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US 3,947,602 AGranted
Treatment of cooking oil
AssigneeBernard Friedman
InventorsWillard S. Clewell, Jr., Bernard Friedman
Life of this patent
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Abstract
The useful life of cooking oil is increased by treating the cooking oil with a food compatible acid to counteract the adverse effect of food juices which are dissolved in the cooking oil. The cooking oil is generally also contacted with a suitable adsorbent, such as an activated carbon, to adsorb soluble oxidized and/or pyrolytic contaminants.
Claims7
A process for treating a used cooking oil which has been employed for the cooking of food, comprising:
- contacting the used cooking oil with a solution having dissolved therein a food compatible acid in an amount and concentration sufficient to extract from the cooking oil food juice components in the oil derived from the food being cooked;
- and
- separating the acid solution from the cooking oil prior to reuse of said cooking oil to thereby increase the life of the cooking oil.
A process for treating a cooking oil used for the cooking of food in a cooking zone, comprising:
- withdrawing from the cooking zone cooking oil having food juice components therein derived from the food being cooked;
- contacting the cooking oil with an aqueous solution of a food compatible acid in an amount and concentration sufficient to extract food juice components from the cooking oil;
- separating the cooking oil from the aqueous solution prior to reuse of said cooking oil;
- contacting the cooking oil with an adsorbent to adsorb soluble oxidized and pyrolytic contaminants;
- and
- recycling the cooking oil to the cooking zone.
3 more elements
Dependencies are inferred from the claim text.