Oleic acid

Definition

Oleic acid is a monounsaturated fatty acid naturally found in various animal and vegetable fats. It plays a role in the body's chemical defenses by contributing to the antimicrobial properties of sebum.

5 Must Know Facts For Your Next Test

1. Oleic acid is a key component of human sebum, which provides a protective barrier on the skin.
2. It has antimicrobial properties that help inhibit the growth of certain pathogens on the skin surface.
3. The presence of oleic acid contributes to maintaining the slightly acidic pH of the skin, which is unfavorable for many microbes.
4. Oleic acid can disrupt microbial cell membranes, leading to cell lysis and death.
5. It works synergistically with other fatty acids and lipids in sebum to enhance its protective functions.

Review Questions

• What role does oleic acid play in the skin's defense against pathogens?
• How does oleic acid contribute to maintaining the skin's pH balance?
• In what way can oleic acid disrupt microbial cells?

Related terms

Sebum:

An oily substance produced by sebaceous glands that helps protect and lubricate the skin.

Antimicrobial Properties: Characteristics of substances that kill or inhibit the growth of microorganisms.

pH Balance: The level of acidity or alkalinity in a given environment, crucial for various biological processes.