Effect of oil droplet size on the oxidative stability of spray-dried flaxseed oil powders.
The effect of the size of oil droplets on the oxidative stability of flaxseed oil in spray-dried powders was investigated. Maltodextrin with a dextrose equivalent of 25 was used as a wall material, and sodium caseinate and transglutaminase-polymerized sodium caseinate were used as emulsifiers. The oxidative stability of flaxseed oil encapsulated in the spray-dried powders was evaluated using lipid oxidation and conductometric determination tests at 105 °C. The powders containing larger oil droplets exhibited higher surface oil content after spray drying, and higher peroxide value and conductivity after storage at 105 °C. Removal of the surface oil from the powders by washing with hexane significantly decreased the conductivity. The results indicated that the surface oil of the spray-dried flaxseed oil powders affected the oxidation stability.
['Shiga|Hirokazu|H|', 'Loon Neoh|Tze|T|', 'Ninomiya|Ai|A|', 'Adachi|Sae|S|', 'Pasten|Ignacio Lopez|IL|', 'Adachi|Shuji|S|', 'Yoshii|Hidefumi|H|']
D002364:Caseins D003890:Desiccation D004355:Drug Stability D004655:Emulsions D008043:Linseed Oil D015227:Lipid Peroxidation D010084:Oxidation-Reduction D010316:Particle Size D011134:Polysaccharides D011208:Powders D013499:Surface Properties
casein encapsulation spray drying emulsion oil droplet size n-3 polyunsaturated fatty acid