stachyose

Thân thiện

A scientist examines stachyose crystals under a microscope.

Definition

1. Noun:
   • A tetrasaccharide sugar: "stachyose" is a specific type of carbohydrate composed of four monosaccharide units.
   • A plant compound: It is a naturally occurring sugar found in the roots or tubers of certain plants, notably the Chinese artichoke (Stachys sieboldii).

Usage Examples

• Noun:
  • Stachyose is a tetrasaccharide that humans cannot fully digest.
  • The tubers contain high levels of stachyose.

Advanced Usage

• Biochemical Context: In biochemistry, "stachyose" is classified as a raffinose-family oligosaccharide (RFO), which can cause flatulence in some individuals due to fermentation in the large intestine.
  • Stachyose and raffinose are common in legumes and some root vegetables.

Variants and Related Words

• Raffinose (n): A closely related trisaccharide often found in the same plant families as stachyose.
• Tetrasaccharide (n): The general class of sugars to which stachyose belongs, consisting of four monosaccharide molecules.

Synonyms

• Plant oligosaccharide: A general term for short-chain carbohydrates like stachyose found in plants.
• (Chemical name): O-α-D-galactopyranosyl-(1→6)-O-α-D-galactopyranosyl-(1→6)-O-α-D-glucopyranosyl-(1↔2)-β-D-fructofuranoside.

Notes on Meaning

• Primary Meaning: The term almost exclusively refers to the specific chemical compound. It does not have common idiomatic or phrasal verb uses.
• Context: Its usage is highly specialized, primarily confined to fields like botany, food science, biochemistry, and nutrition.

Học thuật

Noun

1. a tetrasaccharide found in the tubers of the Chinese artichoke