Side-by-Side Comparison
Food Additives & E-Numbers
E250: Sodium Nitrite (Curing Salt / Anti-Botulism Preservative) vs. E627: Disodium Guanylate (GMP Umami Synergist)
Comparing 2 standards across 12 specifications. 12 key differences identified.
Comparing:
E250: Sodium Nitrite (Curing Salt / Anti-Botulism Preservative)
E627: Disodium Guanylate (GMP Umami Synergist)
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.
E627 (Disodium 5'-Guanylate / GMP) is the sodium salt of guanylic acid, a purine nucleotide naturally concentrated in dried shiitake mushrooms. INS 627, ADI is Not Specified, exhibiting massive 8x–30x synergistic umami amplification when paired with MSG.
Specification Comparison Table
12 Parameters| Parameter / Spec | ||
|---|---|---|
|
Chemical Formula
|
NaNO₂ (Molecular Weight: 68.995 g/mol) | C10H12N5Na2O8P · xH2O |
|
Functional Class
|
Preservative / Color Retention Agent (Curing Salt) | Flavor Enhancer (Purine Nucleotide Umami Synergist) |
|
Acceptable Daily Intake (ADI)
|
0–0.07 mg/kg body weight per day (EFSA / JECFA) | Not Specified (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
|
— | E627 |
|
INS / Codex Number
|
— | INS 627 |
|
Primary Mechanism
|
— | Binds allosteric site on T1R1/T1R3 umami receptor, locking glutamate into the orthosteric binding pocket |
|
Common Target Foods
|
— | Savory snack seasonings (Doritos, chips), instant ramen noodle seasoning packets, bouillon cubes |
|
Dietary Compliance
|
— | Vegan (Microbial fermentation of tapioca/sugar), Halal, Kosher |
|
Safety Approval
|
— | EFSA Authorized / FDA GRAS (21 CFR 172.530) |
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