MICROENCAPSULATION OF GAC OIL IN CHITOSAN BEAD
Keywords:Gac oil, beta-carotene, encapsulation, chitosan bead, dripping method.
Gac oil is a Vietnamese traditional product that contains a high concentration of interesting
carotenoids (beta-carotene and lycopene), which are very useful in cancer treatment and antiaged
protection due to their strong antioxidant activity. However, its hydrophobicity restrains its
uses in food applications which are normally aqueous systems. This problem is possibly
overcome with the help of microencapsulation technology. In this paper, Gac oil was
encapsulated in chitosan beads using dripping method. Gac oil emulsified in chitosan 2 % was
dropped into alkaline solution. The bead’s formation was evaluated through the decrease of bead
weight and pH of alkaline solution. Chitosan beads expressed a good protection to Gac oil with a
calculated haft-time life of beta-carotene up to 2 years. Encapsulation yield and encapsulation
efficiency were also determined.
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