Occupational Health Research Center, Iran National Standards Organization (INSO), Tabriz, Iran.
Department of Food Science and Technology, Faculty of Agricultural Sciences, University of Guilan, Rasht, Iran.
Int J Biol Macromol. 2023 Aug 1;245:125548. doi: 10.1016/j.ijbiomac.2023.125548. Epub 2023 Jun 23.
Ginkgo biloba extract (GBLE) contains many bioactives including flavonoids and terpene trilactones that play some pharmacological roles. These compounds are sensitive to operating conditions; so, encapsulation is a suitable approach to protect them. In this study, different carriers including maltodextrin (MD), and its combination with gum-Arabic (MD-GA), whey protein concentrate (MD-WPC), and whey-protein hydrolysate (MD-HWPC) were used to encapsulate GBLE. Powder production yield, physicochemical/functional characteristics, physical stability and flowability of particles were affected by the type and composition of carriers. FTIR results indicated the placement of phenolic compounds in the carrier matrix. The SEM images also showed the morphological changes of particles (especially the size, indentation and surface shrinkage) under the influence of various carriers. Microencapsulated powders formulated using MD-HWPC showed the highest values of TPC, DPPH, and ABTS and a lighter color which determined the suitability of this wall material (due to the improvement of surface activity and emulsifying properties of protein as a result of partial enzymatic hydrolysis) to protect the antioxidant properties of GBLE during spray-drying, improving the production yield and preserving physical and functional characteristics of the encapsulated powders.
银杏叶提取物 (GBLE) 含有许多生物活性物质，包括类黄酮和三萜内酯，它们发挥着一些药理作用。这些化合物对操作条件敏感；因此，封装是一种保护它们的合适方法。在这项研究中，使用了麦芽糊精 (MD) 及其与阿拉伯胶的组合 (MD-GA)、乳清蛋白浓缩物 (MD-WPC) 和乳清蛋白水解物 (MD-HWPC) 等不同的载体来封装 GBLE。粉末生产产率、物理化学/功能特性、颗粒的物理稳定性和流动性受到载体类型和组成的影响。傅里叶变换红外光谱 (FTIR) 结果表明酚类化合物在载体基质中的位置。扫描电子显微镜 (SEM) 图像也显示了各种载体影响下颗粒的形态变化（特别是尺寸、压痕和表面收缩）。使用 MD-HWPC 配制的微胶囊粉末显示出最高的 TPC、DPPH 和 ABTS 值和更浅的颜色，这确定了这种壁材料（由于部分酶解导致蛋白质表面活性和乳化性能的提高）在喷雾干燥过程中保护 GBLE 的抗氧化性能的适宜性，提高了生产产率并保持了封装粉末的物理和功能特性。
