Abstract
Uniform magnetic separable robust microbeads using a branched polymer were successfully developed for stable enzyme immobilization. The changed morphology of the microbeads was shown by scanning electron microscopy (SEM) analysis. The aldehyde groups on the polymers and imine groups derived from the Schiff base reaction between the aldehyde and amine moiety were found as the evidence of these reactions based on Fourier transform infrared (FT-IR) spectroscopy. The amine groups of the enzyme react with the aldehyde groups on the glutaraldehyde polymer so that the stable conjugations are formed. The specific activity of the conjugated enzyme was found to be retained more than 50%, but the reaction rate constant, Km value was not changed, compared to the free enzyme. In addition, the enzyme conjugated in the microbeads was found to be highly stable for more than 50 days, pertaining over 60% of its initial activity, even after being reused more than 15 times repeatedly. Furthermore, the magnetic-driven controllability provided facile separable characters for the repeated recycling. It is expected that these microbeads can be utilized as a key tool for successful realization not only in enzymatic conversion processes but also in extended fields; bio-based sensors or analytical devices, bioprocessing, bioremediation, to name only a few of numerous areas.
| Original language | English |
|---|---|
| Pages (from-to) | 39-45 |
| Number of pages | 7 |
| Journal | Reactive and Functional Polymers |
| Volume | 73 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 2013 Jan 1 |
Fingerprint
Keywords
- Branched polymers
- Enzyme conjugation
- Magnetic separability
- Micro-hydrogel
ASJC Scopus subject areas
- Materials Chemistry
- Polymers and Plastics
- Chemistry(all)
- Chemical Engineering(all)
- Environmental Chemistry
- Biochemistry
Cite this
Magnetic-separable robust microbeads using a branched polymer for stable enzyme immobilization. / Chung, Jinyang; Hwang, Ee Taek; Gang, Haemin; Gu, Man Bock.
In: Reactive and Functional Polymers, Vol. 73, No. 1, 01.01.2013, p. 39-45.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Magnetic-separable robust microbeads using a branched polymer for stable enzyme immobilization
AU - Chung, Jinyang
AU - Hwang, Ee Taek
AU - Gang, Haemin
AU - Gu, Man Bock
PY - 2013/1/1
Y1 - 2013/1/1
N2 - Uniform magnetic separable robust microbeads using a branched polymer were successfully developed for stable enzyme immobilization. The changed morphology of the microbeads was shown by scanning electron microscopy (SEM) analysis. The aldehyde groups on the polymers and imine groups derived from the Schiff base reaction between the aldehyde and amine moiety were found as the evidence of these reactions based on Fourier transform infrared (FT-IR) spectroscopy. The amine groups of the enzyme react with the aldehyde groups on the glutaraldehyde polymer so that the stable conjugations are formed. The specific activity of the conjugated enzyme was found to be retained more than 50%, but the reaction rate constant, Km value was not changed, compared to the free enzyme. In addition, the enzyme conjugated in the microbeads was found to be highly stable for more than 50 days, pertaining over 60% of its initial activity, even after being reused more than 15 times repeatedly. Furthermore, the magnetic-driven controllability provided facile separable characters for the repeated recycling. It is expected that these microbeads can be utilized as a key tool for successful realization not only in enzymatic conversion processes but also in extended fields; bio-based sensors or analytical devices, bioprocessing, bioremediation, to name only a few of numerous areas.
AB - Uniform magnetic separable robust microbeads using a branched polymer were successfully developed for stable enzyme immobilization. The changed morphology of the microbeads was shown by scanning electron microscopy (SEM) analysis. The aldehyde groups on the polymers and imine groups derived from the Schiff base reaction between the aldehyde and amine moiety were found as the evidence of these reactions based on Fourier transform infrared (FT-IR) spectroscopy. The amine groups of the enzyme react with the aldehyde groups on the glutaraldehyde polymer so that the stable conjugations are formed. The specific activity of the conjugated enzyme was found to be retained more than 50%, but the reaction rate constant, Km value was not changed, compared to the free enzyme. In addition, the enzyme conjugated in the microbeads was found to be highly stable for more than 50 days, pertaining over 60% of its initial activity, even after being reused more than 15 times repeatedly. Furthermore, the magnetic-driven controllability provided facile separable characters for the repeated recycling. It is expected that these microbeads can be utilized as a key tool for successful realization not only in enzymatic conversion processes but also in extended fields; bio-based sensors or analytical devices, bioprocessing, bioremediation, to name only a few of numerous areas.
KW - Branched polymers
KW - Enzyme conjugation
KW - Magnetic separability
KW - Micro-hydrogel
UR - http://www.scopus.com/inward/record.url?scp=84870221988&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84870221988&partnerID=8YFLogxK
U2 - 10.1016/j.reactfunctpolym.2012.10.001
DO - 10.1016/j.reactfunctpolym.2012.10.001
M3 - Article
VL - 73
SP - 39
EP - 45
JO - Reactive and Functional Polymers
JF - Reactive and Functional Polymers
SN - 1381-5148
IS - 1
ER -