Is lecithin a zwitterionic surfactant?
Posted June 10, 2021
Answer
Yes, lecithin is a zwitterionic surfactant.
Zwitterionic surfactants are surfactants that have a net charge of zero so that that the surfactant molecule is essentially neutral. The lecithin contained in egg yolks possesses both acidic and alkaline properties and is a type of phospholipid-type amphoteric surfactant.
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