Arabinogalactan [9036-66-2]

(+)-Arabinogalactan (or polyarabinogalactan), a natural, highly branched water-soluble polysaccharide. Primarily extracted from larch wood, it consists of galactose and arabinose units in roughly a 6:1 ratio and is widely used as a dietary fiber, prebiotic, and immune-supporting supplement.

Synonyms:
Polyarabinogalactan; Arabinogalactan polysaccharide; D-Galacto-L-arabinan

CAS No:
9036-66-2

Molecular Formula:
[(C₅H₈O₄)(C₆H₁₀O₅)₆]x

Molecular Weight:
15-60kD

Appearance:
White, off-white to pale beige powder

Purity:
≥95% (Assay, anhy)

Melting Point:
≥200°C(dec.)

Specific Rotation:
10° (C=1,H2O)

Viscosity:
≤5 (5% at 25°C, CPS)

Water (KF):
3-6%

Yeast:
≤10 CFU/g

Mold:
≤100 CFU/g

Microbial Count (APC, 100 °C:)
≤1000CFU/g

Particle Size (+40 mesh):
≤20%

Heavy Metals:
≤0-0005%

Cadmium (Cd):
≤0.000025%

Lead (Pb):
≤0.00001%

Mercury (Hg):
≤0.00001%

Arsenic (As):
≤0.00004%

Solubility:
Water

Storage and Stability:
May be stored at RT for short-term only. Long-term storage is recommended at 4°C. For maximum recovery of product, centrifuge the original vial prior to removing the cap.