M
Martin P. Yurawecz
Researcher at Center for Food Safety and Applied Nutrition
Publications - 72
Citations - 4870
Martin P. Yurawecz is an academic researcher from Center for Food Safety and Applied Nutrition. The author has contributed to research in topics: Conjugated linoleic acid & Linoleic acid. The author has an hindex of 33, co-authored 72 publications receiving 4743 citations. Previous affiliations of Martin P. Yurawecz include Center for Food Safety & Food and Drug Administration.
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Journal ArticleDOI
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
John K. G. Kramer,Vivek Fellner,Michael E. R. Dugan,Frank D. Sauer,Magdi M. Mossoba,Martin P. Yurawecz +5 more
TL;DR: No single method or combination of methods could adequately prepare FAME from all lipid classes in milk or rumen lipids, and not affect the conjugated dienes.
Journal ArticleDOI
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.
Cristina Cruz-Hernandez,Zeyuan Deng,Jianqiang Zhou,Arthur Hill,Martin P. Yurawecz,Pierluigi Delmonte,Magdi M. Mossoba,Michael E. R. Dugan,John K. G. Kramer +8 more
TL;DR: Improved techniques are further required to evaluate the CLA profile in monogastric animals fed commercial CLA preparations for CLA enrichment of animal products and to help design experimental diets to increase the level of the desired CLA isomers in dairy fats.
Journal ArticleDOI
Mammary Lipogenic Enzyme Activity, trans Fatty Acids and Conjugated Linoleic Acids Are Altered in Lactating Dairy Cows Fed a Milk Fat–Depressing Diet
Liliana S. Piperova,Beverly B. Teter,Israel Bruckental,Joseph Sampugna,Scott E. Mills,Martin P. Yurawecz,Jan Fritsche,Ken Ku,Richard A. Erdman +8 more
TL;DR: The data were consistent with a dietary effect on mammary de novo FA synthesis mediated through a reduction in ACC and FAS activity and in ACC mRNA abundance, and were compatible with a role of trans-10, cis-12 CLA in milk fat depression.
Journal ArticleDOI
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
Liliana S. Piperova,Joseph Sampugna,Beverly B. Teter,Kenneth Kalscheur,Martin P. Yurawecz,Youh Ku,Kim M. Morehouse,Richard A. Erdman +7 more
TL;DR: For other CLA isomers, duodenal flow was always greater than milk secretion, suggesting that they essentially were produced in the rumen, and most likely from endogenous synthesis via Delta9-desaturation of ruminally derived tFA.
Journal ArticleDOI
Silver-ion high-performance liquid chromatographic separation and identification of conjugated linoleic acid isomers
Najibullah Sehat,Martin P. Yurawecz,John A. G. Roach,Magdi M. Mossoba,John K. G. Kramer,Youh Ku +5 more
TL;DR: The potential of the application of silverion impregnated high-performance liquid chromatography to the separation of complex mixtures of conjugated linolenic acid (CLA) isomers present in commercial CLA sources and foods and in biological specimens was demonstrated.