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

E100: Curcumin (Turmeric Yellow Color) vs. E501: Potassium Carbonate (Potash / Alkaline Noodle Salt)

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

Comparing:
E100: Curcumin (Turmeric Yellow Color)
E501: Potassium Carbonate (Potash / Alkaline Noodle 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 →
E501: Potassium Carbonate (Potash / Alkaline Noodle Salt) →

E501 (Potassium Carbonates / K2CO3) is an inorganic alkaline mineral salt. INS 501(i), ADI is Not Limited (Quantum Satis), used as the key 'Kansui' alkaline agent in Japanese ramen noodles and in the Dutch processing of cocoa powder.

View full E501: Potassium Carbonate (Potash / Alkaline Noodle Salt) spec sheet →

Specification Comparison Table

9 Parameters
Parameter / Spec
E100: Curcumin (Turmeric Yellow Color)
E501: Potassium Carbonate (Potash / Alkaline Noodle Salt)
E-Number Code
E100 E501
INS / Codex Number
INS 100(i) INS 501(i) (Potassium Carbonate)
Functional Class
Food Color (Yellow-Orange) Acidity Regulator, Alkaline Leavening, Kansui Salt
Acceptable Daily Intake (ADI)
3 mg / kg body weight per day Not Limited (Quantum Satis)
Chemical Formula
C21H20O6 K2CO3
Primary Mechanism
Light absorption at 420–430nm producing vibrant golden-yellow hue; polyphenol antioxidant activity Alkalinizes noodle dough (pH 9–11), tightening glutenin network and converting flavonoid pigments yellow
Common Target Foods
Prepared mustard, curry seasonings, margarine, cheese rinds, confectionery Ramen noodles (Kansui), Dutch-process alkalized cocoa powder, gingerbread leavening
Dietary Compliance
100% Vegan (Turmeric root extraction), Halal, Kosher Certified Vegan (Mineral salt), Halal, Kosher
Safety Approval
EFSA Authorized / FDA GRAS (21 CFR 73.600) EFSA Authorized / FDA GRAS (21 CFR 184.1619)

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