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

E100: Curcumin (Turmeric Yellow Color) vs. E334: L-Tartaric Acid (Wine & Baking Acidulant)

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

Comparing:
E100: Curcumin (Turmeric Yellow Color)
E334: L-Tartaric Acid (Wine & Baking Acidulant)

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 →

E334 (L(+)-Tartaric Acid) is a dicarboxylic organic acid recovered as potassium bitartrate by-product from wine barrels. INS 334, ADI has historically been set at up to 20 mg/kg bw/day by JECFA, delivering a sharp, lingering tartness in candies, soft drinks, and baking powders.

View full E334: L-Tartaric Acid (Wine & Baking Acidulant) spec sheet →

Specification Comparison Table

9 Parameters
Parameter / Spec
E-Number Code
E100 E334
INS / Codex Number
INS 100(i) INS 334
Functional Class
Food Color (Yellow-Orange) Acidity Regulator, Acidulant, Synergist for Antioxidants
Acceptable Daily Intake (ADI)
3 mg / kg body weight per day Historically up to 20 mg / kg body weight per day (JECFA: 0–6 mg/kg unconditional + 6–20 mg/kg conditional acceptance)
Chemical Formula
C21H20O6 C4H6O6 (2,3-dihydroxybutanedioic acid)
Primary Mechanism
Light absorption at 420–430nm producing vibrant golden-yellow hue; polyphenol antioxidant activity Stronger sourness profile than citric acid (pKa1 2.98), stimulating salivation and activating baking soda
Common Target Foods
Prepared mustard, curry seasonings, margarine, cheese rinds, confectionery Hard sour candies, baking powder (Cream of tartar), grape beverages, wine adjustment
Dietary Compliance
100% Vegan (Turmeric root extraction), Halal, Kosher Certified 100% Vegan (Wine by-product), Halal, Kosher
Safety Approval
EFSA Authorized / FDA GRAS (21 CFR 73.600) EFSA Authorized / FDA GRAS (21 CFR 184.1099)

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