Characterization and evaluation of cold atmospheric plasma as seedborne fungal disinfectant and promoting mediator for physico-chemical characteristics of Moringa oleifera seedlings

Abstract

Non-thermal atmospheric pressure plasmas are a powerful tool to impact seed germination and microbial decontamination. Air large volume atmospheric pressure glow discharge plasma was developed and investigated to improve the biological activities of Moringa oleifera seeds. Ninty ns magnetic pulse compression high voltage system was used to generate the plasma. The plasma discharges current increases with increasing applied voltage and it decreases with increasing discharge gap. There was a steady reduction in the count of seedborne fungi on the application of air cold plasma with complete elimination of fungi at ≥ 10.94 mJ per pulse. The low doses of plasma (2.46 and 4.35 mJ) induced an increase in the seed germination, a significant increase in chlorophyll content (chl a and chl b) and antioxidant activities of the seedlings emerged from soaked or wet seeds rather than dry seeds. At lower plasma doses (2.46 and 4.35 mJ) there was a significant increase in leaf area and chlorophyll content (chl a and chl b) of the seedlings that emerged from H2O2 soaked seeds rather than that of free from H2O2. The plasma was harmful when applied at higher doses (≥ 10.94 mJ) and more harmful to the wet seeds compared to the dry ones.

Assessment of Oil and Seed Extracts of Moringa oleifera for Promising Anticandidal Activity in Autistic Children

“…The plant parts (leaves, fruits, seeds, roots, bark and flowers) have a variety of therapeutic and nutritional benefits in humans. It has been demonstrated that bioactive compounds in the plant leaves, fruits and seeds contain variety of active constituents that have a wide spectrum of biological impacts and pharmacological uses (Nesamani & Plants, 1999;Jacques et al, 2020;Ouf et al, 2022). Numerous studies have identified M. oleifera oil as a potent anti-inflammatory drug (Ezeamuzle et al, 1996).…”