Fast, Direct Analysis of Underivatized Amino Acids in Infant Formula
Reliable methods for free amino acids in baby food are needed to ensure that nutritional requirements are met. This direct analysis of underivatized amino acids provides excellent results in a faster, easier workflow compared to derivatization-based approaches.
Automated In-Line Pigment Removal Increases Accuracy for Multiresidue Pesticide Analysis
Coextracted matrix components can suppress or enhance ionization, reducing the accuracy of quantitative LC-MS/MS data. In this video poster, we share a new in-line sample preparation (ILSP) workflow that removes pigments and improves accuracy for 63 pesticides in spinach.
Not All Matrix-Matched Calibration Standards Produce the Same Results
Matrix-matched calibrations are a popular option for complex food matrices. But are all matrix-matched calibrations equal? Here, we explore what happens when standards are prepared by spiking spinach prior to extraction vs. spiking cleaned extract right before analysis.
QuEChERS Optimization for Low-Moisture Matrices
Hydration is essential for QuEChERS extraction of low-moisture commodities, but what’s the best water-to-matrix ratio? In this study of honey and brown rice flour, we found that reducing the matrix load below 1:1 may improve sample handling and result in better recoveries.