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| Optimization of removal of plasticizers from walnut oil by molecular distillation |
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| DOI： |
| KeyWord:walnut oil molecular distillation plasticizers DEHP DBP |
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| Author Name | Affiliation | | LI Changfeng1, RAN Chunxia1, TAN Siyuan2 , TAN Xiaorong1 | 1.Department of Public Health and Management, Chongqing Three Gorges Medical College, Wanzhou 404120, Chongqing, China
2.School of Biomedicine and Food Engineering,
Shangluo University, Shangluo 726000, Shaanxi, China |
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| Abstract: |
| In order to explore the reasonable process for removing plasticizers from walnut oil by molecular distillation, the effects of distillation temperature, feed rate and scraper speed on the removal of plasticizers DEHP and DBP from walnut oil were studied by single factor experiment. Then with the contents of DEHP and DBP as indexes, the process conditions of molecular distillation to remove plasticizers from walnut oil were optimized using response surface methodology. The results showed that the optimal process conditions for the removal of plasticizers from walnut oil by molecular distillation were obtained as follows: distillation temperature 150?℃, feed rate 250 mL/h, and scraper speed 260 r/min. Under these conditions, the contents of DEHP and DBP were 0.56, 0.05 mg/kg,respectively, in accordance of the limitation requirements of food in China (DEHP≤1.5 mg/kg, DBP≤0.3 mg/kg). |
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