Using beta-cyclodextrin and Arabic gum as wall materials for encapsulation of saffron essential oil

ABSTRACT

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 [0100, 2575, 5050, 7525, and 1000] of beta-cyclodextrin [beta-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 beta-CD/GA at a 7525 ratio. In contrast, the lowest encapsulate hygroscopicity [EH] and RE were observed when only beta-CD was applied as wall material [Pdifferential scanning calorimetry [DSC] thermograms of the control and encapsulate of beta-CD/GA [7525] 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 beta-CD/GA at a 7525 ratio can be recommended for saffron essential oil encapsulation