scholarly journals Effects of Atmospheric-Pressure Cold Plasma Treatment on Deoxynivalenol Degradation, Quality Parameters, and Germination of Barley Grains

2020 ◽  
Vol 10 (10) ◽  
pp. 3530 ◽  
Author(s):  
Ehsan Feizollahi ◽  
Basheer Iqdiam ◽  
Thava Vasanthan ◽  
Malinda S. Thilakarathna ◽  
M. S. Roopesh
Keyword(s):  
Relative Humidity ◽  
Moisture Content ◽  
Plasma Treatment ◽  
Atmospheric Pressure ◽  
Cold Plasma ◽  
Degradation Rate ◽  
Quality Parameters ◽  
Barley Grains ◽  
Grain Surface ◽  
Control Samples

Deoxynivalenol (DON) is one of the major trichothecene mycotoxins commonly found in grains, in particular barley. This study focused on the reduction of DON concentration on barley samples using atmospheric cold plasma (ACP) treatment. The effects of moisture content, post-treatment storage, and relative humidity of air on DON degradation on barley were evaluated. Additionally, the germination and the quality parameters of barley, including protein content, β-glucan, and moisture content, were evaluated. The results showed that ACP treatment for 6 and 10 min reduced DON concentration by 48.9% and 54.4%, respectively. No significant differences were observed in the DON degradation levels by increasing the moisture content of barley from 9.5 to 15.7 g water/100 g sample and relative humidity of air from 12 to 60%. Steeping of barley grains without subsequent drying prior to ACP treatment significantly increased the degradation rate of DON by ACP due to the presence of water on the grain surface. No significant differences were observed for the tested quality parameters of barley in comparison with control samples. This study shows that ACP may offer an effective DON reduction in barley without affecting the quality attributes. However, ACP treatment parameters should be optimized to achieve a better DON reduction efficacy.

Effect of Radio Frequency Low Pressure Cold Plasma on Total Phenol, Antioxidant Activity and Colour Degradation Kinetics of Red Chilli Pepper Powder

2021 ◽  
Vol 58 (03) ◽  
pp. 241-249
Author(s):  
Sasireka Rajendran ◽  
George Amponsah Annor ◽  
Mallikarjunan Kumar ◽  
Ganapathy Shunmugam
Keyword(s):  
Antioxidant Activity ◽  
Moisture Content ◽  
Radio Frequency ◽  
Plasma Treatment ◽  
Cold Plasma ◽  
Degradation Kinetics ◽  
Quality Parameters ◽  
Total Phenol ◽  
Chilli Pepper ◽  
Pepper Powder

The study was aimed to analyse the effect of low pressure cold plasma treatment [operated at 60.8 kPa on the quality parameters of red chilli pepper powder (RCPP)]. The experiments were conducted at two radio frequency power levels (60 W, 120 W) over a time range from 0 to 10 min. Total phenols, antioxidant activity, colour, and moisture content were determined. Results showed that radio frequency operating power and treatment time had significant negative effects (p < 0.05) on the quality parameters analysed. Cold plasma treatment reduced the redness, total phenol content, moisture content, and increased the antioxidant activity of the RCPP. Changes in the quality of the treated samples, especially the colour degradation were significant after 4 min of treatment. Degradation kinetics was determined for parameters studied to ascertain their order of reaction during cold plasma treatment. The order of reaction was decided from best fit models with the highest R2 , minimum bias, and error sum of squares. Total phenol followed a zero-order, whereas antioxidant activity and colour followed first-order reactions. The study explored the possibilities and impact of using cold plasma for powdered food materials.

scholarly journals In-package atmospheric pressure cold plasma treatment of cherry tomatoes

2014 ◽  
Vol 118 (2) ◽  
pp. 177-182 ◽  
Author(s):  
Nrusimha Nath Misra ◽  
Kevin M. Keener ◽  
Paula Bourke ◽  
Jean-Paul Mosnier ◽  
Patrick J. Cullen
Keyword(s):  
Plasma Treatment ◽  
Atmospheric Pressure ◽  
Cold Plasma ◽  
Cherry Tomatoes

An evaluation of anti-oxidative protection for cells against atmospheric pressure cold plasma treatment

2012 ◽  
Vol 100 (12) ◽  
pp. 123701 ◽  
Author(s):  
Ruonan Ma ◽  
Hongqing Feng ◽  
Fangting Li ◽  
Yongdong Liang ◽  
Qian Zhang ◽  
...  
Keyword(s):  
Plasma Treatment ◽  
Atmospheric Pressure ◽  
Cold Plasma ◽  
Oxidative Protection

scholarly journals Functionalization of 3D Polylactic Acid Sponge Using Atmospheric Pressure Cold Plasma

2019 ◽  
Vol 2019 ◽  
pp. 1-11 ◽  
Author(s):  
G. Gatti ◽  
D. D’Angelo ◽  
M. Errahali ◽  
M. Biasizzo ◽  
L. Marchese ◽  
...  
Keyword(s):  
Plasma Treatment ◽  
Atmospheric Pressure ◽  
Cold Plasma ◽  
Plasma Deposition ◽  
Sample Surface ◽  
Research Area ◽  
Porous Scaffolds ◽  
Pulsed Plasma ◽  
Deuterated Water ◽  
3D Scaffold

The deposition of organic functionalities on biomaterials to immobilize biomolecules is a research area of great interest in the medical field. The surface functionalization of a 3D porous scaffolds of PDLLA with carboxyl (-COOH) and amino (-NH2) groups by cold plasma treatment at atmospheric pressure is described in this paper. Two methods of continuous and pulsed plasma deposition were compared to assess the degree of functionalization of the internal porous 3D scaffold. In particular, the pulsed plasma treatment was found to functionalize uniformly not only the sample surface but also inside the open cavities thanks to its permeability and diffusion in the porous 3D scaffold. The species developed in the plasma were studied by optical emission spectroscopy (OES) technique, while the functionalization of the sponges was evaluated by the Diffuse Reflectance Fourier-Transform Infrared Spectroscopy (DR-FTIR) technique using also the adsorption of ammonia (NH3) and deuterated water (D2O) probe molecules. The functional groups were deposited only on the front of the sponge, then the structural characterization of both front and back of the sponge has demonstrated the uniform functionalization of the entire scaffold.

scholarly journals Hygroscopicity of Longitudinally Compressed Wood

2017 ◽  
Vol 13 (2) ◽  
pp. 135-144 ◽  
Author(s):  
Mátyás Báder ◽  
Róbert Németh
Keyword(s):  
Relative Humidity ◽  
Moisture Content ◽  
Beech Wood ◽  
Research Work ◽  
Modification Method ◽  
Vapour Adsorption ◽  
Long Time ◽  
The Difference ◽  
Compressed Wood ◽  
Control Samples

AbstractKnowledge of hygroscopicity is extremely important both in the use of native wood and modified wood. In this study, the modification method was steaming at 100 °C, then longitudinal compression at a rate of 20%. The moisture content (MC) of treated and untreated green beech wood (Fagus sylvaticaL.) was reduced in a climate chamber with gradual reduction of air humidity at 20 °C. The difference of calculated fibre saturation points between control samples and samples compressed for a long time was 6% (MC%). In the course of desorption, this difference decreased, and finally disappeared at 10% moisture content (40% relative humidity). In the second step of the research work, the speed of vapour adsorption was checked. The absolute dry samples were placed in air with 95% relative humidity. The highest deviation in the moisture content was 1% (MC%) between the control and the compressed samples. The compressed wood dries faster than the control samples under the same conditions. Furthermore, during adsorption, the moisture content of the compressed samples at room conditions is lower.

Oxygen Plasma Treatment of Rubber Surface by the Atmospheric Pressure Cold Plasma Torch

1997 ◽  
Vol 36 (Part 1, No. 5A) ◽  
pp. 2888-2891 ◽  
Author(s):  
Bong-ju Lee ◽  
Yukihiro Kusano ◽  
Nobuko Kato ◽  
Kazuo Naito ◽  
Takao Horiuchi ◽  
...  
Keyword(s):  
Plasma Treatment ◽  
Atmospheric Pressure ◽  
Plasma Torch ◽  
Cold Plasma ◽  
Oxygen Plasma ◽  
Oxygen Plasma Treatment ◽  
Rubber Surface
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