Reduction of microbial contamination and improvement of germination of sweet basil (<i>Ocimum basilicum</i>L.) seeds via surface dielectric barrier discharge

Ambrico, P F; Šimek, Milan; Morano, Massimo; Angelini, Rita Milvia De Miccolis; Minafra, A.; Trotti, Pasquale; Ambrico, M.; Prukner, V.; Faretra, F.

doi:10.1088/1361-6463/aa77c8

Cited by 43 publications

(54 citation statements)

References 47 publications

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“…1) was a burst of two AC cycles (f AC = 5 kHz) with a repetition rate of 500 Hz (duty cycle of 0.2) ensuring a homogenous distribution of microdischarges. The real discharge 'ON' period is actually shorter compared with the AC cycle period, we can estimate an effective duty cycle of the order of 0.1 of the nominal one 53 . This guarantees that the biological samples were not exposed to excessive noxious temperatures.…”

Section: Resultsmentioning

confidence: 92%

“…Low temperature plasma (LTP) is a fast, economic and eco-friendly 63 technology that can be applied to products improving their commercial quality. It creates a lethal environment for pathogenic bacteria or other types of unwanted microorganisms like molds 30,53,64 without any residues or harmful by-products for the environment or the commodity being treated.…”

Section: Discussionmentioning

confidence: 99%

“…Discharge system. The discharge system includes the modified SDBD reactor used to study the production of active species by SDBDs 11 , gas feeding unit, discharge energization system, electrical and optical diagnostics and sample holder suitable for inserting biological samples at a selected distance from the discharge surface 53 . The SDBD reactor (Fig.…”

Section: Methodsmentioning

confidence: 99%

“…The ICCD was used to register the time-averaged emission spectra through the iHR-320 spectrometer (Jobin-Yvon) equipped with the 150, 1200, 3600 G/mm dispersion gratings. The intensities of the emission spectra acquired www.nature.com/scientificreports www.nature.com/scientificreports/ by the ICCD detector were corrected for a given detector sensitivity and optical path by means of DH-2000 deuterium-halogen light source (Ocean Optics) 53 . fungal isolates and conidial germination tests.…”

Section: Methodsmentioning

confidence: 99%

“…As for plasma medicine, interest has grown in recent years on the application of plasma to agriculture, with an increasing number of uses for the treatment of crops, seeds, water and soil, and at multiple steps in the food industry. On seeds, LTP treatment reduces microbial contamination and promotes germination, rooting and growth of seedlings [45][46][47][48][49][50][51][52][53] . It has enhanced safety while maintaining quality properties of a wide range of perishable food products in a fast processing time 54 .…”

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confidence: 99%

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Surface Dielectric Barrier Discharge plasma: a suitable measure against fungal plant pathogens

Ambrico

Šimek

Rotolo

et al. 2020

Sci Rep

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Fungal diseases seriously affect agricultural production and the food industry. Crop protection is usually achieved by synthetic fungicides, therefore more sustainable and innovative technologies are increasingly required. the atmospheric pressure low-temperature plasma is a novel suitable measure. We report on the effect of plasma treatment on phytopathogenic fungi causing quantitative and qualitative losses of products both in the field and postharvest. We focus our attention on the in vitro direct inhibitory effect of non-contact Surface Dielectric Barrier Discharge on conidia germination of Botrytis cinerea, Monilinia fructicola, Aspergillus carbonarius and Alternaria alternata. A few minutes of treatment was required to completely inactivate the fungi on an artificial medium. Morphological analysis of spores by Scanning electron Microscopy suggests that the main mechanism is plasma etching due to Reactive oxygen Species or UV radiation. Spectroscopic analysis of plasma generated in humid air gives the hint that the rotational temperature of gas should not play a relevant role being very close to room temperature. In vivo experiments on artificially inoculated cherry fruits demonstrated that inactivation of fungal spores by the direct inhibitory effect of plasma extend their shelf life. Pretreatment of fruits before inoculation improve the resistance to infections maybe by activating defense responses in plant tissues.

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Section: Resultsmentioning

confidence: 92%

Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

mentioning

confidence: 99%

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Surface Dielectric Barrier Discharge plasma: a suitable measure against fungal plant pathogens

Ambrico

Šimek

Rotolo

et al. 2020

Sci Rep

Self Cite

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The shift in the laminar‐to‐turbulent transition flow mode in atmospheric pressure plasma jet

Mohamed

Fadhlalmawla

Almarashi

2022

Plasma Processes & Polymers

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Nonthermal equilibrium atmospheric pressure plasma jet gained great interest due to its multidisciplinary applications. This work is focused on studying the characteristics of an argon atmospheric pressure plasma jet and the laminarto-turbulent flow mode transition. By increasing the applied voltage from 10 to 25 kV, the plasma can run in four operational modes depending on the number of current pulses per half a cycle of the applied voltage. The plasma jet gas temperature increases from 310 to 370 K and the laminar-to-turbulent transition value shifts toward lower flow rate values from 3.75 to 2.6 slpm as a result of increasing the applied voltage. A clear border between the laminar and the turbulent regions has been resolved at different applied voltages and flow rates at a fixed applied frequency of 24 kHz.

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Agriculture and Food Processing Applications

Brust¹,

Wannicke²,

Park³

2023

Topics in Applied Physics

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Reduction of microbial contamination and improvement of germination of sweet basil (Ocimum basilicumL.) seeds via surface dielectric barrier discharge

Cited by 43 publications

References 47 publications

Surface Dielectric Barrier Discharge plasma: a suitable measure against fungal plant pathogens

Surface Dielectric Barrier Discharge plasma: a suitable measure against fungal plant pathogens

The shift in the laminar‐to‐turbulent transition flow mode in atmospheric pressure plasma jet

Agriculture and Food Processing Applications

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