Method (HPLC) determine? A: Mass Capsaicinoids Percentage (MC %). Q: What is 'Mass Capsaicinoids Percentage' (MC %)? A: Mass Capsaicinoids Percentage (MC %) is the concentration percentage of total capsaicinoids present in a sample of oleoresin capsicum (OC) tested by AOAC protocol using HPLC chemical analysis. Q: Is there an example