Tailored oils produced from recombinant heterotrophic microorganisms
View Patent ↗Methods and compositions for the production of oil, fuels, oleochemicals, and other compounds in recombinant microorganisms are provided, including oil-bearing microorganisms and methods of low cost cultivation of such microorganisms. Microalgal cells containing exogenous genes encoding, for example, a lipase, a sucrose transporter, a sucrose invertase, a fructokinase, a polysaccharide-degrading enzyme, a keto acyl-ACP synthase enzyme, a fatty acyl-ACP thioesterase, a fatty acyl-CoA/aldehyde reductase, a fatty acyl-CoA reductase, a fatty aldehyde reductase, a fatty aldehyde decarbonylase, and/or an acyl carrier protein are useful in manufacturing transportation fuels such as renewable diesel, biodiesel, and renewable jet fuel, as well as oleochemicals such as functional fluids, surfactants, soaps and lubricants.
1. A microbial oil obtained from a recombinant microalga, wherein the fatty acid profile of the oil comprises at least 40% saturated fatty acid having C10, C12 and C14, and the oil further comprises sterols of the recombinant microalga, wherein the recombinant microalga has been genetically engineered to express at least one lipid pathway enzyme at an altered level compared to a non-engineered microalga, the lipid pathway enzyme being selected from the group consisting of a desaturase, a ketoacyl synthase, and an acyl-ACP thioesterase.
2. The microbial oil of claim 1 , wherein the at least one lipid pathway enzyme is an endogenous lipid pathway enzyme that is expressed at a lower level compared to the non-engineered microalga.
3. The microbial oil of claim 2 , wherein the at least one endogenous lipid pathway enzyme is a desaturase.
4. The microbial oil of claim 3 , wherein the at least one endogenous lipid pathway enzyme is fatty acyl desaturase enzyme.
5. The microbial oil of claim 3 , wherein the at least one endogenous lipid pathway enzyme is a stearoyl ACP desaturase-enzyme.
6. The microbial oil of claim 2 , wherein the at least oneendogenous lipid pathway enzyme is an acyl-ACP thioesterase.
7. The microbial oil of claim 2 , wherein the at least one endogenous lipid pathway enzyme is a ketoacyl synthase.
8. The microbial oil of claim 7 , wherein the at least one endogenous lipid pathway enzyme is a ketoacyl synthase II enzyme.
9. The microbial oil of claim 7 , wherein the at least one endogenous lipid pathway enzyme is a ketoacyl synthase I enzyme.
10. The microbial oil of claim 7 , wherein the at least one endogenous lipid pathway enzyme is a ketoacyl synthase IV enzyme.
11. The microbial oil of claim 1 , wherein the at least one lipid pathway enzyme is expressed at a higher level compared to the non-engineered microalga.
12. The microbial oil of claim 11 , wherein the at least one lipid pathway enzyme is a ketoacyl synthase.
13. The microbial oil of claim 1 , wherein the fatty acid profile of the oil has not been altered by further processing the microbial oil by one or more of esterification, distillation, fractionation, crystallization, and precipitation.
14. The microbial oil of claim 1 , wherein the fatty acid profile of the oil comprises at least 70% saturated fatty acid.
15. The microbial oil of claim 1 , wherein the fatty acid profile of the oil comprises at least 4% C10.
16. The microbial oil of claim 1 , wherein the fatty acid profile of the oil comprises at least 10% C12.
17. The microbial oil of claim 1 , wherein the fatty acid profile of the oil comprises at least 10% C14.
18. The microbial oil of claim 1 , wherein the fatty acid profile of the oil comprises at least 40% C14.
19. The microbial oil of claim 1 , wherein the fatty acid profile of the comprises at least 50% total combined amounts of C10:0, C12:0 and C14:0.
20. The microbial oil of claim 1 , wherein the microbial oil is Prototheca oil or Chlorella oil.
21. The microbial oil of claim 20 , wherein the microbial oil is Prototheca moriformis oil or Chlorella protothecoides oil.
22. A blended composition comprising a microbial oil of claim 1 and an oil from soy, rapeseed, canola, palm, palm kernel, coconut, corn, waste vegetable, Chinese tallow, olive, sunflower, cottonseed, chicken fat, beef tallow, porcine tallow, microalgae, macroalgae, microbes, Cuphea, flax, peanut, choice white grease, lard, Camelina sativa, mustard seed, cashew nut, oats, lupine, kenaf, calendula, help, coffee, linseed (flax), hazelnut, euphorbia, pumpkin seed, coriander, camellia, sesame, safflower, rice, tung tree, cocoa, copra, opium poppy, castor beans, pecan, jojoba, macadamia, Brazil nuts, avocado, petroleum, or a distillate fraction of any of the preceding oils.
23. The oil of claim 1 , wherein the oil has a C12:C14 fatty acid ratio of at least 5:1.
24. The oil of claim 1 , wherein the oil has a C12-C14 level of over 49%.
25. The microbial oil of claim 1 , wherein the fatty acid profile of the oil comprises at least 70% total combined amounts of C10:0, C12:0 and C14:0.