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Starch-protein separation of pea slurry at pH of 9 using a Hydrocyclone
ZHU Jianwei 1,HUA Yufei 2 *,KONG Xiangzhen 2,LI Xingfei 2,ZHANG Caimeng 2,CHENG Yeming 2
1.School of Food Science and Technology, Jiangnan University,Wuxi, 214122;School of Food Science and Technology, Jiangnan University,Wuxi, 214122;School of Food Science and Technology, Jiangnan University,Wuxi, 214122;School of Food Science and Technology, Jiangnan University,Wuxi, 214122;School of Food Science and Technology, Jiangnan University,Wuxi, 214122;School of Food Science and Technology, Jiangnan University,Wuxi, 214122
2.School of Food Science and Technology, Jiangnan University,Wuxi, 214122
*Correspondence author
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Funding: none
Opened online: 8 March 2019
Accepted by: none
Citation: ZHU Jianwei,HUA Yufei,KONG Xiangzhen.Starch-protein separation of pea slurry at pH of 9 using a Hydrocyclone[OL]. [ 8 March 2019] http://en.paper.edu.cn/en_releasepaper/content/4747525
 
 
A 10mm hydrocyclone as a separation method replaced the static settling method to separate the slurry mainly containing 8% water-insoluble substance (starch was the main ingredient) and 3% water-soluble substance (protein was the main ingredient) obtained soaking and grinding dried peas at pH 9. The single-stage hydrocyclone device was capable of enrich protein and starch in different outlet. The overflow separation efficiency of soluble substance can reach 78.31-73.92% and the underflow separation efficiency of insoluble substance can reach 58.71-68.72% at the spilt ratio 0.25-0.32 and above 0.4MPa inletflow pressure. The separation efficiency is improved by increasing the series of cyclone. The overflow and underflow separated again and reflux setting Improved product recovery. Using the three-stage hydrocyclone device, the purity of the final overflow protein product was up to 85% obtained by acid precipitation at pH 4.5 and centrifugation at 7000×g 10min. The protein recovery rate can reach 93%. The starch purity could reach more than 95%.
Keywords:Hydrocyclone; liquid cyclone separation; pea slurry; Pea protein
 
 
 

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