Methods of refining a grain oil composition, and related compositions and methods of using
The present disclosure relates methods and systems for refining grain oil compositions using water, and related compositions produced therefrom. The present disclosure also relates to methods of using grain oil derived from a fermentation product in an anti-foam composition and/or feedstock to make diesel.
1. A feedstock for making diesel comprising an oil phase derived from a fermentation product, wherein the oil phase comprises:
a) a moisture content of 1 percent or less by weight of the total oil phase;
b) a fatty acid alkyl ester component present in an amount of at least 1 percent by weight of the total oil phase; and
c) an element component present in an amount from 0-10 ppm based on the total oil phase, wherein the element component comprises at least one element chosen from calcium, phosphorus, potassium, sodium, magnesium and combinations thereof.
2. The feedstock for making diesel of claim 1 , wherein the oil phase comprises element component in an amount from 0-5 ppm.
3. The feedstock for making diesel of claim 1 , wherein the fatty acid alkyl ester component is present in an amount of at least 10 percent by weight of the total oil phase.
4. The feedstock for making diesel of claim 1 , further comprising:
a) a monoglyceride component present in an amount of 10 percent or less by weight of the total oil phase;
b) a diglyceride component present in an amount of 20 percent or less by weight of the total oil phase; and
c) a triglyceride component present in an amount of at least 70 percent by weight of the total oil phase.
5. A method of refining a grain oil composition feedstock to provide a feedstock for making diesel, wherein the method comprises:
combining the grain oil composition feedstock with water to form an oil-water mixture;
exposing the oil-water mixture to a temperature for a time period at least until the oil-water mixture forms at least an oil phase and an emulsion phase;
separating at least a portion of the oil phase from the emulsion phase; and
providing the oil phase as a feedstock to make diesel.
6. The method of claim 5 , wherein the oil phase has a reduced concentration of one or more saturated fatty acids as compared to the grain oil composition feedstock, has an increased concentration of one or more monounsaturated fatty acids as compared to the grain oil composition feedstock, has an increased concentration of one or more polyunsaturated fatty acids as compared to the grain oil composition feedstock, has a decreased smoke point as compared to the grain oil composition feedstock, and/or has a decreased pour point as compared to the grain oil composition feedstock.