plasma activated water
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2022 ◽  
Vol 293 ◽  
pp. 110650
Author(s):  
Kai-Ping Cong ◽  
Ting-Ting Li ◽  
Cai-E Wu ◽  
Kai-Fang Zeng ◽  
Jian-Hao Zhang ◽  
...  

Foods ◽  
2022 ◽  
Vol 11 (1) ◽  
pp. 133
Author(s):  
Yawei Wang ◽  
Yuchang Liu ◽  
Man Li ◽  
Meng Ma ◽  
Qingjie Sun

Enhancing the quality retention of fresh noodles remains challenging. In this study, we investigated the effect of dough mixing with plasma-activated water (PAW) of different activation times on the storage stability and quality characteristics of fresh noodles. It was found that the total plate count in the fresh noodles prepared by PAW (PAWN) showed no obvious inhibition during storage at 25 °C, but could be significantly reduced at 4 °C as compared with the control. The decrease in L* value and pH of the PAWN was significantly retarded during storage, indicating an enhanced storage stability. The stability time of dough mixed with PAW could be significantly improved. PAW treatment decreased the viscosity properties and setback value of starch, while enhancing the interaction of water and non-water components in fresh noodles. In addition, dynamic polymerization and depolymerization of proteins were detected in Size-Exclusion High-Performance Liquid Chromatography (SE-HPLC) profiles of PAWN. The hardness and adhesiveness of the cooked noodles decreased, while the springiness significantly increased. These results implied the potential of PAW in improving the storage stability and quality of fresh noodles.


2021 ◽  
Vol 2021 ◽  
pp. 1-12
Author(s):  
Rajesh Prakash Guragain ◽  
Suman Prakash Pradhan ◽  
Hom Bahadur Baniya ◽  
Bishnu Prasad Pandey ◽  
Niroj Basnet ◽  
...  

The present study reports the generation of plasma-activated water (PAW) using dielectric barrier discharge (DBD), its physicochemical properties, and its potential impact on the seed germination and seedling growth of soybean. The results revealed significant changes in physical parameters, such as pH, total dissolved solids, total suspended solids, turbidity, conductivity, dissolved oxygen, and chemical parameters, such as calcium, chromium, sodium, manganese, nitrate, nitrites, phosphorus, and sulfur and biological parameter such as E. coli in water after plasma treatment. The concentration of dissolved oxygen, conductivity, nitrate, nitrite, and sulfur was increased with an increase in water treatment time, and the amounts of the other analyzed parameters decreased with the increase in water treatment time. The effects of untreated water and plasma-activated water treated for 20 minutes on soybean germination and growth were studied. The germination rate was found to be higher with plasma-treated water. Shoot lengths, seedlings length, vigor index, and germination rates were increased as compared to those germinated by normal water irrigation. The seedlings irrigated with PAW responded to the abundance of nitrogen by producing intensely green leaves because of their increased chlorophyll a as compared to seedlings irrigated with normal water. However, the content of chlorophyll b and carotenoids was found to decrease in the case of seedlings irrigated with PAW. Based on this report, we conclude that PAW could be used to substantially enhance seed germination and seedling growth.


Molecules ◽  
2021 ◽  
Vol 26 (24) ◽  
pp. 7691
Author(s):  
Doaa Abouelenein ◽  
Simone Angeloni ◽  
Giovanni Caprioli ◽  
Jessica Genovese ◽  
Ahmed M. Mustafa ◽  
...  

Plasma activated water (PAW) has proven to be a promising alternative for the decontamination of rocket leaves. The impact of PAW on the volatile profile, phytosterols, and pigment content of rocket leaves was studied. Leaves were treated by PAW at different times (2, 5, 10, and 20 min). Compounds of the headspace were detected and quantified using GC–MS analysis. A total of 52 volatile organic compounds of different chemical classes were identified. Glucosinolate hydrolysis products are the major chemical class. PAW application induced some chemical modifications in the volatile compounds. Changes in the content of the major compounds varied with the increase or decrease in the treatment time. However, PAW-10 and -2 were grouped closely to the control. A significant decrease in the content of β-sitosterol and campesterol was observed after PAW treatment, except for PAW-10, which showed a non-significant reduction in both compounds. A significant increase in β carotene, luteolin, and chlorophyll b was observed after the shortest treatment time of PAW-2. A reduction in chlorophyll content was also observed, which is significant only at longer treatment, or PAW-20. Overall, PAW has proven to be a safe alternative for rocket decontamination.


Foods ◽  
2021 ◽  
Vol 10 (12) ◽  
pp. 3067
Author(s):  
Oscar Daniel Rangel-Huerta ◽  
Lada Ivanova ◽  
Silvio Uhlig ◽  
Morten Sivertsvik ◽  
Izumi Sone ◽  
...  

Fresh baby spinach leaves are popular in salads and are sold as chilled and plastic-packed products. They are of high nutritional value but very perishable due to microbial contamination and enzymatic browning resulting from leaf senescence. Therefore, innovative food processing methods such as plasma-activated water (PAW) treatment are being explored regarding their applicability for ensuring food safety. PAW’s impact on food quality and shelf-life extension has, however, not been investigated extensively in vegetables so far. In the present study, a comprehensive metabolomic analysis was performed to determine possible changes in the metabolite contents of spinach leaves stored in a refrigerated state for eight days. Liquid chromatography high-resolution mass spectrometry, followed by stringent biostatistics, was used to compare the metabolomes in control, tap-water-rinsed or PAW-rinsed samples. No significant differences were discernible between the treatment groups at the beginning or end of the storage period. The observed loss of nutrients and activation of catabolic pathways were characteristic of a transition into the senescent state. Nonetheless, the presence of several polyphenolic antioxidants and γ-linolenic acid in the PAW-treated leaves indicated a significant increase in stress resistance and health-promoting antioxidant capacity in the sample. Furthermore, the enhancement of carbohydrate-related metabolisms indicated a delay in the senescence development. These findings demonstrated the potential of PAW to benefit food quality and the shelf-life of fresh spinach leaves.


AIP Advances ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 125304
Author(s):  
Rajesh Prakash Guragain ◽  
Hom Bahadur Baniya ◽  
Suman Prakash Pradhan ◽  
Bishnu Prasad Pandey ◽  
Deepak Prasad Subedi

Author(s):  
Eleni Asimakopoulou ◽  
Sotiriοs Ι. Εkonomou ◽  
Pagona Papakonstantinou ◽  
Olena Doran ◽  
Alexandros Ch. Stratakos

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