BECAUSE the sulphur amino-acids are so often the limiting amino-acids of human diets 1,2, a relatively quick and accurate method for their estimation is useful in the determination of the protein ...

High-performance liquid chromatography (HPLC) is an analytical chemistry technique used to separate liquid mixtures of compounds or analytes. The method employs a liquid "mobile phase" to transport ...

The rapid, sensitive and convenient method employs a safe extraction solution (mixture of acetonitrile, methanol and water) and an immunoaffinity column (IAC) for clean-up. Compared with the widely ...