采用喷雾干燥工艺，使用淀粉类衍生物(α-环糊精，辛烯基琥珀酸酯化淀粉Hi-cap和辛烯基琥珀酸淀粉纳Capsul)替代部分麦芽糊精，制备红曲色素微胶囊。通过粉体特性测试仪、激光粒度分布仪、扫描电镜、紫外-可见分光光度计等，针对综合特性指标(差角、喷流性指数)、粒径分布、微观结构、溶解性及色价等指标进行分析，结果表明，淀粉类衍生物可减小红曲色素粉体差角，α-环糊精在一定程度上有效增大色素颗粒直径，可显著减少红曲色素喷雾干燥中的扬尘；与对照组相比，加入淀粉类衍生物后样品更圆滑与饱满。淀粉类衍生物红曲色素粉体电镜照片中，样品碎片数量明显减少，说明淀粉类衍生物在一定程度上能够起到保护红曲色素粉体样品的作用，使喷雾干燥工艺制备微胶囊更加完整，减少微胶囊的破裂。Capsul与Hi-cap可增大红曲色素溶解度；淀粉类衍生物均提高红曲色素的色价。

Using the spray drying technique, starch derivatives (α-cyclodextrin, Octyl succinic acid esterifying starch Hi-cap and Octenyl succinate starch Capsul) were used to replace some maltodextrin in preparing Monascus pigment microcapsules. Powder characteristics tester, laser particle size distribution, scanning electron microscopy (SEM) and UV-vis spectrophotometer were used to measure the comprehensive characteristic indexes (differential angle and jet stream index), particle size distribution, microstructure and solubility. The results showed that α-cyclodextrin effectively increased Monascus pigment particle diameter and could significantly reduce the dust of Monascus pigment during spray drying. Compared with the control group, the samples were much smoother. SEM results showed that starch derivatives reduced broken pieces of the pigments significantly, which indicated that starch derivatives can protect the Monascus pigment powder to a certain degree, and reduce the broken rate of microcapsules. Both "Capsul" and "Hi-cap" increased the solubility of Monascus pigment. The starch derivatives could improve the color value. The study laid the theoretical foundation for developing Monascus pigment powder products.