Enone oxidoreductase involved in the biosynthesis of 4-hydroxy-2,5-dimethyl-3(2H)-furanone (HDMF or furaneol), the key flavor compound in strawberries. Can use both NADH and NADPH as the electron donor. 4-hydroxy-2,5-dimethyl-furan-3(2H)-one + NADP(+) = 4-hydroxy-5-methyl-2-methylenefuran-3(2H)-one + H(+) + NADPH Optimum pH is 7.0. Optimum temperature is 37 degrees Celsius. Monomer. Expressed in parenchyma tissues of red fruits. Not found in vascular tissues. Also detected in the achenes. Up-regulated during ripening. Down-regulated by auxin. The N-terminus is blocked. Belongs to the zinc-containing alcohol dehydrogenase family. Quinone oxidoreductase subfamily.