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Preparation and properties of Antarctic krill oil microcapsulated powder |
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DOI: |
KeyWord:Antarctic krill oil microcapsulated powder wall material embedding rate surface oil |
FundProject:国家重点研发计划(2018YFC1406805) |
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Abstract: |
In order to expand the application of Antarctic krill oil, Antarctic krill oil microencapsulated powder was prepared by spray drying method. The best wall materials, emulsifier and process conditions were determined by comparing the microencapsulation effect. In addition, the performance indexes of the final product were measured. The results showed that the optimal preparation conditions of Antarctic krill oil microencapsulated powder were obtained as follows: maltodextrin (75%) and sodium caseinate (2%) used as the best wall materials combination, monoglyceride used as the best emulsifier, dosage of emulsifier 2.0%, homogenization pressure 40 MPa, inlet air temperature of spray drier 180 ℃, and outlet air temperature 90 ℃. Under the optimal conditions, the surface oil content of the Antarctic krill oil microencapsulated powder obtained was 0.68%, the embedding rate was over 95% and the oil loading capacity was about 20%. The microencapsulated powder was light red, with a certain smell of krill oil, good flowability, no agglomeration, and could be dissolved quickly after rehydration, without any delamination or oil bleaching phenomenon. |
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