E250: Sodium Nitrite (Curing Salt / Anti-Botulism Preservative) vs. E270: Lactic Acid (Biological Acidulant)
Comparing 2 standards across 12 specifications. 12 key differences identified.
Sodium nitrite (E250, NaNO2) is an inorganic salt used in cured charcuterie, bacon, and processed meats to inhibit Clostridium botulinum neurotoxin germination, fix cured pink nitrosyl-myoglobin color, and retard lipid autoxidation.
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.
Specification Comparison Table
12 Parameters| Parameter / Spec | ||
|---|---|---|
|
Chemical Formula
|
NaNO₂ (Molecular Weight: 68.995 g/mol) | C3H6O3 (2-hydroxypropanoic acid, pKa 3.86) |
|
Functional Class
|
Preservative / Color Retention Agent (Curing Salt) | Acidity Regulator, Preservative, Flavoring Agent |
|
Acceptable Daily Intake (ADI)
|
0–0.07 mg/kg body weight per day (EFSA / JECFA) | Not Limited (Quantum Satis) |
|
INS / E-Number
|
INS 250 / E250 | — |
|
USDA Maximum Residual Level
|
156 ppm in cured meat / 200 ppm in dry cured ham / 120 ppm in bacon with ascorbate | — |
|
Botulism Inhibition Threshold
|
Inhibits Clostridium botulinum spore outgrowth at ≥50–100 mg/kg in presence of NaCl | — |
|
E-Number Code
|
— | E270 |
|
INS / Codex Number
|
— | INS 270 |
|
Primary Mechanism
|
— | Provides sustained buffering and mild tartness while suppressing spore-forming spoilage bacteria |
|
Common Target Foods
|
— | Yogurt, sourdough breads, sour ales (Berliner Weisse), olives, confectionery, carcass rinses |
|
Dietary Compliance
|
— | 100% Vegan (Bacterial fermentation of beet/corn sugar), Halal, Kosher |
|
Safety Approval
|
— | EFSA Authorized / FDA GRAS (21 CFR 184.1061) |