Pierce Negative Ion Calibratio

Characterization of Phosphopeptides Using a Combination of Immobilized Metal Ion Affinity Media and Direct Analysis by MALDI-TOF-MS

from the metal ion column prior to MS analysis can result in sample loss. Affinity-bound analytes, including phosphopeptides, can be directly analyzed by MALDI-MS without prior elution from the affinity media. Also, consecutive enzymatic reactions

Characterization of Phosphopeptides Using a Combination of Immobilized Metal Ion

of the phosphopeptides from the metal ion column prior to MS analysis can result in sample loss. Affinity-bound analytes, including phosphopeptides, can be directly analyzed by MALDI-MS without prior elution from the affinity media. Also, consecutive enzymatic reactions

Cupric Ion Reducing Antioxidant Capacity Assay for Food Antioxidants: Vitamins, Polyphenolics, and Flavonoids in Food Extracts

. The parallelism of the linear calibration curves of pure antioxidants in water and in a given complex matrix (plant extract) demonstrates that there are no chemical interactions of interferent nature among the solution constituents, and that the antioxidant