Format of Presentation

Poster to be presented the Friday of the conference

Abstract

Feeding systems of cattle are returning to fresh forage, making use of modern technologies such as hydroponics for year-round access. In order to be labelled as Grass-Fed milk, operations must now adhere to national standards set by the Dairy Farmers of Canada. To meet quality assurance standards, the 18:2 n-6/18:3 n-3 ratio in milk is required to be less than or equal to 3.5 in the first 12 months of testing, and less then or equal to 3.0 thereafter. The analysis of omega fatty acids in milk is possible by NMR spectroscopy, and with the emergence of benchtop NMR spectrometers, in-house testing may be possible in order to meet this quality assurance guideline. In collaboration with the Nutriva Group, which feeds dairy cattle hydroponically grown grass and sprouts, the omega fatty acids of raw milk samples are currently being analyzed by 1H and 1D TOCSY NMR spectroscopy. The overall goal of this experiment is to provide findings on omega fatty acids, as well as polyunsaturated, monounsaturated, and saturated fats in milk provided by the Nutriva Group and to compare them with conventional milk products.

Department

Chemistry

Faculty Advisor

Dipesh Prema and John Church

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Comparison of Omega 6:3 Fatty Acid Ratios in Milk from Conventional, Grass-fed, and Sprout-fed Dairy Cattle Using NMR Spectroscopy

Feeding systems of cattle are returning to fresh forage, making use of modern technologies such as hydroponics for year-round access. In order to be labelled as Grass-Fed milk, operations must now adhere to national standards set by the Dairy Farmers of Canada. To meet quality assurance standards, the 18:2 n-6/18:3 n-3 ratio in milk is required to be less than or equal to 3.5 in the first 12 months of testing, and less then or equal to 3.0 thereafter. The analysis of omega fatty acids in milk is possible by NMR spectroscopy, and with the emergence of benchtop NMR spectrometers, in-house testing may be possible in order to meet this quality assurance guideline. In collaboration with the Nutriva Group, which feeds dairy cattle hydroponically grown grass and sprouts, the omega fatty acids of raw milk samples are currently being analyzed by 1H and 1D TOCSY NMR spectroscopy. The overall goal of this experiment is to provide findings on omega fatty acids, as well as polyunsaturated, monounsaturated, and saturated fats in milk provided by the Nutriva Group and to compare them with conventional milk products.

 

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