title: Physicochemical Properties and Storage Stability of Microencapsulated DHA-Rich Oil with Different Wall Materials.
abstract: This study aimed to evaluate the physicochemical properties and storage stability of microencapsulated DHA-rich oil spray dried with different wall materials: model 1 (modified starch, gum arabic, and maltodextrin), model 2 (soy protein isolate, gum arabic, and maltodextrin), and model 3 (casein, glucose, and lactose). The results indicated that model 3 exhibited the highest microencapsulation efficiency (98.66 %) and emulsion stability (>99 %), with a moisture content and mean particle size of 1.663 % and 14.173 μm, respectively. Differential scanning calorimetry analysis indicated that the Tm of DHA-rich oil microcapsules was high, suggesting that the entire structure of the microcapsules remained stable during thermal processing. A thermogravimetric analysis curve showed that the product lost 5 % of its weight at 172 °C and the wall material started to degrade at 236 °C. The peroxide value of microencapsulated DHA-rich oil remained at one ninth after accelerated oxidation at 45 °C for 8 weeks to that of the unencapsulated DHA-rich oil, thus revealing the promising oxidation stability of DHA-rich oil in microcapsules.
authors.affiliation: Tianjin Key Laboratory for Industrial Biological Systems and Bioprocess Engineering, Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, No. 32, Xiqi Road, Tianjin Airport Economic Area, Tianjin, 300308, People's Republic of China.
authors.forename: Wuxi
authors.initials: W
authors.lastname: Chen
authors.affiliation: Tianjin Key Laboratory for Industrial Biological Systems and Bioprocess Engineering, Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, No. 32, Xiqi Road, Tianjin Airport Economic Area, Tianjin, 300308, People's Republic of China.
authors.forename: Haijun
authors.initials: H
authors.lastname: Wang
authors.affiliation: Tianjin Key Laboratory for Industrial Biological Systems and Bioprocess Engineering, Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, No. 32, Xiqi Road, Tianjin Airport Economic Area, Tianjin, 300308, People's Republic of China.
authors.forename: Ke
authors.initials: K
authors.lastname: Zhang
authors.affiliation: Tianjin Key Laboratory for Industrial Biological Systems and Bioprocess Engineering, Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, No. 32, Xiqi Road, Tianjin Airport Economic Area, Tianjin, 300308, People's Republic of China.
authors.forename: Feng
authors.initials: F
authors.lastname: Gao
authors.affiliation: Tianjin Key Laboratory for Industrial Biological Systems and Bioprocess Engineering, Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, No. 32, Xiqi Road, Tianjin Airport Economic Area, Tianjin, 300308, People's Republic of China.
authors.forename: Shulin
authors.initials: S
authors.lastname: Chen
authors.affiliation: Tianjin Key Laboratory for Industrial Biological Systems and Bioprocess Engineering, Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, No. 32, Xiqi Road, Tianjin Airport Economic Area, Tianjin, 300308, People's Republic of China. li_dm@tib.cas.cn.
authors.forename: Demao
authors.initials: D
authors.lastname: Li
mesh_terms: D002214:Capsules / Q000737:chemistry*; D002364:Caseins / Q000737:chemistry; D004339:Drug Compounding; D004355:Drug Stability; D004655:Emulsions / Q000737:chemistry; D006170:Gum Arabic / Q000737:chemistry; D006801:Humans; D010084:Oxidation-Reduction; D011134:Polysaccharides / Q000737:chemistry; D011753:Pyrones / Q000737:chemistry*; D030262:Soybean Proteins / Q000737:chemistry; D013213:Starch / Q000737:chemistry
chemical_list: D002214:Capsules; D002364:Caseins; D004655:Emulsions; D011134:Polysaccharides; D011753:Pyrones; D030262:Soybean Proteins; C027493:dehydroacetic acid; C008315:maltodextrin; D006170:Gum Arabic; D013213:Starch
keywords: DHA-rich oil; Microencapsulation storage; Stability; Wall material