E306: Tocopherol-Rich Extract (Natural Vitamin E Antioxidant) vs. E631: Disodium Inosinate (IMP Meat Umami Synergist)
Comparing 2 standards across 10 specifications. 10 key differences identified.
E306 is a natural mixture of alpha-, beta-, gamma-, and delta-tocopherols steam-distilled from vegetable oils (soybean, sunflower). INS 306, ADI is Not Limited, serving as the gold standard lipid-soluble antioxidant in fats and oils.
E631 (Disodium 5'-Inosinate / IMP) is the sodium salt of inosinic acid, a purine nucleotide naturally found in aged beef, katsuobushi bonito flakes, and cured meats. INS 631, ADI is Not Specified, multiplying glutamate umami flavor.
Specification Comparison Table
10 Parameters| Parameter / Spec | ||
|---|---|---|
|
E-Number Code
|
E306 | E631 |
|
INS / Codex Number
|
INS 306 | INS 631 |
|
Functional Class
|
Antioxidant (Lipid Peroxidation Inhibitor) | Flavor Enhancer (Meat Purine Umami Synergist) |
|
Acceptable Daily Intake (ADI)
|
Not Limited (Quantum Satis) | Not Specified (Quantum Satis) |
|
Primary Mechanism
|
Free-radical scavenger donating phenolic hydrogen atoms to peroxyl radicals (ROO•), breaking lipid auto-oxidation chain | Allosteric conformational stabilizer of human T1R1/T1R3 G-protein umami receptor heterodimer |
|
Common Target Foods
|
Vegetable cooking oils, margarines, infant formula, fish oil capsules, potato crisps | Instant soups, meat seasonings, potato chips, canned meat gravies, cured snacks |
|
Dietary Compliance
|
100% Vegan (Plant oil distillate), Halal, Kosher Certified | Vegan (Bacterial Corynebacterium fermentation standard), Halal, Kosher |
|
Safety Approval
|
EFSA Authorized / FDA GRAS (21 CFR 184.1890) | EFSA Authorized / FDA GRAS (21 CFR 172.535) |
|
Active Isomers
|
d-Gamma-Tocopherol, d-Delta-Tocopherol, d-Alpha-Tocopherol | — |
|
Chemical Formula
|
— | C10H11N4Na2O8P · xH2O |