Enhancing Nutrient Elements and Phenolic Compounds in Mentha Piperita L. through the Application of Nano Iron Oxide and Vitamin B3 (Niacin) Spraying Treatments

Abstract

This study aimed to investigate the effects of nano iron oxide and vitamin B3 (niacin) application on the nutrient elements and phenolic compounds of Mentha piperita L. plant. Nano iron oxide was used at concentrations of 0, 40, 80, and 120 mg L-1, while vitamin B3 (niacin) was applied at 0, 50, and 100 mg L-1 in distilled water. The results demonstrated that spraying the combination of nano iron oxide (120 mg L-1) and niacin (100 mg L-1) in distilled water led to a significant increase in the nutrient levels of N, P, K, and Fe, reaching 2.460, 0.460, 2.71, and 224.0, respectively. The same treatment also resulted in elevated levels of phenolic compounds, including Protocatechuic Acid, Chlorogenic Acid, Rutin, Naringin, Coumarin, Ferulic Acid, Trans-cinnamic Acid, Myricetin, Morin, and Apigenin, at concentrations of 123.184, 356.049, 155.940, 194.265, 125.238, 252.062, 190.900, 159.283, 167.048, and 159.982 µg/ml, respectively. These findings highlight the potential benefits of nano iron oxide and niacin application in enhancing nutrient and phenolic compound levels in Mentha piperita L. plant.