Chemical Profiling of Significant Antioxidant and Phytotoxic Microwave-Extracted Essential Oil from Araucaria heterophylla Resin

Due to the various hazards of using synthetic chemical compounds in pharmaceutics, agriculture, and industry, scientists researchers do their best explore assess new green natural from resources with potent activity. The essential oil (EO) resin collected Araucaria heterophylla Salisb. was extracted by microwave technique chemically characterized via GC-MS analysis. Furthermore, extract EO assessed for its antioxidant phytotoxic activities. has 33 compounds, mainly terpenes (98.23%), major were α-pinene (62.57%), β-pinene (6.60%), germacrene D (5.88%), β-caryophyllene (3.56%). showed substantial activity, where it IC50 values 142.42 118.03 mg L−1 DPPH ABTS, respectively. On other hand, revealed considerable phytotoxicity against weed Chenopodium murale, 304.0, 230.1, 147.1 L−1, seed germination, seedling shoot growth, root Moreover, same pattern allelopathic inhibition Sonchus oleraceus, 295.7, 224.5, 106.1 present study that extraction affects constituents EO, particularly quantitative composition. A. also activity weeds. Therefore, can be considered a promising resource could integrated into management approach. However, further is recommended deep characterization authentic evaluation mode action(s) on wide spectrum