Plasma agriculture

Ito, Masafumi; Ohta, Takayuki; Hori, Masaru

doi:10.3938/jkps.60.937

Cited by 80 publications

(64 citation statements)

References 46 publications

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“…In terms of mycotoxin removal, plasma technology has mostly been used for the treatment of seeds, cereals, crops and fresh products [30,34,58,59]. For example, the use of an atmospheric pressure fluidized bed plasma system with air and nitrogen as a feed gas, which was used for the inactivation of A. flavus and A. parasiticus contaminated maize resulting in a 5.48 log reduction [28].…”

Section: The Background Of Cap Decontamination In Agriculture and mentioning

confidence: 99%

Mycotoxin Decontamination of Food: Cold Atmospheric Pressure Plasma versus “Classic” Decontamination

Hojnik

Cvelbar

Tavčar-Kalcher

et al. 2017

Toxins

124

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Mycotoxins are secondary metabolites produced by several filamentous fungi, which frequently contaminate our food, and can result in human diseases affecting vital systems such as the nervous and immune systems. They can also trigger various forms of cancer. Intensive food production is contributing to incorrect handling, transport and storage of the food, resulting in increased levels of mycotoxin contamination. Mycotoxins are structurally very diverse molecules necessitating versatile food decontamination approaches, which are grouped into physical, chemical and biological techniques. In this review, a new and promising approach involving the use of cold atmospheric pressure plasma is considered, which may overcome multiple weaknesses associated with the classical methods. In addition to its mycotoxin destruction efficiency, cold atmospheric pressure plasma is cost effective, ecologically neutral and has a negligible effect on the quality of food products following treatment in comparison to classical methods.

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Section: The Background Of Cap Decontamination In Agriculture and mentioning

confidence: 99%

Mycotoxin Decontamination of Food: Cold Atmospheric Pressure Plasma versus “Classic” Decontamination

Hojnik

Cvelbar

Tavčar-Kalcher

et al. 2017

Toxins

124

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“…In this talk, a high-density NEAPP applied for inactivating fungal spores of Penicillium digitatum is introduced as an environmentally safe and rapid inactivation method [38][39][40]. The contributions of ozone and UV radiation in the NEAPP on the inactivation of spores are evaluated using colony count method.…”

Section: Introductionmentioning

confidence: 99%

Plasma agriculture based on quantitative monitoring of reactions between fungal cells and atmospheric-pressure plasmas

2012

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A high-density non-equilibrium atmospheric pressure plasma (NEAPP) applied for inactivating fungal spores of P. digitatum is introduced as an environmentally safe and rapidinactivation method. The contributions of ozone, ultra violet (UV) radiation and ground-state atomic oxygen in the NEAPP on the inactivation of the spores are evaluated using colony count method.The absolute densities of ozone were measured by using ultraviolet absorption spectroscopy. The ozone density increased from 2 to 8 ppm with an increase in the distance from the plasma source, while the inactivation rate decreased. The inactivation rate of plasma was evaluated to be thousand times higher than that of an ozone generator using the integrated number density of ozone. In addition, it was clarified that the contribution of UV radiation to inactivation was not dominant for P. digitatum inactivation by NEAPP by filtering the active species using quartz plate. From these results, we can speculate that the inactivation efficiency of reactive oxygen species (ROS) will be larger than those of others.In order to investigate the effect of ground-state atomic oxygen as one of ROS, the inactivation of P. digitatum spores using an oxygen radical source that employs a high-density atmospheric-pressure O 2 /Ar plasma. The absolute O density was measured to be 1.4×10 14 and 1.5×10 15 cm -3 using vacuum ultra violet absorption spectroscopy (VUVAS) using a microdischarge hollow cathode lamp. The behaviors of the O densities as a function of O 2 /(Ar+O 2 ) mixture flow rate ratio correspond to that of the inactivation rate. This result indicates that ground-state atomic oxygen is concluded to be the dominant species that causes inactivation.

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“…It is important to clarify advantages and disadvantages of plasma treatments over other methods. One important advantage of plasma treatments is the fact that highly reactive and short lifetime species of high density without any thermal damage can be provided by plasmas [2][3][4][5][6][7][8][9][10][11][12][13][14]. Highly reactive species are more effective than stable chemicals and have much less residual harmful effects due to their short lifetime.…”

Section: Introductionmentioning

confidence: 99%

Plant Growth Response to Atmospheric Air Plasma Treatments of Seeds of 5 Plant Species

et al. 2016

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We have investigated plant growth response to atmospheric air plasma treatments of seeds on their growth for 5 plant speces; Radish sprout (Raphanus sativus L.), rice (Oryza Sativa), Zinnia, Arabidopsis L. Thaliana and Plumeri. The average length of Radish sprout, rice, Arabidopsis Thaliana, Plumeria and Zinnia, are 250%, 80%, 60%, 30% and 20% longer than those without plasma treatments, respectively. We have obtained correlation between the growth enhancement and O 3 and NO x concentration. The optimum radical dose for the growth enhancement depends on plant species.

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Plasma agriculture

Cited by 80 publications

References 46 publications

Mycotoxin Decontamination of Food: Cold Atmospheric Pressure Plasma versus “Classic” Decontamination

Mycotoxin Decontamination of Food: Cold Atmospheric Pressure Plasma versus “Classic” Decontamination

Plasma agriculture based on quantitative monitoring of reactions between fungal cells and atmospheric-pressure plasmas

Plant Growth Response to Atmospheric Air Plasma Treatments of Seeds of 5 Plant Species

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