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Prebiotics & Dietary Fibers
Galacto-oligosaccharide (GOS)
CAS No.
6587-31-1
E Number
—
Purity
≥57% (固形物，GOS含量)
Grade
Food Grade / Infant Grade
Calories
2 kcal/g (Low calorie)
Glycemic Index
Very low
Galacto-oligosaccharide (GOS) is a functional oligosaccharide synthesized from lactose via β-galactosidase catalysis. Its structure is most similar to human milk oligosaccharides (HMOs), making it one of the most important prebiotics in infant formula. Beyond prebiotic effects, it also enhances calcium absorption and intestinal function.
HMO-mimicking: Structure closest to human milk oligosaccharides
Infant formula core: Standard prebiotic in infant formula globally
Prebiotic function: Promotes Bifidobacteria and Lactobacilli growth
Calcium absorption: Improves calcium bioavailability
Global approval: EFSA and FDA recognized prebiotic and immune health benefits
Specifications
| Item | Specification | Method |
|---|---|---|
| GOS Content (on solids) | ≥57% | AOAC 2001.02 |
| Solid Content | ≥75% (液体) | Refractometer |
| Loss on Drying (powder) | ≤5.0% | GB 5009.3 |
| Lactose Residue | ≤35% | HPLC |
| pH | 4.0-6.0 | GB/T 9724 |
| Arsenic (As) | ≤1.0 mg/kg | GB 5009.11 |
| Lead (Pb) | ≤0.5 mg/kg | GB 5009.12 |
| Total Plate Count | ≤1000 CFU/g | GB 4789.2 |