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Behavior of inulin, polydextrose, and egg albumin as carriers of Bougainvillea glabra bracts extract: Rheological performance and powder characterization
Journal of Food Processing and Preservation ( IF 2.5 ) Pub Date : 2020-07-24 , DOI: 10.1111/jfpp.14834
Fernanda Kuhn 1 , Eduarda Silva Azevedo 1 , Caciano Pelayo Zapata Noreña 1
Affiliation  

Bougainvillea glabra bracts extract was encapsulated by spray‐drying and freeze‐drying, using polydextrose, inulin, and egg albumin as carrier materials. All dispersions prepared before the drying process exhibited shear‐thinning behavior of pseudoplastic fluids. The spray‐dried powder containing inulin as carrier material showed the lowest hygroscopicity, while the highest solubility values were obtained for all powders containing polydextrose. Polydextrose as carrier material and spray‐drying provided the highest retention of total phenolic compounds (94.92%), while inulin and freeze‐drying showed the highest betalains retention (78.20% for betacyanins and 51.15% for betaxanthins) as well as antioxidant capacity (78.63%). All powders presented thermal stability up to 200°C according to the TGA assays. The FTIR analysis suggested the effective encapsulation of bioactive compounds from B. glabra bracts showing similar bands among the extract and B. glabra powders, with physical interactions between the bioactive compounds from the extract and carrier materials.

中文翻译:

菊粉,聚葡萄糖和卵清蛋白作为九重葛片提取物载体的行为:流变性能和粉末表征

九重葛poly汁提取物通过喷雾干燥和冷冻干燥进行封装,使用聚葡萄糖,菊粉和卵清蛋白作为载体材料。在干燥过程之前制备的所有分散体均表现出假塑性流体的剪切稀化行为。含有菊粉作为载体材料的喷雾干燥粉末显示出最低的吸湿性,而所有含有聚葡萄糖的粉末均获得了最高的溶解度值。聚右旋糖作为载体材料和喷雾干燥法提供了总酚类化合物的最高保留率(94.92%),而菊粉和冷冻干燥法则显示出最高的甜菜碱保留率(甜菜色素为78.20%,虾青素为51.15%)以及抗氧化能力(78.63) %)。根据TGA分析,所有粉末在高达200℃下均表现出热稳定性。B.茯苓苞片表示提取物和间相似频带B.茯苓粉末,与从提取物和载体材料中的生物活性化合物之间的物理相互作用。
更新日期:2020-07-24
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