Journal of Food Science and Technology

, Volume 54, Issue 3, pp 770–777 | Cite as

The effective and selective separation of (−)-epigallocatechin gallate by molecularly imprinted chitosan beads

Original Article


The ()-epigallocatechin gallate (EGCG) imprinted chitosan beads (EICBs) were fabricated for the effective and selective separation of EGCG. The EGCG molecules interacted with the amino groups of chitosan in the imprinting process, resulting in a highly porous structure of EICBs and more adsorption sites. Consequently, EICBs exhibited better adsorption performance than non-imprinted chitosan beads. The maximum adsorption capacity of EGCG onto EICBs reached 135.50 mg/g at 313 K. The imprinting factor of EICBs was 4.22, indicating that EICBs possess good recognition ability and selectivity for EGCG. After five cycles of reuse, only a slight decrease (7.77%) in the adsorption capacity was observed, demonstrating the satisfactory reusability of EICBs. Furthermore, the adsorption of EGCG onto EICBs is deduced to be the monolayer adsorption on an energetically homogeneous surface; the hydrogen bonding between EGCG and EICBs is the main driving force for the adsorption. Our studies suggest that EICBs have a great potential for the effective and selective separation of EGCG.


()-Epigallocatechin gallate Chitosan Molecular imprinting technique Adsorption 



This work was supported by the Natural Science Foundation of Hebei Province (No. B2016202111).


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Copyright information

© Association of Food Scientists & Technologists (India) 2017

Authors and Affiliations

  1. 1.School of Chemical Engineering and TechnologyHebei University of TechnologyTianjinChina

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