锦绣杜鹃花色苷微胶囊的制备及其稳定性研究  

Preparation of Rhododendron×pulchrum Sweet Flowers Anthocyanins Microcapsule and Its Stability

作　　者：张梅[1] 张燕杰 陈为健 井华芳 娄本勇[1] ZHANG Mei;ZHANG Yanjie;CHEN Weijian;JING Huafang;LOU Benyong(College of Materials and Chemical Engineering,Research and Testing Center of Pharmaceutical Formulations,Minjiang University,Fuzhou 350108,China)

机构地区：[1]闽江学院材料与化工学院,药物制剂研究与测试中心,福建福州350108

出　　处：《林产化学与工业》2023年第2期19-26,共8页Chemistry and Industry of Forest Products

基　　金：福建省自然科学基金项目(2018J01434);福州市科技局计划项目(2020-GX-6)。

摘　　要：为提高花色苷的稳定性,拓宽其在功能性产品上的应用,以阿拉伯胶和乳清蛋白为壁材,杜鹃花色苷为芯材,采用响应面法优化锦绣杜鹃花色苷微胶囊的制备工艺,同时运用扫描电子显微镜(SEM),傅里叶红外光谱(FT-IR)仪和热重(TG)分析仪等对花色苷微胶囊进行表征分析。研究结果表明:喷雾干燥法制备锦绣杜鹃花色苷微胶囊的最佳工艺条件为壁芯比4∶1(g/g),进风口温度165℃,进料流量500 mL/h,此条件下,花色苷微胶囊包埋率为(89.28±1.05)%。SEM显示花色苷微胶囊呈较均匀的球状颗粒,粒径为4.0μm,结构紧密,无裂痕,不易黏连。FT-IR分析表明杜鹃花色苷包埋在阿拉伯胶和乳清蛋白形成的薄膜中。TG分析表明花色苷在197.7℃,质量明显下降,而花色苷微胶囊在237.5℃才有明显质量损失。储存稳定性分析表明受光照、温度的影响,杜鹃花色苷微胶囊保留率明显比未包埋的花色苷高。In order to improve the stability of anthocyanins and broaden their application in functional products,the preparation process of Rhododendron pulchrum flowers anthocyanin microcapsules was optimized by response surface methodology,which was made using gum acacia and whey protein as wall materials and anthocyanin as core material.The anthocyanin microcapsules were characterized by scanning electron microscope(SEM),Fourier infrared spectroscopy(FT-IR)and thermogravimetry(TG).The results showed that the optimal microencapsulation conditions for the preparation of anthocyanin microcapsules by spray drying were as follows:wall-core ratio of 4∶1,inlet air temperature of 165℃,and feed flow of 500 mL/h.Under these conditions,the embedding rate of anthocyanin microcapsules was(89.28±1.05)%.SEM showed that anthocyanin microcapsules were uniform spherical particles with a diameter of about 4.0μm,compact structure,no cracks and non-sticking.FT-IR analysis showed that R.pulchium anthocyanins was embedded in the film formed by gum acacia and whey protein.TG analysis showed that the quality of anthocyanins decreased significantly at 197.7℃.Comparatively,the significant mass loss of anthocyanin microcapsules could be found only at 237.5℃.The storage stability analysis showed that the retention rate of R.pulchium flowers anthocyanin microcapsules was significantly higher than that of unembedded anthocyanins owing to the influence of light and temperature.

关 键 词：锦绣杜鹃 花色苷 微胶囊 响应面法 稳定性 

分 类 号：TQ35[化学工程] TQ91