tragacanth

Thân thiện

A pharmacist measures tragacanth powder for a medicinal mixture.

Definition

1. Noun:
   • A gum used in pharmacy, adhesives, and textile printing: Tragacanth is a natural gum obtained from several species of Middle Eastern legumes (genus Astragalus). It is a viscous substance that swells in water to form a gel or thick paste, valued for its stabilizing, thickening, and adhesive properties.

Usage Examples

• Noun:
  • The pharmacist used tragacanth as a binding agent to form the pill.
  • Tragacanth is an effective thickener in the printing of textiles.
  • This historical adhesive recipe calls for tragacanth mixed with water.

Advanced Usage

• Technical/Industrial Context: In technical specifications, "tragacanth" is often classified as E413 when used as a food additive, functioning as a stabilizer, thickener, and emulsifier.
  • The ingredient list includes the stabilizer E413, which is tragacanth gum.

Variants and Related Words

• Gum tragacanth: This is a common full name for the substance, emphasizing its origin as a plant exudate.
  • Gum tragacanth is preferred for its high viscosity.
• Astragalus gummifer: This is the scientific name for one of the primary plant sources of tragacanth gum.

Synonyms

• Gum: A broad term for similar plant-derived polysaccharides (e.g., gum arabic, guar gum). Tragacanth is a specific type of gum.
• Binder: A substance that holds ingredients together, which is one of tragacanth's functions.
• Thickener: A substance that increases viscosity, a primary use of tragacanth.
• Stabilizer: A substance that helps maintain the texture and consistency of a mixture.

Notes on Meaning

The word "tragacanth" has a very specific, technical meaning and is not commonly used in everyday language. Its use is almost entirely confined to fields like pharmaceuticals, food science, textile manufacturing, and historical crafts/restoration. It does not have idiomatic or phrasal verb uses.

Học thuật

Noun

1. a gum used in pharmacy, adhesives, and textile printing