Side-by-Side Comparison
Food Additives & E-Numbers
E211: Sodium Benzoate (Acid Beverage Preservative) vs. E224: Potassium Metabisulfite (Campden Salt)
Comparing 2 standards across 9 specifications. 9 key differences identified.
Comparing:
E211: Sodium Benzoate (Acid Beverage Preservative)
E224: Potassium Metabisulfite (Campden Salt)
E211 (Sodium Benzoate) is the sodium salt of benzoic acid, highly soluble and active against yeasts and bacteria in acidic environments (pH < 4.5). INS 211, group ADI is 5 mg/kg bw/day, the standard antimicrobial in carbonated soft drinks and fruit juices.
E224 (Potassium Metabisulfite / K2S2O5) is a white crystalline powder releasing 57.6% sulfur dioxide by weight when dissolved in acidic liquids. INS 224, ADI is 0.7 mg/kg bw/day, the premier sanitizing and stabilizing agent in commercial winemaking.
Specification Comparison Table
9 Parameters| Parameter / Spec | ||
|---|---|---|
|
E-Number Code
|
E211 | E224 |
|
INS / Codex Number
|
INS 211 | INS 224 |
|
Functional Class
|
Preservative (Antibacterial, Antifungal) | Preservative, Antioxidant, Sanitizer |
|
Acceptable Daily Intake (ADI)
|
5 mg / kg body weight per day (as benzoic acid equivalent) | 0.7 mg / kg body weight per day (as SO2 equivalent) |
|
Chemical Formula
|
C7H5NaO2 | K2S2O5 |
|
Primary Mechanism
|
In acidic media, converts to lipophilic undissociated benzoic acid which disrupts intracellular pH and anaerobic glycolysis in microbes | Releases free SO2 and potassium ions, neutralizing wild yeasts and preventing enzymatic must oxidation |
|
Common Target Foods
|
Acidic soft drinks, sparkling waters, salad dressings, jams, pickles, soy sauce | Grape must, commercial wines, ciders, lemon juice concentrates, dried fruit processing |
|
Dietary Compliance
|
Vegan, Halal, Kosher | Vegan, Halal, Kosher (Allergen labeling required) |
|
Safety Approval
|
EFSA Authorized / FDA GRAS (21 CFR 184.1733) | EFSA Authorized / FDA GRAS (21 CFR 182.3637) |
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