What are the ligands used in affinity chromatography?
The ligands used in affinity chromatography are obtained from both organic and inorganic sources. Examples of biological sources are serum proteins, lectins and antibodies. Inorganic sources are moronic acid, metal chelates and triazine dyes.
What is the stationary phase used in affinity chromatography?
The principle of affinity chromatography is that the stationary phase consists of a support medium (e.g. cellulose beads) on which the substrate (or sometimes a coenzyme) has been bound covalently, in such a way that the reactive groups that are essential for enzyme binding are exposed.
What is ligand in chromatography?
Ligand-exchange chromatography is a type of chromatography in which the stationary phase is a cation-exchange resin loaded with a metal ion (e.g., of a transitional metal) that is able to form coordinative bonds with the molecules from the mobile phase.
What is the stationary and mobile phase in affinity chromatography?
In general, chromatography occurs with a solid support (often called a resin or matrix) packed into a column, forming a stationary phase. The mobile phase, a solution containing a mixture of molecules, is moved through the column from one end to the other.
In which chromatography stationary phase is more polar than mobile phase?
In NP-HPLC the stationary phase is more polar than the mobile phase and the interaction between analyte and column has predominantly polar character (hydrogen bonding, π–π or dipole–dipole interactions, etc.).
Which of the following stationary phase is not used in gel filtration chromatography?
Which of the following stationary phase is not used in gel filtration chromatography? Explanation: The resin beads are not used as stationary phase in gel filtration chromatography. Sephadex, Sephacryl, Bio-Gel, Sepharose, etc. are commonly used.
What is chromatography mobile phase?
Phases. Chromatography relies on two different ‘phases’: the mobile phase is the solvent that moves through the paper, carrying different substances with it. the stationary phase is contained on the paper and does not move through it.
Which type of mobile phase is used in paper chromatography?
liquid
In column chromatography, the stationary phase or adsorbent is a solid and the mobile phase is a liquid. The most commonly used stationary phases are silica gel and alumina. The mobile phase or eluent is a pure solvent or a mixture of solvents.
What is used as the stationary phase in paper chromatography?
The stationary phase in paper chromatography is the strip or piece of paper that is placed in the solvent. In thin-layer chromatography the stationary phase is the thin-layer cell. Both these kinds of chromatography use capillary action to move the solvent through the stationary phase.
What is the stationary phase?
Stationary phase is the stage when growth ceases but cells remain metabolically active. Several physical and molecular changes take place during this stage that makes them interesting to explore. The characteristic proteins synthesized in the stationary phase are indispensable as they confer viability to the bacteria.
In which chromatography stationary phase is less polar than mobile phase?
Stationary phases are usually very polar, while mobile phases vary widely in polarity, but are less polar than the stationary phase. This is called normal phase (NP) chromatography. The exception is reverse phase (RP) chromatography, in which a polar mobile phase, and a less polar stationary phase are used.
In which chromatography stationary phase is more polar than mobile phase Mcq?
Reversed phase
Reversed phase is only chromatography that m.p. has more polar compound than stationary phase.