화학공학소재연구정보센터
Powder Technology, Vol.291, 276-283, 2016
Compressible extruded granules containing microencapsulated oil powders
Gelatine-based dough formulations (47%, 60% or 70% w/w total solids) with embedded microencapsulated fish oil powders were extruded, dried and compressed to obtain tablets with 35% w/w oil. The effects of dough total solids and pre-conditioning temperature (20, 35 or 50 degrees C) prior to extrusion on the amount of oil leakage from the tablets were examined. Oil leakage from tablets was lowest when made from extrudates of dough with 47% w/w TS and pre-conditioned at 35 degrees C. Increasing dough total solids increased oil leakage. This suggests that adequate hydration of the matrix, necessary for functionalization of the protein, was essential for subsequent tableting performance. The ability to make directly compressible formulations with embedded microencapsulated oil powders broadens the application of spray-dried fish oil powders into the nutritional supplement markets. (C) 2016 Elsevier B.V. All rights reserved.