Encapsulation efficiency and oxidative stability of flaxseed oil microencapsulated by spray drying using different combinations of wall materials

Author(s)

Carneiro, Helena C. F. ^[1] ; Tonon, Renata V. ^[2] ; Grosso, Carlos R. F. ^[3] ; Hubinger, Miriam D. ^[1]

Affiliation

^[1] Univ Estadual Campinas, Fac Food Engn, Dept Food Engn, Campinas, SP - Brazil

^[2] Embrapa Food Technol, Rio De Janeiro, RJ - Brazil

^[3] Univ Estadual Campinas, Fac Food Engn, Dept Food & Nutr, Campinas, SP - Brazil

• Document type: Journal article
• Source: Journal of Food Engineering; v. 115, n. 4, p. 443-451, APR 2013.
• Web of Science Citations: 265

Abstract

This study aimed at evaluating the potential of maltodextrin combination with different wall materials in the microencapsulation of flaxseed oil by spray drying, in order to maximize encapsulation efficiency and minimize lipid oxidation. Maltodextrin (MD) was mixed with gum Arabic (GA), whey protein concentrate (WPC) or two types of modified starch (Hi-Cap 100 (TM) and Capsul TA (R)) at a 25:75 ratio. The feed emulsions used for particle production were characterized for stability, viscosity and droplet size. The best encapsulation efficiency was obtained for MD:Hi-Cap followed by the MD:Capsul combination, while the lowest encapsulation efficiency was obtained for MD:WPC, which also showed poorer emulsion stability. Particles were hollow, with the active material embedded in the wall material matrix, and had no apparent cracks or fissures. During the oxidative stability study, MD:WPC combination was the wall material that best protected the active material against lipid oxidation. (C) 2012 Elsevier Ltd. All rights reserved. (AU)

• FAPESP's process: 09/54137-1 - Acquisition of a particle size/distribution analyzer, a zeta potential measurement system, a spray dryer, and an ultra-high-pressure liquid chromatograph/mass spectrometer
• Grantee: Miriam Dupas Hubinger
• Support Opportunities: Multi-user Equipment Program