E300: L-Ascorbic Acid (Vitamin C Antioxidant & Flour Improver) vs. E415: Xanthan Gum (Pseudoplastic Hydrocolloid Thickener)
Comparing 2 standards across 12 specifications. 12 key differences identified.
L-Ascorbic Acid (E300, C6H8O6) is a water-soluble antioxidant, dough conditioner, and vitamin fortifier that scavenges dissolved oxygen, prevents fruit enzymatic browning, and cross-links wheat gluten disulfide bridges in commercial baking.
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
12 Parameters| Parameter / Spec | ||
|---|---|---|
|
INS / E-Number
|
INS 300 / E300 | INS 415 / E415 |
|
Chemical Formula
|
C₆H₈O₆ (Molecular Weight: 176.12 g/mol) | — |
|
Functional Classes
|
Antioxidant / Flour Treatment Agent / Sequestrant / Nutrient Supplement | — |
|
Acceptable Daily Intake (ADI)
|
Not Specified (Quantum Satis / GRAS under FDA 21 CFR 182.3013) | — |
|
Solubility
|
330 g/L in water at 20°C | — |
|
Redox Potential
|
+0.06 V at pH 7.0 (readily donates two electrons to dehydroascorbic acid) | — |
|
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) |