微囊化已成为增强生物活性化合物的稳定性和保护性的有希望的策略。在这项工作中,使用15%的麦芽糊精和lasiodiplodan(0.5-1.25%)作为壁膜材料将烤茶微囊化。微胶囊的包封效率进行了表征,吸湿性,水分,水活动,水溶性,溶解性,扫描电子显微镜,FT-IR光谱,热分析,比色法,抗氧化活性,以及酚类化合物和咖啡因的定量。微囊包封率从44.92%到56.39%,通过增加拉索二倍体的浓度,包封效率从66.54变化到70.16。FT-IR揭示了酚酸,黄酮类化合物,和多酚。在样品中观察到微小的颜色变化。热分析表明微胶囊表现出良好的热稳定性,低于250°C没有降解。封装样品显示出高水平的生物活性化合物,表明喷雾干燥微囊化是一种有利的工艺,麦芽糊精,一种低成本的保护剂,当与Lasiodiplodan的特性结合时,可以稳定伴侣提取物的一个很好的选择。
Microencapsulation has emerged as a promising strategy to enhance the stability and protection of bioactive compounds. In this work, roasted mate tea was microencapsulated using 15 % maltodextrin and lasiodiplodan (0.5-1.25 %) as wall coating materials. The microcapsules were characterized for encapsulation efficiency, hygroscopicity, moisture, water activity, water solubility, dissolubility, scanning electron microscopy, FT-IR spectroscopy, thermal analysis, colorimetry, antioxidant activity, as well as quantification of phenolic compounds and caffeine. Microencapsulation yields ranged from 44.92 to 56.39 %, and the efficiency of encapsulation varied from 66.54 to 70.16 by increasing the lasiodiplodan concentration. FT-IR revealed phenolic acids, flavonoids, and polyphenolics. Minor color variations were observed among the samples. Thermal analysis demonstrated the microencapsulates exhibited good thermal stability with no degradation below 250 °C. Encapsulated samples showed high levels of bioactive compounds, suggesting that microencapsulation by spray-drying was a favorable process, where maltodextrin, a low-cost protective agent, when combined with the properties of lasiodiplodan, can be a good option for stabilizing mate extracts.