vitamin k3
Definition
Noun A synthetic form of vitamin K, chemically known as menadione, used as a nutritional supplement and in some medical treatments.
Usage
"Vitamin K3" is used as a specific term in nutrition, biochemistry, and medicine to refer to the synthetic compound menadione. It is distinct from the naturally occurring forms of vitamin K (K1 and K2).
Examples
- The study compared the bioavailability of vitamin K3 with that of vitamin K1.
- This animal feed is supplemented with vitamin K3 to prevent deficiencies.
- Due to potential toxicity, vitamin K3 is not commonly used in human supplements in many countries.
Advanced Usage
- Chemical Precursor: In biological systems, vitamin K3 (menadione) can be converted by the body into an active form of vitamin K2 (menaquinone-4).
- Research Context: The term is frequently used in scientific literature discussing the properties, metabolism, or effects of different vitamin K analogs.
Variants and Related Words
- Menadione: The chemical name for vitamin K3.
- Vitamin K: The general term for a group of fat-soluble vitamins essential for blood clotting and bone health.
- Vitamin K1 (Phylloquinone): The natural form found in green leafy vegetables.
- Vitamin K2 (Menaquinone): A group of natural forms produced by bacteria and found in some fermented foods and animal products.
Synonyms
- Menadione
- Synthetic vitamin K
Notes on Meaning
While "vitamin K3" is a member of the vitamin K group, its use is primarily industrial and veterinary. Its status as a true "vitamin" for humans is debated due to its synthetic nature and safety concerns, which differentiates it from vitamins K1 and K2.
Noun
-
a form of vitamin K
Khám phá thêm
Các từ liên quan
Từ đồng nghĩa
Từ gần giống
