E150d: Sulfite Ammonia Caramel (Class IV Caramel) vs. E422: Glycerol (Glycerin Humectant & Solvent)
Comparing 2 standards across 10 specifications. 10 key differences identified.
E150d (Class IV Caramel) is prepared by heating carbohydrates with both sulfite and ammonium compounds, creating an intensely dark, negatively charged colloid. INS 150d, group ADI is 300 mg/kg bw/day, the global color standard in cola soft drinks.
E422 (Glycerol / Glycerin) is a sweet, viscous trihydroxy alcohol (polyol) obtained via lipid hydrolysis. INS 422, ADI is Not Limited (Quantum Satis), acting as an essential humectant, moisture retainer, and freeze-point depressant in baked goods and icings.
Specification Comparison Table
10 Parameters| Parameter / Spec | ||
|---|---|---|
|
E-Number Code
|
E150d | E422 |
|
INS / Codex Number
|
INS 150d | INS 422 |
|
Functional Class
|
Food Color (Deep Brown / Black) | Humectant, Solvent, Sweetener, Bodying Agent |
|
Acceptable Daily Intake (ADI)
|
300 mg / kg body weight per day (Group ADI for caramel colors) | Not Limited (Quantum Satis) |
|
Primary Mechanism
|
High tinctorial power melanoidin polymers soluble and stable in carbonated phosphoric acid matrix | Strongly hygroscopic triol binds water molecules, lowering water activity (aw) and preventing staling |
|
Common Target Foods
|
Cola soft drinks, dark beers/stouts, gravies, pet foods, soy sauce | Fondant icings, soft-baked cookies, energy bars, cake sponges, liqueur bodying |
|
Dietary Compliance
|
Vegan (Sugar/syrup base), Halal, Kosher | Vegan (When derived from plant fats), Halal, Kosher |
|
Safety Approval
|
EFSA Authorized / FDA GRAS (Strictly controlled 4-MEI limits) | EFSA Authorized / FDA GRAS (21 CFR 184.1320) |
|
Isoelectric Point & Charge
|
Strong negative colloidal charge (pH 0.5–2.0) preventing precipitation in acid sodas | — |
|
Chemical Formula
|
— | C3H8O3 (Propane-1,2,3-triol) |