Process for removing metal from a metal-containing glyceride oil comprising a basic quaternary ammonium salt treatment
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United States of America Patent
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Dec 11, 2018
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May 17, 2018
app pub date -
May 27, 2016
filing date -
May 27, 2015
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Abstract
The present invention relates to a process for removing metal from metal-containing glyceride oil comprising the steps of:
- (i) contacting a glyceride oil, comprising chromium, manganese, iron, cobalt, nickel and/or copper in a total amount of from 10 mg/kg to 10,000 mg/kg, with a liquid comprising a basic quaternary ammonium salt to form a treated glyceride oil; wherein the basic quaternary ammonium salt comprises a basic anion selected from hydroxide, alkoxide, alkylcarbonate, hydrogen carbonate, carbonate, serinate, prolinate, histidinate, threoninate, valinate, asparaginate, taurinate and lysinate; and(ii) separating the treated glyceride oil from a salt comprising the quaternary ammonium cation, providing a treated glyceride oil containing a reduced amount of metals.
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