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| Optimization of preparation of defatted walnut protein powder and its amino acid composition |
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| DOI： |
| KeyWord:defatted walnut protein powder walnut kernel walnut cake amino acid composition |
| FundProject: |
| Author Name | Affiliation | | GAO Pan1,2,3, HU Bo1, WANG Shu3,4,YANG Xinmeng1, HU Chuanrong1,HE Dongping1,3, ZHANG Hui5,6, ZHANG Yuejin6, WANG Xingguo1,5,6 | 1.College of Food Science and Engineering, Wuhan Polytechnic University, Wuhan 430023，China
2.Key Laboratory of Bulk Grain and Oil Intensive Processing, Ministry of Education, Wuhan 430023, China
3.Key Laboratory of Edible Oil Quality and Safety for State Market Regulation, Wuhan 430012,China
4.Wuhan Institute for Food and Cosmetic Control, Wuhan 430012, China
5.School of Food Science and Technology, Jiangnan University, Wuxi 214122, Jiangsu, China
6.Yunnan MORRE GARDEN Biotechnology Development Co. , Ltd. , Chuxiong 675000, Yunnan, China |
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| Abstract: |
| In order to obtain the optimal material for preparing defatted walnut protein powder,the defatted walnut protein powder was prepared using walnut kernel and walnut cake as raw materials. The preparation process of defatted walnut protein powder was optimized by orthogonal experiment, and the amino acid composition of defatted walnut protein powder was determined. The results showed that the optimal preparation conditions were obtained as follows: with walnut kernel as a raw material, solid-liquid ratio 1∶20, ultrasonic power 400 W, ultrasonic time 90 min and extraction times twice. Under the optimal conditions, the defatting rate was 99.38% and the PDI of defatted walnut protein powder was 14.88%. Compared with the intake amino acid composition recommended by FAO/WHO, the defatted walnut protein powder could basically meet the needs of adults and partially meet the needs of children aged 2-5. Using walnut kernel as a raw material, defatted walnut protein powder with high defatting rate and PDI can be obtained,and the defatted walnut protein powder is a vegetable protein source with high nutritional value. |
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