Zobrazeno 1 - 10
of 84
pro vyhledávání: '"Alan J. Sheppard"'
Autor:
Alan J. Sheppard, Carol M. Weaver, Roger G. O'Dell, Gerald Angyal, Martin P. Bueno, Jeanne I. Rader
Publikováno v:
Food Chemistry. 54:419-427
The new definition of total fat in FDA regulations implementing the Nutrition Labeling and Education Act of 1990 necessitates the quantitation of all lipid fatty acids and the summation of their triglyceride equivalents. A gas-liquid Chromatographic
Autor:
George V. Vahouny, Satchithanandam Subramanian, Truc Le, Alan J. Sheppard, Isabel S. Chen, Marie M. Cassidy
Publikováno v:
Lipids. 22:318-321
Rat mesenteric lymph chylomicrons containing triglycerides enriched with either [14C]oleic acid (OA) or [14C]-eicosapentaenoic acid (EPA) were prepared by ultracentrifugation of lymph samples collected for 6 hr after a single duodenal infusion of an
Autor:
John L Iverson, Alan J. Sheppard
Publikováno v:
Journal of Chromatographic Science. 13:505-508
Autor:
John L Iverson, Alan J. Sheppard
Publikováno v:
Food Chemistry. 21:223-234
Substituting n -butanol for the methanol specified in the AOAC Official methods of analysis (sections 28.056–28.059) yields the butyl esters of the fatty acids with complete recovery of the volatile short-chain acids. Fatty acid butyrates can be de
Publikováno v:
Journal of AOAC INTERNATIONAL. 60:895-898
The Canadian FA-59 enzymatic method for determining cis,cis-methylene interrupted polyunsaturated fatty acids has been modified to meet the needs of the cholesterol and fatty acid regulations of the U.S. Food and Drug Administration. A centrifugation
Autor:
Parvin Yasaei, William C. Brumley, Theodore S. Rudolf, James A Sphon, Alan J. Sheppard, Chih-Shang J Shen
Publikováno v:
Journal of AOAC INTERNATIONAL. 68:701-709
Electron ionization mass spectrometry (MS) of sterol butyrates is ' described. Fragmentation of common sterol butyrates is related to structure and is discussed in relation to the fragmentation of free sterols I and of commonly used sterol derivative
Autor:
Alan J. Sheppard, David R. Newkirk
Publikováno v:
Journal of AOAC INTERNATIONAL. 64:54-57
A high pressure liquid chromatographic method that uses the benzoate ester of cholesterol has been developed for the measurement of cholesterol in foods. A 300 × 3.9 mm id μBondapak C18 column and a variable wavelength ultraviolet detector are used
Publikováno v:
Poultry Science. 59:1455-1459
An experiment was conducted to determine the effects of feeding Lunaria oil to chicks. A diet containing Lunaria oil produced poorer growth and lower feed conversion than one containing corn oil. White Plymouth Rock chicks had apparent digestibility
Autor:
John L Iverson, Alan J. Sheppard
Publikováno v:
Journal of AOAC INTERNATIONAL. 60:284-288
Butter oil is extracted from butter with hexane, using a rolling boil technique. The resulting 10% butter oil in hexane is converted to butyl esters, using butanol in place of methanol as specified in the official final action method, 28.063–28.067
Publikováno v:
Journal of AOAC INTERNATIONAL. 60:1302-1306
A gas-liquid chromatographic (GLC) method, using the butyryl esters of sterols, has been developed for the measurement of cholesterol, stigmasterol, sitosterol, and campesterol in foods. An immobile phase of 1 % SE-30 coated on 100–120 mesh Gas-Chr