Willow gentian as a source of bitter compounds is traditionally used for digestive disorders. Gentiana root extract was spray dried using five different carriers (maltodextrin, whey protein, pectin, starch, gelatine) at various concentrations. Powders were characterized in terms of physical properties and encapsulation efficiency of bioactive compounds. The moisture content of all powders was between 1.78 and 3.46 %, and bulk density from 0.23 to 0.32 g/mL. Powders produced with maltodextrin and whey protein provided the highest yield (around 75 and 70 %, respectively) and the lowest hygroscopicity (6 and 7%, respectively). Gelatin and pectin provided powders with the highest encapsulation efficiency of total phenolic as well as the individual compounds. The stability of encapsulated bioactive compounds was studied after 6 months, and the most stable in all samples were gentiopicrin and sweroside with their content decreased by 10 % only. This study has shown that spray drying of gentian root extract produces powders with good physical properties and encapsulation of bioactives.

柳树龙胆作为苦味化合物的来源传统上用于治疗消化系统疾病。龙胆使用不同浓度的五种不同载体（麦芽糊精、乳清蛋白、果胶、淀粉、明胶）喷雾干燥根提取物。根据生物活性化合物的物理性质和包封效率对粉末进行表征。所有粉末的水分含量介于 1.78 至 3.46 % 之间，堆积密度介于 0.23 至 0.32 克/毫升之间。用麦芽糊精和乳清蛋白生产的粉末产量最高（分别约为 75% 和 70%），吸湿性最低（分别为 6% 和 7%）。明胶和果胶提供的粉末具有最高的总酚类化合物和单个化合物的包封效率。6 个月后对包封的生物活性化合物的稳定性进行了研究，所有样品中最稳定的是龙胆苦苷和苦参苷，它们的含量仅下降了 10%。