喷雾干燥法制备蜂巢多酚微胶囊的研究
Study on processing of honeycomb polyphenol microencapsulation by spray-drying method
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摘要: 以蜂巢多酚的微胶囊化效率为考察指标,对蜂胶提取物进行微胶囊化处理,探讨喷雾干燥法制备蜂胶提取物微胶囊的工艺。结果表明:在麦芽糊精添加量70%、阿拉伯胶添加量4%、进风温度180℃、蠕动泵进料量30%的条件下,微胶囊包埋率最高,达到46.6%;经电子扫描电镜观察微结构分析,微胶囊粒子呈球形,外表光滑无裂痕,微胶囊包埋效果较好;经差示扫描量热仪(DSC)扫描表明:麦芽糊精和阿拉伯胶有助于提高玻璃化转变温度,使其从59.6℃到86℃,提高了微胶囊的热稳定性。Abstract: Spray- drying was employed for microencapsulation of honeycomb extract in this study and the microencapsulation coefficient of honeycomb polyphenol acted as a main inspect index.The result shows that: The embedding rate of microcapsule reaches the highest value of 46.6% at the condition of additives maltodextrin70%, arabic gum 4%, the inlet air temperature 180℃ and peristaltic pump feeding quantity 30%.Scanning electron microscope ( SEM) was applied to analyze the microstructure of microencapsulation, the microcapsule particles are spherical with smooth surface and no cracks which demonstrate its good embedding effect.The differential scanning calorimeter ( DSC) indicates that, maltodextrin and Arabic gum could contribute greatly on rising the glass transition temperature, from 59.6℃ to 86℃, improving the thermal stability of the microcapsule.