# item.guide
Side-by-Side Comparison Food Additives & E-Numbers

E100: Curcumin (Turmeric Yellow Color) vs. E503: Ammonium Bicarbonate (Baker's Ammonia / Hartshorn)

Comparing 2 standards across 9 specifications. 9 key differences identified.

Comparing:
E100: Curcumin (Turmeric Yellow Color)
E503: Ammonium Bicarbonate (Baker's Ammonia / Hartshorn)
E100: Curcumin (Turmeric Yellow Color) →

E100 (Curcumin) is a natural diarylheptanoid yellow pigment extracted from the rhizomes of turmeric (Curcuma longa). INS 100(i), ADI is 3 mg/kg bw/day, providing bright yellow-orange coloration in mustard, cheese, and curry powders.

View full E100: Curcumin (Turmeric Yellow Color) spec sheet →
E503: Ammonium Bicarbonate (Baker's Ammonia / Hartshorn) →

E503 (Ammonium Bicarbonate / (NH4)HCO3) is a historic chemical leavening salt. INS 503(ii), ADI is Not Limited (Quantum Satis), decomposing 100% into gaseous CO2, ammonia, and water at temperatures >60°C to create ultra-crisp, airy crackers and cookies.

View full E503: Ammonium Bicarbonate (Baker's Ammonia / Hartshorn) spec sheet →

Specification Comparison Table

9 Parameters
Parameter / Spec
E100: Curcumin (Turmeric Yellow Color)
E503: Ammonium Bicarbonate (Baker's Ammonia / Hartshorn)
E-Number Code
E100 E503
INS / Codex Number
INS 100(i) INS 503(ii)
Functional Class
Food Color (Yellow-Orange) Raising Agent, Acidity Regulator
Acceptable Daily Intake (ADI)
3 mg / kg body weight per day Not Limited (Quantum Satis)
Chemical Formula
C21H20O6 (NH4)HCO3
Primary Mechanism
Light absorption at 420–430nm producing vibrant golden-yellow hue; polyphenol antioxidant activity Thermal decomposition leaves zero residual water or alkali salts: (NH4)HCO3 -> NH3(g) + CO2(g) + H2O(g)
Common Target Foods
Prepared mustard, curry seasonings, margarine, cheese rinds, confectionery Thin crispy crackers, Italian biscotti, Greek koulourakia, sugar wafer shells
Dietary Compliance
100% Vegan (Turmeric root extraction), Halal, Kosher Certified Vegan (Mineral synthesis), Halal, Kosher
Safety Approval
EFSA Authorized / FDA GRAS (21 CFR 73.600) EFSA Authorized / FDA GRAS (21 CFR 184.1137)

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