Adsorption of alpha-lactalbumin from milk whey on hydroxyapatite: effect of pH and temperature and thermodynamic analysis

Quimica nova

Coimbra, Jane Sélia dos Reis¹  Reis, Leomir Samuel Tormen¹  Sousa, Rita de Cássia Superbi de¹  Augusto, Liliana de Luca Xavier¹ 

[1] Universidade Federal de Viçosa, Viçosa, Brasil

关键词: bioseparation;    Gibbs free energy;    Langmuir model.;   

DOI  :  10.5935/0100-4042.20140149

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 摘 要 】

The nutritional and functional benefits offered by whey protein α-lactalbumin justify the great interest in its manufacture in large quantities at a high purity level. Hydroxyapatite is a calcium phosphate material able to adsorb proteins and can be synthesized at low production cost. Therefore, this work evaluated the adsorption of α-lactalbumin on hydroxyapatite using solid-liquid phase equilibrium data reported as adsorption isotherms. Van't Hoff's thermodynamics analysis showed that the adsorption process is entropically driven.

【 授权许可】

CC BY