Vitamin content between grass-fed and commercially fed beef

Although grass-fed and commercially fed beef may look very similar, the compositions are very different. Grass-fed beef is thought to have more vitamin content than commercially fed beef but is not as common due to it being more expensive. The grass-fed beef used in this experiment came from Earth-Be-Glad Farm and the commercially fed beef came from Kwik Trip. Our experiment looked at the different vitamin concentrations, specifically niacin, between grass-fed beef and commercially raised beef. This was done by hydrolyzing the sample, denaturing the proteins, and filtering to get a final product. The final product was analyzed using high-performance liquid chromatography (HPLC) and 37 absorbance was measured at 470 nm. We have also analyzed the fatty acid methyl esters (FAMEs) using a GC-MS between the same beefs. We found that the grass-fed had about 20% more saturated fats than the commercially fed beef