Atefi Mohsen, Nayebzadeh Kooshan, Mohammadi Abdorreza, Mortazavian Amir Mohammad
Department of Food Science and Technology, National Nutrition and Food Technology Research Institute, Faculty of Nutrition Sciences and Food Technology, Shahid Beheshti University of Medical Sciences, P.O. Box 19395-4741, Tehran, Iran.
Iran J Pharm Res. 2017 Winter;16(1):93-102.
Saffron essential oil has a pleasant aroma and medicinal activities. However, it is sensible into the environmental condition. Therefore, it should be protected against unwanted changes during storage or processing. Encapsulation is introduced as a process by which liable materials are protected from unwanted changes. In the present study, different ratios (0:100, 25:75, 50:50, 75:25, and 100:0) of ß-cyclodextrin (ß-CD) and arabic gum (GA) were used as wall martial for encapsulation saffron essential oil. In order to calculate of loading capacity (LC) and encapsulation efficiency (EE), and release (RE), safranal was determined as indicator of saffron essential oil using GC. According to the results, the highest LC and EE were related to the mixture of ß-CD/GA at a 75:25 ratio. In contrast, the lowest encapsulate hygroscopicity (EH) and RE were observed when only ß-CD was applied as wall material (P≤0.05). Comparing the differential scanning calorimetry (DSC) thermograms of the control and encapsulate of ß-CD/GA (75:25) confirmed encapsulation of saffron essential oil. Scanning electron microscopy (SEM) images with high magnifications showed the rhombic structure that partially coated by GA. The mixture of ß-CD/GA at a 75:25 ratio can be recommended for saffron essential oil encapsulation.
藏红花精油具有宜人的香气和药用活性。然而，它对环境条件敏感。因此，在储存或加工过程中应防止其发生不必要的变化。包封被引入作为一种保护易损材料免受不必要变化影响的过程。在本研究中，使用不同比例（0:100、25:75、50:50、75:25和100:0）的β-环糊精（β-CD）和阿拉伯胶（GA）作为包封藏红花精油的壁材。为了计算负载量（LC）、包封效率（EE）和释放率（RE），使用气相色谱法将西红花醛作为藏红花精油的指标进行测定。结果表明，最高的LC和EE与75:25比例的β-CD/GA混合物相关。相反，当仅使用β-CD作为壁材时，观察到最低的包封吸湿性（EH）和RE（P≤0.05）。比较对照和β-CD/GA（75:25）包封物的差示扫描量热法（DSC）热谱图证实了藏红花精油的包封。高倍扫描电子显微镜（SEM）图像显示了部分被GA覆盖的菱形结构。75:25比例的β-CD/GA混合物可推荐用于藏红花精油的包封。
