Classification of anti-oxidants

CLASSIFICATIONS OF ANTI OXIDANTS :
TYPE

1. Phenolic Type Gallates, BHT,BHA BHA with organic acids
p-hydrox benzoates di- exhibits synergijsm.
Hydroxy phenol All gallates turn
Purple with Iron. If
required use Chelating
agents.
2. Quinine :- Hydroquinone is syner-
Tocopherols, gisitie with BHA. BHT
Hydroxy-chromans citric and phosphoric acids
Hydroxy-courmarin Combination with 0.005%
Concentration is effective
In protecting from oxidation.
Tocepherols are Highly unalable
3. In organic phosphoric
Acids and its salts their
4. Sulphurs Sodium metabisulphate and Used for aqueous prepara
Sodium bi sulphate metabisulphate is ative at
Base Ph and sodium
Sulphide a higher PH
5. Amino type Casein,lecithin,ethanolamine
And cephaelin
6.Organ a acids Ascorbic acid,Citric acid, Sorbic Citric acid is preferred
And alcohols tol, mannitol and tartaric acid because , it is chelating
Agent, antioxidant and
Also maintains the acid
Mantle character of the
Skin.