Oil composition and method of recovering same

Patent metadata

Field	Value
Publication number	US-9695449-B2
Application number	US-201314139671-A
Country	US
Kind code	B2
Filing date	Dec 23, 2013
Priority date	Sep 10, 2008
Publication date	Jul 4, 2017
Grant date	Jul 4, 2017

Abstract

The present invention generally relates to oil compositions and methods of producing such oil compositions. More particularly, the present invention relates to an oil composition recovered from a fermentation product as well as methods of recovering such oil compositions for use in various processes such as bio-diesel production as well as in various edible applications.

First claim

I claim:

1. A method of recovering an oil composition from a fermentation process comprising the steps of
fermenting a starch composition to form a fermented product comprising an oil fraction and a first aqueous portion;
separating an oil fraction from the first aqueous portion, wherein the oil fraction comprises the oil composition and from 10% to 60% moisture w/w moisture based on the total weight of the separated oil fraction;
adjusting the pH of the oil fraction to produce the oil composition and a second aqueous portion; and
recovering the oil composition from the pH adjusted oil fraction, such that the recovered oil composition comprises no greater than about 2% moisture.

2. The method of claim 1 , wherein the recovered oil composition comprises a free fatty acid content of no greater than 5% w/w based on the total weight of the oil composition.

3. The method of claim 1 , wherein the recovered oil composition comprises an iodine value of not greater than 125.

4. The method of claim 1 , wherein the recovered oil composition comprises a combined moisture and insoluble content of no greater than 1% w/w based on the total weight of the oil composition.

5. The method of claim 1 , wherein the recovered oil composition has an unsaponifiables content of no greater than 3% based on the total weight of the composition.

6. The method of claim 1 , wherein the recovered oil composition comprises at least one component selected from the group consisting of:
a lutein content of at least 50 mcg/g,
a zeaxanthin content of at least 30 mcg/g,
a cis-lutein/zeaxanthin content of at least 10 mcg/g,
an alpha-cryptoxanthin content of at least 5 mcg/g,
a beta-cryptoxanthin content of at least 5 mcg/ g,
an alpha-carotene content of at least 0.5 mcg/g,
a beta-carotene content of at least 1 mcg/g,
a cis-beta-carotene content of at least 0 .1 mcg/g,
an alpha-tocopherol content of at least 50 mcg/g,
a beta-tocopherol content of at least 2 mcg/g,
a gamma-tocopherol content of at least 300 mcg/g,
a delta-tocopherol content of at least 15 mcg/g,
an alpha-tocotrienol content of at least 50 mcg/g,
a beta-tocotrienol content of at least 5 mcg/g,
a gamma-tocotrienol content of at least 80 mcg/g,
a delta-tocotrienol content of at least 5 mcg/g.

7. The method of claim 1 , comprising the steps of
saccharifying the starch composition, without cooking, with an enzyme composition to form a saccharified composition; and
fermenting the saccharified composition to yield the fermented product.

8. The method of claim 7 , wherein the starch composition is hydrolyzed at a pH of 4.0 to 5.0.

9. The method of claim 7 , wherein the starch composition that is saccharified is in a slurry comprising water and 5% to 60% dried solids.

10. The method of claim 7 , wherein the starch composition is held at a temperature of 0° C. to 20° C. below initial gelatinization temperature of the starch composition for a period of 5 minutes to 12 hours during saccharifying and before fermenting.

11. The method of claim 1 , wherein the fermented product is beer, whole stillage, thin stillage or syrup.

12. The method of claim 1 , wherein the step of separating an oil fraction from the fermented product is accomplished by applying a first centrifugal force to the oil fraction.

13. The method of claim 12 , wherein applying the first centrifugal force forms an emulsion.

14. The method of claim 1 , wherein the separated oil fraction comprises from 10% to 40% w/w protein based on the total weight of the separated oil fraction.

15. The method of claim 1 , wherein the separated oil fraction comprises from 20% to 70% w/w oil based on the total weight of the separated oil fraction.

16. The method of claim 1 , wherein the pH is adjusted to a range of from 7 to 10.

17. The method of claim 1 , further comprising the step of applying a second centrifugal force to the oil fraction after adjusting the pH.

18. The method of claim 17 , further comprising the step of removing the second aqueous portion after applying the second centrifugal force.

Assignees

• Poet Res Inc
• Poet Llc

Inventors

• Bootsma Jason

Classifications

• C10L2290/26

  Composting, fermenting or anaerobic digestion fuel components or materials from which fuels are prepared · CPC title

• C12P7/64 Primary

  Fats; Fatty oils; Ester-type waxes; Higher fatty acids, i.e. having at least seven carbon atoms in an unbroken chain bound to a carboxyl group; Oxidised oils or fats · CPC title

• C11C1/045

  using enzymes or microorganisms, living or dead · CPC title

• C10L1/026 Primary

  for compression ignition · CPC title

• C11C1/08

  Refining · CPC title