MadSci Network: Chemistry

RE: The Skin on Heated Milk

Area: Chemistry
Posted By: Artem Evdokimov, Grad student, Structural Biology (Chemistry)
Date: Wed Oct 23 19:23:15 1996

Dear Ada,

Milk is a colloidal mixture of water, lipids, carbohydrates and proteins. When you heat this mixture, evaporation goes on and the upper layer of milk gets supersaturated, high temperature denatures milk proteins and the colloid collapses. The "film" hence is a layer of clotted proteins and long chain carbohydrates, interpenetrated and fused by milk fats. (Consider the fact that almost all proteins have hydrophobic inner core which in normal state is not exposed to the solvent. When protein denatures, the hydrophobic core gets exposed and fats penetrate it, completing the process of "film" formation).



Current Queue | Current Queue for Chemistry | Chemistry archives

Try the links in the MadSci Library for more information on Chemistry.

MadSci Home | Information | Search | Random Knowledge Generator | MadSci Archives | Mad Library | MAD Labs | MAD FAQs | Ask a ? | Join Us! | Help Support MadSci
MadSci Network