Abstract: Processes for the enzyme-catalyzed production of triglycerides using polyunsaturated fatty acids, in which (a) the reaction of polyunsaturated fatty acids and/or C1-4 alkyl esters thereof with glycerol in vacuo in the presence of an immobilized enzyme to form their triglycerides is accelerated by addition of an additive from the group of weakly basic salts, complexing agents and ion exchangers and/or addition of a weakly basic salt and/or addition of an entraining agent in the form of a solvent or a gas and/or addition of glycerol-binding adsorbers and/or heat treatment of the partial glyceride intermediate product, (b) the immobilized enzymes are removed from the triglyceride by separation or filtration and (c) the remaining fatty acids and/or C1-4 alkyl esters thereof are removed from the triglyceride by distillation, refining or extraction.

Abstract: A composition comprising alkyl esters, with a C1-C8 alkyl group, and partial glycerides, with a free glycerol content of, at most, 2%, by weight, based on the weight of the composition, derived in an enzymatically-catalyzed reaction from saturated or unsaturated, straight or branched C8-C22 fatty acids of vegetable oils, and useful, inter alia, in biofuels, such as biodiesel, and as an additive for improving the lubricating performance of fuel compositions.

Abstract: A chemoenzymatic process for the production of fatty acid esters comprising partially esterifying one or more fatty acid esters, under mild temperatures with an enzymatic catalyst, and optionally in the presence of one or more inert solvents, with a 1- to 5-fold molar excess of one or more water-containing aliphatic alcohols with boiling points between 60° C. and 120° C., then removing the water and unreacted alcohol(s) from the resulting pre-esterification product, followed by additional esterification up to 99.7%, chemically-catalyzed with, e.g., an acid or tin salt at slightly higher temperatures, optionally using one or more inert solvents, with a 1- to 4-fold molar excess of the same one or more aliphatic alcohols as employed in the preliminary esterification step.

Abstract: The invention relates to structured lipid mixtures corresponding to formula (I): characterized in that R1CO, R2CO and R3CO independently of one another represent (i) linear saturated acyl groups containing 6 to 12 carbon atoms or (ii) the acyl group of conjugated linoleic acid (CLA) and/or an omega-3 or omega-6 fatty acid (OF), with the proviso that the quantity of CLA acyl groups amounts to 3 to 50 mol- % and the quantity of OF acyl groups to 5 to 25 mol- %, based on the quantity of acyl groups. The mixtures are preferably made by subjecting a mixture of component (a) a medium-chain triglyceride; and component (b) a CLA, an (OF), a TG-CLA (TG-OF) or a mixture thereof to enzymatic transesterification in the presence of a vegetable, marine or microbial oil.

Abstract: Processes for the enzyme-catalyzed production of triglycerides using polyunsaturated fatty acids, in which (a) the reaction of polyunsaturated fatty acids and/or C1-4 alkyl esters thereof with glycerol in vacuo in the presence of an immobilized enzyme to form heir triglycerides is accelerated by addition of an additive from the group of weakly basic salts, complexing agents and ion exchangers and/or addition of a weakly basic salt and/or addition of an entraining agent in the form of a solvent or a gas and/or addition of glycerol-binding adsorbers and/or heat treatment of the partial glyceride intermediate product, (b) the immobilized enzymes are removed from the triglyceride by separation or filtration and (c) the remaining fatty acids and/or C1-4 alkyl esters thereof are removed from the triglyceride by distillation, refining or extraction.

Abstract: A composition comprising alkyl esters, with a C1-C8 alkyl group, and partial glycerides, with a free glycerol content of, at most, 2%, by weight, based on the weight of the composition, derived in an enzymatically-catalyzed reaction from saturated or unsaturated, straight or branched C8-C22 fatty acids of vegetable oils, and useful, inter alia, in biofuels, such as biodiesel, and as an additive for improving the lubricating performance of fuel compositions.

Abstract: The invention describes a process for the production of glycerol of providing a vegetable oil or fat as starting material, obtaining crude glycerol from the vegetable oil or fat, and treating the crude glycerol with a reducing agent. The present invention also describes a process for the production of a medicament or pharmaceutical composition, the medicament or composition formed by combining glycerol and at least one pharmaceutically active ingredient. The present invention also describes a pharmaceutical composition or medicament composed of glycerol obtained by way of the invention and a pharmaceutically active ingredient, which compositions forms very little glyceraldehyde and dihydroxyacetone during storage.

Abstract: The invention relates to a process for the enzymatic synthesis of esters of polyunsaturated, short-chain or sensitive fatty acids with a high triglyceride content, which is made up of an enzymatic synthesis of the mixture of triglycerides and partial glycerides starting from free fatty acid, methyl or ethyl esters and glycerol, a subsequent selective enzymatic back-hydrolysis of the partial glycerides to fatty acid and glycerol and distillation-based separation of the triglycerides, and to the triglyceride-rich ester mixtures obtainable by this process. The process is preferably carried out as a one-pot process in the same reactor and in the presence of the same enzyme.

Abstract: The invention relates to structured lipid mixtures corresponding to formula (I): characterized in that R1CO, R2CO and R3CO independently of one another represent (i) linear saturated acyl groups containing 6 to 12 carbon atoms or (ii) the acyl group of conjugated linoleic acid (CLA) and/or an omega-3 or omega-6 fatty acid (OF), with the proviso that the quantity of CLA acyl groups amounts to 3 to 50 mol-% and the quantity of OF acyl groups to 5 to 25 mol-%, based on the quantity of acyl groups. The mixtures are preferably made by subjecting a mixture of component (a) a medium-chain triglyceride; and component (b) a CLA, an (OF), a TG-CLA (TG-OF) or a mixture thereof to enzymatic transesterification in the presence of a vegetable, marine or microbial oil.

Abstract: Processes for preparing conjugated linoleic acid are described wherein a conjugated linoleic acid lower alkyl ester is subjected to hydrolysis in the presence of an enzyme to form a hydrolyzate comprising a conjugated linoleic acid and a lower alkanol, wherein at least a portion of the lower alkanol is continuously removed; the hydrolyzate is separated into an organic phase and an aqueous/alcoholic phase; and the conjugated linoleic acid is separated from the organic phase.

Abstract: Processes for preparing fatty acids are described wherein a C4-C12 fatty acid methyl ester is subjected to hydrolysis in the presence of an enzyme to form an organic phase comprising a C4-C12 fatty acid and an aqueous phase comprising methanol, wherein at least a portion of the methanol is continuously removed; and the organic phase is subsequently separated from the aqueous phase, and optionally, where the organic phase further comprises an unhydrolyzed portion of the C4-C12 fatty acid methyl ester, the unhydrolyzed portion of the C4-C12 fatty acid methyl ester is separated from the C4-C12 fatty acid.

Abstract: Processes for preparing conjugated linoleic acid are described wherein a conjugated linoleic acid lower alkyl ester is subjected to hydrolysis in the presence of an enzyme to form a hydrolyzate comprising a conjugated linoleic acid and a lower alkanol, wherein at least a portion of the lower alkanol is continuously removed; the hydrolyzate is separated into an organic phase and an aqueous/alcoholic phase; and the conjugated linoleic acid is separated from the organic phase.

Abstract: Processes for the enzyme-catalyzed production of triglycerides using polyunsaturated fatty acids, in which (a) the reaction of polyunsaturated fatty acids and/or C1-4 alkyl esters thereof with glycerol in vacuo in the presence of an immobilized enzyme to form their triglycerides is accelerated by addition of an additive from the group of weakly basic salts, complexing agents and ion exchangers and/or addition of a weakly basic salt and/or addition of an entraining agent in the form of a solvent or a gas and/or addition of glycerol-binding adsorbers and/or heat treatment of the partial glyceride intermediate product, (b) the immobilized enzymes are removed from the triglyceride by separation or filtration and (c) the remaining fatty acids and/or C1-4 alkyl esters thereof are removed from the triglyceride by distillation, refining or extraction.

Abstract: Processes for the enzyme-catalyzed synthesis of triglycerides containing polyunsaturated fatty acids in which the synthesis is preceded by a pre-hydrolysis in which (a) C1-4 alkyl esters of polyunsaturated fatty acids are completely or partly hydrolyzed in vacuo with continuous addition of water or are partly hydrolyzed in several stages without vacuum, (b) after the hydrolysis, the water is removed by separation or distillation and (c) the synthesis of the polyunsaturated fatty acids with glycerol in vacuo in the presence of an enzyme to form their triglycerides is carried out under low-water conditions, (d) the enzymes are removed from the triglyceride by separation or filtration and (e) the remaining fatty acids and/or possible residues of C1-4 alkyl esters are removed from the triglyceride by distillation or refining; the pre-hydrolysis and the subsequent synthesis preferably being carried out as a one-pot process in the same reactor and in the presence of the same enzyme.