A simple protocol to determine lignin S/G ratio in plants by UHPLC-MS - Mokochinski, Joao Benhur; Bataglion, Giovana Anceski; Kiyota, Eduardo; Souza, Letícia Marrone de; Mazzafera, Paulo; Sawaya, Alexandra Christine Helena Franklan (Analytical and Bioanalytical Chemistry, 2015)