Dairy Unit Operations

In centrifugal cream separation, fat globules migrate toward the axis of rotation (inward) while skim milk moves outward because:

Options:

• (A) Milk fat has a lower density ($\sim 930\text{ kg/m}^3$) than milk serum / skim milk ($\sim 1035\text{ kg/m}^3$)
• (B) Milk fat is negatively charged
• (C) Skim milk is non-polar
• (D) Centrifugal force repels fat