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Sodium alginate is a natural polysaccharide derived from brown seaweed, primarily used as a food additive. It acts as a thickening agent, stabilizer, and emulsifier, providing texture and consistency to various food products. Sodium alginate is soluble in water and forms a gel-like substance when combined with calcium ions, making it useful in a variety of culinary applications.
| Appearance | White to yellowish powder |
| Solubility | Soluble in cold water |
| Viscosity | Varies based on concentration and temperature |
| Gelling Agent | Forms gel in presence of calcium ions |
| pH Range | 6.0 to 8.0 |
| Typical Usage Level | 0.5% to 2.0% in formulations |
When selecting sodium alginate, consider the desired viscosity and gelling properties required for your application. Specify the intended use, as different grades may be suited for food, pharmaceutical, or cosmetic applications. Additionally, inquire about certifications such as food safety standards and ensure that the supplier can provide documentation for quality control.
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It is primarily used as a thickener, stabilizer, and emulsifier in food products.
Yes, sodium alginate is generally recognized as safe (GRAS) when used as a food additive.
It is extracted from the cell walls of brown seaweed through a process involving alkaline treatment.
Yes, sodium alginate is plant-based and suitable for vegan applications.
It should be stored in a cool, dry place, away from moisture.
No special handling is required, but it should be kept sealed to maintain quality.