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Preparation and characteristics of sea-buckthorn seed oil microcapsule |
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DOI:10.12166/j.zgyz.1003-7969/2020.01.004 |
KeyWord:sea-buckthorn seed oil microcapsule compound wall materials thermal stability oxidative stability fatty acid composition |
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Abstract: |
Preparation of sea-buckthorn seed oil microcapsule based on compound wall materials was studied. With embedding rate as index, the preparation conditions were optimized by orthogonal experiment based on single factor experiment. The characteristics of microcapsule and the effects of microencapsulation on the properties of sea-buckthorn seed oil were studied. The results showed that the optimal preparation conditions were obtained as follows: sodium caseinate and maltodextrin used as wall materials, mass ratio of sodium caseinate to maltodextrin 1∶ 1, mass ratio of wall material to core material 2∶ 1, solid content 20%. Under the optimal conditions, the embedding rate reached 96.15%, and the microcapsule had uniform particle size distribution. Thermogravimetric analysis revealed that sea-buckthorn seed oil microcapsule had good thermal stability. Before and after microencapsulation of sea-buckthorn seed oil, the content of unsaturated fatty acids changed little. Compared with the unembedded sea-buckthorn seed oil, the microencapsulated sea-buckthorn seed oil had significantly prolonged oxidation induction time during high-temperature accelerated storage and had good oxidative stability. |
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