Search

ABSTRACT This work demonstrates that self-disproportionation of enantiomers via achiral chromatography can be recommended as inexpensive and general method for optical purifica- tion of enantiomerically enriched compounds. In particular, the advantage of this approach over conventional recrystallization is that it can be used for both crystalline as well as liquid com- pounds. Chirality, 25:365-368, 2013. © 2013 Wiley Periodicals, Inc. [ABSTRACT FROM AUTHOR]

Review: [117 refs. [ABSTRACT FROM AUTHOR]

The article focuses on the separation and purification of daphnetin, daphnodorin B, p-hydroxybenzoic acid, and daphnodorin D 1 in Daphne odora var. Margirmt plant through high-speed counter-current chromatography (HSCCC). It explains that Daphne odora var. Margirmt is a flower and medical plant from the family of Thymelaeaceae. It cites how the dried plant was chopped into small pieces and extracted with a solvent mixture that composed of 95% ethyl acetate and ethanol.

The article focuses on the use of Kromasil CelluCoat in the analysis and purification of chiral compounds. Kromasil CelluCoat refers to a silica based chiral stationary phases (CSP) coated with tris-carbamoyl cellulose as the chiral selector. The analysis involves a factor of selectivity that leads to enantiomer separation, which leads to the speed of separation.

The article cites a study focusing on the use of a nonoxidative, nonchromatographic method for the removal of the contaminant D5h isomer. The researchers in this study used a reactive diamio silica with the stir and field approach (SAFA) and compared the reactivity of this isomer relative to the Sc3N@C80 isomer and empty cage fullerness. It was concluded that the SAFA process with diamino silica rapidly removes the D5h contaminant.

The article present information about introduction of new polymeric reversed-phase columns, Amberchrom™ Profile™. These columns have been developed for the purification of peptides and oligonucleotides by reversed-phase chromatography. The columns have been able to achieve the purification target yield of eighty percent at more than ninety five percent purity in the purification of influenza peptide, that is used in the area of vaccine development..

Describes the use of the multiOPLC system, an Optimum Performance Laminar Chromatography system that incorporates the Flowing Eluent Wall Technology, to perform simultaneous semi-preparative scale separations of complex samples. Reagents and separation media; Instrumentation; Capability of the system to produce four independent channels on an unsegmented flat-bed column.

Demonstrates the utility of Atlantis dC[sub 18] columns via the separation and purification of three mixtures of polar compounds. Experimental conditions; Description of Atlantis dC[sub 18] reversed-phase columns; Retention and separation of the sulphonamides on the analytical column.

Review: 79 refs. [ABSTRACT FROM AUTHOR]

Review: [54 refs. [ABSTRACT FROM AUTHOR]

Review: report on a synthetic strategy that allows the separation of enantiomerically ure planar chiral rotaxanes; 10 refs. [ABSTRACT FROM AUTHOR]

BSTRACT A comparison of the effectiveness of two procedures, ammonium sulfate fractionation and concanavalin A affinity (Con A) chromatography, for the purification of β-conglycinin from soy flour was made. In addition, the effect of toasting on the effectiveness of these two procedures for purifying β-conglycinin was studied. Results indicated that Con A affinity chromatography was less effective than the ammonium sulfate fractionation for the purification of β-conglycinin. The ammonium sulfate fractionation produced nearly homogeneous β-conglycinin; however, the yield from this procedure was very low (4.1%). Toasting the soy flour decreased the purification effectiveness of both procedures. [ABSTRACT FROM AUTHOR]

Review: 75 refs. [ABSTRACT FROM AUTHOR]

Review: 192 refs. [ABSTRACT FROM AUTHOR]

Review: 22 refs. [ABSTRACT FROM AUTHOR]

Review: 157 refs. [ABSTRACT FROM AUTHOR]

Review: 29 refs. [ABSTRACT FROM AUTHOR]

US-based filtration, separation and purification firm Pall Corp is now offering 5-ml PRC pre-packed chromatography columns to deliver faster and more consistent protein purification processing. [Copyright &y& Elsevier]

ÄKTA pilot is a high-performance, automated liquid chromatography system designed for process development, process scale-up, process scale-down, and small-scale production. The system consists of theÄKTA pilot separation unit, a computer including a flat-screen monitor, and a UNICORN control system. UNICORN ensures quick, simple communication between systems and users and meets the stringent control and data handling procedures of modern production and laboratory facilities.