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AMBERLITE™ XAD™ Adsorbent Resins
for Capture, Desalting and Decolorization
Polymeric adsorbents are highly porous structures whose internal surfaces can adsorb and then desorb a wide variety of different species depending on the environment in which they are used. For example, in polar solvents such as water, polymeric adsorbents exhibit non-polar or hydrophobic behaviour and so can adsorb organic species that are sparingly soluble. This hydrophobicity is most pronounced with the styrenic adsorbents. In non-polar solvents, such as hydrocarbons, etc. most adsorbents exhibit slightly polar or hydrophilic properties and so will adsorb species with some degree of polarity. This polarity is most pronounced with the acrylic adsorbents and the phenolic adsorbents.
Purification strategies are developed to utilize these performance characteristics. In capture/concentration mode, Amberlite™ XAD™ media provide an excellent first purification step in the recovery of antibiotics such as Ceph C from complex fermentation broths. In the same application XAD™ resins perform decolorization and desalting functions as well.
|
AMBERLITE™ |
Chemistry |
Surface area (m2/g) |
Av. Pore diameter (Å) |
Mean diameter (µ) |
UC D90/D40 |
Applications |
|
pStyDVB* |
750 |
100 |
640 |
1.6 |
Removal of solvents and low MW species | |
|
pStyDVB* |
800 |
150 |
700 |
1.6 |
Small molecules, antibiotic recovery | |
pStyDVB* |
800 |
150 |
425 |
1.7 |
Recovery and purification of antibiotics, natural products, amino acids and proteins | |
|
pStyDVB* |
500 |
400 |
530 |
1.6 |
Plant extracts, large MW product recovery | |
|
pStyDVB* |
800 |
150 |
400 |
1.2 |
Antibiotic recovery, chromatography | |
|
Aliphatic ester |
500 |
450 |
560 |
1.7 |
Plant extract, enzyme purification, peptides | |
|
Formophenolic |
200 |
600 |
700 |
1.5 |
Plant extracts, enzyme purification, peptides | |
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Additional Information:
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