Results 31 to 40 of about 2,291,633 (330)

Column Chromatography

Definitions, 2020
Column chromatography is used extensively in nucleic acid chemistry to purify or characterize products from chemical reactions. This appendix focuses on separations using silica gel or alumina.

semanticscholar   +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

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

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

Separation Options for Phosphorylated Osteopontin from Transgenic Microalgae Chlamydomonas reinhardtii. [PDF]

, 2018
Correct folding and post-translational modifications are vital for therapeutic proteins to elicit their biological functions. Osteopontin (OPN), a bone regenerative protein present in a range of mammalian cells, is an acidic phosphoprotein with multiple ...
Guo, Shengchun, Mayfield, Stephen, Nikolov, Zivko L, Rasala, Beth, Ravi, Ayswarya, Tran, Miller   +5 more
core   +2 more sources

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

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

Isolation of leptin hormone from plasma and molecular weight estimation using bio techniques [PDF]

مجلة التربية والعلم, 2009
The research include the isolation of leptin hormone from plasma of female by gel filtration chromatography technique using separating column 1002Cm containing Sephadex G - 75 produced 5 bands where number 5 showed leptin concentration 0.5ng/ml.
Nawal Thnoon Youis, Qusi Al Jalabi, Thikra Ali   +2 more
doaj   +1 more source

In pursuit of β-amino α-nitro β-trifluoromethyl ketones: nitro-Mannich vs Mannich-type reactions [PDF]

, 2017
The reactivity of alfa-nitro ketones with trifluoromethyl aldimines is studied for the first time. While under nitro-Mannich conditions only the facial stereoselectivity can be controlled, organocatalysed Mannich-type reactions allowed a complete control
Ballini, Ballini, Ballini, Ballini, Bhadury, Carroccia, Carroccia, Chen, Claridge, Córdova, Dighe, Dinér, Donslund, Fioravanti, Fioravanti, Fioravanti, Fioravanti, Fioravanti, Gao, Ghosh, Hatano, Hurd, Ibrahem, Ilies, Kano, Kano, Kelly, Kobayashi, Kokotos, Levy, Merino, Mitsumori, Moteki, Nguyen, Nie, Noble, Parise, Parise, Pelagalli, Stach, Walaszek, Yang, Yin, Zhang, Zhang, Zheng   +45 more
core   +1 more source