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

E100: Curcumin (Turmeric Yellow Color) vs. E224: Potassium Metabisulfite (Campden Salt)

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

Comparing:
E100: Curcumin (Turmeric Yellow Color)
E224: Potassium Metabisulfite (Campden Salt)
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 →
E224: Potassium Metabisulfite (Campden Salt) →

E224 (Potassium Metabisulfite / K2S2O5) is a white crystalline powder releasing 57.6% sulfur dioxide by weight when dissolved in acidic liquids. INS 224, ADI is 0.7 mg/kg bw/day, the premier sanitizing and stabilizing agent in commercial winemaking.

View full E224: Potassium Metabisulfite (Campden Salt) spec sheet →

Specification Comparison Table

9 Parameters
Parameter / Spec
E100: Curcumin (Turmeric Yellow Color)
E224: Potassium Metabisulfite (Campden Salt)
E-Number Code
E100 E224
INS / Codex Number
INS 100(i) INS 224
Functional Class
Food Color (Yellow-Orange) Preservative, Antioxidant, Sanitizer
Acceptable Daily Intake (ADI)
3 mg / kg body weight per day 0.7 mg / kg body weight per day (as SO2 equivalent)
Chemical Formula
C21H20O6 K2S2O5
Primary Mechanism
Light absorption at 420–430nm producing vibrant golden-yellow hue; polyphenol antioxidant activity Releases free SO2 and potassium ions, neutralizing wild yeasts and preventing enzymatic must oxidation
Common Target Foods
Prepared mustard, curry seasonings, margarine, cheese rinds, confectionery Grape must, commercial wines, ciders, lemon juice concentrates, dried fruit processing
Dietary Compliance
100% Vegan (Turmeric root extraction), Halal, Kosher Certified Vegan, Halal, Kosher (Allergen labeling required)
Safety Approval
EFSA Authorized / FDA GRAS (21 CFR 73.600) EFSA Authorized / FDA GRAS (21 CFR 182.3637)

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