The present invention relates to a method for preparing glyceride type polyunsaturated fatty acids. The method comprises: firstly mixing a basic catalyst with glycerol or a glyceride uniformly; then adding the mixture to a polyunsaturated fatty acid material slowly, and carrying out an esterification reaction under certain conditions to obtain glyceride type polyunsaturated fatty acids, wherein the basic catalyst is a lower aliphatic alcohol sodium/potassium or a solution thereof. The procedure of the process is simple, has mild reaction conditions, short reaction time, high yield and good quality of the obtained product.

The present invention relates to a method for preparing glyceride type polyunsaturated fatty acids. The method comprises: firstly mixing a basic catalyst with glycerol or a glyceride uniformly; then adding the mixture to a polyunsaturated fatty acid material slowly, and carrying out an esterification reaction under certain conditions to obtain glyceride type polyunsaturated fatty acids, wherein the basic catalyst is a lower aliphatic alcohol sodium/potassium or a solution thereof. The procedure of the process is simple, has mild reaction conditions, short reaction time, high yield and good quality of the obtained product.

A new process for enriching triterpene esters comprising: providing a mixture comprising a non-distilled vegetable oil and/or a non-distilled vegetable fat, further comprising triterpene esters, performing a mild transesterification with a lower alcohol, removing lower alcohol esters by deodorization, physical refining, evaporation or distillation, and recovering the remaining fraction rich in triterpene esters. Triterpene esters enriched with the method as well as uses of the same are also provided. One advantage is that it is a more economically viable way of achieving higher concentration of triterpene esters. There is both the chance to fully keep the natural distribution of triterpene esters but in the other end also to replace the natural level of cinnamic and acetic acids-triterpene esters with a high level of long fatty acid triterpene-esters.

A new process for enriching triterpene esters comprising: providing a mixture comprising a non-distilled vegetable oil and/or a non-distilled vegetable fat, further comprising triterpene esters, performing a mild transesterification with a lower alcohol, removing lower alcohol esters by deodorization, physical refining, evaporation or distillation, and recovering the remaining fraction rich in triterpene esters. Triterpene esters enriched with the method as well as uses of the same are also provided. One advantage is that it is a more economically viable way of achieving higher concentration of triterpene esters. There is both the chance to fully keep the natural distribution of triterpene esters but in the other end also to replace the natural level of cinnamic and acetic acids-triterpene esters with a high level of long fatty acid triterpene-esters.

This invention discloses a reaction system for producing fatty-acid alkyl esters using liquid film reactors, with countercurrent flow scheme based on the alcoholysis of fats and oils. Reaction system comprises a descending film reactor using semi-structured packing for generating interfacial area. It is fed through the bottom with oil or fat, and with a mixture containing alcohol, glycerol and catalyst through an intermediate stage. Products are a mixture of fatty-acid alkyl esters, alcohol and catalyst and alcohol, glycerol and catalyst, exit via the top and the bottom of the reactor, respectively. Volumetric packing fraction is between 2% and 50%, reaction temperature from 25 to 180° C., molar ratio alcohol to oil between 3:1 and 10:1, and CH3OH, NaOH, KOH, or their mixtures (0.5% to 3% based on the oil mass flow rate). Conversion and yield in a single reaction step are greater than 99.7% and 99.9%, respectively.

This invention discloses a reaction system for producing fatty-acid alkyl esters using liquid film reactors, with countercurrent flow scheme based on the alcoholysis of fats and oils. Reaction system comprises a descending film reactor using semi-structured packing for generating interfacial area. It is fed through the bottom with oil or fat, and with a mixture containing alcohol, glycerol and catalyst through an intermediate stage. Products are a mixture of fatty-acid alkyl esters, alcohol and catalyst and alcohol, glycerol and catalyst, exit via the top and the bottom of the reactor, respectively. Volumetric packing fraction is between 2% and 50%, reaction temperature from 25 to 180° C., molar ratio alcohol to oil between 3:1 and 10:1, and CH3OH, NaOH, KOH, or their mixtures (0.5% to 3% based on the oil mass flow rate). Conversion and yield in a single reaction step are greater than 99.7% and 99.9%, respectively.

The present invention pertains to a method of producing monoglyceride compositions having a low glycidol content. The invention furthermore pertains to such monoglyceride compositions which can be obtained by the method.

Provided is a method for producing an unsaturated fatty acid oxide (e.g. ω3 fatty acid oxide) that is new and has more beneficial features compared to conventional technologies. This method uses a lipoxygenase-containing composition (e.g. a lipoxygenase-containing composition derived from beans) as a lipoxygenase enzyme, and also uses a freezing method with organic solvent extraction. The present invention makes it possible to produce an unsaturated fatty acid oxide (e.g. ω3 fatty acid oxide) efficiently and at a low cost. The present invention also provides a pharmaceutical composition containing an ω3 fatty acid oxide isolated and purified by this method as an active ingredient.

Improved processes for making glyceride oligomers are generally disclosed herein. In some embodiments, the disclosed processes provide improved methods of using olefin metathesis to oligomerize unsaturated glycerides to make novel branched-chain polyester compositions. In some aspects, the disclosure also provides compositions formed by such processes.

Improved processes for making glyceride oligomers are generally disclosed herein. In some embodiments, the disclosed processes provide improved methods of using olefin metathesis to oligomerize unsaturated glycerides to make novel branched-chain polyester compositions. In some aspects, the disclosure also provides compositions formed by such processes.