A method including reacting carboxylic acids obtained from fermentation and a carboxylic acid recovery step from said fermentation to produce short- or medium-chain triglycerides, wherein the reacting carboxylic acids comprises direct esterification with glycerol in the presence of a catalyst. Such method mentioned above wherein the produced short- or medium-chain triglycerides are further interesterified with an oil, butter, fat or other lipids in the presence of a catalyst to produce structured lipids. Yet another method comprising reacting carboxylic acids obtained from fermentation and a carboxylic acid recovery step from said fermentation to produce structured lipids, wherein reacting the carboxylic acids comprises transesterification with an oil, butter, fat or other lipids in the presence of a catalyst. The use of such short-chain triglycerides, medium-chain triglycerides and structured lipids as nutritional additives, dietary supplements, or both.

The present invention is in the field of oil processing, and specifically the present invention relates to a process of hydrolyzing an oil with high melting point, such as hydrogenated castor oil (HCO), by lipase. In an embodiment of the invention, there is provided a process of hydrolyzing an oil having a higher melting point to obtain a hydrolysis product, the process comprising: a step of mixing water, an organic solvent, and a lipase with the oil to form a mixture, and a step of hydrolyzing the oil in the mixture, wherein the lipase comprises one or more lipase derived from Thermomyces sp. but not any monoacylglycerol lipase or any lipase derived from Rhizomucor sp., and the organic solvent is any one selected from a sterically hindered alcohol, a non-polar organic solvent, and a mixture of a water-miscible organic solvent with a non-polar organic solvent.

The present invention is in the field of oil processing, and specifically the present invention relates to a process of hydrolyzing an oil with high melting point, such as hydrogenated castor oil (HCO), by lipase. In an embodiment of the invention, there is provided a process of hydrolyzing an oil having a higher melting point to obtain a hydrolysis product, the process comprising: a step of mixing water, an organic solvent, and a lipase with the oil to form a mixture, and a step of hydrolyzing the oil in the mixture, wherein the lipase comprises one or more lipase derived from Thermomyces sp. but not any monoacylglycerol lipase or any lipase derived from Rhizomucor sp., and the organic solvent is any one selected from a sterically hindered alcohol, a non-polar organic solvent, and a mixture of a water-miscible organic solvent with a non-polar organic solvent.

A method for enzymatically preparing a n-3 polyunsaturated fatty acid diacylglycerol using oil rich in n-3 polyunsaturated fatty acid as raw material to prepare diacylglycerol oil with selective enzymatic hydrolysis. Before the enzymatic reaction, the raw materials are homogenized to improve the catalytic efficiency of lipase in the hydrolysis and achieve the purpose of reducing the reaction time and the addition amount of lipase. As a result, the cost of industrial diacylglycerol preparation is reduced, ultimately reducing the cost of industrial diacylglycerol preparation. Therefore, the present invention provides an effective, mild and low-cost enzymatic method for preparing diacylglycerol rich in n-3 polyunsaturated fatty acids, which has a promising potential for industrial application.

The present invention provides a lipase powder composition which comprises a filter aid(s) and a product obtained by pulverizing a Thermomyces sp.-derived lipase immobilized to a silica carrier(s) into the average particle diameter of 1 m or more and less than 300 m. This lipase powder composition improves the lipase activity and operability and, therefore, can be suitably used in the methods for exchanging esters of fats and oils and for esterification.

A method for synthesizing diacylglycerol, comprising the following steps: (1) mixing an oil, a lipase and a solvent, and carrying out a hydrolysis reaction to obtain a hydrolyzate; and (2) under the action of a diacylglycerol lipase, performing an esterification reaction on the hydrolyzate obtained in step (1) with glycerol; the lipase in step (1) is lipase MAS1 or MAS1-H108A.

A method for synthesizing diacylglycerol, comprising the following steps: (1) mixing an oil, a lipase and a solvent, and carrying out a hydrolysis reaction to obtain a hydrolyzate; and (2) under the action of a diacylglycerol lipase, performing an esterification reaction on the hydrolyzate obtained in step (1) with glycerol; the lipase in step (1) is lipase MAS1 or MAS1-H108A.

The present invention discloses an enzymatic synthesis method of 1-palmitic acid-2-oleic acid-3-triglyceride stearate, belonging to the technical field of structured lipid processing. In the present invention, a crude product rich in 1-palmitic acid-2-oleic acid-3-triglyceride stearate is obtained by reacting for 2-10 h at 20-70 C. with 1-palmitic acid-2-diglyceride oleate as an acyl acceptor, stearic acid or a derivative thereof as an acyl donor and a lipase as a catalyst, wherein the reaction system is an inorganic or organic solvent reaction system. The present invention provides a highly efficient enzymatic synthesis method of POS, thereby resolving the disadvantage of low POS content and limited use provided by the current synthesizing product of structured lipid. The technology adopted by the present invention certainly has an application prospect in the process of preparing cocoa butter equivalents.

The present invention discloses an enzymatic synthesis method of 1-palmitic acid-2-oleic acid-3-triglyceride stearate, belonging to the technical field of structured lipid processing. In the present invention, a crude product rich in 1-palmitic acid-2-oleic acid-3-triglyceride stearate is obtained by reacting for 2-10 h at 20-70 C. with 1-palmitic acid-2-diglyceride oleate as an acyl acceptor, stearic acid or a derivative thereof as an acyl donor and a lipase as a catalyst, wherein the reaction system is an inorganic or organic solvent reaction system. The present invention provides a highly efficient enzymatic synthesis method of POS, thereby resolving the disadvantage of low POS content and limited use provided by the current synthesizing product of structured lipid. The technology adopted by the present invention certainly has an application prospect in the process of preparing cocoa butter equivalents.

A method of preparing monoglycerides from fermentation-derived carboxylic and acids includes esterifying the fermentation-derived carboxylic acids with glycerol to produce the monoglycerides, wherein the monoglycerides are short-chain monoglycerides, medium-chain monoglycerides, or a combination of any two or more thereof.