Propyl Gallate
Propyl gallate is highly effective in rendered animal fats but less so in vegetable oils, so it is usually combined with BHA or BHT rather than used alone.
Key Specifications
| CAS number | 121-79-9 |
|---|---|
| E number | E310 |
| Dosage | 100-200 ppm |
| Solubility | Slightly soluble in water, soluble in oil |
| Melting point | 146-150 degrees C |
| Form | White crystalline powder |
Strong in fats, weak alone in oils
Propyl gallate is highly effective in rendered animal fats but less so in vegetable oils, so it is usually combined with BHA or BHT rather than used alone.
Chelation and colour protection
It also chelates metal ions, which protects colour and flavour in products where trace metals would otherwise catalyse oxidation.
Typical Applications
- Rendered fats and lard — 100-200 ppm to prevent rancidity.
- Oil-based flavourings — 100 ppm to protect sensitive fat-soluble components.
Frequently Asked Questions
Why is it usually blended?
It works synergistically with BHA and BHT, and the blend is more effective and cheaper than a high dose of one.
Is there a limit?
Usually 100-200 mg/kg on fat, and often restricted to specific food categories.
Does it dissolve easily?
It dissolves in warm fat but poorly in cold oil, so it is added during heating.
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