Caseins & Carbs
Galacto-oligosaccharies (GOS) Standard
v 2.0 | Effective 06/26/2023
Product Definition
Galaco-oligosaccharides (GOS) are non-digestible oligosaccharides consisting of 1 to 9 galactose units linked via glycosidic bonds to either terminal glucose or galactose. They are obtained by subjecting a concentrated lactose solution to the action of a β-galactosidase enzyme to produce galacto-oligosaccharides and then further terminating the reaction. The galacto-oligosaccharides may be purified by ultrafiltration, chromatography, ion exchange, electrodialysis, activated carbon filtration or any other safe and suitable process in which all or part of the galacto-oligosaccharides, minerals, other sugars are concentrated into a viscous syrup or a powder.
GOS for human consumption complies with all provisions of the U.S. Federal Food, Drug, and Cosmetic Act.
Standard: Printable PDF
Composition
| GOS Syrup (1) | GOS Powder | ||
|---|---|---|---|
| Parameter | Units of Measure | Limits | Limits |
| GOS composition | %, solids basis | 50 minimum | 28.5 minimum |
| Protein | % | 0.7 maximum (2) | 0.7 maximum |
| Lactose | % | 24 maximum (2) | 30 maximum |
| Ash (sulphated) | % | 0.5 maximum (2) | 0.5 maximum |
| Total moisture | %, as-is basis | 28 maximum | 4.5 maximum |
(1) Includes Organic GOS Syrup
(2) On a dry basis
Other Characteristics
Physico-chemical Properties
| GOS Syrup (1) | GOS Powder | ||
|---|---|---|---|
| Parameter | Units of Measure | Limits | Limits |
| pH (3) | -- | 2.8 - 3.8 | 2.8 - 3.5 |
| Viscosity | cP @ 25°C | 1,000 - 5,000 | n/a |
| Color | visual | colorless to light tan/yellow | white |
| Flavor | sensory | slightly sweet | |
(3) Measured as-is for GOS Syrup; on a 10% solution for GOS Powder
Microbiological Analysis
| Parameter | Units of Measure | Limits |
|---|---|---|
| Standard Plate Count | CFU/g | 3,000 maximum |
| Yeast and Mold | CFU/g | 100 maximum |
| Escherichia coli | CFU/g | 10 maximum |
| Enterobacteriaceae | CFU/g | 10 maximum |
| Salmonella | CFU/25g | not detected |
| Staphylococcus aureus | CFU/g | 10 maximum |
Permissible Additives
Galaco-oligosaccharides (GOS) may be pH adjusted with appropriate mineral or organic acid or base. Any pH adjustment agent used for this purpose shall be food grade and shall be used in accordance with U.S. current Good Manufacturing Practices and in accordance with its GRAS status, where applicable.
Methods of Analysis
| Parameter | Reference Method |
|---|---|
| GOS composition | AOAC 2001.02 |
| Protein | SMEDP 15.132 |
| Lactose | AOAC 984.15 |
| Ash (sulphated) | USP/NF <281> Residue on ignition |
| Dry Matter | Vacuum oven solids |
| Standard plate count | AOAC 966.23 |
| All other microbiological tests | FDA BAM |
Product Labeling
Recommended identifications: | Galacto-oligosaccharides
May be further clarified to describe its physical form (syrup or powder) |
Product applications include infant formulas and conventional foods like soups, bakery products, cereals, jellies, jams and fruit and vegetable juices. Also in nutritional and dietary supplements, medical and specialized nutrition, and pharmaceutical applications.
Product should be stored, shipped, and utilized according to the manufacturer’s established recommendations. As guidance, product should be stored and shipped in a cool, dry environment with temperature below 80°F and relative humidity below 65%. Stocks should be rotated and utilized in accordance with the manufacturer’s established date of expiration or retest.
Suitable closed containers are typical.
In no event shall ADPI be liable for any direct, indirect, incidental, special, exemplary, or consequential damages (including, but not limited to: the need to procure substitute goods or services; loss of use, data, or profits; or business interruption) however caused and on any theory of liability, whether in contract, strict liability, or tort (including negligence or otherwise) arising in any way out of the publication, use of, or reliance upon any standard, even if advised of the possibility of such damage and regardless of whether such damage was foreseeable.
