E500: Sodium Bicarbonate (Baking Soda / Ins 500ii) vs. E621: Monosodium Glutamate (MSG / Umami Flavor Enhancer)
Comparing 2 standards across 13 specifications. 13 key differences identified.
E500 (Sodium Carbonates / Sodium Bicarbonate NaHCO3) is a mineral salt leavening agent and pH buffer. INS 500(ii), ADI is Not Limited (Quantum Satis), decomposing under heat and acid to produce carbon dioxide bubbles that expand cakes, cookies, and pretzel crusts.
Monosodium Glutamate (E621, MSG, C5H8NO4Na) is the sodium salt of L-glutamic acid produced via Corynebacterium glutamicum sugar fermentation, activating human T1R1/T1R3 heterodimer umami taste receptors to enhance savory mouthfeel.
Specification Comparison Table
13 Parameters| Parameter / Spec | ||
|---|---|---|
|
Functional Class
|
Raising / Leavening Agent, Acidity Regulator, Anti-Caking | Flavor Enhancer (Umami savory tastant) |
|
Acceptable Daily Intake (ADI)
|
Not Limited (Quantum Satis) | 30 mg/kg body weight per day (EFSA 2017) / Not Specified (JECFA 1987) |
|
Chemical Formula
|
NaHCO3 (Sodium Hydrogen Carbonate) | C₅H₈NO₄Na · H₂O (Sodium 2-aminopentanedioate monohydrate) |
|
E-Number Code
|
E500 | — |
|
INS / Codex Number
|
INS 500(ii) (Bicarbonate) / 500(i) (Carbonate) | — |
|
Primary Mechanism
|
Thermal (>50°C) or acid neutralization releases CO2 gas: NaHCO3 + H+ -> Na+ + H2O + CO2 | — |
|
Common Target Foods
|
Baking powders, cookies, cakes, pretzel alkaline dips, effervescent drink tablets | — |
|
Dietary Compliance
|
100% Vegan (Mineral Solvay process/Trona mining), Halal, Kosher | — |
|
Safety Approval
|
EFSA Authorized / FDA GRAS (21 CFR 184.1736) | — |
|
INS / E-Number
|
— | INS 621 / E621 |
|
Taste Receptor Target
|
— | T1R1 + T1R3 G-protein coupled receptor (GPCR) heterodimer + mGluR4 |
|
Sodium Content
|
— | 12.3% Sodium by weight (compared to 39.3% in standard table salt NaCl) |
|
Synergistic Umami Multiplication
|
— | 1:1 ratio with E627 (Disodium Guanylate) / E631 (Disodium Inosinate) increases umami perception up to 8-fold |