steroid alcohol
Noun: A steroid alcohol is any of a group of naturally occurring steroid alcohols derived from plants or animals. These compounds are characterized as waxy, insoluble substances. They are a specific class of lipids (fats) with a complex molecular structure based on a steroid ring system that includes an alcohol (-OH) functional group.
The term steroid alcohol is a technical, scientific term used primarily in biochemistry, physiology, and medicine. It refers to the fundamental chemical structure of important biological compounds. * Cholesterol is a well-known steroid alcohol that is essential for animal cell membranes. * Phytosterols, which are plant steroid alcohols, can help lower blood cholesterol levels in humans.
- In biochemistry class, we learned that every steroid alcohol has a hydroxyl group attached to its ring structure.
- The analysis confirmed the presence of several steroid alcohols in the plant extract.
- Unlike fatty acids, steroid alcohols are not saponifiable.
- As a Broader Category: The term is often used to define and group specific substances like cholesterol, ergosterol (found in fungi), and stigmasterol (found in plants) under one chemical classification.
- In Research Contexts: "The study focused on the biosynthetic pathway of steroid alcohols in marine organisms."
- Sterol: This is the most common and frequently used synonym for steroid alcohol. In many contexts, "sterol" and "steroid alcohol" are interchangeable.
- Cholesterol: A specific, crucial steroid alcohol in animal cells.
- Phytosterol: A plant-derived steroid alcohol.
- Zoosterol: An animal-derived steroid alcohol.
- Sterol
- (In specific contexts) Cyclic alcohol (though this is a much broader term)
The definition is precise and scientific. The key characteristics are: 1. Natural Origin: Derived from plants or animals (or fungi). 2. Chemical Structure: Based on a steroid nucleus (a specific arrangement of four carbon rings). 3. Functional Group: Possesses at least one alcohol (-OH) group. 4. Physical Properties: Described as waxy and insoluble in water.
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any of a group of natural steroid alcohols derived from plants or animals; they are waxy insoluble substances
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