7 results about "Enzymatic interesterification" patented technology

The invention discloses a lard liquid modification method based on enzymatic transesterification, and relates to the field of biochemistry, a solvent-free enzymatic transesterification reaction is adopted, lard and selected vegetable oil are mixed according to a preset mass ratio, and triacylglycerol molecular recombination is realized through a commercial lipase catalytic transesterification reaction. The modified lard oil is applied to food processing as a food base material or as a matrix of essence, perfume and lipophilic active molecules. The production process is simplified, the yield and stability of the liquid lard oil are improved, the problem that the lard oil is poor in flavor is solved, and the application market of the lard oil is widened.

The invention discloses a preparation method of zero-trans low-saturation high-beta'crystal form margarine, and belongs to the technical field of food processing. The method comprises the following steps: by taking camellia oil and palm stearin in a mass ratio of 7: 3 as base oil, adding 7.33% of immobilized lipase to carry out enzymatic transesterification, centrifuging to remove the lipase, adding 6% of glyceryl distearate to prepare base oil, mixing with 1% of sucrose fatty acid ester and 15% of water, emulsifying, quenching, kneading and curing to obtain a finished product. According to the invention, an enzymatic transesterification and oleogel dual structuring technology is adopted, and process parameters are accurately regulated and controlled, so that the product realizes zero trans-fatty acid residue, the saturation degree of transesterification grease is only 30.39%, the beta'crystal form proportion is high, and the caseinization property and the stability are excellent. The method is mild in process and easy to industrially popularize, and the prepared margarine can be widely applied to baked products such as cookies and bread and serves as an ideal substitute of animal butter.

The invention relates to the technical field of food, in particular to a preparation method of low-fishy-smell high-stability fish oil. The method comprises the following steps: mixing fish oil with coconut oil to obtain a mixed solution; and heating the mixed solution to 50-70 DEG C in a protective gas atmosphere, adding lipase, and placing in a high-voltage electrostatic field for a period of time to obtain the low-fishy-smell high-stability fish oil. In the method, a mixed solution of fish oil, coconut oil and lipase is subjected to enzymatic transesterification, and high-voltage electrostatic field treatment is performed, so that the fishy smell of the fish oil is effectively reduced, and the volatile flavor and the structural stability of the fish oil are improved.

This invention discloses a centimeter-scale biosynthesis system based on a macro-microreactor. A mixed solution containing acrylate monomers, initiators, RAFT reagents, and functional alcohols is reacted in a macro-microreactor loaded with immobilized enzymes to obtain functionalized polymers. This invention enables the simultaneous enzymatic transesterification and polymerization of acrylate polymers within the macro-microreactor. The macro-microreactor with internal components significantly shortens the RAFT polymerization time and improves the polymerization conversion rate. The macro-microreactor's characteristic scale reaches the centimeter level, enabling high-throughput synthesis. This invention provides a technical solution for the preparation of novel functionalized polyacrylate materials and has promising prospects for industrial application.

To provide an efficient process for making a final plant oil composition in which at least 50% of the total palmitic acid in the triglycerides of the final plant oil composition is present in the sn2 position.SOLUTION: Disclosed is a process comprising providing a starting vegetable oil composition comprising palmitic acid in triglyceride, performing an enzymatic transesterification process, and using excess free fatty acids and / or non-glyceride esters thereof obtained during the process and recycling them back into the process, wherein at least 70 wt.% of the total amount of palmitic acid in the starting vegetable oil composition is present in the final vegetable oil composition. Further disclosed is a vegetable oil composition obtainable by the disclosed process, the use of the vegetable oil composition in the manufacture of an infant formula, and an infant formula comprising the vegetable oil composition.SELECTED DRAWING: Figure 4

The invention discloses a preparation method of an OPO-containing grease composition, which comprises the following steps: A, preparing raw materials for later use, including coconut oil, sunflower seed oil, palm stearin and lipase; b, taking all sunflower seed oil and part of palm stearin; c, adding the sunflower seeds and palm stearin taken in the step B into a reaction kettle, vacuumizing, heating, mixing, dehydrating and degassing to obtain a grease mixture; d, cooling the grease mixture, adding all lipase to carry out enzymatic transesterification, then cooling and crystallizing, and filtering out crystals for later use; e, adding all coconut oil and the rest palm stearin into the filtrate, heating, mixing, carrying out enzymatic transesterification again, cooling, crystallizing, and filtering out crystals for later use; and F, mixing the crystal filtered out in the step E and the crystal obtained in the step D, and purifying. According to the method, the defects in the prior art can be overcome, and the content of OPO in the prepared triglyceride is increased on the premise that the preparation cost is not obviously increased.

The present invention relates to a process for producing a FAGE-based biofuel composition, the process being characterized by an enzymatic transesterification of fatty acid alkyl esters with glycerol formal. The invention is also directed to the biofuel composition obtained by said process as well as to the uses thereof.