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Citation: KANG Hong-Kuan, ZHOU Xiao-Hua, ZHAO Hong-Bo, LI Xiao-Hui, FENG Tao, ZHOU Xing. Extraction of Phytic Acid from the Detoxified Liquor of Rapeseed Meal Using Trialkylamine-n-Octanol/sulfonated Kerosene[J]. Chinese Journal of Applied Chemistry, ;2010, 27(11): 1344-1350. doi: 10.3724/SP.J.1095.2010.00007 shu

Extraction of Phytic Acid from the Detoxified Liquor of Rapeseed Meal Using Trialkylamine-n-Octanol/sulfonated Kerosene

College of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400030

Received Date: 4 January 2010
Revised Date: 22 March 2010

Phytic acid was extracted from the waste detoxified liquor of rapeseed meal using trialkylamine(N235)-n-octanol/sulfonated kerosene. The effects of pH and the concentrations of phytic acid and N235 on partition coefficient were studied. The optimal conditions of extraction are as follows:the pH value is 3.0,the concentration of N235 is 0.17 mol/L,the concentration of n-octanol is 0.48 mol/L,the phase ratio is 5:1 and the extraction time is 5 min. Under the optimal operating conditions and at a concentration of 0.02 mol/L of phytic acid in the pre-extraction solution,the single extraction efficiency was 95.2%. The conditions of back extraction are as follows:the concentration of NaOH solution is 0.25 mol/L,the phase ratio is 5:2 and the back extraction time is 5 min. The overall yield was 82.6% after a three-stage back-extraction treatment. The results indicate that n-octanol could enhance the extraction ratio of phytic acid,which is probably caused by the N235-n-octanol molecular cluster.
- phytic acid,
- extraction,
- N235,
- rapeseed meal,
- n-octanol
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