An overview on extraction, composition, bioactivity and food applications of peanut phenolics

•The peanut skin (PS) contains a vast array of phenolic compounds.•PS phenolics can be properly obtained by means of green extraction technologies.•PS phenolics can display diverse antioxidant activities in food and biological systems.•PS phenolics can make a meaningful contribution to food preservation.•Obtaining stable, product-specific compositions is a priority for future research.