A process can be used for enzymatic preparation of sorbitan carboxylates. Sorbitan carboxylates are obtainable by this process.

A process can be used for enzymatic preparation of sorbitan carboxylates. Sorbitan carboxylates are obtainable by this process.

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.

An object of the present invention is to provide an enzyme showing random transesterification ability, which is suitable for food applications. Provided is a random transesterification lipase having high heat resistance in oils and fats.

Xylitol carboxylates are products of interest in the food and cosmetics industries. A process can be used for the enzymatic preparation of xylitol carboxylates.

Xylitol carboxylates are products of interest in the food and cosmetics industries. A process can be used for the enzymatic preparation of xylitol carboxylates.

The present disclosure discloses a method for increasing the usage efficiency of a lipase in the enzymatic reaction, belonging to the technical field of food processing. In the present disclosure, the peroxide value of raw materials required for enzymatic synthesis of a structured lipid is reduced by a distillation method or an adsorption method, and then the raw material and a lipase undergo catalytic reaction to synthesize the structured lipid, so as to maintain the activity of the lipase and increase the reuse rate of the enzyme. The distillation method includes deodorization and molecular distillation. The present disclosure provides a method for manufacturing a structured lipid by a high efficiency and low-cost enzymatic synthesis, addressing to the issues such as large enzyme consumption, expansive cost, low enzyme utilization rate in the traditional industrial production. Therefore, the method provided by the present disclosure has certain development potential and practical significance.

The present disclosure discloses a method for increasing the usage efficiency of a lipase in the enzymatic reaction, belonging to the technical field of food processing. In the present disclosure, the peroxide value of raw materials required for enzymatic synthesis of a structured lipid is reduced by a distillation method or an adsorption method, and then the raw material and a lipase undergo catalytic reaction to synthesize the structured lipid, so as to maintain the activity of the lipase and increase the reuse rate of the enzyme. The distillation method includes deodorization and molecular distillation. The present disclosure provides a method for manufacturing a structured lipid by a high efficiency and low-cost enzymatic synthesis, addressing to the issues such as large enzyme consumption, expansive cost, low enzyme utilization rate in the traditional industrial production. Therefore, the method provided by the present disclosure has certain development potential and practical significance.

The present invention concerns an enzymatic process for the preparation of an ingredient comprising 1,3-Olein-2-palmitin (OPO), the most abundant triglyceride present in human breast milk. This is achieved by using immobilized lipase from Ther-momyces lanuginosis for producing 1,3-olein-2-palmitin (1,3-Dioleate-2-palmitate-glycerol) using as substrate tripalmitin or triglycerides enriched in palmitic acid at SN-2 position by first alcoholysis in presence of C3 to C5 alcohol (butanol, pentanol, isopropanol) to produce 2-monopalmitin which is purified by selective crystallization at decreased temperature, followed by esterification using the same lipase and oleic acid.