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| Preparation process optimization and properties of Malania oleifera oil microcapsules |
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| DOI： |
| KeyWord:Malania oleifera oil microcapsule spray-drying physicochemical property in vitro simulated digestion |
| FundProject:广西研究生教育创新计划项目(GKYC202012)；国家自然科学基金委员会资助项目地区科学(21662003)；广西壮族自治区中青年教师基础能力提升项目(KY2016Y B250)；广西糖资源绿色加工重点实验室主任基金(GXTZY 202005)；大学生创新训练计划项目(202010594214)；广西科技大学博士(校科博14Z06) |
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| Abstract: |
| The Malania oleifera oil microcapsules was prepared via the spray-drying using gum acacia and maltodextrin as wall materials. The effects of solid content, emulsifier dosage, gum acacia/maltodextrin ratio, core/wall ratio, inlet air temperature and feed flow rate on microencapsulation efficiency were investigated by single factor experiment. The selected key parameters were optimized using response surface methodology with Box-Behnken experimental design. The SEM, particle size analyzer, thermogravimentric analyzer, and in vitro simulated digestion etc. were used to analyze the properties of microcapsules. The results showed that the optimal conditions were obtained as follows: solid content 16%, emulsifier dosage 1%, gum acacia/maltodextrin ratio 4∶ 3, core/wall ratio 1∶ 4, inlet air temperature 160 ℃ and feed flow rate 4 mL/min. Under these conditions, the microencapsulation efficiency was 76.92%. The Malania oleifera oil microcapsules had integrious structure, uniform particle size, good fluidity, dispersibility and thermal stability. The encapsulated oil was released from microcapsules after simulated gastrointestinal digestion. Microencapsulation of Malania oleifera oil could protect the effective components in Malania oleifera oil, improve its digestion and absorption effect, and expand its application range. |
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