Adsorption isotherms of caffeine on molecular imprinted polymer

Yinzhe Jin; Dae-Ki Choi; Kyung Ho Row

Korean Journal of Chemical Engineering, Vol.25, No.4, 816-818, July, 2008

DOI10.1007/s11814-008-0135-x Export Citation

Adsorption isotherms of caffeine on molecular imprinted polymer

Yinzhe Jin, Dae-Ki Choi¹, and Kyung Ho Row^†

Center for Advanced Bioseparation Technology and Dept. of Chem. Eng., Inha University, 253 Yonghyun-dong, Nam-gu, Incheon 402-751, Korea
¹Clean for Fuel Cell Research, Korea Institute of Science and Technology, 39-1, Hawolgok-dong, Sungbuk-gu, Seoul 136-791, Korea

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A molecular imprinted polymer (MIP) using caffeine as the template and methacrylic acid (MAA) as the functional monomer was prepared. Acetonitrile was used as the porogen with ethylene glycol dimethacrylate (EGDMA) as the crosslinker and 2,2'-azobis(isobutyronitrile) (AIBN) as the initiator. By a linear and nonlinear regression analysis, the experimental parameters in the equilibrium isotherms were estimated. Then, the linear and quadratic equations for concentration and sorbents to adsorption amounts were expressed, and the adsorption equilibrium data were also correlated into the Freundlich isotherm model. Comparisons of caffeine adsorption isotherm on C18 particles as well as the molecular imprinted polymer were made. The results showed that the caffeine-imprinted polymer showed extraordinarily higher adsorption ability than C18 particles.

Keywords:Adsorption Isotherm;Molecular Imprinted Polymer;Caffeine;HPLC

[References]

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Row KH, Lee CH, Kang JH, Biotechnol. Bioprocess Eng., 7, 11 (2002)
Yang YJ, Lee CH, Koo YM, Biotechnol. Bioprocess Eng., 9, 331 (2004)
Wang D, Hong SP, Row KH, Korean J. Chem. Eng., 21(4), 853 (2004)
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Blomgren A, Berggren C, Holmberg A, Larsson F, Sellergren B, Ensing K, J. Chromatogr. A, 975, 157 (2002)
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Snowden TS, Anslyn EV, Curr. Opin. Chem. Biol., 3(6), 740 (1999)
Ulbricht M, J. Chromatogr. B, 804, 113 (2004)
Park JK, Kim SJ, Korean J. Chem. Eng., 21(5), 994 (2004)
Wang DX, Hong SP, Row KH, Bull. Korean Chem. Soc., 25(3), 357 (2004)
Kriz D, Mosbach K, Anal. Chim. Acta, 300, 71 (1994)
Piletsky SA, Piletska EV, Bossi A, Karim K, Lowe P, Turner APF, Biosens. Bioelectron., 16, 701 (2001)
Baggiani C, Giraudi G, Giovannoli C, Tozzi C, Anfossi L, Anal. Chim. Acta, 504, 43 (2004)

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[1] Jin Y, Row KH, Korean J. Chem. Eng., 22(2), 264 (2005)

[2] Row KH, Lee CH, Kang JH, Biotechnol. Bioprocess Eng., 7, 11 (2002)

[3] Yang YJ, Lee CH, Koo YM, Biotechnol. Bioprocess Eng., 9, 331 (2004)

[4] Wang D, Hong SP, Row KH, Korean J. Chem. Eng., 21(4), 853 (2004)

[5] Mayes AG, Mosbach K, Trends in Anal. Chem., 16(6), 321 (1997)

[6] Schweitz L, Andersson LI, Niilsson S, Anal. Chem. Acta., 435(1), 43 (2001)

[7] Hwang CC, Lee WC, J. Chromatogr. B, 765, 45 (2001)

[8] Schweitz L, Andersson LI, Nilsson S, J. Chromatogr. A, 792, 401 (1997)

[9] Blomgren A, Berggren C, Holmberg A, Larsson F, Sellergren B, Ensing K, J. Chromatogr. A, 975, 157 (2002)

[10] Yano K, Karube I, Trends in Anal. Chem., 18(3), 199 (1999)

[11] Snowden TS, Anslyn EV, Curr. Opin. Chem. Biol., 3(6), 740 (1999)

[12] Ulbricht M, J. Chromatogr. B, 804, 113 (2004)

[13] Park JK, Kim SJ, Korean J. Chem. Eng., 21(5), 994 (2004)

[14] Wang DX, Hong SP, Row KH, Bull. Korean Chem. Soc., 25(3), 357 (2004)

[15] Kriz D, Mosbach K, Anal. Chim. Acta, 300, 71 (1994)

[16] Piletsky SA, Piletska EV, Bossi A, Karim K, Lowe P, Turner APF, Biosens. Bioelectron., 16, 701 (2001)

[17] Baggiani C, Giraudi G, Giovannoli C, Tozzi C, Anfossi L, Anal. Chim. Acta, 504, 43 (2004)