Peanut (Arachis hypogeae L.), as an annual leguminous crop, is also known as earthnut, monkey nut, and goobers. It is a major oilbearing crop and is widely cultivated throughout the world, of which China and India have the largest cultivation area and production (Arya et al., 2016). Peanuts ranks as the 13th largest food crop and the 4th largest oil crop in the world (Zhao et al., 2021). Unlike most plants, fruits of peanuts grow in soil, not on the ground. A complete peanut consists of peanut shells, peanut skins, and peanut seeds, in which peanut skins and peanut seeds are edible parts. Peanut seeds are rich in nutrients, oil content of about 50%, protein content of more than 20%, and mineral and vitamin contents are also rich (Yaw et al., 2008). Owing to its high oil content, peanut was once considered an unhealthy food. Peanut skins contain rich natural antioxidants such as polyphenol compounds, but it is usually considered a low-value by-product in food industries (Ballard et al., 2009;Dudek et al., 2017). It is valuable to study the biological activity of peanut skins so that they are not wasted as by-products. Peanut has multiple uses and is used to make edible oil, emulsifier, animal