NADPH-dependent aldehyde reductase involved in the detoxification of aldehyde inhibitors derived from lignocellulosic biomass conversion. Reduces commonly detected inhibitors in biomass conversion hydrolysates such as furfural, 5-hydroxymethylfurfural (HMF), cinnamic aldehyde, benzaldehyde, phenylacetaldehyde, and anisaldehyde. Optimum pH is 7.0. Optimum temperature is 25 degrees Celsius. By furfural and 5-hydroxymethylfurfural (HMF). Belongs to the NAD(P)-dependent epimerase/dehydratase family. Dihydroflavonol-4-reductase subfamily.