Search Results - "Yurawecz, Martin P"

Methods for analysis of conjugated linoleic acids and trans-18:1 isomers in dairy fats by using a combination of gas chromatography, silver-ion thin-layer chromatography/gas chromatography, and silver-ion liquid chromatography by Cruz-Hernandez, C, Deng, Z, Zhou, J, Hill, A.R, Yurawecz, M.P, Delmonte, P, Mossoba, M.M, Dugan, M.E.R, Kramer, J.K.G

“…Conjugated linoleic acids (CLA) are octadecadienoic acids (18:2) that have a conjugated double-bond system. Interest in these compounds has expanded since CLA…”
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Mammary lipogenic enzyme activity, trans fatty acids and conjugated linoleic acids are altered in lactating dairy cows fed a milk fat-depressing diet by Piperova, L S, Teter, B B, Bruckental, I, Sampugna, J, Mills, S E, Yurawecz, M P, Fritsche, J, Ku, K, Erdman, R A

“…The objectives of the present study were to examine the effect of a milk fat-depressing (MFD) diet on: 1) the activity of mammary acetyl-CoA carboxylase (ACC)…”
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Identification and Characterization of Conjugated Fatty Acid Methyl Esters of Mixed Double Bond Geometry by Acetonitrile Chemical Ionization Tandem Mass Spectrometry by Michaud, Anthony L, Yurawecz, Martin P, Delmonte, Pierluigi, Corl, Benjamin A, Bauman, Dale E, Brenna, J. Thomas

“…Fatty acids with conjugated double bonds have attracted great interest because of their reported potent bioactivities. However, there are currently no rapid…”
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Silver-ion high-performance liquid chromatographic separation and identification of conjugated linoleic acid isomers by Sehat, N, Yurawecz, M.P, Roach, J.A.G, Mossoba, M.M, Kramer, J.K.G, Ku, Y

“…This is the first report of the application of silverion impregnated high‐performance liquid chromatography (Ag+‐HPLC) to the separation of complex mixtures of…”
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Distributions of conjugated linoleic acid (CLA) isomers in tissue lipid classes of pigs fed a commercial CLA mixture determined by gas chromatography and silver ion-high-performance liquid chromatography by Kramer, J.K.C, Sehat, N, Dugan, M.E.R, Mossoba, M.M, Yurawecz, M.P, Roach, J.A.G, Eulitz, K, Aalhus, J.L, Schafer, A.L, Ku, Y

“…Pigs were fed a commercial conjugated linoleic acid (CLA) mixture, prepared by alkali isomerization of sunflower oil, at 2% of the basal diet, from 61.5 to 106…”
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Identification of conjugated linoleic acid isomers in cheese by gas chromatography, silver ion high performance liquid chromatography and mass spectral reconstructed ion profiles. Comparison of chromatographic elution sequences by Sehat, N. (U.S. Food and Drug Administration, Washington, DC.), Kramer, J.K.G, Mossoba, M.M, Yurawecz, M.P, Roach, J.A.G, Eulitz, K, Morehouse, K.M, Ku, Y

“…Commercial cheese products were analyzed for their composition and content of conjugated linoleic acid (CLA) isomers. The total lipids were extracted from…”
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Trans, saturated, and unsaturated fat in foods in the United States prior to mandatory trans-fat labeling by Satchithanandam, S, Oles, C.J, Spease, C.J, Brandt, M.M, Yurawecz, M.P, Rader, J.I

“…On July 11, 2003, the U.S. Food and Drug Administration published a final rule amending its food‐labeling regulations to require that trans FA be declared in…”
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Improved separation of conjugated fatty acid methyl esters by silver ion-high-performance liquid chromatography by Sehat, N, Rickert, R, Mossoba, M.M, Kramer, J.K.G, Yurawecz, M.P, Roach, J.A.G, Adlof, R.O, Morehouse, K.M, Fritsche, J, Eulitz, K.D

“…Operating from one to six silver ion‐high‐performance liquid chromatography (Ag+‐HPLC) columns in series progressively improved the resolution of the methyl…”
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A new conjugated linoleic acid isomer, 7 trans, 9 cis-octadecadienoic acid, in cow milk, cheese, beef and human milk and adipose tissue by Yurawecz, M.P. (U.S. Food and Drug Administration, Washington, DC.), Roach, J.A.G, Sehat, N, Mossoba, M.M, Kramer, J.K.G, Fritsche, J, Steinhart, H, Ku, Y

“…The identity of a previously unrecognized conjugated linoleic acid (CLA) isomer, 7 trans, 9 cis‐octadecadienoic acid (18∶2) was confirmed in milk, cheese,…”
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Overview of infrared methodologies for trans fat determination by Mossoba, M.M, Yurawecz, M.P, Delmonte, P, Kramer, J.K.G

“…trans Fatty acids are present in a variety of foods like dairy products, but the major sources are products that contain commercially hydrogenated fats. Some…”
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Improved identification of conjugated linoleic acid isomers using silver-ion HPLC separations by Delmonte, P, Yurawecz, M.P, Mossoba, M.M, Cruz-Hernandez, C, Kramer, J.K.G

“…Silver-ion high-performance liquid chromatography (Ag(+)-HPLC) has been shown to be effective in the resolution of most of the isomers of conjugated…”
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Duodenal and milk trans octadecenoic acid and conjugated linoleic acid (CLA) isomers indicate that postabsorptive synthesis is the predominant source of cis-9-containing CLA in lactating dairy cows by Piperova, Liliana S, Sampugna, Joseph, Teter, Beverly B, Kalscheur, Kenneth F, Yurawecz, Martin P, Ku, Youh, Morehouse, Kim M, Erdman, Richard A

“…Duodenal and milk samples obtained from lactating cows in a previous study were analyzed to compare the content and isomer distribution of conjugated linoleic…”
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Lipase-catalyzed fractionation of conjugated linoleic acid isomers by Haas, M.J, Kramer, J.K.G, McNeill, G, Scott, K, Foglia, T.A, Sehat, N, Fritsche, J, Mossoba, M.M, Yurawecz, M.P

“…The abilities of lipases produced by the fungus Geotrichum candidum to selectively fractionate mixtures of conjugated linoleic acid (CLA) isomers during…”
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Evaluating acid and base catalysts in the methylation of milk and rumen fatty acids with special emphasis on conjugated dienes and total trans fatty acids by Kramer, J.K.G, Fellner, V, Dugan, M.E.R, Sauer, F.D, Mossoba, M.M, Yurawecz, M.P

“…Milk analysis is receiving increased attention. Milk contains conjugated octadecadienoic acids (18∶2) purported to be anticarcinogenic, low levels of essential…”
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Relative retention order of all isomers of cis/trans conjugated linoleic acid FAME from the 6,8‐ to 13,15‐positions using silver ion HPLC with two elution systems by Delmonte, Pierluigi, Kataoka, Ai, Corl, B. A., Bauman, D. E., Yurawecz, Martin P.

“…CLA, defined as one or more octadecadienoic acids (18∶2) with conjugated double bonds, has been reported to be active in a number of bological systems. GC and…”
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Effects of Conjugated Linoleic Acid (CLA) Isomers on Oxygen Diffusion−Concentration Products in Liposomes and Phospholipid Solutions by Yin, Jun-Jie, Kramer, John K. G, Yurawecz, Martin P, Eynard, A. R, Mossoba, Magdi M, Yu, Liangli (Lucy)

“…Conjugated linoleic acids (CLAs) are a group of octadecadienoic acids (18:2) that are naturally present in food products and may have beneficial health…”
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Preparation, separation, and confirmation of the eight geometrical cis/trans conjugated linoleic acid isomers 8,10- through 11,13-18:2 by Eulitz, K, Yurawecz, M.P, Sehat, N, Fritsche, J, Roach, J.A.G, Mossoba, M.M, Kramer, J.K.G, Adlof, R.O, Ku, Y

“…Conjugated linoleic acid (CLA) mixtures were isomerized with p‐toluenesulfinic acid or I2 catalyst. The resultant mixtures of the eight cis/trans geometric…”
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Rumenic acid: A proposed common name for the major conjugated linoleic acid isomer found in natural products by Kramer, John K. G., Parodi, Peter W., Jensen, Robert G., Mossoba, Magdi M., Yurawecz, Martin P., Adlof, Richard O.

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Silver-ion HPLC of conjugated linoleic acid isomers by Yurawecz, Martin P., Morehouse, Kim M.

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Influence of growth promoting implants on fatty acid composition including conjugated linoleic acid isomers in beef fat by FRITSCHE, Sonja, RUMSEY, Theron S, YURAWECZ, Martin P, YUOH KU, FRITSCHE, Jan

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