Compositions and methods are provided for incorporating processed oils with high monoacylglyceride (MAG) content into products and food products. Methods are specifically provided for generating high MAG content processed oils.

A fluid composition comprises a triglyceride, having at least one alpha-branched fatty acid residue, wherein each alpha-branched fatty acid residue comprises at least one saturated or mono-unsaturated alkyl chain having a total number of carbon atoms ranging from 12 to 20, and wherein the triglyceride has at least one of (a) a flash point of at least 185 C., (b) a fire point of at least 230 C., (c) a pour point of 25 C. or lower, or (d) a combination thereof. The fluid composition may be useful, for example, as a dielectric fluid and/or as a heat transfer fluid in transformers and other electrical device applications.

A fluid composition comprises a triglyceride, having at least one alpha-branched fatty acid residue, wherein each alpha-branched fatty acid residue comprises at least one saturated or mono-unsaturated alkyl chain having a total number of carbon atoms ranging from 12 to 20, and wherein the triglyceride has at least one of (a) a flash point of at least 185 C., (b) a fire point of at least 230 C., (c) a pour point of 25 C. or lower, or (d) a combination thereof. The fluid composition may be useful, for example, as a dielectric fluid and/or as a heat transfer fluid in transformers and other electrical device applications.

The present invention relates to a method for preparing low-sulfur biodiesel. The method includes the following steps: subjecting raw crude oil to heat exchange, preheating, glycerol esterification reaction, flashing, cooling, transesterification, dealcoholization, sedimentation, and methyl ester rectification to obtain low-sulfur biodiesel up to the standard, where in the heat exchange process, the raw crude oil exchanges heat with flashed oil to recycle some heat, and glycerol and fatty acids in a distilled product subjected to flashing are reused for the glycerol esterification reaction; the dealcoholization process removes methanol in a system after the transesterification, and refined methanol recycled by methanol rectification is reused for the transesterification reaction; crude glycerol generated in the sedimentation process does not need to be treated and is directly used for glycerol rectification to obtain refined glycerol, and the refined glycerol is reused for the glycerol esterification reaction.

Methods and apparatus for economically producing a biodiesel product from feedstocks. Some embodiments comprise using at least one of a crude feedstock pretreatment process and a free fatty acid refining process prior to transesterification and the formation of crude biodiesel and glycerin. The free fatty acid refining process may include introducing the feedstock to glycerolysis to obtain a glycerolysis product then stripping the glycerolysis product to produce a fatty acid distillate and a stripped feedstock. The fatty acid distillate is recycled to the glycerolysis process to create more higher-molecular weight glycerides and the stripped feedstock (mostly di- and tri-glycerides) proceeds to transesterification to make biodiesel.

Methods and apparatus for economically producing a biodiesel product from feedstocks. Some embodiments comprise using at least one of a crude feedstock pretreatment process and a free fatty acid refining process prior to transesterification and the formation of crude biodiesel and glycerin. The free fatty acid refining process may include introducing the feedstock to glycerolysis to obtain a glycerolysis product then stripping the glycerolysis product to produce a fatty acid distillate and a stripped feedstock. The fatty acid distillate is recycled to the glycerolysis process to create more higher-molecular weight glycerides and the stripped feedstock (mostly di- and tri-glycerides) proceeds to transesterification to make biodiesel.

Provided is a fat or oil having a high diacylglycerol content and rich in -linolenic acid, in which crystallization at low temperature is suppressed, and which hardly causes white turbidity or deposition. Specifically, provided is a fat or oil composition, which satisfies the following (1) to (4): (1) a content of -linolenic acid in constituent fatty acids of a fat or oil is 40 mass % or more; (2) a total content of a saturated fatty acid having 16 carbon atoms and a saturated fatty acid having 18 carbon atoms in the constituent fatty acids of the fat or oil is 6 mass % or less, and a content of the saturated fatty acid having 18 carbon atoms in the constituent fatty acids of the fat or oil is less than 3 mass %; (3) a content mass ratio of the saturated fatty acid having 16 carbon atoms (P) to the saturated fatty acid having 18 carbon atoms (S) , [(P)/(S)], in the constituent fatty acids of the fat or oil is 0.1 or more and less than 3.5; and (4) a content of diacylglycerols is 25 mass % or more.

Provided is a fat or oil having a high diacylglycerol content and rich in -linolenic acid, in which crystallization at low temperature is suppressed, and which hardly causes white turbidity or deposition. Specifically, provided is a fat or oil composition, which satisfies the following (1) to (4): (1) a content of -linolenic acid in constituent fatty acids of a fat or oil is 40 mass % or more; (2) a total content of a saturated fatty acid having 16 carbon atoms and a saturated fatty acid having 18 carbon atoms in the constituent fatty acids of the fat or oil is 6 mass % or less, and a content of the saturated fatty acid having 18 carbon atoms in the constituent fatty acids of the fat or oil is less than 3 mass %; (3) a content mass ratio of the saturated fatty acid having 16 carbon atoms (P) to the saturated fatty acid having 18 carbon atoms (S) , [(P)/(S)], in the constituent fatty acids of the fat or oil is 0.1 or more and less than 3.5; and (4) a content of diacylglycerols is 25 mass % or more.

A method of producing a composition comprising a high concentration of very long chain polyunsaturated fatty acids (VLCPUFAs) from natural oils such as fish oil, squid oil, algal oil and krill oil. In addition, a composition comprising a high concentration of very long chain polyunsaturated fatty acids isolated from such natural sources; as well as to a process for isolating separate fractions of very long chain polyunsaturated fatty acids having identical chain lengths but different degrees of unsaturation from such highly concentrated compositions is disclosed.

A method of producing a composition comprising a high concentration of very long chain polyunsaturated fatty acids (VLCPUFAs) from natural oils such as fish oil, squid oil, algal oil and krill oil. In addition, a composition comprising a high concentration of very long chain polyunsaturated fatty acids isolated from such natural sources; as well as to a process for isolating separate fractions of very long chain polyunsaturated fatty acids having identical chain lengths but different degrees of unsaturation from such highly concentrated compositions is disclosed.