choline
Học thuậtThân thiện
Definition
Noun: 1. A B-complex vitamin that is a constituent of lecithin; essential in the metabolism of fat: Choline is an essential nutrient, often grouped with B vitamins, that is a key component of lecithin. It is crucial for the proper metabolism of fats in the body and for liver function.
Usage
Choline is used as a singular, uncountable noun when referring to the nutrient as a substance. * It is an essential nutrient obtained from food. * It is discussed in contexts of biochemistry, nutrition, and health.
Examples
- Noun:
- Eggs are an excellent dietary source of choline.
- The liver requires choline to process and export fat.
- Adequate choline intake is important for brain health.
Advanced Usage
- "Choline deficiency": A state of insufficient choline in the body.
- Choline deficiency can lead to fatty liver disease.
- In biochemical contexts, choline is often discussed as a precursor to the neurotransmitter acetylcholine and to phosphatidylcholine, a major component of cell membranes.
Variants and Related Words
- Phosphatidylcholine (n): A phospholipid containing choline that is a major constituent of cell membranes and a common form of choline in supplements.
- Acetylcholine (n): A vital neurotransmitter in the brain and nervous system, synthesized from choline.
- Lecithin (n): A mixture of phospholipids, including phosphatidylcholine, often used as a source of choline.
Synonyms
- Nutrient: A substance that provides nourishment essential for life and growth. (This is a broader category.)
- Vitamin-like substance: A term sometimes used because choline has vitamin-like functions but is not always classified as a true vitamin.
Related Compounds (Not phrasal verbs, as it is a noun)
- Choline bitartrate: A common salt form of choline used in dietary supplements.
- Choline chloride: A form of choline often used in animal feed.
Noun
- a B-complex vitamin that is a constituent of lecithin; essential in the metabolism of fat