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Polygalacturonic acid

Name: Polygalacturonic acid
Brand: SIGMA

≥85% (titration), from oranges

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About This Item

Linear Formula:

(C₆H₈O₆)_n

CAS Number:

25990-10-7

UNSPSC Code:

12352201

NACRES:

NA.25

MDL number:

MFCD00131972

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Properties

biological source

oranges

Quality Segment

200

assay

≥85% (titration)

form

powder

color

white to brown

mp

60 °C

solubility

aqueous NaOH: 1%, clear to hazy

storage temp.

room temp

SMILES string

O1[C@@H]([C@@H]([C@H]([C@H]([C@H]1C(=O)O)O)O)O)O

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[1]
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.

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1 of 1

This Item	P3850	81325	P9135
Sigma-Aldrich P3889 Polygalacturonic acid	Sigma-Aldrich P3850 Polygalacturonic acid sodium salt	Sigma-Aldrich 81325 Polygalacturonic acid	Sigma-Aldrich P9135 Pectin from citrus peel
assay ≥85% (titration)	assay ≥75% (titration)	assay ≥90% (enzymatic)	assay -
biological source oranges	biological source citrus fruit	biological source synthetic	biological source citrus (peels)
Quality Level 200	Quality Level 200	Quality Level 100	Quality Level 200
solubility aqueous NaOH: 1%, clear to hazy	solubility water: 10 mg/mL, hazy to turbid, faintly yellow to yellow	solubility -	solubility -
form powder	form powder	form powder	form powder
storage temp. room temp	storage temp. room temp	storage temp. room temp	storage temp. room temp

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Storage Class

11 - Combustible Solids

wgk

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Gloves, type N95 (US)

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