E330: Citric Acid (Universal Acidulant / Chelator) vs. E415: Xanthan Gum (Pseudoplastic Hydrocolloid Thickener)
Comparing 2 standards across 16 specifications. 16 key differences identified.
E330 (Citric Acid) is a tricarboxylic organic acid produced by industrial fermentation of Aspergillus niger on carbohydrate substrates. INS 330, ADI is Not Limited (Quantum Satis), the single most widely used acidulant, flavor enhancer, and metal chelator on Earth.
Xanthan gum (E415) is a high-molecular-weight microbial exopolysaccharide produced by Xanthomonas campestris fermentation, renowned for extreme pseudoplastic shear-thinning rheology, freeze-thaw stability, and gluten-free dough structural binding.
Specification Comparison Table
16 Parameters| Parameter / Spec | ||
|---|---|---|
|
E-Number Code
|
E330 | — |
|
INS / Codex Number
|
INS 330 | — |
|
Functional Class
|
Acidity Regulator, Acidulant, Sequestrant, Antioxidant Synergist | — |
|
Acceptable Daily Intake (ADI)
|
Not Limited (Quantum Satis) | — |
|
Chemical Formula
|
C6H8O7 (2-hydroxypropane-1,2,3-tricarboxylic acid) | — |
|
Primary Mechanism
|
Delivers bright citrus sourness; chelates pro-oxidant metal ions (Fe/Cu); activates pectin gelation | — |
|
Common Target Foods
|
Citrus beverages, candy/confectionery, jams, canned tomatoes, cheese curdling, soft drinks | — |
|
Dietary Compliance
|
100% Vegan (Aspergillus fungal sugar fermentation), Halal, Kosher | — |
|
Safety Approval
|
EFSA Authorized / FDA GRAS (21 CFR 184.1033) | — |
|
INS / E-Number
|
— | INS 415 / E415 |
|
Polymer Structure
|
— | Cellulose β-(1,4)-D-glucan backbone with trisaccharide side chains (mannose-glucuronic acid-mannose) |
|
Molecular Weight
|
— | 2.0 × 10⁶ to 5.0 × 10⁶ Da (2–5 MDa) |
|
Rheological Behavior
|
— | Extreme Pseudoplasticity (Shear-thinning index n ≈ 0.15–0.25) |
|
Yield Stress
|
— | High at rest (suspends dense particulates like herbs in salad dressing permanently) |
|
Thermal Stability
|
— | Maintains constant viscosity from 0°C to 100°C across pH 2.0 to 12.0 |
|
Synergistic Gelation
|
— | Forms thermo-reversible firm gels when blended with Locust Bean Gum (E410) or Guar Gum (E412) |