Side-by-Side Comparison
Food Additives & E-Numbers
E211: Sodium Benzoate (Acid Beverage Preservative) vs. E501: Potassium Carbonate (Potash / Alkaline Noodle Salt)
Comparing 2 standards across 9 specifications. 9 key differences identified.
Comparing:
E211: Sodium Benzoate (Acid Beverage Preservative)
E501: Potassium Carbonate (Potash / Alkaline Noodle 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.
E501 (Potassium Carbonates / K2CO3) is an inorganic alkaline mineral salt. INS 501(i), ADI is Not Limited (Quantum Satis), used as the key 'Kansui' alkaline agent in Japanese ramen noodles and in the Dutch processing of cocoa powder.
Specification Comparison Table
9 Parameters| Parameter / Spec | ||
|---|---|---|
|
E-Number Code
|
E211 | E501 |
|
INS / Codex Number
|
INS 211 | INS 501(i) (Potassium Carbonate) |
|
Functional Class
|
Preservative (Antibacterial, Antifungal) | Acidity Regulator, Alkaline Leavening, Kansui Salt |
|
Acceptable Daily Intake (ADI)
|
5 mg / kg body weight per day (as benzoic acid equivalent) | Not Limited (Quantum Satis) |
|
Chemical Formula
|
C7H5NaO2 | K2CO3 |
|
Primary Mechanism
|
In acidic media, converts to lipophilic undissociated benzoic acid which disrupts intracellular pH and anaerobic glycolysis in microbes | Alkalinizes noodle dough (pH 9–11), tightening glutenin network and converting flavonoid pigments yellow |
|
Common Target Foods
|
Acidic soft drinks, sparkling waters, salad dressings, jams, pickles, soy sauce | Ramen noodles (Kansui), Dutch-process alkalized cocoa powder, gingerbread leavening |
|
Dietary Compliance
|
Vegan, Halal, Kosher | Vegan (Mineral salt), Halal, Kosher |
|
Safety Approval
|
EFSA Authorized / FDA GRAS (21 CFR 184.1733) | EFSA Authorized / FDA GRAS (21 CFR 184.1619) |
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