Sodium gluconate
Acidity Regulators
Flavoring Agents
$1.03 ~ $1.54
Food
Free sample from 100g(NF)
One unit of:25kg/bag
One unit of:25kg/bag
25kg/bag
Product Info
What is Sodium gluconate?
Sodium gluconate is the sodium salt of gluconic acid, a sugar acid, primarily used in food as a sequestrant and flavor enhancer, and industrially as a chelating agent in cleaning and concrete admixtures.
How is Sodium gluconate made?
| Step No. | Production Stage | Key Action | Control Point & Note |
|---|---|---|---|
| 1 | Raw Material Preparation | Create a fermentation medium, primarily a solution of glucose (e.g., from corn starch hydrolysis) and water. | Control Point: Glucose concentration (Brix) and purity. Note: The quality of the glucose directly impacts the fermentation efficiency and final product purity. Nutrients may be added to support microbial growth. |
| 2 | Fermentation | Inoculate the sterile glucose medium with a selected microorganism strain, typically Aspergillus niger or Gluconobacter suboxidans, in a large fermenter. | Control Point: Strict control of temperature (30-35°C), pH, and aeration levels. Note: These parameters are critical for the enzymatic conversion of glucose to gluconic acid by the microbes. |
| 3 | Neutralization | Continuously add a sodium base, such as sodium hydroxide (caustic soda), to the fermenter during the fermentation process. | Control Point: pH level (maintained around 5.5-6.5). Note: This step is crucial as it neutralizes the gluconic acid as it forms, creating sodium gluconate. This prevents the pH from dropping too low, which would inhibit or kill the microorganisms. |
| 4 | Filtration & Purification | Filter the fermentation broth to remove the biomass (microorganisms) and other solid impurities. The filtrate may be further treated with activated carbon. | Control Point: Filtration efficiency and clarity of the solution. Note: Methods like plate-and-frame filtration are common. Activated carbon is used for decolorization and removing trace organic impurities. |
| 5 | Concentration | Evaporate excess water from the purified sodium gluconate solution to increase its concentration. | Control Point: Final solution concentration and temperature. Note: This is often done under a vacuum to reduce the boiling point, preventing thermal degradation of the sodium gluconate. |
| 6 | Crystallization & Drying | Cool the concentrated solution to induce crystallization. Separate the resulting crystals (via centrifuge) and dry them in a controlled environment. | Control Point: Cooling rate, final moisture content (e.g., <1.0%). Note: The cooling profile affects crystal size and uniformity. Proper drying is essential to produce a stable, free-flowing powder. |
| 7 | Sieving & Packaging | Sieve the dried sodium gluconate powder to achieve a specific particle size distribution, followed by packaging into sealed bags or containers. | Control Point: Mesh size for sieving, package weight, and seal integrity. Note: Packaging operations must be conducted in a low-humidity environment to prevent moisture absorption and product caking. Final product is tested against specifications. |
Technical Specifications
Applications & Usage
Common Applications:
No application data available.
Mechanism of action:
| Parameter | Sodium gluconate |
|---|---|
| Functional Category | Sequestrant; Chelating Agent; Flavor Modifier; Acidity Regulator |
| Key Ingredients | Sodium Gluconate |
| Mechanism of Action | Effectively chelates polyvalent metal ions (e.g., Ca²⁺, Fe³⁺, Cu²⁺) across a wide pH range, especially in alkaline conditions, by forming stable, water-soluble complexes. This sequestration prevents the ions from catalyzing oxidative reactions, forming undesirable precipitates (e.g., scale, crystals), or creating metallic off-flavors. It also masks the bitter taste of other ingredients. |
| Application Effect in Product | Prevents struvite crystal formation in canned seafood. Stabilizes color, flavor, and texture by controlling metal ion activity in beverages, dressings, and sauces. Masks the bitter aftertaste of high-intensity sweeteners (e.g., stevia), preservatives, and mineral salts. Improves leavening agent performance by binding interfering ions. Acts as a processing aid to prevent mineral scale deposits on equipment. |
Comparison:
| Product Name | Category/Type | Key Features | Strengths (vs peers) | Weaknesses (vs peers) | Best Use Cases | Why Choose |
|---|---|---|---|---|---|---|
| Sodium gluconate | Chelating Agent, Concrete Retarder | Biodegradable, non-toxic, highly effective chelator in alkaline conditions, derived from glucose. | Superior chelation at high pH; excellent environmental and safety profile; non-corrosive. | Weaker chelating agent than EDTA at neutral or acidic pH. | Alkaline industrial cleaners, concrete admixtures, bottle washing, metal surface treatment. | For a biodegradable, high-performance chelator in alkaline systems or an effective concrete retarder. |
| Tetrasodium EDTA | Chelating Agent (Aminopolycarboxylate) | Very strong, broad-spectrum metal ion binder, stable across a wide pH range. | Extremely powerful and versatile chelator for most metal ions across all pH levels. | Poorly biodegradable, raising environmental concerns about metal remobilization. | Pulp & paper production, industrial water treatment, textiles, heavy-duty cleaning where performance outweighs eco-concerns. | When maximum chelation strength is the absolute priority and biodegradability is not a factor. |
| Sodium Citrate | Chelating Agent, Food Additive | Food-grade, readily biodegradable, acts as a pH buffer, derived from citric acid. | Excellent safety profile, highly biodegradable, good buffering capacity. | Relatively weak chelating agent compared to gluconate and EDTA, especially for iron at high pH. | Food & beverage production, pharmaceuticals, eco-friendly household cleaners, liquid detergents. | For applications requiring a food-safe, readily biodegradable chelator, particularly in sensitive products. |
| Sodium Lignosulfonate | Concrete Admixture, Dispersant | Byproduct of wood pulping, effective water reducer and set retarder for concrete. | Very low cost; effective as both a water reducer and retarder; good dispersing properties. | Dark color can stain concrete; can entrain unwanted air if not properly formulated; less pure. | General purpose and mass concrete, dye dispersion, dust control on roads, animal feed binder. | For a highly cost-effective water reducer and retarder in construction where final color is not critical. |
| Sodium Tripolyphosphate (STPP) | Sequestrant, Builder | Effectively binds calcium and magnesium ions (water hardness); provides alkalinity. | Highly effective and low-cost water softener and performance booster for detergents. | Contributes to waterway eutrophication (phosphate pollution); use is heavily restricted in many regions. | Automatic dishwashing detergents, industrial & institutional cleaners (where permitted). | For a low-cost, powerful builder in cleaning formulations where phosphate use is allowed and effective. |
| Gluconic Acid | Chelating Agent, Acidity Regulator | The parent acid of sodium gluconate; provides both chelation and acidity. | Combines acidity and chelation in one molecule; effective for rust and scale removal. | Is acidic and therefore corrosive; less effective as a chelator in alkaline conditions than its salt form. | Acidic cleaning formulations, metal rust removal, food acidulant, beverage production. | When the application requires both metal ion control and a low pH environment simultaneously. |
Technical Documents
Available Documentation
PONY Test Report No. A4E613044A4FH154805; Issued 2024-06-28
Certificate of Analysis (COA)
Quality assurance documentation
Technical Data Sheet
Detailed technical specifications