期刊
CARBOHYDRATE POLYMERS
卷 56, 期 1, 页码 41-45出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.carbpol.2003.11.012
关键词
astaxanthin; chitosan; microcapsules; emulsion
Synthetic astaxanthin was microencapsulated in a chitosan matrix cross-linked with glutaraldehyde by using the method of multiple emulsion/solvent evaporation. A powdered product was obtained containing microcapsules with a diameter of 5-50 mum. The stability of the pigment in the microcapsules was studied under storage at 25, 35 and 45 degreesC for 8 weeks by measuring isomerization and loss of concentration of pigment. Pigments were extracted from the microcapsules with a mixture of dichloromethane/methanol (50:50) and the astaxanthin was analyzed by HPLC with a diode array detector (480 nm). Results showed that the microencapsulated pigment did not suffer isomerization nor chemical degradation under the investigated storage conditions. (C) 2003 Elsevier Ltd. All rights reserved.
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