E270: Lactic Acid (Biological Acidulant) vs. E338: Phosphoric Acid (Cola Acidulant)
Comparing 2 standards across 9 specifications. 9 key differences identified.
E270 (L-Lactic Acid) is a natural alpha-hydroxy acid produced by fermentation of carbohydrates by lactic acid bacteria (Lactobacillus). INS 270, ADI is Not Limited (Quantum Satis), imparting a smooth, mild sour taste in dairy, beers, and bakery sourdoughs.
E338 (Phosphoric Acid / H3PO4) is a mineral inorganic acid providing a uniquely dry, tangy, astringent sourness. INS 338, group ADI is 40 mg/kg bw/day (as phosphorus), the quintessential acidulant in cola beverages and processed cheeses.
Specification Comparison Table
9 Parameters| Parameter / Spec | ||
|---|---|---|
|
E-Number Code
|
E270 | E338 |
|
INS / Codex Number
|
INS 270 | INS 338 |
|
Functional Class
|
Acidity Regulator, Preservative, Flavoring Agent | Acidulant, Acidity Regulator, Sequestrant, Emulsifying Salt |
|
Acceptable Daily Intake (ADI)
|
Not Limited (Quantum Satis) | 40 mg / kg body weight per day (Group ADI as phosphorus) |
|
Chemical Formula
|
C3H6O3 (2-hydroxypropanoic acid, pKa 3.86) | H3PO4 (pKa1 2.15) |
|
Primary Mechanism
|
Provides sustained buffering and mild tartness while suppressing spore-forming spoilage bacteria | Lowers beverage pH to ~2.5 with a clean, sharp, non-fruity tang; retards bacterial outgrowth |
|
Common Target Foods
|
Yogurt, sourdough breads, sour ales (Berliner Weisse), olives, confectionery, carcass rinses | Cola soft drinks, root beers, processed cheese melts, sports hydration drinks |
|
Dietary Compliance
|
100% Vegan (Bacterial fermentation of beet/corn sugar), Halal, Kosher | Vegan (Mineral phosphate synthesis), Halal, Kosher |
|
Safety Approval
|
EFSA Authorized / FDA GRAS (21 CFR 184.1061) | EFSA Authorized / FDA GRAS (21 CFR 182.1073) |