Encapsulation of volatiles in nanofibrous polysaccharide membranes for humidity-triggered release
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- 作者：Erika Mascheroni ; Carlos Alberto Fuenmayor ; Maria Stella Cosio ; Giuseppe Di Silvestro ; Luciano Piergiovanni ; Saverio Mannino ; Alberto Schiraldi
- 关键词：Pullulan ; Cyclodextrins ; Encapsulation ; Aroma compounds ; Controlled release ; Nanofibers
- 刊名：Carbohydrate Polymers
- 出版年：2013
- 出版时间：15 October, 2013
- 年：2013
- 卷：98
- 期：1
- 页码：17-25
- 全文大小：1822 K
文摘
A single-step electrospinning process will be applied to a blend of edible carbohydrate polymers (pullulan and ¦Â-cyclodextrin) to encapsulate bioactive aroma compounds and allow a humidity-triggered release. The encapsulation is rapid and efficient and the final product is an active nanofibrous membrane that can be directly used for food or active packaging applications. The membrane hosts small and homogeneously dispersed crystals of cyclodextrin-aroma complexes which are formed during the electrospinning. With this type of structure, the release of aroma compound is negligible at ambient conditions (23 ¡ãC and 55 % UR) even at high temperature (up to 230 ¡ãC), and it occurs beyond a given relative humidity threshold (90 % ), useful for food packaging applications. The mass fraction of free aroma released is directly related to the water activity of the system, namely, explaining the observed key role played by the relative humidity on the release of the aroma compounds.