Oligomeric procyanidins of lotus seedpod inhibits the formation of advanced glycation end-products by scavenging reactive carbonyls

► LSOPC inhibition rate is significantly higher than that of AG and can protect the structure of BSA effectively in the glycation process. ► The decreased amounts of MGO in LSOPC and catechin are higher than AG. ► The catechin-methylglyoxal adducts and LSOPC-methylglyoxal adducts were identified by LC-MS2.