retinol

Thân thiện

A scientist carefully adds retinol to a test tube in the laboratory.

Definition

1. Noun:
   • A form of vitamin A: Retinol is a specific, preformed type of vitamin A that is found in animal products and is used by the body for vision, immune function, and skin health.
   • An unsaturated alcohol: In chemical terms, retinol is classified as an unsaturated alcohol, which is a compound with a specific molecular structure containing a hydroxyl group (-OH) and carbon-carbon double bonds.

Usage Examples

• Noun:
  • Retinol is essential for good vision, especially in low light.
  • This skincare cream contains retinol to help reduce the appearance of wrinkles.
  • The primary dietary sources of retinol are liver, fish oils, and dairy products.

Advanced Usage

• "Retinol activity equivalents (RAE)": A unit of measurement used to compare the vitamin A activity from different sources, such as preformed retinol and provitamin A carotenoids.
  • Nutrition labels may list vitamin A content in retinol activity equivalents.

Variants and Related Words

• Retinal (noun): The aldehyde form of retinol, which is directly involved in the visual cycle in the eye.
• Retinoic acid (noun): An acid derived from retinol that plays a crucial role in gene expression and cell growth.
• Provitamin A (noun): Compounds like beta-carotene that the body can convert into retinol.

Synonyms

• Vitamin A1: Another name for the specific compound retinol.
• Preformed vitamin A: A term distinguishing retinol (found in animal sources) from provitamin A carotenoids (found in plant sources).

Related Compounds and Terms

• Beta-carotene (noun): A provitamin A carotenoid that the body converts into retinol.
  • The body converts beta-carotene from carrots into retinol.
• Tretinoin (noun): A pharmaceutical drug that is a form of retinoic acid, often used in acne treatment.

Học thuật

Noun

1. an unsaturated alcohol that occurs in marine fish-liver oils and is synthesized biologically from carotene

Từ đồng nghĩa

• vitamin a1