Department of Chemical and Biochemical Engineering, Zhejiang University, Hangzhou 310027, China;
Xinchang Pharma. Factory, Zhejiang Medical Co. Ltd., Xinchang 312500, China;
Department of Chemical and Biochemical Engineering, Zhejiang University, Hangzhou 310027, China;
Department of Chemical and Biochemical Engineering, Zhejiang University, Hangzhou 310027, China;
Xinchang Pharma. Factory, Zhejiang Medical Co. Ltd., Xinchang 312500, China;
β-carotene; microcapsule powders; flowability; Hausner ratio; repose angle;