Preparation of aroma microcapsules with sodium alginate and tetradecylallyldimethylammonium bromide (TADAB) and its potential applications in cosmetics,Flavour and Fragrance Journal

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Preparation of aroma microcapsules with sodium alginate and tetradecylallyldimethylammonium bromide (TADAB) and its potential applications in cosmetics
Flavour and Fragrance Journal ( IF 2.1 ) Pub Date : 2017-09-15 , DOI: 10.1002/ffj.3411
Jia Song ₁ , Hongling Chen ₁

Affiliation

The formation of apple aroma microcapsules was achieved by sodium alginate (SA) and tetradecylallydimethylammonium bromide (TADAB) as shells based on complex coacervation‐emulsion polymerization. Alkyl alcohol polyoxyethylene ether was employed as emulsifier. Pentaerythritol tetraacrylate (PETRA) was used as a crosslinking agent and methyl methacrylate (MMA) was applied as comonomer to copolymerize with TADAB. The aroma microcapsules were characterized by scanning electron microscopy (SEM). Results showed that the aroma microcapsules prepared under optimal conditions were core‐shell structure. The aroma microcapsules were sphere‐like shape with particle size between 20 to 50 μm. FT‐IR analysis results showed that the electrostatic interactions and polymerization occurred assuredly. TG‐DTA study indicated that the thermal stability of the aroma microcapsules crosslinked with MMA shell was improved, and the thermal resistant temperature was up to 110°C. Moreover, the encapsulation efficiency of aroma microcapsules was measured by ultraviolet–visible near‐infrared spectrophotometer. In the surfactant solution, the release of aroma was quick during the first 8 hours, losing ca. 10.8% aroma encapsulated, however, there was no more else aroma dissolving out from the 9^th hour. In open conditions, the encapsulation efficiency of the aroma microcapsules kept 66.57% after 48 hours, compared with the encapsulation efficiency going down alone if the microcapsules were milled.

中文翻译：

海藻酸钠和十四烷基烯丙基二甲基溴化铵（TADAB）的香气微胶囊的制备及其在化妆品中的潜在应用

苹果香精微囊的形成是通过海藻酸钠（SA）和十四烷基烯丙基二甲基溴化铵（TADAB）作为壳，基于复杂的凝聚-乳液聚合。烷基醇聚氧乙烯醚用作乳化剂。使用四丙烯酸季戊四醇酯（PETRA）作为交联剂，使用甲基丙烯酸甲酯（MMA）作为共聚单体与TADAB共聚。通过扫描电子显微镜（SEM）表征香气微囊。结果表明，在最佳条件下制备的香气微胶囊为核壳结构。香气微囊呈球形，粒径在20至50μm之间。FT-IR分析结果表明，确实发生了静电相互作用和聚合反应。TG-DTA研究表明，与MMA壳交联的香气微囊的热稳定性得到改善，耐热温度高达110°C。此外，通过紫外可见近红外分光光度计测量了香精微囊的包封效率。在表面活性剂溶液中，在头8小时内香气释放很快，消失了。CA。10.8％的香味包裹，但没有更多别的香味从9溶出^个小时。在开放条件下，香精微胶囊的封装效率在48小时后保持66.57％，相比之下，如果研磨微胶囊，则封装效率会单独下降。

更新日期：2017-09-15

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