characterised by NMR and gel permeation chromatography. Their thermal properties were investigated using thermogravimetric analysis and differential scanning calorimetry.
Akinc, Almeida, Anand, Antonov, Boeris, Boeris, Brostow, Bujacz, Coué, Danusso, Deep, Dey, Dhalluin, Ferruti, Ferruti, Ferruti, Funhoff, Giancola, Gill, Gu, Julie L. N. Dubois, Kalogeras, Karayianni, Kishimura, Lakowicz, Lavignac, Lavignac, Lavignac, Leader, Liu, Luo, Nathalie Lavignac, Piest, Plesner, Prevette, Ranucci, Richardson, Richardson, Romanini, Seyrek, Tanzi, Torchilin, van der Aa, Vlasova, von Harpe, Won   +45 more
core   +1 more source

Regenerated Silica Gel for Isolation of Ethyl p-Methoxycinnamate from Kaempferia galanga rhizome [PDF]

E3S Web of Conferences
The main component from Kaempferia galanga rhizome extract is known as ethyl p-methoxycinnamate. Column chromatography using silica gel is one of the commonly used method for obtaining high purity of ethyl p-methoxycinnamate from K.
Mazaya Nadia Adelia, Widiastuti Diana, yati Indri, Prastya Muhammad Eka, Andreani Agustina Sus, Tachrim Zetryana Puteri   +5 more
doaj   +1 more source