Can reduce the dialdehyde protein-binding form of aflatoxin B1 (AFB1) to the non-binding AFB1 dialcohol. May be involved in protection of liver against the toxic and carcinogenic effects of AFB1, a potent hepatocarcinogen (By similarity). . This is the function of AKR7L (aldo-keto reductase family 7 like (gene/pseudogene), Ensembl gene identifier ENSG00000211454).