Determination of Fatty Acid Monoesters ofl-Ascorbic andd-Isoascorbic Acids in Fats and Oils

1944 ◽  
Vol 16 (7) ◽  
pp. 464-465 ◽  
Author(s):  
Jack. Turer ◽  
R M. Speck
Keyword(s):  
Fatty Acid ◽  
Fats And Oils

Automated determination of fatty acid methyl ester and cis/trans methyl ester composition of fats and oils

2001 ◽  
Vol 922 (1-2) ◽  
pp. 391-397 ◽  
Author(s):  
Sjaak de Koning ◽  
Bram van der Meer ◽  
Geert Alkema ◽  
Hans-Gerd Janssen ◽  
Udo A.Th Brinkman
Keyword(s):  
Fatty Acid ◽  
Methyl Ester ◽  
Fatty Acid Methyl Ester ◽  
Acid Methyl Ester ◽  
Fats And Oils ◽  
Acid Methyl ◽  
Trans Methyl ◽  
Automated Determination

Determination of Dimers and Polymers in Heated Fats and Oils by Sublimation

1969 ◽  
Vol 52 (5) ◽  
pp. 958-963
Author(s):  
Anita Huang ◽  
David Firestone
Keyword(s):  
Fatty Acid ◽  
Fatty Acid Methyl Esters ◽  
Methyl Esters ◽  
Fats And Oils ◽  
Dimer Acid ◽  
Fresh Vegetable ◽  
Oxidized Oil ◽  
Acid Methyl ◽  
Common Fatty Acid

Abstract A sublimation procedure is described for separating dimers and polymers from oxidized or polymerized fats and oils. Under the described conditions, involving sublimation at 90°C and 0.02–0.05 mm Hg pressure, common fatty acid methyl esters standards yielded 99–2100% sublimate, methyl esters of commercial vegetable oils yielded 97.4-99.2% sublimate, heated cottonseed oils yielded 64–83% sublimate, a thermal dimer acid yielded 1.0% sublimate, and laboratory-prepared oxidative dimers and polymers yielded 7.5% sublimate. A comparison of the sublimation procedure with urea adduction gave good correlations with thermally oxidized oil samples; however, with fresh vegetable oil or with samples consisting of predominantly thermal or oxidative dimers, sublimation gave more accurate results than urea adduction.

A Procedure for the Simultaneous Quantitative Determination of Glycerol and Fatty Acid Contents of Fats and Oils.

1964 ◽  
Vol 36 (3) ◽  
pp. 587-590 ◽  
Author(s):  
M. E. Mason ◽  
M. E. Eager ◽  
G. R. Waller
Keyword(s):  
Fatty Acid ◽  
Quantitative Determination ◽  
Fats And Oils
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