Protection of fish oil from oxidation by microencapsulation using freeze-drying techniques

Fluorescence imaging and spectroscopy for real-time, in-situ characterization of interactions of free radicals with oil-in-water emulsions

“…These approaches can be broadly classified into two categories: (1) reducing radical generation using metal chelators or scavenging radicals using sacrificial antioxidants (Choe & Min, 2006;Graf et al, 1984); (2) protecting active ingredients using encapsulation techniques (Frankel, 1996;Maestre, Pazos, Iglesias, & Medina, 2009). Encapsulation matrix can provide a physical barrier to limit interactions of free radicals generated in a bulk phase with active ingredients enclosed in an encapsulation barrier (Frankel, Huang, Aeschbach, & Prior, 1996;Heinzelmann, Franke, Jensen, & Haahr, 2000;Weiss et al, 2008). In many applications, a combination of encapsulation approaches and chemical compounds (e.g.…”

Fish oil encapsulation with chitosan using ultrasonic atomizer

“…Current encapsulation technologies of fish oils are based on spray-drying with the disadvantage that the high temperature used during the drying process accelerate the oxidation of oils. Microencapsulated fish oil production by freezing and subsequent freeze drying yields high-quality stability products (Heinzelmann & Franke, 1999;Heinzelmann, Franke, Jensen, & Haahr, 2000). The encapsulation using double emulsification and an enzymic gelation method using microbial transglutaminase cross-linked proteins was another method used to prepare proteinbased microcapsules containing fish oils, which improves the stability of the ingredients and allows controlled release (Cho, Shim, & Park, 2003).…”

Determination of thiobarbituric acid reactive substances in microencapsulated products

“…Many materials have been used to coat oil droplets using spray drying: dairy proteins, gelatin, maltodextrins, starch, gum acacia, alginate, among others (Heinzelmann, Franke, Jensen, & Haahr, 2000;Hogan, O'Riordan, & O'Sullivan, 2003). In preliminary stages of microencapsulation projects, the mass of materials may be limited during researching formulations and process parameters, e.g., only several grams of powdered products.…”