Double-Layered Microcapsules Significantly Improve the Long-Term Effectiveness of Essential Oil

Abstract

In order to improve the long-term effectiveness of essential oil, a double-layered microcapsule was prepared using the inclusion encapsulation method in this study, with β-cyclodextrin as its inner layer and chitosan and sodium alginate as its outer layer. The optimized preparation process was obtained through the response surface method. The morphology, particle size, encapsulation efficiency, thermal stability and sustained release effect of the double-layered microcapsules were characterized. The microcapsules were spherical, with a particle size distribution between 2–6 μm, and had good thermal stability within 250 °C. Their encapsulation efficiency can be up to 80%, and it can continuously release the active ingredients of the essential oil under normal temperature and high temperature conditions for a long time. In order to further examine the application effect of the double-layered microcapsule, it was loaded onto the cotton fabric by the soak-roll method. The finished cotton fabric showed excellent washability and rubbing fastness. They can still maintain a light fragrance naturally for two months. The microcapsules prepared in this study can be potentially applied in sleep aid, antibacterial, mosquito prevention, food science and other related products.

Thymol ameliorates ammonium toxicity via repressing polyamine oxidase-derived hydrogen peroxide and modulating ammonium transporters in rice root

“…We need to concern the possibility of the long-term usage of thymol in later stages of rice growth. It has been demonstrated that microencapsulation or nanoencapsulation can improve the longterm effectiveness of essential oil (Shah et al 2012;Zhang et al 2020). Therefore, developing microencapsular or nanoencapsular thymol may have great potential to improve the efficiency of thymol in agriculture.…”

Microencapsulation of lime (Citrus aurantifolia) oil for antibacterial finishing of cotton fabric

“…In general, the results were in agreement with major limitations found in the modied fabric, including the fabric immobilized with LO microcapsules. 20 Since the fabric immobilized with LO microcapsules using 4% binder showed relatively better resistance against the washing cycle than other fabrics, further SEM analysis was performed to ascertain the morphology of the washed fabric (Fig. 9).…”

Mikroenkapsulasi Minyak Asiri Jeruk Nipis Dengan Koaservasi Kompleks Yang Beraktivitas Antibakteri Untuk Aplikasi Pada Bahan Tekstil

“…Ketahanan cuci yang buruk merupakan salah satu kekurangan dari modifikasi kain kapas setelah dilakukan treatment. 27 Untuk mengetahui karakter kain tersebut, dilakukan pengujian ketahanan cuci menggunakan instrumen launder-O-meter. Bahan tekstil dapat diukur ketahanan cucinya setara dengan beberapa kali pencucian rumah tangga.…”