Spray Drying of Goat Milk Protein Hydrolysates with Angiotensin Converting Enzyme Inhibitory Activity
Metadatos
Afficher la notice complèteEditorial
Springer
Materia
ACE inhibitory activity Response surface methodology Spray drying Goat milk protein Enzymatic hydrolysis
Date
2013-12-03Referencia bibliográfica
Espejo-Carpio, F.J., Guadix, A., Guadix, E.M. (2014). Spray Drying of Goat Milk Protein Hydrolysates with Angiotensin Converting Enzyme Inhibitory Activity. Food and Bioprocess Technology, 7 2388-2396.
Patrocinador
Consejería de Innovación, Ciencia y Empresa of Junta de Andalucía (P07-TEP-02579)Résumé
A goat milk hydrolysate was stabilized by spray drying using different inlet air temperatures (170-230 °C) and feed flow rates (4-12 mL/min) following a central composite experimental design. In order to evaluate the effect of operational conditions on process yield, powder properties (density, moisture, hygroscopicity, and solubility) as well as angiotensin converting enzyme (ACE) inhibitory activity, experimental data were analyzed by response surface methodology. Input variables showed a significant influence on yield, density, and moisture, while hygroscopicity, solubility, and ACE inhibitory activity were not affected. The dried hydrolysate presented an average IC50 value of 273.13 μg/mL, which involved a loss of 25 % in ACE inhibitory activity with respect to the feed. The variations detected in the low molecular weight fractions of the dried hydrolysates could be responsible for the variations in ACE inhibitory activity.