scholarly journals The application of ozonated water to maintain the quality of tuna meat: the effect of contact time, contact temperature and ozone dosage

2019 ◽  
Vol 509 ◽  
pp. 012004
Author(s):  
Eva Fathul Karamah ◽  
Adlimatul Putri Ilmiyah ◽  
Nadifa Ismaningtyas
Keyword(s):  
Contact Time ◽  
Contact Temperature ◽  
Ozonated Water

REORGANIZATION OF A MULTI-SPECIALTY HOSPITAL IN AN UNFAVORABLE EPIDEMIOLOGICAL SITUATION

2020 ◽  
pp. 43-46
Author(s):  
Nikitin A.E. ◽  
Znamenskiy I.А ◽  
Shikhova Yu.A. ◽  
Kuzmina I.V. ◽  
Melchenko D.S. ◽  
...  
Keyword(s):  
Contact Time ◽  
Laboratory Diagnostics ◽  
Protective Equipment ◽  
Timely Manner ◽  
High Quality ◽  
Institu Tions ◽  
Quality Of Medical Care ◽  
Spread Of Infection ◽  
Epidemiological Situation

This study provides a retrospective analysis of work to ensure high quality of medical care in an unfavorable epidemic situation. The consequence of COVID-19 was the implementation of a program to prevent the spread of infection, the re-profiling of medical institu-tions, and the introduction of restrictive and anti-epidemic measures. The experience of our work has shown the effectiveness of changing the order of med-ical care, the organization of the functioning of de-partments and patient routing. The study reflects the measures implemented in the hospital departments, the Department of clinical and laboratory diagnostics, radiation diagnostics and pathology Department. To ensure the safety of patients, it was decided to place patients on a single bed according to the type of infec-tious boxes. The safety of employees was ensured by the use of personal protective equipment, minimiza-tion of contact time with patients, and preventive weekly examination of staff for SARS-CoV-2 infection. The organized and well-coordinated work of the en-tire staff of the institution made it possible to prevent the spread of COVID-19 among employees, to detect cases of infection in a timely manner, and to carry out appropriate isolation and monitoring measures. At the time of completion of infectious diseases departments, the mortality rate among patients was less than 9%. Our experience in reorganizing a multi-specialty facil-ity can be used in the future when working with pa-tients who have undergone COVID-19, as well as in the context of a worsening epidemic situation.

Ozonated water applied in grapevines is a new agronomic practice that affects the chemical quality of wines

2021 ◽  
Author(s):  
M. Mercedes García-Martínez ◽  
Ana Campayo ◽  
Natalia Moratalla-López ◽  
Kortes Serrano de la Hoz ◽  
Gonzalo L. Alonso ◽  
...  
Keyword(s):  
Chemical Quality ◽  
Ozonated Water

Algicidal and Bactericidal Effect of Potassium Monopersulfate Compound on Eutrophic Water

2014 ◽  
Vol 707 ◽  
pp. 259-262 ◽  
Author(s):  
Ming Song Wu ◽  
Xin Yang Xu ◽  
Xun Xu ◽  
Yue Ting Zeng ◽  
Jing Nan Zhang ◽  
...  
Keyword(s):  
Contact Time ◽  
Influence Factors ◽  
Bactericidal Effect ◽  
Major Influence ◽  
Treatment Efficiency ◽  
Compound A ◽  
Eutrophic Water ◽  
Landscape Water ◽  
Algae And Bacteria

Algae and bacteria blooms in eutrophication in summer have made the quality of landscape water degradation. Treatment efficiency of potassium monopersulfate compound, a new kind of oxidation reagent, on killing algae and bacteria has been valued and the effect of influence factors, such as dosage, contact time and temperature are also discussed. The results indicated that potassium monopersulfate is appropriate for killing algae and bacteria in landscape water, dosage and contact time are the major influence factors. The contact time should be longer than 20min and the algicidal rate is higher when the temperature is above 20°C.

scholarly journals The Chlorine Reduction in Edamame by Water-Ozonated Minimally Process

2021 ◽  
Vol 1 (3) ◽  
Author(s):  
Silvia Oktavia Nur Yudiastuti ◽  
Rizza Wijaya
Keyword(s):  
Contact Time ◽  
Research Method ◽  
Residual Chlorine ◽  
Titration Method ◽  
Research Results ◽  
Washing Process ◽  
Ozonation Time ◽  
Water Based ◽  
Washing Water ◽  
Ozonated Water

The objective of this article was to study the effect of washing edamame using ozonated water to reduce residual chlorine contained in edamame through a continuous washing process. Chlorine residue in edamame was caused by the use of fertilizers and pesticides that contain chlorine compounds. The research method used was descriptive explanatory research consist of two treatment levels of ozonation time (0, 10, and 15 minutes) and ozone contact time (0, 12, 18, and 24 minutes) which were repeated twice. The residual chlorine and pesticide concentrations were calculated using the titration method. Based on research results, ozone can reduce chlorine in edamame. The lowest detected chlorine was in edamame which had been washed using ozone water with an ozonation time of 15 minutes with the amount of chlorine reduced by 56%. The longer the contact time, the greater the amount of reduced chlorine and the lower the concentration of ozone remaining in the washing water. Based on the research results, a brief conclusion that can be explained was ozone could reduce chlorine in edamame caused by fertilizer and disinfectant overuse until 50%.

CONTACT TIME OF OZONATED WATER ON MICROBIAL POPULATIONS AND QUALITY CHANGES OF FRESH-CUT BROCCOLI FLORETS

2013 ◽  
pp. 177-183 ◽  
Author(s):  
P. Renumarn ◽  
V. Srilaong ◽  
A. Uthairatanakij ◽  
S. Kanlayanarat ◽  
P. Jitareerat
Keyword(s):  
Contact Time ◽  
Microbial Populations ◽  
Quality Changes ◽  
Fresh Cut ◽  
Ozonated Water

EFFECTS OF DIFFERENT PRECOOLING TREATMENTS WITH OZONATED WATER ON THE QUALITY OF '0900 ZIRAAT' SWEET CHERRY FRUIT

2008 ◽  
pp. 831-836 ◽  
Author(s):  
M.A. Koyuncu ◽  
A.C. Seydim ◽  
T. Dilmaçünal ◽  
H.E. Savran ◽  
T. Taş
Keyword(s):  
Sweet Cherry ◽  
Ozonated Water

Biogas Purification Using Natural Zeolite and NaOH

2014 ◽  
Vol 664 ◽  
pp. 415-418 ◽  
Author(s):  
Denny Widyanuriawan ◽  
Sugiarto
Keyword(s):  
Natural Zeolite ◽  
Contact Time ◽  
Continuous System ◽  
Important Process ◽  
Purification System ◽  
Biogas Purification ◽  
Naoh Solution

Biogas purification is the most important process to increase the quality of biogas. This research was introduced a continuous system of biogas purification from CO2 impurity using zeolite and NaOH solution. The granular zeolites were varied from 1 to 5 layers on solid purifier. The NaOH solution was varied from 10% to 50 % based on concentration. Contact time of biogas with zeolite and NaOH solution were observed on interval of 15 minutes. The results showed that the ability of NaOH solution to absorb of CO2 is faster than zeolite. On the initial minutes, NaOH solution on the some concentration absorbed the CO2 until less than 10% of volume CO2 in biogas. Furthermore, the five layers of zeolites able to adsorb the CO2 until the 21.3% of volume CO2 in biogas on 60 minutes. For a similiar condition, CH4 levels increased to be 74.7% and 92.4% for zeolite and NaOH solution, respectively. The ability of CO2 absorbsion was influenced by layers number of zeolite purification system and the concentration of NaOH solution for NaOH purification system.

scholarly journals Ozonated water in the post-harvest treatment of coffee fruits

2016 ◽  
Vol 20 (9) ◽  
pp. 862-866 ◽  
Author(s):  
Fernando J. B. Brandão ◽  
Marco A. M. Biaggioni ◽  
Felipe C. S. Sperotto ◽  
Erika Fujita ◽  
Paula L. Santos ◽  
...  
Keyword(s):  
Sensory Quality ◽  
Reducing Sugars ◽  
Water System ◽  
Quality Analysis ◽  
Partial Reduction ◽  
Negative Results ◽  
Constant Rate ◽  
Recirculating Water System ◽  
Ozonated Water

ABSTRACT Ozone is used in many countries for the treatment of effluents, becoming a viable alternative in sanitation of coffee wastewater. However, the strong ozone oxidation, responsible for its germicidal effect, can also compromise grain and beverage quality. The objective of this study was to evaluate the quality of Arabica coffee in different periods of treatment with ozonated water and its effect after drying. Coffee fruits were subjected to ozonation at regular intervals of 0, 5, 10, 20, and 30 min, with continuous stirring promoted by a recirculating water system at constant rate of 1 ppm of solubilized ozone. The design was completely randomized with five treatments and four replicates. After obtaining the data, the analysis of variance was performed and means were compared by Tukey test (p ≤ 0.05). The results showed a partial reduction of fungi after washing with ozonated water, but the same effect was not observed after drying. For coffee quality analysis, the longest times of exposure to the solubilized gas in the water produced some negative results in electrical conductivity and total and reducing sugars. However, the sensory quality of the beverage was maintained.

Efficacy of Ozone in Killing Listeria monocytogenes on Alfalfa Seeds and Sprouts and Effects on Sensory Quality of Sprouts†

2003 ◽  
Vol 66 (1) ◽  
pp. 44-51 ◽  
Author(s):  
W. N. WADE ◽  
A. J. SCOUTEN ◽  
K. H. McWATTERS ◽  
R. L. WICK ◽  
A. DEMIRCI ◽  
...  
Keyword(s):  
Listeria Monocytogenes ◽  
Sensory Quality ◽  
Ozone Treatment ◽  
Water Control ◽  
Physical Damage ◽  
Significant Deterioration ◽  
Naturally Occurring ◽  
Alfalfa Seeds ◽  
Ozonated Water

A study was done to determine the efficacy of aqueous ozone treatment in killing Listeria monocytogenes on inoculated alfalfa seeds and sprouts. Reductions in populations of naturally occurring aerobic microorganisms on sprouts and changes in the sensory quality of sprouts were also determined. The treatment (10 or 20 min) of seeds in water (4°C) containing an initial concentration of 21.8 ± 0.1 μg/ml of ozone failed to cause a significant (P ≤ 0.05) reduction in populations of L. monocytogenes. The continuous sparging of seeds with ozonated water (initial ozone concentration of 21.3 ± 0.2 μg/ml) for 20 min significantly reduced the population by 1.48 log10 CFU/g. The treatment (2 min) of inoculated alfalfa sprouts with water containing 5.0 ± 0.5, 9.0 ± 0.5, or 23.2 ± 1.6 μg/ml of ozone resulted in significant (P ≤ 0.05) reductions of 0.78, 0.81, and 0.91 log10 CFU/g, respectively, compared to populations detected on sprouts treated with water. Treatments (2 min) with up to 23.3 ± 1.6 μg/ml of ozone did not significantly (P > 0.05) reduce populations of aerobic naturally occurring microorganisms. The continuous sparging of sprouts with ozonated water for 5 to 20 min caused significant reductions in L. monocytogenes and natural microbiota compared to soaking in water (control) but did not enhance the lethality compared to the sprouts not treated with continuous sparging. The treatment of sprouts with ozonated water (20.0 μg/ml) for 5 or 10 min caused a significant deterioration in the sensory quality during subsequent storage at 4°C for 7 to 11 days. Scanning electron microscopy of uninoculated alfalfa seeds and sprouts showed physical damage, fungal and bacterial growth, and biofilm formation that provide evidence of factors contributing to the difficulty of killing microorganisms by treatment with ozone and other sanitizers.

Effect of Fertilizer on Palisadegrass Seeds Pathogens

2019 ◽  
pp. 1-9
Author(s):  
Anne Caroline Dallabrida Avelino ◽  
Dayana Aparecida De Faria ◽  
Dryelle Sifuentes Pallaoro ◽  
Giovani Oliveira de Arieira ◽  
Arthur Behling Neto ◽  
...  
Keyword(s):  
Regression Analysis ◽  
Contact Time ◽  
Descriptive Analysis ◽  
Accelerated Aging ◽  
Germination Test ◽  
Significance Level ◽  
Seed Health ◽  
Fusarium Sp ◽  
Aspergillus Sp

This study aimed to evaluate the effects of the contact of Brachiaria seeds with the fertilizer 05-25-15 on the sanitary quality of the seeds. The experimental design was completely randomized, in a (2x5) factorial design, with four replications. The treatments consisted of five contact times (0, 24, 48, 72 and 96 hours) of the fertilizer with seeds of ruziziensis grass and marandu grass. After the contact times of the Brachiaria seeds with the fertilizer, the seeds from each species were separated and the following analyses were performed: water content, germination, seed health ("Blotter Test"), and accelerated aging, with later germination test and sanitary analysis of seeds. Data were analysed for variance and regression analysis at the significance level of 5% and descriptive analysis was used for the results of the sanitary analysis. The contact time reduces the incidence of pathogens in the seeds of ruziziensis grass and marandu grass treated with the fertilizer due to the salinity and acid pH of the fertilizer. The fungi related to the reduction in germination were Aspergillus sp. and Fusarium sp. The disinfestation process increased the incidence of Fusarium sp., under high internal infestation of this fungus in palisadegrass seeds.

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