Abstract

Dried moringa (Moringa oleifera) extract was obtained by solid–liquid extraction from moringa fresh leaves with an ethanolic solution (80%) followed by closed-loop spray drying with N₂. This approach avoided the risk of explosion and environmental pollution upon drying. Spray drying was carried out with different inlet-outlet temperatures. Maltodextrin DE-10, β-cyclodextrin and precipitated silica were used as carrier materials. The highest statistically validated (p < 0.05) retentions (93% total phenolics and 48% ascorbic acid, 71% DPPH and 92% ABTS) were obtained with maltodextrin DE-10. The highest retentions of total carotenoids (72%) were obtained with precipitated silica.

摘要

干燥的辣木 ( Moringa oleifera ) 提取物是通过用乙醇溶液 (80%) 从辣木新鲜叶子中进行固液萃取，然后用 N ₂进行闭环喷雾干燥而获得的。这种方法避免了干燥时发生爆炸和环境污染的风险。喷雾干燥在不同的进出口温度下进行。麦芽糖糊精DE-10、β-环糊精和沉淀二氧化硅用作载体材料。 使用麦芽糖糊精 DE-10 获得经统计学验证的最高 ( p < 0.05) 保留率（93% 总酚类物质和 48% 抗坏血酸、71% DPPH 和 92% ABTS）。使用沉淀二氧化硅可获得最高的总类胡萝卜素保留率 (72%)。