37results about How to "Reduce free fatty acid content" patented technology

A non-hydrogenated canola oil having superior oxidative stability and fry stability useful for food applications is disclosed, as well as seeds, plant lines and progeny thereof from which the oil is derived.

The invention belongs to the technical field of chemical industry, and particularly relates to a technique for synthesizing zinc stearate from glyceryl tristearate. The technique comprises the following steps: 1) hydrolyzing glyceryl tristearate and water under the actions of a catalyst and an antioxidant; and 2) adding zinc oxide and a catalyst in multiple steps, and carrying out condensation, dewatering and salification to synthesize the zinc stearate. By using the technique provided by the invention, no wastewater containing chlorine and sulfate ions is discharged in the process; the production process is safe and environment-friendly and has low total production cost; and the synthesized zinc stearate has the advantages of high yield, favorable color and low free fatty acid content, satisfies the relevant quality standard for Type I zinc stearate in HG / T3667-2012, and has higher practicality and comparability than like products in the market in practical application.

The invention discloses a method for reducing the free fatty acid content in marine phospholipids. The method for reducing the content of free fatty acids in marine phospholipids includes the step of converting free polyunsaturated fatty acids containing three or more double bonds in crude marine phospholipids into phospholipids. The method for reducing the content of free fatty acids in marine phospholipids increases the content of phospholipids while reducing the acid value, and also ensures the content of polyunsaturated fatty acids such as EPA and DHA, reduces the loss of fat-soluble vitamins and other components, and has a high degree of separation , and will not destroy the structure of phospholipids, improving the quality of the product.

The invention belongs to the field of biomass energy and particularly relates to a production method of glycerin fuel. The production method comprises the following steps: pretreating waste oil serving as a raw material, adding glycerin for reacting, and then adding lower carbon alcohol for carrying out ester exchange so as to obtain the glycerin fuel. According to the production method, the glycerin reacts with triacylglycerol and free fatty acid in the raw material oil so as to generate monoglyceride and diacylglycerol, so that the content of the free fatty acid in the raw material oil can be effectively reduced, so that the raw material oil can meet the requirements of production of the glycerin fuel through ester exchange reaction, and the waste acid water emission and pollution caused by conventional sulfuric acid catalyzed methanol esterification are avoided; in addition, and glycerin which is an ester exchange byproduct and cannot be used as fuel is converted into glycerol ketal ester which serves as pour point depressant to be mixed with fatty acid lower carbon alcohol ester, so that the condensation point of the glycerin fuel is reduced, and the cetane number of the fuel is increased.

The invention discloses a preparing method for epoxy fatty glyceride. The preparing method comprises the following steps that 1, esterase serves as a catalyst, glycerin serves as a reaction auxiliary, and fatty glyceride and hydrogen peroxide are subjected to an epoxidation reaction; 2, a reaction product is separated, and an oil phase is recovered, so that epoxy fatty glyceride is obtained. Epoxy fatty glyceride is not subjected to side reactions such as hydrolysis and glycerolysis, and therefore the yield of epoxy fatty glyceride is high. The product is single, the production process is easy to control, the product is easy to separate and recover, and the better economy and environmental-protection property can be achieved.