摘要:
The present invention provides a method for producing a saturated fatty acid and an unsaturated fatty acid, which comprises adding and mixing a polyglycerol ester of a fatty acid to a raw fatty acids mixture, cooling the resultant mixture to deposit crystals, and fractionating the saturated fatty acid and the unsaturated fatty acid, wherein a cooling procedure is performed at a cooling rate of 4null C./h or less when a supersaturation ratio is 60% or more and said cooling rate is varied during the cooling, and a glycerides mixture obtained from the fractionated unsaturated fatty acids. According to the present invention, a saturated fatty acid and an unsaturated fatty acid in a raw fatty acids mixture can be separated easily and efficiently by a dry fractionation process.
摘要:
Disclosed are a fatty acid esters composition of a polyglycerine containing more than 70% of a fatty acid monoester which is defined by a specified analysis method, a process for the preparation thereof, a process for the preparation of a highly purified fatty esters composition of a polyglycerine, and a highly-purified fatty acid esters composition of a polyglycerine having an oxirane oxygen concentration of below 100 ppm which is defined by a specified analysis method. The fatty acid esters compositions of a polyglycerine are useful as additives for a variety of food-stuffs, additives for a variety of thermoplastic resins, and as additives for a variety of cosmetics or detergents.
摘要:
A process for recovering 18-methyl eicosanoic acid (18-MEA) and/or alpha hydroxy acids (AHAs) from woolwax acids or derivatives thereof comprises the steps of heating the woolwax acids or derivatives thereof to 100null to 230null C. to form estolides and polymeric species; distilling to obtain a distillate (D1) and a residue (R1); and recovering 18-MEA from the distillate and/or recovering AHAs from the residue.
摘要:
The present invention relates to improved methods for refining vegetable oils. Vegetable oil is combined with organic acid and subjected to high shear to finely disperse the acid solution in the oil. The resulting acid-and-oil mixture is mixed at low shear for a time sufficient to sequester contaminants into a hydrated impurities phase, producing a purified vegetable oil phase.
摘要:
In refining crude vegetable oils, there are certain economic and quality advantages to refining the oils with potassium hydroxide. Lower overall cost is achieved from reduced levels of soap and trace impurities in the oil, improved refining yield for the oils refined with potassium hydroxide, higher retention of recoverable tocopherols in the oil, gentler reaction with triglyceride, lower mono and diglyceride in the potassium hydroxide soapstock, the option to convert a by-product of soapstock acidulation, into a profitable co-product and eliminate acid-water discharge from the soapstock acidulation process.
摘要:
The present invention is directed to a method of producing fuel from vegetable or animal fat having a free fatty acid content by means of catalytic esterification reactions. The method includes esterification of free fatty acids at a higher temperature in a vacuum with one or more multivalent alcohols accompanied by solid neutral catalysts, which are present in a packing bed inside a reactor, whereby the fat travels from top to bottom in the reactor with the alcohol(s) running counter current and a mixture containing alcohol and water being removed from an upper part of the reactor by means of a vacuum effect. The present invention is also directed to the apparatus for implementing the methods disclosed.
摘要:
This invention proposes a lanolin substitute, capable of absorbing up to at least twice its weight of water or aqueous solution or aqueous suspension. It forms true emulsions, stable over time with a capacity for water absorption superior to that of lanolin. It also possesses the known emollient, moisturizing and occlusive properties of lanolin. This substitute is usable in all the present and future areas of application of lanolin: in the cosmetics industry, dermatology, and in industrial applications (polishes, lubricants . . . ). It is obtained by hemi-synthesis from a mixture of unsaturated fatty acids, esters of unsaturated fatty acids, unsaturated hydrocarbons or unsaturated derivatives of the latter and compounds comprising or generating hydroxyl functions, such as glycerol, preferably without a catalyst and in an atmosphere devoid of oxygen. Classical thermal treatment or preferably treatment by dielectric heating.
摘要:
The present invention relates to a process for controlling the fatty acid chain composition of triglycerides wherein a feed stream comprises a mixture of triglycerides containing at least one long chain. Said mixture is substantially free of trishort chain triglycerides and it is treated in at least two fractionation steps to fractionate between long chain triglycerides at temperatures above 200null C. and pressures between 0.01 and 10 Pa, wherein one of said steps fractionates between trilong chain triglycerides and mono- and dilong chain triglycerides and the other one of said steps fractionates between monolong chain triglycerides and dilong chain triglycerides. The process can be used for the providing of target triglycerides having a controlled fatty acid chain distribution.
摘要:
A method of processing agricultural oil in which non-toxic reagents are used, so that a waste stream is evolved suitable for use as a nutrient source and wherein the non-toxic reagents include nutrient source and wherein the non-toxic reagents include nutrient components whereby the nutrient value of the waste stream is enhanced. A variation of convention refining is detailed in which potassium hydroxide is used as refining caustic instead of conventional sodium hydroxide. The resulting process exhibits improvements in waste wash characteristics, more complete oil recovery, less oil in the soapstock, reduced interlayer formation, more soap removed from the refined oil into the soapstock stream, and a less viscous soapstock.
摘要:
There is provided a process wherein a lower alkyl ester of a fatty acid derived from natural fats and oils and a lower alcohol containing 1 to 4 carbon atoms is produced in a lower sulfur content at lower costs without causing a reduction in yield and a deterioration in selectivity, as well as a process for producing an alcohol without reducing the activity of a catalyst. The process comprises the step of adsorption treatment of an ester with at least one adsorbent selected from clay and activated carbon. Further are provided a process for producing an ester which further comprises adsorption treatment with a hydrogenating decomposition-type adsorbent containing Ni and/or Cu, in hydrogen or a mixed gas atmosphere of hydrogen and an inert gas, and a process for producing an alcohol which comprises hydrogenation reaction with an ester produced by any one of these processes as the starting material.