E322: Lecithin (Phospholipid Emulsifier & Viscosity Reducer) vs. E415: Xanthan Gum (Pseudoplastic Hydrocolloid Thickener)
Comparing 2 standards across 12 specifications. 12 key differences identified.
Lecithin (E322) is a complex mixture of zwitterionic polar phospholipids (phosphatidylcholine, phosphatidylethanolamine, phosphatidylinositol) derived from soybeans, sunflower seeds, or egg yolks, functioning as an amphiphilic oil-in-water surfactant and chocolate viscosity reducer.
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 322i (Lecithin) / INS 322ii (Partially Hydrolyzed) | INS 415 / E415 |
|
Primary Phospholipid Composition
|
19–21% Phosphatidylcholine (PC), 8–20% PE, 10–15% PI | — |
|
Hydrophilic-Lipophilic Balance (HLB)
|
HLB 4.0–6.0 (Standard unbleached) / HLB 8.0–10.0 (Enzymatically modified lyso-lecithin) | — |
|
Acceptable Daily Intake (ADI)
|
Not Specified (Quantum Satis / GRAS under FDA 21 CFR 184.1400) | — |
|
Acetone-Insoluble Matter
|
≥ 60.0% (standard benchmark of active phospholipid content) | — |
|
Major Sources
|
Soybean (Glycine max), Sunflower (Helianthus annuus - non-GMO / allergen-free), Rapeseed, Egg yolk | — |
|
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) |