Objective:To raise the stability of β-carotene with preparation of microcapsules. Methods:β-carotene microcapsules were prepared with phase separation coacervation. The stability of light exposure of β-carotene and it's microcapsules were investigated with illumination test. Results:The half life was only 0.82 day on exposure to light of β-carotene in solution and one month if protected from light at room temperature. The half lives of raw material and β-carotene microcapsules by illumination test were 6.9 and 24.8 days respectively. Conclusion:The stability of exposure to light of β-carotene can be raised by drug microcapsulation.
胡富强, 周美华, 陈志群. β-胡萝卜素微囊的制备[J]. 浙江大学学报（医学版）, 1999, 28(1): 19-21.
Hu Fuqiang, Zhou Meihua, Chen Zhiqun. Preparation of β-Carotene Microcapsules. Journal of ZheJiang University(Medical Science), 1999, 28(1): 19-21.