Zabot Giovani L, Silva Eric Keven, Azevedo Viviane M, Meireles M Angela A
LASEFI/DEA/FEA (School of Food Engineering)/UNICAMP (University of Campinas), Rua Monteiro Lobato, 80, Campinas, SP; CEP, 13083-862, Brazil.
LASEFI/DEA/FEA (School of Food Engineering)/UNICAMP (University of Campinas), Rua Monteiro Lobato, 80, Campinas, SP; CEP, 13083-862, Brazil.
Food Res Int. 2016 Jul;85:26-35. doi: 10.1016/j.foodres.2016.04.005. Epub 2016 Apr 14.
The purpose of this work was to replace modified starch (SF) by inulin (IN), a prebiotic carbohydrate, during emulsification assisted by ultrasound. Oregano extract was encapsulated using five proportions of IN and SF as wall materials. The effect of such substitution on the microparticle characteristics was evaluated. Attempting to contribute with the increasing demand for prebiotic consumption, mixing one part of SF with three parts of IN (1:3, mass basis) yielded encapsulation efficiency equal to 66±1% and the largest thymol retention: 84±9%. Besides the entrapment of thymol, high amount of other compounds present in oregano extract could be entrapped in the polymeric matrix: 92±1%. Reduction of the microparticles sizes when increasing the proportion of inulin was also observed. Comprising such results and those presented for powder morphology, surface extract, particle size distribution, X-ray diffraction and thermal stability, the proportion 1:3 (SF:3IN) is a favorable prebiotic encapsulant matrix for encapsulating oregano extract and retaining target bioactive compounds.
这项工作的目的是在超声辅助乳化过程中，用益生元碳水化合物菊粉（IN）替代变性淀粉（SF）。使用五种菊粉与变性淀粉的比例作为壁材对牛至提取物进行包封。评估了这种替代对微粒特性的影响。为了满足对益生元消费日益增长的需求，将一份变性淀粉与三份菊粉（质量比为1:3）混合，得到的包封效率为66±1%，百里香酚保留率最高：84±9%。除了包封百里香酚外，牛至提取物中存在的大量其他化合物也可被包封在聚合物基质中：92±1%。还观察到随着菊粉比例的增加微粒尺寸减小。综合这些结果以及粉末形态、表面提取物、粒度分布、X射线衍射和热稳定性方面的结果，1:3（SF:3IN）的比例是用于包封牛至提取物和保留目标生物活性化合物的良好益生元包封基质。
