Side-by-Side Comparison
Food Additives & E-Numbers
E251: Sodium Nitrate (Chile Saltpeter / Slow Curing) vs. E322: Lecithin (Phospholipid Emulsifier & Viscosity Reducer)
Comparing 2 standards across 14 specifications. 14 key differences identified.
Comparing:
E251: Sodium Nitrate (Chile Saltpeter / Slow Curing)
E322: Lecithin (Phospholipid Emulsifier & Viscosity Reducer)
E251 (Sodium Nitrate / NaNO3) is an inorganic salt serving as a slow-release chemical reservoir of nitrite in long-aged cured meats and hard cheeses. INS 251, ADI is 3.7 mg/kg bw/day, enzymatically reduced into nitrite over months of curing.
Lecithin (E322) is a complex mixture of zwitterionic polar phospholipids (phosphatidylcholine, phosphatidylethanolamine, phosphatidylinositol) derived from soybeans, sunflower seeds, or egg yolks, functioning as an amphiphilic oil-in-water surfactant and chocolate viscosity reducer.
Specification Comparison Table
14 Parameters| Parameter / Spec | ||
|---|---|---|
|
Acceptable Daily Intake (ADI)
|
3.7 mg / kg body weight per day (as nitrate ion) | Not Specified (Quantum Satis / GRAS under FDA 21 CFR 184.1400) |
|
E-Number Code
|
E251 | — |
|
INS / Codex Number
|
INS 251 | — |
|
Functional Class
|
Preservative, Curing Agent, Antimicrobial | — |
|
Chemical Formula
|
NaNO3 | — |
|
Primary Mechanism
|
Micrococcus and Staphylococcus bacterial nitrate reductase slowly converts nitrate (NO3-) into bioactive nitrite (NO2-) | — |
|
Common Target Foods
|
Prosciutto di Parma, dry-cured salamis, Gouda cheeses (prevents late blowing by Clostridium tyrobutyricum) | — |
|
Dietary Compliance
|
Mineral synthesis, Halal, Kosher, Vegan compliance | — |
|
Safety Approval
|
EFSA Authorized / FDA 9 CFR 424.21 | — |
|
INS / E-Number
|
— | INS 322i (Lecithin) / INS 322ii (Partially Hydrolyzed) |
|
Primary Phospholipid Composition
|
— | 19–21% Phosphatidylcholine (PC), 8–20% PE, 10–15% PI |
|
Hydrophilic-Lipophilic Balance (HLB)
|
— | HLB 4.0–6.0 (Standard unbleached) / HLB 8.0–10.0 (Enzymatically modified lyso-lecithin) |
|
Acetone-Insoluble Matter
|
— | ≥ 60.0% (standard benchmark of active phospholipid content) |
|
Major Sources
|
— | Soybean (Glycine max), Sunflower (Helianthus annuus - non-GMO / allergen-free), Rapeseed, Egg yolk |
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