Micelle

Definition

A micelle is a spherical aggregate of surfactant molecules dispersed in a liquid colloid, where the hydrophobic (water-repelling) tails are inward-facing and the hydrophilic (water-attracting) heads are outward-facing. This structure allows micelles to solubilize fatty substances in aqueous environments.

Related terms

Surfactant:

A compound that reduces surface tension between two liquids or between a liquid and a solid, playing a crucial role in the formation of micelles.

Amphipathic molecules: Molecules that have both hydrophilic (water-loving) and hydrophobic (water-fearing) parts, essential for forming structures like micelles.

Lipid bilayer:

A double-layered structure formed by lipids in aqueous environments, fundamental to cell membrane structure and function, sharing amphipathic properties with micelles