Previous studies reported in Table 1 showed that methanol was the best extraction solvent to obtain phenolic compounds from potato peel. For example, Rodriguez de Sotillo et al. (1994) obtained high amount of total phenolics (41.56 mg/100 g; wb) with methanolic extraction compared to the study of Im et al. (2008) that used ethanolic extraction (7–10 mg/100 g; wb)