Key Findings: Peanut skins are the primary source of phenolic compounds, including catechins and procyanidins, which are highly active antioxidants. It also contains other components that exhibit antimicrobial and antifungal activity. According to the author, "This body of evidence demonstrates the antioxidant activities of the phenolic compounds found within peanut skins and usefulness as a potential functional food ingredient and value added utilization in the animal feed market. Moreover, this review collectively implies that peanut skins may serve as an effective antimicrobial and natural alternative to medicinal antibiotics for the control of pathogenic microorganisms."