measurement of the color produced by the 

 ferric hydroxamate complex. 



Lips, H.J. 



1953. Observations on the determination 

 of iodine value with pyridine sulfate di- 

 bromide. Journal of the American Oil 

 Chemists Society, 30: 399-403. Chem - 

 ical Abstracts, 47: 12843b (1953). 

 A study of the effects of variables (reac- 

 tion time, reagent concentration, catalyst, 

 solvent, peroxides, and sulfur) on iodine 

 values determined by the pyridine sulfate 

 dibromide method of Benham and Klee ( Jour - 

 nal of the American Oil Chemists Society , 

 27: 127-130, 1950). 



Lipsky, S. R. andR. A. Landowne 



1959. Evaluation of a stationary phase 

 for fatty acid analysis by gas -liquid 

 ■if chromatography. Annals of the New 



# York Academy of S.:iences, 72 (arti- 



cle 13): 666-674. 

 The saturated and unsaturated fatty acids 

 of chain length C]^2'*-'26 were quickly sepa- 

 rated on a diethylene glycol -succinate poly- 

 ester column by gas chromatography. 



Lipsky, S.R., R. A. Landowne, and 

 J. E. Lovelock 



1959. Separation of lipides by gas -liquid 

 . chromatography. Analytical Chemistry , 



* 3J.: 852-856. 



A method is described for separation of 

 methyl esters of fatty acids to C22 by gas- 

 liquid chromatography on a capillary column 

 coated with Apiezon L, using an argon de- 

 tector . The minimum amount of organic 

 vapor detectable by the method is approxi- 

 mately 10"^^ mole. 



Long, C. and D. A. Staples 



1959. Determination of neuraminic acid 

 in crude brain lipids. Biochemical Jour - 

 nal, 73: 385-389. 

 Brain tissue lipids were extracted with 

 CHCl3-MeOH (2:1) and partitioned according 

 to Folch, et al (Journal of Biological Chem- 

 istry, 226: 497, 1957). The neuraminic acid 

 content of the aqueous methanol phase was 

 determined by measuring the extinction 

 value of the orcinol reaction products before 



• 



▲ 



and after treatment of the sample with acid. 

 A discussion of the method is given. 



Lovern, J. A. 



1950. Estimation of choline as the 



reineckate. Chemistry and Industry, 



A p. 707. Chemical Abstracts, 45:34481(1951). 



The method of Marenzi and Cardial (Jour - 

 nal of Biological Chemistry, 147: 363, 1943) 

 for the oxidative determination of choline 

 reineckate will give more stable results if 

 the acetone is evaporated from the reineckate 

 precipitate prior to oxidation. 



Lovern, J. A. 



1952. The application of counter -current 

 distribution to the separation of phos- 

 pholipins . Biochemical Journal, 51^: 

 464-470. 



In an aqueous ethanol -petroleum ether 

 system, the separation of phosphatidyl- 

 choline from ethanolamine and serine phos- 

 pholipids was fair, but separation of phos- 

 phatidyl ethanolamine from phosphatidyl 

 serine was poor . 



Lovern, J, A. and J. OUey 



1953. The lipids of fish. 2. The acetone- 

 , soluble lipids in the flesh of the haddock. 



Biochemical Journal, 54: 128-137. 

 The acetone -soluble lipids are fractionated 

 by precipitation with acetone at 0° from an 

 ether or chloroform solution . The soluble 

 portions were fractionated further by counter- 

 current distribution between petroleum ether 

 and 85% ethanol. 



Lovern, J . A . and J . OUey 



1953. The lipids of fish. 4. The lipids 

 extracted by an ethanoLether mixture 

 from haddock flesh previously extracted 

 with acetone . Biochemical Journal, 55: 

 686-696. 

 An ethanol-ether (3:1) extract of haddock 

 flesh which had been extracted previously 

 with acetone was reextracted with petroleum 

 ether. The petroleum ether extract was 

 washed and the component lipids were frac- 

 tionated by counter -current distribution be- 

 tween petroleum ether and 85% ethanol . 



44 



