Methyl Ethyl Ketone
CAS：78-93-3
Cyclohexanone
CAS：108-94-1
Acetone
CAS：67-64-1
Acetic Acid
CAS：64-19-7
Ethyl Acetate
CAS：141-78-6
Toluene
CAS：108-88-3
Benzene
CAS：71-43-2
Ethanol
CAS：64-17-5
Methanol
CAS：67-56-1
acetone insoluble matter in lecithin
Direct characterization of commercial lecithins by easy aient …
1/12/2012· The acetone insoluble matter (AI) and the phosphorus (P) content are related to the proportion of PL on the lecithin samples ( Table 1 ). The SOLEC™ F sample contains high levels of AI matter and (P) content, indiing therefore that the deoiled process was used in its preparation. Table 1.
Lecithin AOCS methods - Big Chemical Encyclopedia
The amount of acetone-insoluble matter (%A1) is a measure of the polar material found in lecithin. In soybean lecithin, the acetone-insolubles typically contain 70-75% phospholipids, with the remaining portion consisting of glycolipids, carbohydrates, and …
Photometric Determination of Acetone-Insoluble Material in …
Photometric Determination of Acetone-Insoluble Material in Soybean Oil Chas. Andrew Murray and E. B. Oberg Cite this: Ind. Eng. Chem. Anal. Ed. 1942, 14, 10, 785–787 Publiion Date (Print): October 1, 1942 Publiion History Published online 1 May 2002
A convenient method for lecithin purifiion from fresh eggs
Lecithin crude extract preparation (CE) Sixty fresh egg yolks (ca. 800 g) were separated, carefully washed with water and passed through a sieve to remove the meranes. 2 L of cold acetone (4 ºC) were added to the yolk suspension and the mixture was homogenized with a mechanical homogenizer equipped with a glass helix during 5 min.
US4164594A - Lecithin based wetting agent - Google Patents
The wetting agent comprises oil-free granular phosphatides containing at least 95% acetone insoluble matter dissolved in an oil which has a bland taste, a maximum iodine value of 2.0 and which is a liquid at temperatures as low as about 0 C. US4164594A
Lecithins acetone-insoluble - Big Chemical Encyclopedia
The total acetone insolubles content of commercial acetylated lecithin products can vary from about 52% to about 97%, the remainder being soybean oil (or another food-grade triglyceride …
Factors influencing the determination of the acetone insolubles of commercial lecithins …
A proposal is made for the consideration of a direct weighing procedure for the acetone insolubles content of commercial lecithins whereby petroleum ether is eliminated, the acetone extract solution saturated with pure phosphatides before use, and the insoluble residue dried and weighed. Citing Literature Volume30, Issue10 October 1953 Pages408-410
Modified lecithin for asphalt appliions
Eodiments of the present invention provide a method, comprising obtaining a lecithin-containing material, in some aspects derived from a crude refining stream, comprising 20-80 wt % acetone insoluble matter, 1-30 wt % free fatty acid, and less than 10 wt acid
Production of acetylated lecithin - AGRIS
6 percent, and pH of 7.75 and 7.80, respectively, and had decreasing acid value. Sodium hydroxide was found to be the best alkaline for adjusting pH since it increased only a little value of hexane insoluble matter. The acetylated lecithin from soybean had dark yellow color while that from rice bran had dark brown color.
US Patent Appliion for LECITHIN DRYING USING FATTY …
1/6/2022· Lecithin contains at least 50% of acetone insoluble matter. “Phosphatides” include phosphatidic acid, phosphatidylinositol, phosphatidylethalnolamine, phosphatidylcholine, and other phospholipids. “Reaction” utilized herein primarily refers to the physical reaction of drying and the blending of lecithin-containing material and a fatty acid source.
Factors influencing the determination of the acetone insolubles of commercial lecithins …
Data are presented from numerous analyses of commercial lecithins for the comparison of values obtained from the determination of acetone insolubles by a direct weighing method against those by the A
Lecithin (soya)
1/1/2022· Lecithin (soya) - Trait This product is yellow to brown semi-solid, block body. This product is soluble in ether and ethanol, insoluble in acetone. acid value The acid value of this product should not be greater than 3 0 (General Rule 0 7 1 3). iodine value The iodine value of this product should not be less than 75 (General 0713).
Method of Analysis for Acetone : Pharmaguideline
Learn how to analyze the Acetone in pharmaceuticals including Distilling Range, Water content, Residue on evaporation, Reducing substances, Matter insoluble in water and Relative density. Methanol: Not more than 0.05%2-Propanol: Not more than 0.05% Other
Methods Search - AOCS
Ja 2b-87 Moisture in Lecithin, Karl Fischer Method Ja 3-87 Hexane-Insoluble Matter in Vegetable Lecithins Ja 4-46 Acetone-Insoluble Matter in Vegetable Lecithins Ja 5-55 SURPLUS Total Phosphorus in Lecithin Ja 6-55 Acid Value of Vegetable Lecithins Ja 7-86
Final Report on the Safety Assessment of Lecithin and Hydrogenated Lecithin …
acetone-insolublephosphatides,including“trueLecithin”(phos phatidylcholines)andcephalin,withothersubstancessuchas carbohydrates,glycerideoils,andsterolsthatoccurwiththe
Types of Phospholipids Phospholipid Research Center
It contains not less than 50% of acetone-insoluble matter.” Unfortunately, especially in the American literature, lecithin is also used as a synonym of phosphatidylcholine, which is the pure compound. Descriptions of the phospholipid component in products as “lecithin” leaves open which lipid is used.
Enzymatic preparation and characterization of soybean lecithin …
lecithin Concentrated soybean lecithin was character-ized in terms of acetone-insoluble matter, hexane-insoluble matter, humidity (moisture content) and acid value according to the AOCS official meth-ods (Ja 4–46, Ja 3–87, Ja 2b–87, Ja 6–55) (AOCS,
Effect of degumming conditions on removal and quality of soybean lecithin …
Under our experimental conditions, the optimal conditions with respect to phosphorus removal, lecithin color and acetone-insoluble content are estimated to be: time-short (15 min); agitation-moderate to rapid (400 rpm); temperature-60 C; water concentration-2% or an amount close to the phosphatide content of the crude oil.
Lecithin (soya)
1/1/2022· Lecithin (soya) - Trait This product is yellow to brown semi-solid, block body. This product is soluble in ether and ethanol, insoluble in acetone. acid value The acid value of this product should not be greater than 3 0 (General Rule 0 7 1 3). iodine value The iodine value of this product should not be less than 75 (General 0713).
Factors influencing the determination of the acetone insolubles of …
A proposal is made for the consideration of a direct weighing procedure for the acetone insolubles content of commercial lecithins whereby petroleum ether is eliminated, the acetone extract …
Lecithin analysis - Big Chemical Encyclopedia
Eor example, the AOCS Ja 4-46 method determines the acetone-insoluble matter under the conditions of the test, free from sand, meal, and other petroleum ether -insoluble material. The phosphoHpids are included in the acetone-insoluble fraction. The substances insoluble in hexane are determined by method AOCS Ja 3-87. [Pg.103]
Lecithin - an overview ScienceDirect Topics
Lecithin (phosphatidylcholine) is, along with cholesterol and bile acids, the third major lipid constituent in bile. It is formed in the hepatocyte from phosphatidyl ethanolamine and three methyl groups borrowed from s-adenosylmethionine, and is the major endogenous source of …
Composition of Soybean Lecithin - Soy Lecithin Supplier in China
27/10/2021· Some sterol glycosides and free carbohydrates, as well as sugars bound to lipid constituents, remain with the acetone-insoluble phospholipids. At our laboratory (22), one sample of oil-free phosphatides was found to contain 7% free sugars made up of 45% sucrose, 9% raffinose, and 47% stachyose. PHOSPHOLIPID COMPONENTS
NF Monographs: Lecithin
» Lecithin is a complex mixture of acetone-insoluble phosphatides, which consist chiefly of phosphatidyl choline, phosphatidyl ethanolamine, phosphatidyl serine, and phosphatidyl …
Methods Search Results - AOCS
Acetone-Insoluble Matter in Vegetable Lecithins DEFINITION This method determines the acetone-insoluble matter under the conditions of the test, free from sand, meal, and other …
The use of natural and synthetic phospholipids as pharmaceutical …
25/8/2014· lecithin is described, e.g., in the united states pharmacopoeia (usp) as a “complex mixture of acetone-insoluble phosphatides, which consists chiefly of pc, pe, phosphatidylserine, and phosphatidylinositol, coined with various amounts of other substances such as triglycerides, fatty acids, and carbohydrates, as separated from the crude …
Acetone insolubles - Big Chemical Encyclopedia
The Japanese Monograph (ISCI-II) (23) specifies a slightiy lower acetone-insoluble matter and a lower heavy-metal content. [Pg.103] The standard methods (26) of analysis for commercial lecithin, as eodied in the Official and Tentative Methods of the American Oil Chemists Society (AOCS), generally are used in the technical evaluation of lecithin (27).
Lecithin (soya)
1/1/2022· Lecithin (soya) - Trait This product is yellow to brown semi-solid, block body. This product is soluble in ether and ethanol, insoluble in acetone. acid value The acid value of this product should not be greater than 3 0 (General Rule 0 7 1 3). iodine value The iodine value of this product should not be less than 75 (General 0713).
Lecithins and Phospholipids - American Lecithin Company
emulsifier in lecithin. PC is the major component of biological meranes and supplements the diet with natural choline. Acetone Insolubles (AI) Expressed as a percentage. This is a …
Soybean lecithin: Acetone insoluble residue fractionation and …
1/7/2002· Abstract The acetone insoluble residue was isolated from soybean lecithin. This residue was solvent fractionated resulted in four fractions, namely, acetic acid soluble, acetic …
Assay Not less than 60% of acetone-insoluble matter (phosphatides) DESCRIPTION Consistency of both natural grades and refined grades may vary from plastic to fluid, depending upon free …
» Lecithin is a complex mixture of acetone-insoluble phosphatides, which consist chiefly of phosphatidyl choline, phosphatidyl ethanolamine, phosphatidyl serine, and phosphatidyl …
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