1 Department of Food Science and Nutrition, Faculty of Science and Technology, Prince of Songkla University, Mueang, Thailand.
2 Department of Science Laboratory Technology, School of Applied Science, Delta State Polytechnic Ogwashi-Uku, Delta State, Nigeria.
Food Sci Technol Int. 2019 Sep;25(6):533-543. doi: 10.1177/1082013219842469. Epub 2019 Apr 23.
, often referred to as 'miracle tree' contains high amount of bioactive nutrients and dietary antioxidants, which help in ameliorating oxidative stress and degenerating diseases. However, the bioactive compounds are highly susceptible to degradation, and this may decrease the antioxidants activity present in To prevent these limitations, the utilisation of microencapsulation technique is of necessity. This study investigated the effect of two vegetable proteins: soy protein isolate and pea protein isolate as wall materials for leaf extracts encapsulation by spray drying technique. Three inlet air temperatures (140, 160, and 180 ℃) and two different formulations of core:wall material ratios (1:4 and 1:9, w/w) were studied. The total phenolic contents, antioxidant activity, microencapsulation yield, morphology, colour, tapped and bulk densities, particle size, and storage stability of microcapsules were analysed. Moringa microencapsulates with pea protein isolate had better powder quality than Moringa microencapsulates with soy protein isolate considering its significant higher particle size, bulk and tapped densities. Moringa microencapsulates with soy protein isolate proved to be a better carrier of bioactive compounds of both total phenolic content and 2,2-diphenyl-1-picrylhydrazyl activity at inlet air temperature in the range of 140-180 ℃. The total phenolic content and 2,2-diphenyl-1-picrylhydrazyl activity tend to be the most stable compound. The storage stability of bioactive compounds of both Moringa microencapsulates with pea protein isolate and Moringa microencapsulates with soy protein isolate was better preserved at 4 ℃ compared to that of 25 ℃.
，通常被称为“奇迹树”，含有大量的生物活性营养物质和膳食抗氧化剂，有助于改善氧化应激和退行性疾病。然而，生物活性化合物非常容易降解，这可能会降低 中存在的抗氧化剂活性。为了防止这些限制，有必要使用微胶囊化技术。本研究采用喷雾干燥技术，研究了两种植物蛋白：大豆分离蛋白和豌豆分离蛋白作为 叶提取物包埋的壁材。研究了三种进口空气温度（140、160 和 180℃）和两种不同的芯壁材料比（1:4 和 1:9，w/w）。分析了 微胶囊的总酚含量、抗氧化活性、微胶囊化产率、形态、颜色、堆积密度、 tapped 密度、粒径和储存稳定性。考虑到其显著较高的粒径、堆积密度和 tapped 密度，与用大豆分离蛋白制备的 微胶囊相比，用豌豆分离蛋白制备的 微胶囊具有更好的粉末质量。对于总酚含量和 2,2-二苯基-1-苦基肼活性，在 140-180℃的进口空气温度范围内，用大豆分离蛋白制备的 微胶囊被证明是生物活性化合物的更好载体。总酚含量和 2,2-二苯基-1-苦基肼活性趋于最稳定的化合物。与 25℃相比，用豌豆分离蛋白和大豆分离蛋白制备的 微胶囊中生物活性化合物的储存稳定性在 4℃下更好地保存。
