Yosha Ido, Shani Arnon, Magdassi Shlomo
Department of Chemistry, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel.
J Agric Food Chem. 2008 Sep 10;56(17):8045-9. doi: 10.1021/jf800772g. Epub 2008 Aug 9.
Alginate-gelatin beads with dispersed droplets of a model pheromone, dodecyl acetate, were prepared as a vehicle for slow release of pheromones into the atmosphere over a prolonged period of time. The beads are prepared in two steps, the first being preparation of an oil-in-water emulsion composed of dodecyl acetate as the oil phase and gelatin as the emulsifier, which provides steric stabilization. After mixing with alginate solution, this emulsion is embedded within beads by simple electrostatic cross-linking. It was found that bead porosity at micrometric and nanometric scales plays an important role in controlling the release of dodecyl acetate.
制备了含有模型信息素乙酸十二酯分散液滴的藻酸盐 - 明胶珠，作为在较长时间内将信息素缓慢释放到大气中的载体。珠子分两步制备，第一步是制备水包油乳液，该乳液由乙酸十二酯作为油相和明胶作为乳化剂组成，明胶提供空间稳定作用。与藻酸盐溶液混合后，通过简单的静电交联将该乳液包埋在珠子中。研究发现，微米级和纳米级的珠子孔隙率在控制乙酸十二酯的释放中起着重要作用。
