23.4.2.2 Dialysis Method
For rendering p
R
t become salt free (Isoionic), it is one of the oldest methods,
however, two problems arise often with conventional dialysis: Because of presence
of appreciable amount of p
R
t , the salt diffuses outward and swelling of the dialysis
bag occurs, these total things for osmotic effects. It is uncertain where the Isoionic
point is? If it is workable to deionize by dialysis against buffer. Automatically
adjusts a p
R
t precisely to its Isoionic pH without prior knowledge of the same by
resin deionization method, so this method also known as Dintzis method. It traps
the counter ions exchange between salt ions and p
R
t through the membrane and
outside in the exchanger resins. The precipitated p
R
t in the dialysis tubing is
recovered by centrifugation of the bag’s contents when the exchange is completed.
The dialysis technique is time consuming method as compare to flow-through
column method.
23.4.3 Reversed-Phase High-Performance Liquid
Chromatography (RP-HPLC)
The P E
pt and p
R
t obtained from synthetically or biologically are used for both
preparations and analytical applications can isolate by a versatile technique known
as RP-HPLC. Separation of molecule from the mobile phase to immobilized
hydrophobic ligands attached to the stationary phase is the function of this technique. The stationary phase containing n-alkyl silica whereas acetonitrile containing
an ionic modifier trifluoroacetic (TFA) used in a gradient analysis of RP-HPLC.
Pharmaceutically important p
R
t like; P E
pt , globular p
R
t , and p
R
t having molecular
weight 10,000 undergo purification by this technique. Because of hydrophobicity of
n-alkyl silica and acidic buffering S ys
T supports results into loss of biological
activity of larger poly P E
pt. This technique is very limited in large scale of
utilisation.
23.4.4 Mass Spectrometry of p
R
t
Electrospray and matrix-assisted laser desorption ionization (MALDI) techniques
are used because it is too difficult to ionize and transfer of large and polar biomolecules in to the gas phase. The major areas where the Mass spectrometry in
proteomics are used (a) Identification of p
R
t , either in large scale proteomic ones or
in classical biochemical projects (b) Characterization of macromolecule, recombinant p
R
t , and quality control of p
R
t in biotechnology (c) It applies for detection of
molecular weight of the p
R
t .
808
O. P. Panda et al.
For rendering p
R
t become salt free (Isoionic), it is one of the oldest methods,
however, two problems arise often with conventional dialysis: Because of presence
of appreciable amount of p
R
t , the salt diffuses outward and swelling of the dialysis
bag occurs, these total things for osmotic effects. It is uncertain where the Isoionic
point is? If it is workable to deionize by dialysis against buffer. Automatically
adjusts a p
R
t precisely to its Isoionic pH without prior knowledge of the same by
resin deionization method, so this method also known as Dintzis method. It traps
the counter ions exchange between salt ions and p
R
t through the membrane and
outside in the exchanger resins. The precipitated p
R
t in the dialysis tubing is
recovered by centrifugation of the bag’s contents when the exchange is completed.
The dialysis technique is time consuming method as compare to flow-through
column method.
23.4.3 Reversed-Phase High-Performance Liquid
Chromatography (RP-HPLC)
The P E
pt and p
R
t obtained from synthetically or biologically are used for both
preparations and analytical applications can isolate by a versatile technique known
as RP-HPLC. Separation of molecule from the mobile phase to immobilized
hydrophobic ligands attached to the stationary phase is the function of this technique. The stationary phase containing n-alkyl silica whereas acetonitrile containing
an ionic modifier trifluoroacetic (TFA) used in a gradient analysis of RP-HPLC.
Pharmaceutically important p
R
t like; P E
pt , globular p
R
t , and p
R
t having molecular
weight 10,000 undergo purification by this technique. Because of hydrophobicity of
n-alkyl silica and acidic buffering S ys
T supports results into loss of biological
activity of larger poly P E
pt. This technique is very limited in large scale of
utilisation.
23.4.4 Mass Spectrometry of p
R
t
Electrospray and matrix-assisted laser desorption ionization (MALDI) techniques
are used because it is too difficult to ionize and transfer of large and polar biomolecules in to the gas phase. The major areas where the Mass spectrometry in
proteomics are used (a) Identification of p
R
t , either in large scale proteomic ones or
in classical biochemical projects (b) Characterization of macromolecule, recombinant p
R
t , and quality control of p
R
t in biotechnology (c) It applies for detection of
molecular weight of the p
R
t .
808
O. P. Panda et al.