E202: Potassium Sorbate (Soluble Antimicrobial) vs. E224: Potassium Metabisulfite (Campden Salt)
Comparing 2 standards across 9 specifications. 9 key differences identified.
E202 (Potassium Sorbate) is the potassium salt of sorbic acid, offering 58% water solubility at room temperature. INS 202, group ADI is 11 mg/kg bw/day, widely utilized in beverages, syrups, and cosmetics to block yeast fermentation.
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
|
E202 | E224 |
|
INS / Codex Number
|
INS 202 | INS 224 |
|
Functional Class
|
Preservative (Water-Soluble Antifungal) | Preservative, Antioxidant, Sanitizer |
|
Acceptable Daily Intake (ADI)
|
11 mg / kg body weight per day (as sorbic acid equivalent) | 0.7 mg / kg body weight per day (as SO2 equivalent) |
|
Chemical Formula
|
C6H7KO2 | K2S2O5 |
|
Primary Mechanism
|
Dissociates into sorbic acid in food matrix, blocking substrate transport in fungal cells | Releases free SO2 and potassium ions, neutralizing wild yeasts and preventing enzymatic must oxidation |
|
Common Target Foods
|
Fruit juices, carbonated beverages, table syrups, dips, yogurt drinks, wine finishing | Grape must, commercial wines, ciders, lemon juice concentrates, dried fruit processing |
|
Dietary Compliance
|
Vegan, Halal, Kosher Certified | Vegan, Halal, Kosher (Allergen labeling required) |
|
Safety Approval
|
EFSA Authorized / FDA GRAS (21 CFR 182.3640) | EFSA Authorized / FDA GRAS (21 CFR 182.3637) |