Analysis of proanthocyanidins in almond blanch water by HPLC-ESI-QqQ-MS/MS and MALDI-TOF/TOF MS

► Almond blanch water (ABW) is a by-product from almond industrial processing. ► Proanthocyanidins (PA) profile in ABW was determined by HPLC-ESI-QqQ-MS/MS and MALDI-TOF/TOF MS. ► More than 80 PA, from dimers to decamers, were identified in ABW. ► ABW may be used as a source of water-soluble PA.