Role of the Green Husks of Persian Walnut (Juglans regia L.)—A Review

Green husks are the outer layer of walnut fruits. They form part agro-residues discarded away upon nut maturity in industry. Although it is not used, research studies show that green husk a rich source natural bioactive phytochemicals. A total 83 individual phenolic compounds were identified husks, mainly consisting naphthoquinones, flavonols, and hydroxycinnamic acids. There no standard profile walnuts; quantity quality vary by cultivar. Walnut extracts exhibit strong antioxidant activities play an important role plant’s defence mechanisms against diseases, attacking different plant organs. The study provides review content cultivars as documented studies. It also explores application various industries such traditional medicine, textile, wood, leather, beverage, agriculture. In addition, effects on biotic abiotic factors evaluated.