P3889

Polygalacturonic acid

≥85% (titration), from oranges

• Linear Formula: (C₆H₈O₆)_n
• CAS Number: 25990-10-7
• MDL number: MFCD00131972
• UNSPSC Code: 12352201
• NACRES: NA.25

Properties

• biological source: oranges
• assay: ≥85% (titration)
• form: powder
• color: white to brown
• mp: 60 °C
• solubility: aqueous NaOH: 1%, clear to hazy
• storage temp.: room temp
• InChI: 1S/C6H10O7/c7-1-2(8)4(5(10)11)13-6(12)3(1)9/h1-4,6-9,12H,(H,10,11)/t1-,2+,3+,4-,6-/m0/s1
• InChI key: AEMOLEFTQBMNLQ-BKBMJHBISA-N

Description

General description

Polygalacturonic acid is composed of galacturonic acid unit arranged as a long polymer chain. Methyl esters of polygalacturonic acid forms pectin.

Application

Polygalacturonic acid has been used:

• in the preabsorption of 2F4 primary antibody solution
• as a substrate to determine polygalacturonase activity
• in the preparation of oligogalacturonates mixture which is used as a substrate to determine the specificities of different acetylesterases

Polygalacturonic acid sequesters metal ions. It also produces gels in the presence of Ca²⁺ that can be used for drug release or to immobilize cells or enzymes for the production of biomolecules.

Biochem/physiol Actions

In land plants, polygalacturonic acids are major components of cell wall polysaccharides (pectins). Bound polygalacturonase-inhibiting peptides (PGIP) protect pectin from degradation by fungal polygalacturonases.

Other Notes

To gain a comprehensive understanding of our extensive range of Polysaccharides for your research, we encourage you to visit our Carbohydrates Category page.

Safety Information

• Storage Class: 11 - Combustible Solids
• wgk_germany: WGK 3
• flash_point_f: Not applicable
• flash_point_c: Not applicable
• ppe: Eyeshields, Gloves, type N95 (US)