scholarly journals Application of dielectric barrier discharge for improving food shelf life and reducing spoilage

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Subrata Roy ◽  
Bhaswati Choudhury ◽  
Judith Johnson ◽  
Alexander Schindler-Tyka
Keyword(s):  
Shelf Life ◽  
Dielectric Barrier Discharge ◽  
Ozone Concentration ◽  
Barrier Discharge ◽  
Ozone Generator ◽  
Ozone Therapy ◽  
Processing Technologies ◽  
Dielectric Barrier ◽  
Daily Exposure ◽  
Log Reduction

AbstractDielectric Barrier Discharge (DBD) based ozone therapy is an attractive non-thermal, additive-free and environment-friendly alternative to traditional food processing technologies. Its practical application is dependent on economical ozone generation and optimum ozone dosage. This study investigates the one-time and periodic application of a compact (48 cu. cm), lightweight (55 g), low power, low temperature, DBD ozone generator for treatment of spoilage inocula prepared from combinations of spoiled green beans, grape tomatoes, lettuce and strawberries. A one-time exposure of 126–136 ppm of average ozone concentration produced by the DBD generator over 3 min and 15 min resulted in at least 1 and 4 log reduction, respectively, in microbial colonies present in the spoilage inocula. Daily exposure of 128.7 ppm average ozone concentration over 3 min under similar conditions showed that inhibition through periodic exposure can successfully inhibit the growth of both bacteria and mold species with at least 5 log reduction of microbial colonies. Visual inspection of whole fruits and vegetables with similar 3-min daily exposure showed the potential of ozone therapy to at least double the shelf-life of food products. For the daily exposures, energy required by the DBD ozone generator was calculated as 0.39 $$\pm $$ ± 0.06 kJ/day.

Design an Ozone Generator by Using Dielectric Barrier Discharge

2012 ◽  
Vol 15 (1) ◽  
pp. 89-94
Author(s):  
Hamid H. Al-Jobouri ◽  
◽  
Hadeel O. Ismaeel ◽  
Keyword(s):  
Dielectric Barrier Discharge ◽  
Barrier Discharge ◽  
Ozone Generator ◽  
Dielectric Barrier

Degradation of Aqueous 3, 4-Dichloroaniline by Wire-Cylinder Dielectric Barrier Discharge Reactor

2012 ◽  
Vol 518-523 ◽  
pp. 1729-1732
Author(s):  
Jing Wei Feng ◽  
Chao Shi ◽  
Fang Fang Ding ◽  
Wen Jing Wang
Keyword(s):  
Dielectric Barrier Discharge ◽  
Ozone Concentration ◽  
Barrier Discharge ◽  
Ph Value ◽  
Input Power ◽  
Degradation Efficiency ◽  
Solution Ph ◽  
Dielectric Barrier ◽  
Ph Values ◽  
Dielectric Barrier Discharge Reactor

Degradation of aqueous 3, 4-dichloroaniline (3, 4-DCA) by wire-cylinder dielectric barrier discharge reactor was carried out in the present paper. Generation of reactive species was analyzed, changes of aqueous ozone concentration and solution pH values were examined; meanwhile, the effect of input power and initial pH value on the degradation efficiency of 3, 4-DCA were investigated. The results showed that the degradation efficiency of 3, 4-DCA increased with increasing input power when the input power was increased from 70 W to 90 W, while it decreased with increasing input power when the input power was increased from 90 W to 110 W; and the same changing trend was observed in the change of aqueous ozone concentration. At alkaline conditions and acidic conditions, 3, 4-DCA degradation rate was significantly higher than that of neutrality conditions. In addition, there was a remarkable decline of the solution pH values during 3, 4-DCA degradation.

scholarly journals Dielectric Barrier Discharge Induced By Permanent Magnet In Attraction And Repulsion Conditions For Ozone Generator

2020 ◽  
Vol 3 (1) ◽  
pp. 6-12
Author(s):  
Fri Murdiya ◽  
Ivan Saputra
Keyword(s):  
Dielectric Barrier Discharge ◽  
High Voltage ◽  
Ozone Concentration ◽  
Waste Treatment ◽  
Barrier Discharge ◽  
Drinking Water Treatment ◽  
Dielectric Barrier ◽  
Attraction Model ◽  
Magnetic Filed ◽  
Iv Model

Ozone is used in various area including medicine, drinking water treatment and waste treatment. Ozone can be produced using dielectric barrier discharge which is supplied by high voltage. High voltage occurs in the dielectric barrier discharge such as air gap that it is as a result of the failure of air in maintaining its insulator properties. Power supply used in this study is a parallel resonant push-pull inverter using a fly back transformer. In order to produce good plasma in producing ozone, a magnetic filed is added to dielectric barrier discharge. In this study, a magnet was placed on each anode and cathode electrode with the condition of attraction (model I) and repulsion (model II). The addition of two magnets to each electrode was also carried out under the conditions of attraction (model III) and repulsion (model IV). It is shown that the plasma intensity in the model I and III was higher than model II and IV. The discharge current in the model I and III was higher than model II and IV. The highest ozone concentration was model III and the lowest ozone concentration was in model IV. Model I had a higher ozone concentration than model II. 

scholarly journals PENGARUH PENERAPAN OZON DARI DOUBLE DIELECTRIC BARIER DISCHARGE PLASMA UNTUK MENJAGA KESEGARAN JAMUR TIRAM PUTIH (PLEUROTUS OSTREATUS )

2021 ◽  
Vol 7 (2) ◽  
pp. 371
Author(s):  
Intan Zahar ◽  
Sutriono Sutriono ◽  
Puryadi Puryadi ◽  
Syafrizal Hasibuan ◽  
Dian Puspita Sari
Keyword(s):  
Shelf Life ◽  
Dielectric Barrier Discharge ◽  
Pleurotus Ostreatus ◽  
Discharge Plasma ◽  
Barrier Discharge ◽  
Dielectric Barrier Discharge Plasma ◽  
Dielectric Barrier ◽  
Barrier Discharge Plasma ◽  
Oyster Mushrooms ◽  
Horticultural Products

ABSTRAKJamur tiram putih (Pleurotus ostreatus) merupakan salah satu produk makanan yang mudah mengalami kerusakan dan mempunyai waktu simpan pendek yaitu 1-2 hari. Produksi jamur tiram di Indonesia semakin tahun mengalami peningkatan sehingga dibutuhkan alternatif dalam menjaga umur simpan pada jamur. Salah satu teknologi yang masih terus berkembang adalah teknologi plasma ozon. Teknologi ini menggunakan plasma dingin untuk menghasilkan ozon (O3). Baru-baru ini, beberapa peneliti telah mengembangkan teknologi ozon untuk mejaga umur simpan pada produk pasca panen hortikultura. Penelitian bertujuan untuk mengetahui pengaruh penyimpanan jamur tiram putih (Pleurotus ostreatus) dengan teknologi plasma ozon yang dibangkitkan dengan teknik  Double Dielectric Barrier Discharge Plasma (DDBDP). Hasil kosentrasi ozon pada penelitian ini yaitu 65 ppm dengan kapasitas ozon sebesar 5.85 gram/jam pada flowrate 1.5 (L/min) dan tegangan 9,5 kV. Ozon dialirkan ke dalam plastik yang berisi sampel jamur pada perlakuan (5, 10, 15, 20 dan 25) menit. Berdasarkan hasil uji perubahan susut yang dilakukan, diperoleh perubahan susut tidak terlalu significant mengalami penurunan pada perlakuan ozone 20 menit dan 25 menit. Kata kunci: Jamur tiram; ozone; Double Dielectric Barrier Discharge Plasma; produk hortikultura ABSTRACTWhite oyster mushroom (Pleurotus ostreatus) is a food product that is easily damaged and has a short shelf life of 1-2 days. The production of oyster mushrooms in Indonesia is increasing every year so that an alternative is needed to maintain the shelf life of mushrooms. One technology that is still developing is plasma ozone technology. This technology uses cold plasma to produce ozone (O3). Recently, several researchers have developed ozone technology to maintain shelf life in post-harvest horticultural products. This study aims to determine the effect of storing white oyster mushrooms (Pleurotus ostreatus) with ozone plasma technology generated by the Double Dielectric Barrier Discharge Plasma (DDBDP) technique. The results of the ozone concentration in this study were 65 ppm with an ozone capacity of 5.85 grams/hour at a flowrate of 1.5 (L/min) and a voltage of 9.5 Kv. Ozone was flowed into a plastic containing mushroom samples in the treatment (5,10,15, 20 and 25) minutes. Based on the results of the shrinkage change test carried out, it was found that the shrinkage change was not too significant and decreased in the 20 minute and 25 minute ozone treatment Keywords: Oyster mushroom; ozone; Double Dielectric Barrier Discharge Plasma; horticultural products.

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