How oil cleaning steps make toxic stuff in palm oil
New Insights on Degumming and Bleaching Process Parameters on The Formation of 3-Monochloropropane-1,2-Diol Esters and Glycidyl Esters in Refined, Bleached, Deodorized Palm Oil.
Not medical advice. For informational purposes only. Always consult a healthcare professional. Terms
Surprising Findings
Acidity of bleaching earth doesn’t matter—adsorption capacity does.
Most assume stronger acid = better cleaning, but the study shows it’s about how well the clay soaks up toxins, not how acidic it is.
Practical Takeaways
Choose brands that specify 'water-degummed' or 'high-quality crude palm oil' on labels.
Not medical advice. For informational purposes only. Always consult a healthcare professional. Terms
Surprising Findings
Acidity of bleaching earth doesn’t matter—adsorption capacity does.
Most assume stronger acid = better cleaning, but the study shows it’s about how well the clay soaks up toxins, not how acidic it is.
Practical Takeaways
Choose brands that specify 'water-degummed' or 'high-quality crude palm oil' on labels.
Publication
Journal
Journal of oleo science
Year
2018
Authors
Biow Ing Sim, Halimah Muhamad, O. Lai, F. Abas, C. Yeoh, I. Nehdi, Y. Khor, C. Tan
Related Content
Claims (6)
Using a lot of phosphoric acid to clean the oil and then a special clay removes almost all of another harmful chemical in the final product.
Using water to clean raw palm oil before refining can cut down one harmful chemical by about half.
A special type of clay used to clean oil works better at removing harmful chemicals if it can trap more stuff, not because it’s more acidic.
If the raw palm oil is of low quality, it creates more harmful chemicals when heated during refining.
How well the clay soaks up bad stuff matters more than how acidic it is when cleaning palm oil.