Preparation of Microencapsulated β-Carotene Powder for Using in Aqueous Media

Hejri, A.; Khosravi, A.; Gharanjig, K.; Hejazi, M.

Preparation of Microencapsulated β-Carotene Powder for Using in Aqueous Media

Authors

¹ Department of Polymer Engineering and Color Technology, Amirkabir University of Technology

² Department of Polymer Engineering and Color Technology, Amirkabir University of technology

³ Department of Organic Colorants;Center of Excellence for Color science and Technology, Institute for Color Science and Technology

⁴ Department of Food Technology, Branch of Northwest and West Region Agricultural Biotechnology Research Institute of Iran

Abstract

In this research, microencapsulated β-carotene powder has been prepared by gelatin using spray drying method. Ability of gelatin for encapsulating of β-carotene was examined. Suitability of β-carotene powder was investigated for using in aqueous media. Prepared emulsion had the average particle size of 2.83 microns caused stability of emulsion. Microencapsulated β-carotene particles had spherical shape with smooth and some dented surfaces. Microencapsulated β-carotene powder had high β-carotene content which is suitable for food industry. Microencapsulation efficiency was 42.7% which was increased up to 50.8% by increment of the gelatin concentration. The cold water solubility of the microencapsulated powder was 73% and the powder was stable in water and did not show phase separation after 14 days.

Keywords