Treatment of Pea Seeds with Plasma Activated Water to Enhance Germination, Plant Growth, and Plant Composition

Rathore, Vikas; Tiwari, Budhi Sagar; Nema, Sudhir Kumar

doi:10.1007/s11090-021-10211-5

Cited by 33 publications

(21 citation statements)

References 40 publications

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“…The significantly higher number of germinating wheat grains in the PAW pre-treated samples corresponds to the results of other works [ 62 , 63 , 64 , 65 , 66 ]. It has been shown in many experiments that shorter durations of direct NTP treatment can positively affect the germination of different plant species [ 67 , 68 , 69 , 70 , 71 , 72 ].…”

Section: Discussionsupporting

confidence: 89%

Comparison of the Effect of Plasma-Activated Water and Artificially Prepared Plasma-Activated Water on Wheat Grain Properties

Jirešová

Scholtz

Julák

et al. 2022

Plants

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Recently, much attention has been paid to the use of low-temperature plasmas and plasma-activated water (PAW) in various areas of biological research. In addition to its use in medicine, especially for low-temperature disinfection and sterilization, a number of works using plasma in various fields of agriculture have already appeared. While direct plasma action involves the effects of many highly reactive species with short lifetimes, the use of PAW involves the action of only long-lived particles. A number of articles have shown that the main stable components of PAW are H2O2, O3, HNO2, and HNO3. If so, then it would be faster and much more practical to artificially prepare PAW by directly mixing these chemicals in a given ratio. In this article, we review the literature describing the composition and properties of PAW prepared by various methods. We also draw attention to an otherwise rather neglected fact, that there are no significant differences between the action of PAW and artificially prepared PAW. The effect of PAW on the properties of wheat grains (Triticum aestivum L.) was determined. PAW exposure increased germination, shoot length, and fresh and dry shoot weight. The root length and R/S length, i.e., the ratio between the underground (R) and aboveground (S) length of the wheat seedlings, slightly decreased, while the other parameters changed only irregularly or not at all. Grains artificially inoculated with Escherichia coli were significantly decontaminated after only one hour of exposure to PAW, while Saccharomyces cerevisiae decontamination required soaking for 24 h. The differences between the PAW prepared by plasma treatment and the PAW prepared by artificially mixing the active ingredients, i.e., nitric acid and hydrogen peroxide, proved to be inconsistent and statistically insignificant. Therefore, it may be sufficient for further research to focus only on the effects of artificial PAW.

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Section: Discussionsupporting

confidence: 89%

Comparison of the Effect of Plasma-Activated Water and Artificially Prepared Plasma-Activated Water on Wheat Grain Properties

Jirešová

Scholtz

Julák

et al. 2022

Plants

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show abstract

“…Additionally, PAW is a more environmentally friendly and economically viable alternative to traditional food preservation techniques, as it doesn't leave any toxic residue on the food or enter the wastewater during food processing (15,27). The only cost associated with producing PAW is the electrical discharge power, which ranges from a few watts to less than 100 W (23,32,37).…”

Section: Discussionmentioning

confidence: 99%

“…The PAW was prepared using air plasma, with a pencil plasma jet. The electrical and optical emission characterization of the pencil plasma jet can be found in our previous work (36,37).…”

Section: Preparation and Characterization Of Pawmentioning

confidence: 99%

Enhancement of shelf life of Citrus Limon L. (Lemon) using plasma activated water

Rathore

Nema²

2023

Preprint

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The present study investigates the impact of plasma-activated water (PAW) on the shelf life of Lemon (Citrus Limon L.). PAW is generated through atmospheric pressure air dielectric barrier discharge using a pencil plasma jet. The plasma interacted with water for different time intervals to produce PAW of varying reactivity. The voltage-current waveform of the plasma is characterized, and the species/radicals formed in the plasma are detected using optical emission spectroscopy. The results of the study indicate that a 30-minute exposure of lemons to PAW results in a significantly higher reduction of microbial load on the lemon surface compared to the control (ultrapure milli-Q water). In addition, the PAW exposure of lemons resulted in lower weight loss and spoilage compared to the control over a long duration. The sensory evaluation (smell, appearance, taste) and color evaluation (L*, a*, b*) showed that PAW exposed lemons have shown improved acceptability compared to lemons exposed to the control. The surface firmness test also revealed that PAW exposure did not damage the lemon surface. The analysis of lemon juice nutrients (titratable acidity, sugar, carbohydrate, protein, and vitamin C) and antioxidant activity (total phenols, flavonoids, DPPH and ABTS assay) indicated that the interaction of PAW with lemons did not result in significant changes in these aspects compared to the control. Lastly, the 2-month long-term storage of lemons after PAW and control exposure showed that lemons exposed to PAW had acceptable quality, wherein lemons exposed to control were completely spoiled and covered with mold. The study reveals that PAW has the potential to be used as an environmentally friendly alternative to chemical food preservatives.

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“…The air plasma optical emission spectra is shown in Figure 1 (see supplementary Figure S3 for details of emission lines) (44,(47)(48)(49)(50). These generated species/radicals are the major contributors that change the physicochemical properties of the solution as well as responsible for degradation of organic impurities present in wastewater.…”

Section: Plasma Characterizationmentioning

confidence: 99%

Methotrexate degradation in artificial wastewater using non-thermal pencil plasma jet

Rathore

2023

Preprint

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The rising global cancer rate is driving up the consumption of anticancer drugs. This causing a noticeable increase in the levels of these drugs in wastewater. The drugs are not metabolized effectively by the human body, leading to their presence in human waste, as well as in the effluent from hospitals and drug manufacturing industries. Methotrexate is a commonly used drug for treating various types of cancer. Its complex organic structure makes it difficult to degrade using conventional methods. The present work proposed a non-thermal pencil plasma jet treatment for methotrexate degradation. The air plasma produced in this jet setup is electrical characterized and plasma species/radicals are identified using emission spectroscopy. The degradation of drug is monitored by studying the change in solution physiochemical properties, HPLC-UV analysis, and removal of total organic carbon, etc. Results show that a 9-minute plasma treatment completely degraded the drug solution that followed first order degradation kinetics with rate constant 0.38 min-1 and 84.54% mineralization was observed. Additionally, an increase in electrical conductivity and dissolved solids compared to virgin water-plasma interaction indicated the formation of new, smaller compounds (2,4-Diaminopteridine-6-carboxylic acid, N-(4-Aminobenzoyl)-L-glutamic acid, etc.) after drug degradation. The plasma-treated methotrexate solution also showed lower toxicity towards freshwater chlorella algae compared to the untreated solution. Finally, it can be said that non-thermal plasma jets are economically and environmentally friendly devices that have the potential to be used for the treatment of complex and resistive anticancer drugpolluted wastewaters.

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Treatment of Pea Seeds with Plasma Activated Water to Enhance Germination, Plant Growth, and Plant Composition

Cited by 33 publications

References 40 publications

Comparison of the Effect of Plasma-Activated Water and Artificially Prepared Plasma-Activated Water on Wheat Grain Properties

Comparison of the Effect of Plasma-Activated Water and Artificially Prepared Plasma-Activated Water on Wheat Grain Properties

Enhancement of shelf life of Citrus Limon L. (Lemon) using plasma activated water

Methotrexate degradation in artificial wastewater using non-thermal pencil plasma jet

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