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

E100: Curcumin (Turmeric Yellow Color) vs. E338: Phosphoric Acid (Cola Acidulant)

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

Comparing:
E100: Curcumin (Turmeric Yellow Color)
E338: Phosphoric Acid (Cola Acidulant)
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 →
E338: Phosphoric Acid (Cola Acidulant) →

E338 (Phosphoric Acid / H3PO4) is a mineral inorganic acid providing a uniquely dry, tangy, astringent sourness. INS 338, group ADI is 40 mg/kg bw/day (as phosphorus), the quintessential acidulant in cola beverages and processed cheeses.

View full E338: Phosphoric Acid (Cola Acidulant) spec sheet →

Specification Comparison Table

9 Parameters
Parameter / Spec
E100: Curcumin (Turmeric Yellow Color)
E338: Phosphoric Acid (Cola Acidulant)
E-Number Code
E100 E338
INS / Codex Number
INS 100(i) INS 338
Functional Class
Food Color (Yellow-Orange) Acidulant, Acidity Regulator, Sequestrant, Emulsifying Salt
Acceptable Daily Intake (ADI)
3 mg / kg body weight per day 40 mg / kg body weight per day (Group ADI as phosphorus)
Chemical Formula
C21H20O6 H3PO4 (pKa1 2.15)
Primary Mechanism
Light absorption at 420–430nm producing vibrant golden-yellow hue; polyphenol antioxidant activity Lowers beverage pH to ~2.5 with a clean, sharp, non-fruity tang; retards bacterial outgrowth
Common Target Foods
Prepared mustard, curry seasonings, margarine, cheese rinds, confectionery Cola soft drinks, root beers, processed cheese melts, sports hydration drinks
Dietary Compliance
100% Vegan (Turmeric root extraction), Halal, Kosher Certified Vegan (Mineral phosphate synthesis), Halal, Kosher
Safety Approval
EFSA Authorized / FDA GRAS (21 CFR 73.600) EFSA Authorized / FDA GRAS (21 CFR 182.1073)

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