PDF(Pubmed)
Abstract：
The recovery of byproducts from the food industry is a promising approach to obtain hydrophilic biopolymers with potential health benefits. In this work, the mucilage obtained from the peel of the Opuntia ficus-indica (OFI) fruit was compared with gum arabic (GA) as wall materials for the microencapsulation of Colombian blueberry anthocyanins, using the spray-drying process. For both types of microencapsulates, the following were determined: anthocyanin content (UV-vis and HPLC/MS-MS), total dietary content (enzymatic-gravimetric method), antioxidant activity (ORAC), color (CIELab parameters), morphology (SEM and particle size), and thermal behavior (DSC/TGA). Six different anthocyanins were identified by HPLC/MS-MS in the non-lyophilized Andean blueberry sample (LABP) and in the OFI-mucilage and GA microcapsules. OFI mucilage, compared to GA, favors the formation of larger spherical particles, a smoother surface without cracks, and greater thermal stability. The higher anthocyanin retention capacity in OFI microcapsules leads to higher antioxidant capacity and red coloration for this biomaterial. Consequently, the microencapsulation of anthocyanins with mucilage from the peel of the OFI fruit is proposed as a promising alternative for the protection and incorporation of this natural dye with high antioxidant capacity and dietary fiber content in new functional food/cosmetic formulations, while giving added value to the natural byproducts of OFI.
摘要：
从食品工业中回收副产物是获得具有潜在健康益处的亲水性生物聚合物的有希望的方法。在这项工作中,将从Opuntiaficus-indica（OFI）果实果皮中获得的粘液与阿拉伯树胶（GA）作为用于微囊化哥伦比亚蓝莓花青素的壁材进行了比较，使用喷雾干燥过程。对于这两种类型的微胶囊，测定花青素含量(UV-vis和HPLC/MS-MS),总膳食含量(酶重量法)，抗氧化活性（ORAC），颜色（CIELab参数），形态（SEM和粒径），和热行为（DSC/TGA）。通过HPLC/MS-MS在非冻干的安第斯蓝莓样品（LABP）以及OFI-粘液和GA微胶囊中鉴定了六种不同的花青素。OFI粘液,与GA相比，有利于形成更大的球形颗粒，没有裂缝的光滑表面，和更高的热稳定性。OFI微胶囊中较高的花色苷保留能力导致该生物材料具有较高的抗氧化能力和红色着色。因此,将花色苷与来自OFI水果果皮的粘液一起微囊化，作为一种有希望的替代方案，用于保护和掺入这种具有高抗氧化能力和膳食纤维含量的天然染料在新的功能性食品/化妆品配方中。同时为OFI的天然副产品提供附加值。
