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食品接触材料中有毒物质的迁移研究

The migration of harmful substances from food contact materials to food. 食品接触材料中有毒物质的迁移研究. 郝 倩 化学工程 2012.11.09. Contents. Experiments. 1. Structure of the review. 2. Prospects. 3. The improve of experiences. Equipment improve. The improve of experiences.

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食品接触材料中有毒物质的迁移研究

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  1. The migration of harmful substances from food contact materials to food 食品接触材料中有毒物质的迁移研究 郝 倩 化学工程 2012.11.09

  2. Contents Experiments 1 Structure of the review 2 Prospects 3

  3. The improve of experiences Equipment improve

  4. The improve of experiences Advantages: 1.Good repeatability 2.Amount of sample is small 3.Error less The volume of food simulate:8mL The area of plastic :20cm2 the volume-to –surface area ideally should be between 1.55 and 0.31mL/cm2

  5. Literature reading report

  6. Literature reading report Fick’s second law parameters： diffusion coefficient Dpand partition coefficientKP,F Brandschmodel Limm and Hollifieldmodel

  7. Literature reading report When reach to equilibrium Limited packaging-infinite food simulates when

  8. Literature reading report infinite packaging-infinite food simulates limited packaging-infinite food simulates In this paper ,apply three equation:

  9. Literature reading report Counting process 1.Draw up the experimental data of migration, as follows： 2.Use extraction method to get the value of MP,0 SPE(solid phase extraction)/ASE(accelerated solvent extraction) MAE(microwave extraction)/ultrasonic extraction/SFE（supercritical fluid extraction） The paper use the mechanical shaking and centrifuging.

  10. Literature reading report 3.Calculate the α and KP,F(VF,VP is known) The average values of AP‘ and AP* 4.Calculate diffusion coefficient This empirical equation is applied to Mr≤4000

  11. Literature reading report 5.The diffusion coefficient is dependent of the temperature following an Arrhenius-type relationship

  12. Literature reading report Conclusion: 1. Fitted well to the experimental data of the migration into Tenax Fitted to rice 2.The diffusivity values found in Tenax experiment are several orders of magnitude higher than in rice 3.The values of empirical equation is higher than the experimental data

  13. New method to detect the object

  14. New method to detect the object

  15. Prospects Use LC-MS to detect the BPA Use GC-MS to detect plasticizer (DEHP/DBP/DIBP) Use electrochemistry to detect BPA

  16. Thank You !

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