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Volume 7, Issue 6(Suppl) J Chromatogr Sep Tech
ISSN: 2157-7064 JCGST, an open access journal
Page 63
Notes:
Separation Techniques 2016
September 26-28, 2016
conferenceseries.com
Separation Techniques
September 26-28, 2016 Valencia, Spain
2nd International Conference and Expo on
Effective adsorption and concentration of carnosine by nickel species within mesoporous silica
Liming Zhao
East China University of Science and Technology, China
Owing to the abundant existence, low-value food stuff, such as egg-laying hens, might be cheap resource of histidine-
containing peptides, such as carnosine (Car), which have various functions with attractive application as food supplements.
Herein, carboxyl group functionalized mesoporous silica of SBA-15 was synthesized to facilely incorporating NiO, ZnO and
CoO for Car extraction. Among these, Ni/SBA-15 has the highest adsorption capability. The correlation between the most
significant parameters such as adsorbent dose, pH, background salts, contact times, Car concentration and the elution was
optimized, and the effects of these parameters on the adsorption efficiency of Car were investigated. Thanks to the adequate
pore size and high Ni loading, the adsorption capacity of Car onto Ni50 /SBA-15 approached as high as 0.839 mmol (188.4) g-1 .
The excellent adsorption characteristics of the current adsorbents toward Car were preserved in a wide pH window and could
be hardly infected by the concentration of the background salts. The pseudo-second-order rate equation effectively described
the uptake kinetics. The Langmuir model exhibited a better fit to adsorption isotherm than the Freundlich model. Therefore,
nickel immobilized carboxyl functionalized SBA-15 is an efficient method for recovering histidine-containing peptides from
muscle slurry of egg-laying hens and makes them favorable candidates as chromatographic columnmaterials for HCPs analysis.
Biography
Liming Zhao has completed his PhD from Jiangnan University (China). He is Professor and Director of a research center focusing on separation and purification
technology (membrane and chromatography) at East China University of Science and Technology. He has published more than 50 papers in reputed journals and
2 monographs, and serving as an Editorial Board Member of repute.
Liming Zhao, J Chromatogr Sep Tech 2016, 7:6(Suppl)