E270: Lactic Acid (Biological Acidulant) vs. E406: Agar-Agar (Seaweed Hydrocolloid Gel)
Comparing 2 standards across 10 specifications. 9 key differences identified.
E270 (L-Lactic Acid) is a natural alpha-hydroxy acid produced by fermentation of carbohydrates by lactic acid bacteria (Lactobacillus). INS 270, ADI is Not Limited (Quantum Satis), imparting a smooth, mild sour taste in dairy, beers, and bakery sourdoughs.
E406 (Agar-Agar) is a natural sulfated galactan polysaccharide hydrocolloid extracted from red algae seaweeds (Rhodophyta). INS 406, ADI is Not Limited (Quantum Satis), forming firm, brittle thermoreversible gels with huge hysteresis (melts at 85°C, sets at 35°C).
Specification Comparison Table
10 Parameters| Parameter / Spec | ||
|---|---|---|
|
E-Number Code
|
E270 | E406 |
|
INS / Codex Number
|
INS 270 | INS 406 |
|
Functional Class
|
Acidity Regulator, Preservative, Flavoring Agent | Gelling Agent, Thickener, Stabilizer (Plant Gelatin Alternative) |
|
Acceptable Daily Intake (ADI)
|
Not Limited (Quantum Satis) | Not Limited (Quantum Satis) |
|
Primary Mechanism
|
Provides sustained buffering and mild tartness while suppressing spore-forming spoilage bacteria | Forms double helices that aggregate into rigid 3D water-trapping gel matrices |
|
Common Target Foods
|
Yogurt, sourdough breads, sour ales (Berliner Weisse), olives, confectionery, carcass rinses | Vegan jellies, Asian desserts (Yokan), confectionery glazes, microbiological agar plates |
|
Dietary Compliance
|
100% Vegan (Bacterial fermentation of beet/corn sugar), Halal, Kosher | 100% Vegan (Red marine algae), Halal, Kosher (Animal-gelatin free) |
|
Safety Approval
|
EFSA Authorized / FDA GRAS (21 CFR 184.1061) | EFSA Authorized / FDA GRAS (21 CFR 184.1115) |
|
Chemical Formula
|
C3H6O3 (2-hydroxypropanoic acid, pKa 3.86) | — |
|
Chemical Components
|
— | Agarose (Gelling polymer) and Agaropektin (Sulfated polymer) |