Cold Plasma

Cavalcanti, R. M.; Pimentel, Tatiana Colombo; Esmerino, Erick A.; Freitas, Mônica Q.; Verruck, Silvani; Silva, Márcia Cristina; Cruz, Adriano G.

doi:10.1002/9781119776376.ch4

Cited by 2 publications

(5 citation statements)

References 175 publications

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“…Other ways include the use of jet plasma (a jet plasma system is connected to a power source, which induces ionization in the surrounding gas) and microwave plasma (plasma torches with two dielectric tubes that let the gas pass through). In the case of CP, so-called non-thermal discharges are used [30,72,92]. The two main types of non-thermal discharge at atmospheric pressure are corona discharge and dielectric barrier discharge (DBD) [93].…”

Section: Principles Types and Sources Of Cold Plasma Productionmentioning

confidence: 99%

“…CP emits light with wavelengths in both the visible and ultraviolet spectral regions. In addition to the emission of UV radiation (wavelength range: 100-380 nm), an important property of low-temperature plasma is the presence of high-energy, highly reactive electrons, which cause several chemical and physical processes such as oxidation, the The most important parameters influencing the CP process are the plasma generation voltage or power (higher power increases the electron density, generating more reactive species capable of interacting with the matrix to be treated), the amount of material to be treated (efficiency decreases as the amount increases), the duration of exposure (time), the gas pressure (affects the rate of plasma volatilization), the gas flow rate (higher gas flow rate can improve treatment efficiency), and the type of feed gas used [30,92]. The degree to which reactive species are produced depends crucially on the gas used to generate the plasma (working gas).…”

Section: Principles Types and Sources Of Cold Plasma Productionmentioning

confidence: 99%

“…The extraction yield of plant components can be affected by several factors [30,76,92], including the level of disruption of the cell wall, CP process parameters (type of extraction method), plant species, material surfaces, and composition of the bioactive compounds that occurred in the plant (Table 3). It has been demonstrated that CP treatment can cause changes in the surface physical properties of the plant matrix, with the formation of cracks and depressions on its surface that allow better outward release of the compounds of interest, thus increasing the extraction yield.…”

Section: Mode Of Action Of Cold Plasma On the Plant Matrix And Its Cr...mentioning

confidence: 99%

“…Any chemical changes in the profile of these compounds, such as oxidative degradation and the cleavage of double bonds by reactive oxygen species generated through CP treatment, such as OH . , O 3 , and O − 2 , may increase or decrease the antioxidant capacity of the extract [77,92,143].…”

Section: Antioxidant Capacitymentioning

confidence: 99%

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Cold Plasma-Assisted Extraction of Phytochemicals: A Review

Heydari,

Carbone,

Gervasi

et al. 2023

Foods

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In recent years, there has been growing interest in bioactive plant compounds for their beneficial effects on health and for their potential in reducing the risk of developing certain diseases such as cancer, cardiovascular diseases, and neurodegenerative disorders. The extraction techniques conventionally used to obtain these phytocompounds, however, due to the use of toxic solvents and high temperatures, tend to be supplanted by innovative and unconventional techniques, in line with the demand for environmental and economic sustainability of new chemical processes. Among non-thermal technologies, cold plasma (CP), which has been successfully used for some years in the food industry as a treatment to improve food shelf life, seems to be one of the most promising solutions in green extraction processes. CP is characterized by its low environmental impact, low cost, and better extraction yield of phytochemicals, saving time, energy, and solvents compared with other classical extraction processes. In light of these considerations, this review aims to provide an overview of the potential and critical issues related to the use of CP in the extraction of phytochemicals, particularly polyphenols and essential oils. To review the current knowledge status and future insights of CP in this sector, a bibliometric study, providing quantitative information on the research activity based on the available published scientific literature, was carried out by the VOSviewer software (v. 1.6.18). Scientometric analysis has seen an increase in scientific studies over the past two years, underlining the growing interest of the scientific community in this natural substance extraction technique. The literature studies analyzed have shown that, in general, the use of CP was able to increase the yield of essential oil and polyphenols. Furthermore, the composition of the phytoextract obtained with CP would appear to be influenced by process parameters such as intensity (power and voltage), treatment time, and the working gas used. In general, the studies analyzed showed that the best yields in terms of total polyphenols and the antioxidant and antimicrobial properties of the phytoextracts were obtained using mild process conditions and nitrogen as the working gas. The use of CP as a non-conventional extraction technique is very recent, and further studies are needed to better understand the optimal process conditions to be adopted, and above all, in-depth studies are needed to better understand the mechanisms of plasma–plant matrix interaction to verify the possibility of any side reactions that could generate, in a highly oxidative environment, potentially hazardous substances, which would limit the exploitation of this technique at the industrial level.

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Section: Principles Types and Sources Of Cold Plasma Productionmentioning

confidence: 99%

Section: Principles Types and Sources Of Cold Plasma Productionmentioning

confidence: 99%

Section: Mode Of Action Of Cold Plasma On the Plant Matrix And Its Cr...mentioning

confidence: 99%

Section: Antioxidant Capacitymentioning

confidence: 99%

See 2 more Smart Citations

Cold Plasma-Assisted Extraction of Phytochemicals: A Review

Heydari,

Carbone,

Gervasi

et al. 2023

Foods

View full text Add to dashboard Cite

show abstract

“…This enormous number of active species from chemical donors in an aqueous environment has a beneficial influence the enhanced permeability of active species in food and substantially alters the functioning of lipids, proteins, and carbohydrates in food. PAW allows for a more intense visualization of hydrogen bond rupturing, amino acid oxidation, and prosthetic group modifications [14]. RONS disrupt both cell membranes and intracellular parts, resulting in a breakdown of cell membranes.…”

Section: Introductionmentioning

confidence: 99%

Optimization of Plasma Activated Water Extraction of Pleurotus ostreatus Polysaccharides on Its Physiochemical and Biological Activity Using Response Surface Methodology

Punthi,

Yudhistira,

Gavahian

et al. 2023

Foods

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This study focused on optimizing the extraction of P. ostreatus polysaccharides (POPs) using plasma-activated water (PAW). A single factor and response surface methodology were employed to optimize and evaluate the polysaccharide yield, physiochemical characteristics, and biological activities of POPs. The observed findings were compared to those obtained by the conventional hot water extraction method (100 °C, 3 h), as the control treatment. The optimal extraction conditions were obtained at 700 W PAW power, 58 s treatment time, 1:19 sample-to-water ratio, and 15 L/min gas flow rate. In these conditions, the PAW-treated samples experienced changes in surface morphology due to plasma etching, leading to a 288% increase in the polysaccharide yield (11.67%) compared to the control sample (3.01%). Furthermore, the PAW-treated sample exhibited superior performance in terms of biological activities, namely phenolic compounds (53.79 mg GAE/100 g), DPPH scavenging activity (72.77%), and OH scavenging activity (65.03%), which were 29%, 18%, and 38% higher than those of control sample, respectively. The results highlighted the importance of process optimization and provided new evidence for PAW as an alternative approach to enhance the extraction efficiency of POPs, a novel source of natural antioxidants which enables diverse applications in the food industry.

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Cold Plasma

Cited by 2 publications

References 175 publications

Cold Plasma-Assisted Extraction of Phytochemicals: A Review

Cold Plasma-Assisted Extraction of Phytochemicals: A Review

Optimization of Plasma Activated Water Extraction of Pleurotus ostreatus Polysaccharides on Its Physiochemical and Biological Activity Using Response Surface Methodology

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