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 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.

scholarly journals Effect of cold plasma treatment on physico-chemical parameters and antioxidant activity of minimally processed kiwifruit

2015 ◽  
Vol 107 ◽  
pp. 55-65 ◽  
Author(s):  
Ileana Ramazzina ◽  
Annachiara Berardinelli ◽  
Federica Rizzi ◽  
Silvia Tappi ◽  
Luigi Ragni ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Plasma Treatment ◽  
Cold Plasma ◽  
Chemical Parameters ◽  
Minimally Processed ◽  
Physico Chemical

scholarly journals The Effect of Cold Plasma Pretreatment on Water-Suspended Herbs Measured in the Content of Bioactive Compounds, Antioxidant Activity, Volatile Compounds and Microbial Count of Final Extracts

Antioxidants ◽  
2021 ◽  
Vol 10 (11) ◽  
pp. 1740
Author(s):  
Ewelina Pogorzelska-Nowicka ◽  
Monika Maria Hanula ◽  
Marta Brodowska-Trębacz ◽  
Elżbieta Górska-Horczyczak ◽  
Urszula Jankiewicz ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Plasma Treatment ◽  
Volatile Compounds ◽  
Bioactive Compounds ◽  
Cold Plasma ◽  
New Technology ◽  
Echinacea Purpurea ◽  
Extraction Process ◽  
Extraction Yield ◽  
Microbial Count

Cold plasma is a new technology of promising potential to use as a part of technological extraction lines constructed to implement green chemistry solutions or simply to reduce resources in solvent-based extraction lines. The present study was undertaken to verify the effect of nitrogen cold plasma pre-treatment conducted for 8 min (20 kHz) on the content of antioxidants, antioxidant activity, the profile of volatile compounds, microbial count, pH and color measured in herb extracts (12 herbs: Echinacea purpurea; Salvia officinalis; Urtica dioica; Polygonum aviculare; Vaccinium myrtillus; Taraxacum officinale; Hypericum perforatum; Achillea millefolium; Sanguisorba officinalis; Leonurus cardiaca; Ballota nigra; Andrographis paniculata) obtained with its usage. The surface morphology of extracted herbs was examined as well. Herbs used for extraction were ground and suspended in water before cold plasma treatment, which is a novel approach not studied before. Most plasma-treated extracts were characterized by a higher content of polyphenols (11 out of 12). Content of flavonoids and anthocyanins increased in four extracts and in the case of anthocyanins was significantly higher in comparison to control (up to 77%). The antioxidant activity measured at least by one method (ABTS, DPPH, FRAP) was also higher in nine plasma-treated solutions. Moreover, plasma decreased total aerobic bacteria, affected the color and increased pH of the extracts. The surface structure of the plant material after the extraction process was significantly damaged, which probably led to a higher extraction yield of bioactive compounds and in consequence to the higher antioxidant activity of extracts obtained with the cold plasma treatment.

scholarly journals Elimination of Aspergillus flavus from Pistachio Nuts with Dielectric Barrier Discharge (DBD) Cold Plasma and Its Impacts on Biochemical Indices

2021 ◽  
Vol 2021 ◽  
pp. 1-12
Author(s):  
Mina Makari ◽  
Mohammad Hojjati ◽  
Samira Shahbazi ◽  
Hamed Askari
Keyword(s):  
Antioxidant Activity ◽  
Plasma Treatment ◽  
Aspergillus Flavus ◽  
Cold Plasma ◽  
Phenolic Content ◽  
Barrier Discharge ◽  
Total Phenolic ◽  
Dielectric Barrier ◽  
Pistachio Nuts ◽  
Spore Population

In the present research, the effects of different durations (0, 15, 30, 60, 90, 120, 150, and 180 sec) of dielectric barrier discharge (DBD) cold plasma on decontaminating Aspergillus flavus, detoxifying pure aflatoxin B1 (AFB1), and the quality attributes of pistachio nuts (total phenolic content, antioxidant activity, chlorophylls, total carotenoids, instrumental color, total soluble protein, and malondialdehyde determination) were studied. The results showed that the viable spore population reduced with the increase of plasma treatment duration, so that after 180 s of the treatment, a decrease by 4 logs was observed in the spore population. Chlorophyll a and b, as well as total carotenoid levels and color parameters, decreased, which led to darker pistachio samples and intensity reduction in soluble protein content and protein bands. Plasma treatment did not alter the total phenolic content but slightly increased the antioxidant activity of pistachio nuts samples. The malondialdehyde values significantly increased all the plasma treatment durations. The maximum reduction of AFB1 was observed after 180 s of the treatment, which was 64.63% and 52.42% for glass slides and pistachio nut samples, respectively. The present findings demonstrated that cold plasma could be used as an efficient decontamination method of food products without inducing undesirable quality changes in nuts.

scholarly journals DETERMINATION OF QUALITY PARAMETERS AND TEST ANTIOXIDANT ACTIVITIES OF 70% ETHANOL EXTRACT OF SEROJA LEAVES (NELUMBO NUCIFERA GAERTN.)

2021 ◽  
pp. 30-33
Author(s):  
RATNA DJAMIL ◽  
DIAH KARTIKA PRATAMI ◽  
FEBI AYU PUTRI ◽  
THALIA BREBA OCTAVIA
Keyword(s):  
Antioxidant Activity ◽  
Antioxidant Capacity ◽  
Radical Scavenging ◽  
Ethanol Extract ◽  
Quality Parameters ◽  
Medicinal Herb ◽  
Nelumbo Nucifera ◽  
Total Phenol ◽  
Antioxidant Power

Objective: The purpose of this study was to evaluated the quality parameters and analyzed the antioxidant activity of seroja leaves Nelumbo nucifera Gaertn. Methods: The quantification of the chemical compound was determined by its total phenol and flavonoid levels. The evaluate the antioxidant activity was determined by the comparability of the four common radical scavenging assays using 2,2′-azino-bis-3-ethylbenzthiazoline-6-sulphonic acid (ABTS); 1, 1-diphenyl-2-picrylhydrazyl (DPPH) radical; cupric ion reducing antioxidant capacity (CUPRAC); ferric reducing antioxidant power (FRAP); and 2-thiobarbituric acid (TBA) methods. Results: The results of phytochemical screening for simplicia powder and 70% ethanol extract of seroja leaves contain secondary metabolites of alkaloids, flavonoids, saponins, tannins, coumarin, quinones, and triterpenoid steroids. The results of the determination of the quality parameters meet the requirements of quality and safety standard of the medicinal herb. The result of the determination of total phenol content from 70% ethanol extract of Seroja leaves was 181.62±0.82 mg GAE/g extract. The results of the determination of total flavonoid levels from 70% ethanol extract of seroja leaves amounted to 289.83±1.04 mg QE/g extract. The results of antioxidant activity tests using the ABTS, DPPH, and TBA methods showed IC50 respectively 287.7 mg/l, 22.3 mg/l, and 352.6 mg/l and CUPRAC and FRAP methods had an antioxidant capacity of 160.76±0.35 and 253.36±0.48 mg AAE/g extract. Conclusion: Seroja leaves (Nelumbo nucifera Gaertn.) have the potential to be used as an antioxidant medicinal herb and its extract meet the standard of quality control and safety.

scholarly journals Influence of Combined Effect of Ultra-Sonication and High-Voltage Cold Plasma Treatment on Quality Parameters of Carrot Juice

Foods ◽  
2019 ◽  
Vol 8 (11) ◽  
pp. 593 ◽  
Author(s):  
Umair Muhammad ◽  
Jabbar Saqib ◽  
Ahmed M. Senan ◽  
Tayyaba Sultana ◽  
Mustapha M. Nasiru ◽  
...  
Keyword(s):  
Plasma Treatment ◽  
Chlorogenic Acid ◽  
High Voltage ◽  
Cold Plasma ◽  
Quality Parameters ◽  
Combined Effect ◽  
Plate Count ◽  
Carrot Juice ◽  
Dbd Plasma ◽  
Total Carotenoids

Influence of the combined effect of ultra-sonication (US) and high-voltage cold plasma treatment (HVCP) on the quality parameters of fresh carrot juice has been studied. During the treatment of ultra-sonication, carrot juice was subjected to a 0.5 inch probe for 3 min by adjusting the pulse duration 5 s on and off at 20 kHz frequency, amplitude level 80%. The ultrasound intensity was measured by using a thermocouple and was 46 Wcm−2. The temperature was maintained at 10 °C by an automatic control unit. During the treatment of HVCP, carrot juice was then subjected to dielectric barrier discharge (DBD) plasma discharge at 70 kV voltage for 4 min. Significant increases were observed when HVCP treated carrot juice was tested against total carotenoids, lycopene, and lutein when compared to the control treatments. Moreover, this increase was raised to its highest in all pigments, chlorogenic acid, sugar contents, and mineral profile, as the results of ultra-sonication when combined with high voltage atmospheric cold plasma (US-HVCP). Whereas, a significant decreased was observed in Mg, total plate count, yeast, and mold after US-HVCP treatment. Furthermore, results indicated that the combined effect of US-HVCP treatment has improved the quality and led to a higher concentration of lycopene, lutein, chlorogenic acid, and mineral compounds (Na, K, and P). Therefore, the findings of the current study suggested that US-HVCP treatment is a novel combined technique that could provide better quality and more stability during the processing of carrot juice with better physicochemical properties and bio-available nutrients, so this novel processing technique could serve as an alternative to traditional processes.

scholarly journals Cold Plasma Treatment on Mustard Green Seeds and its Effect on Growth, Isothiocyanates, Antioxidant Activity and Anticancer Activity of Microgreens

2021 ◽  
Vol 25 (03) ◽  
pp. 667-676
Author(s):  
Worachot Saengha
Keyword(s):  
Antioxidant Activity ◽  
Plasma Treatment ◽  
Anticancer Activity ◽  
Cold Plasma ◽  
Allyl Isothiocyanate ◽  
Total Phenolic ◽  
Anticancer Properties ◽  
Bioactive Content ◽  
Mustard Green ◽  
Mcf 7

The aims of this work were to study growth, isothiocyanate (ITC), bioactive content, antioxidant activity and anticancer activity of mustard green (MG) microgreens grown from seeds treated with cold plasma at 21 and 23 kV for 5 min. Microgreens from plasma-treated seeds at 23 kV showed almost 2-fold increased ITC content (1.57 ± 0.05 mmol/100 g DW) compared to MG from seeds without plasma (control), showed the highest total phenolic content (TPC) (6.76 ± 0.14 mg GAE/g DW) and total flavonoid content (TFC) (0.16±0.01 mg RE/g DW). However, MG plasma-treated seeds at 21 kV showed the highest antioxidant activity from 2,2-Diphenyl-1-picrylhydrazyl (DPPH) assay (3.51 ± 0.38 mg TE/g DW). Allyl isothiocyanate and 3-butenyl isothiocyanate were the dominant ITCs in MG. The highest cytotoxicities using 3-(4,5-Dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay against MCF-7 (IC50 of 32.44 ± 1.64 μg/mL) and HepG2 (IC50 of 28.58 ± 1.04 μg/mL) after 72 h exposure were found in MG from plasma-treated seeds at 23 kV and MG from control seeds, respectively. However, MG from plasma-treated seeds at 21 kV exhibited the highest antiproliferative effect against MCF-7 (IC50 of 23.23 ± 0.23 μg/mL) and HepG2 (IC50 of 20.44 ± 0.56 μg/mL) for 14 days and also the most potent antimigratory effect. MG from cold plasma inhibited MMP-9 protein expression in both cancers indicating antimigratory property. MG from cold plasma also significantly reduced MMP-9 mRNA expression in both cancers when compared to the control and untreated cells. In conclusion, cold plasma treatment on seeds seemed to be an innovative tool to enhance ITC, TPC, TFC and anticancer properties of MG microgreens for better health implications. © 2021 Friends Science Publishers

Cold plasma treatment induces phenolic accumulation and enhances antioxidant activity in fresh-cut pitaya (Hylocereus undatus) fruit

LWT ◽  
2019 ◽  
Vol 115 ◽  
pp. 108447 ◽  
Author(s):  
Xiaoan Li ◽  
Meilin Li ◽  
Nana Ji ◽  
Peng Jin ◽  
Jianhao Zhang ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Plasma Treatment ◽  
Cold Plasma ◽  
Fresh Cut ◽  
Hylocereus Undatus
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