TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Process: The process (P1) further involves transesterification of the second fraction to form long chain unsaturated fatty acid alkyl esters. The blend of long chain saturated and unsaturated fatty acids is saponified by admixing the blend with 1-3C alcohol or a combination of 1-3C alcohol and water at an elevated temperature in the presence of an alkali catalyst to form a first admixture. The 1-3C alcohol is ethanol and a majority of the ethanol is recycled ethanol recovered from the process. The process (P1) further involves: (i) adjusting the pH of the first admixture below 6 by the addition of an acid after saponification of the blend of long chain saturated and unsaturated fatty acids, and (ii) recovering a free fatty acid enriched fraction and a glycerine enriched fraction from the pH adjusted first admixture, where the recovered free fatty acid enriched fraction is the source of free fatty acids complexed with urea in step (b). The free fatty acids are complexed with urea by admixing the free fatty acids with urea dissolved in 1-3C alcohol or combination of 1-3C alcohol and water to form a second admixture. The complexation of the free fatty acids with urea forms a saturated free fatty acid enriched solids fraction and an unsaturated free fatty acid enriched liquids fraction. The step of separating the urea complexed free fatty acids into a first fraction and a second fraction involves the step of separating the solids fraction and the liquids fraction. The solids fraction and the liquids fraction are separated by filtration. The process (P1) further involves separating residual unsaturated free fatty acids in the first fraction from the saturated free fatty acids in the first fraction to obtain additional unsaturated free fatty acids. The process (P1) further involves transesterification of the additional unsaturated free fatty acids to form long chain unsaturated fatty acid alkyl esters. The residual unsaturated free fatty acids are separated from the saturated free fatty acids in the first fraction by chromatography. The fatty acid alkyl esters are complexed with urea by admixing the fatty acid alkyl esters with urea dissolved in a 1-3C alcohol or combination of 1-3C alcohol and water to form a first admixture. The complexation of the fatty acid alkyl esters with urea forms a saturated fatty acid alkyl ester solids fraction and an unsaturated fatty acid alkyl ester enriched liquids fraction. The step of separating the urea complexed fatty acid alkyl esters into a first fraction and a second fraction comprises the step of separating the solids fraction and the liquids fraction. The solids fraction and the liquids fraction are separated by filtration. The process (P2) further involves separating residual unsaturated free fatty acid alkyl esters in the first fraction from the saturated free fatty acid alkyl esters in the first fraction to obtain additional unsaturated free fatty acid alkyl esters. The residual unsaturated free fatty acid alkyl esters are separated from the saturated free fatty acid alkyl esters in the first fraction by chromatography. Preferred Components: The alkyl esters are ethyl esters. The blend of long chain saturated and unsaturated fatty acids is an oil selected from plant oils, animal oils and marine oils. The plant oil is selected from palm oil, rape seed oil, borage oil, flax oil and primrose oil. The plant oil is selected from either refined palm oil and refined rape seed oil; palm oil and refined palm oil; rape seed oil and refined rape seed oil; or borage oil, flax oil and primrose oil. The marine oil is seal oil or fish oil. The long chain unsaturated fatty acid alkyl esters are useful as a biodiesel fuel or as a enriched omega-3 fatty acids. The fatty acid alkyl esters are fatty acid ethyl esters. The blend of long chain saturated and unsaturated fatty acids is a transesterified oil selected from plant oils, animal oils and marine oils. The blend of long chain saturated and unsaturated fatty acids is a transesterified oil selected from rape seed oil and palm oil. The blend of long chain saturated and unsaturated fatty acids is a transesterified oil selected from borage oil, flax oil and primrose oil. The blend of long chain saturated and unsaturated fatty acids is a transesterified oil selected from seal oil and fish oil. EXAMPLE - Into a vessel was introduced refined soy oil (1000 g), powdered sodium hydroxide (180 g), water (440 g) and ethanol (2100 g) to form a first admixture. The first admixture was agitated for 1.5 hours at 60-65degreesC after which the first admixture cooled to approximately 25degreesC, an additional water (2000 g) was introduced, and acid was added to adjust the pH of the first admixture to 2-3. The cooled first admixture was separated by a three way centrifuge into a glycerine-enriched fraction, a free fatty acid (FFA)-enriched fraction and a waste fraction containing ethanol (95 wt.%), water, acid and the sodium salt formed as the reaction product of the sodium hydroxide and acid. The glycerine-enriched fraction was redirected for further processing into commercially saleable glycerine. The waste fraction was redirected for recovery and recycle. The FFA-enriched fraction was introduced into a second reaction vessel. Urea, dissolved in ethanol (95 wt.%) was added to the FFA-enriched fraction on the second reaction vessel at a urea to FFA ratio of 1:1 (wt./wt.) and a urea to solvent concentration of 40 wt./vol.% to form a second admixture. The second admixture was blended together and then allowed to stand for 4 hours at 20degreesC. The second admixture was then filtered to produce unsaturated free fatty acid (UFFA)-enriched filtrate and a saturated free fatty acid (SFFA)-enriched retentate containing SFFA and urea. The SFFA-enriched retentate was introduced into a first mixing vessel along with water (40000 g) to form a third admixture. The third admixture was blended together at 60degreesC until the urea was fully dissolved. The third admixture was then separated by centrifugation into an aqueous phase containing the urea, and an oil phase containing the SFFA. The aqueous phase was redirected for recovery and recycle. The oil phase was washed with acidified water and the washed SFFAs separated by chromatography to produce myristic acid, palmitic acid, stearic acid, oleic acid and additional recovered UFFAs. The UFFA-enriched filtrate was washed twice with acidified water (pH 3-4) and dried. The dried UFFA-enriched filtrate and the additional recovered UFFAs were introduced into a third reaction vessel along with ethanol (400 g) and sulfuric acid (50 g) to form a fourth admixture. The fourth admixture was agitated at room temperature for 1-2 hours until transesterification of the UFFAs was complete. Crude fatty acid methyl esters (FAMEs) were recovered from the fourth admixture and washed with a aqueous solution of sodium chloride (10 wt.%) at 50-60degreesC. The washed FAMEs were separated from the wash water by centrifugation and stored. Into a reaction vessel was introduced FAMEs (140 g) obtained by transesterification of soy oil, and urea (390 g) dissolved in ethanol (200 g) to form a first admixture. The first admixture was blended together and then allowed to stand for 4 hours at 20degreesC. The first admixture was then filtered to produce an UFAME-enriched filtrate and a SFAME-enriched solids containing SFAME and urea. The SFAME-enriched solids was introduced into a first mixing vessel along with water (450 g) to form a second admixture. The second admixture was blended together at 60degreesC until the urea was fully dissolved. The second admixture was then separated by centrifugation into an aqueous phase containing the urea, and an oil phase containing the SFAME. The aqueous phase was redirected for recovery and recycle. The oil phase was washed with acidified water and the washed SFAMEs separated by chromatography to produce purified methyl esters of myristic acid, palmitic acid, stearic acid, oleic acid and additional recovered unsaturated fatty acid methyl esters (UFAMEs). The UFAME-enriched filtrate was washed twice with acidified water (pH 3-4) and stored.