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| Optimization of preparation of green kumquat seed oil microcapsules by spray drying technology |
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| DOI： |
| KeyWord:green kumquat seed oil composite wall material spray drying nanocapsules embedding rate property |
| FundProject: |
| Author Name | Affiliation | | LI Rongli1,2,3，WU Zhechao1,2,3，XIAO Anhong1,2,3，ZHANG Hongjian4,5 | 1.College of Food Science and Engineering, Wuhan Polytechnic University, Wuhan 430023, China
2.Hubei Key Laboratory for Processing and Transformation of Agricultural Product, Wuhan 430023, China
3.Key Laboratory for Deep Processing of Major Grain and Oil, Ministry of Education,Wuhan 430023, China
4.Hainan Institute of Grain and Oil Science，Qionghai 571400,Hainan, China； 5.Hainan Green Kumquat Food Technology Co. ，Ltd. ，Qionghai 571400， Hainan, China |
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| Abstract: |
| In order to effectively retain the nutritional activity components and special flavor substances in green kumquat seed oil, and to facilitate its application in food, spray drying technology was used to prepare green kumquat seed oil microcapsules. Based on the screening of soybean isolate protein and maltodextrin (mass ratio 1∶ 1) as the composite wall material with good embedding effect and emulsion stability, single-factor experiment and orthogonal experiment were used to optimize the preparation process conditions of green kumquat seed oil microcapsules using the embedding rate as the index, and the properties of the microcapsules were characterized. The results showed that the optimal preparation conditions were obtained as follows: mass concentration of aqueous solution of wall material 19.23 g/mL, ratio of core material to wall material 1∶2.5, total amount of emulsifier composed of monoglyceride and sucrose ester with mass ratio of 3∶7 1.00%（based on the mass of emulsion）and spray drying inlet air temperature 180℃. Under the optimal conditions， the embedding rate reached 84.33%. The prepared green kumquat seed oil microcapsules were uniform spherical nanoparticles with smooth surface, compact structure and good embedding effect,and its moisture content was 2.47%, the average particle size was 238.56 nm,the dispersion coefficient was 0.26, the repose angle was 32.81°, and bulk density was 0.33 g/mL. In conclusion, the green kumquat seed oil microcapsules with good encapsulation efficiency and properties can be prepared by spray drying technology. |
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