| ≥1 piece |
Gellan gum is a high molecular weight Polysaccharide gum produced by a pure culture fermentation of a carbohydrate by Pseudomonas elodea, purified by recovery with isopropyl alcohol, dried, and milled. The high molecular weight polysaccharide is principally composed of a tetrasaccharide repeating unit of one rhamnose, one glucuronic acid, and two glucose units, and is substituted with acyl (glyceryl and acetyl) groups as the O-glycosidically-linked esters. The glucuronic acid is neutralized to a mixed potassium, sodium, calcium, and magnesium salt. It usually contains a small amount of nitrogen containing compounds resulting from the fermentation procedures.
| ITEMS | STANDARD |
| Appearance | Off-white powder |
| Purity (CO2 yielding, %) | 3.3 ~ 6.8 |
| Nitrogen (%) | ≤ 3 |
| Loss on drying (105 °C, 2.5 hours, %) | ≤ 15 |
| Transmittance (%) | ≥ 80 |
| Gel strength (g/ cm2) | > 900 |
| Ashes (%) | < 12 |
| Isopropyl alcohol (mg/ kg) | ≤ 750 |
| pH | 6.0 ~ 8.0 |