Optimization of Technology for Microencapsulation of Methionine by Spray-drying

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Optimization of Technology for Microencapsulation of Methionine by Spray-drying
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In order to prepare microencapsulation methionine,which could be absorbed and utilized in shrimp feeds,the wall materials and the technology of embedding by spray-drying were studied in this manuscript.The method was confirmed,which used the alginate and gelatin as wall materials,the methionine powder as core material and spray drying technology.Results showed that the best parameters of the embedding of the microcapsule were that the 1% alginate and 1% gelatin,the methionine powder was 15%,the feed temperature was 65 ℃,the air inlet temperature was 195 ℃ and theair outlet temperature was 80 ℃,the feed speed was 45 mL/min,and the embedding rate reached to 89.6%.Scanning Electron Microscopy(SEM) has been applied to the study on the surface superstructure of microencapsulated methionine,which was of regulation and uniformity,not conglutination.

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NIU Hua-xin, GUO Shi-dong, XIE Zhong-guo, ZHU Ai-xia. Optimization of Technology for Microencapsulation of Methionine by Spray-drying[J]. Journal of Food Science and Biotechnology,2010,29(5):681-686.

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Online: June 17,2014
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