Journal
TALANTA
Volume 175, Issue -, Pages 488-494Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.talanta.2017.07.075
Keywords
Molecular crowding agent; Molecularly imprinted polymer; Procyanidin B2; Solid phase extraction; Heterogeneous crowding environments; Polyethylene glycol
Categories
Funding
- Joint Funds of National Natural Science Foundation of China [U1303202]
Ask authors/readers for more resources
The topic in the present work is to prepare molecularly imprinted polymer (MIP) in heterogeneous crowding surrounding for improving imprinting effect. For the first time, heterogeneous crowding surrounding was made up of a tetrahydrofuran (THF) solution of low molecular weight polyethene glycol (PEG) and high molecular weight polystyrene (PS). The MIP prepared in heterogeneous crowding surrounding against procyanidin B2 can display apparent imprinting effect (imprinting factor of 5.13) in the situation of difficult imprinting at single crowding surrounding or non-crowding surrounding. The necessity of simultaneous use of low and high molecular weight crowding agents for enhanced imprinting effect was further proved. NMR peak shifts of active hydrogen of procyanidin B2 strongly suggested that the interaction between functional monomer and template can be enhanced due to the effect of heterogeneous crowding in the self-assembly process. The influence of molecular weight and amount of PEG, molecular weight of PS, as well as the ratio of procyanidin B2 to functional monomer on the imprinting factor was investigated. The MIP was then used to extract purify procyanidin B2 from extract of grape seed. The recovery of procyanidin B2 obtained was 87% with relative standard deviation of less than 5%.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available