The Experts below are selected from a list of 360 Experts worldwide ranked by ideXlab platform
Esra Dogubaykut - One of the best experts on this subject based on the ideXlab platform.
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ultraviolet UV C Radiation as a praCtiCal alternative to deContaminate thyme thymus vulgaris l
Journal of Food Processing and Preservation, 2019Co-Authors: Esra Dogubaykut, Gurbuz GunesAbstract:Alternative and Cost‐effeCtive deContamination methods for dehydrated herbs and spiCes are subjeCt of interest in industry. In this work, a fluidized bed ultraviolet (UV‐C) system was tested for deContamination of dehydrated thyme. The samples were exposed to UV‐C Radiation at 254 nm at 25.7, 51.4, 102.8, and 205.6 J/Cm² delivered at an intensity of 26.7 mW/Cm². UV‐C at 205.6 J/Cm² resulted in 1.8, 1.3, and 0.3 log Cfu/g reduCtions in total aerobiC mesophiliC baCteria, total yeast/mold, and BaCillus Cereus, respeCtively. Total phenoliC Content, total antioxidant aCtivity, moisture Content, and the sensory attributes were not affeCted by the UV‐C treatments. UV‐C Caused a small inCrease in L* and a* values but these Changes were not deteCted in sensory evaluation. In ConClusion, UV‐C treatment up to 205.6 J/Cm² applied in a fluidized bed setting Can potentially be used in deContamination of thyme without adverse effeCts on quality. PRACTICAL APPLICATIONS: UV‐C Radiation is a widely used effeCtive teChnology to reduCe the miCrobial load on various surfaCes, liquids, and air environments. In this study, the potential of a fluidized bed UV system was explored to reduCe natural miCrobial load of thyme. The results indiCated that UV‐C appliCation may be an effeCtive teChnology for deCreasing the miCrobial load of thyme without induCing signifiCant Changes to the physiCal, ChemiCal, and sensorial quality, therefore it has a potential as an alternative method for deContamination of thyme and similar herbs and spiCes industrially.
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impaCt of shortwave ultraviolet UV C Radiation on the antioxidant aCtivity of thyme thymus vulgaris l
Food Chemistry, 2014Co-Authors: Esra Dogubaykut, Gurbuz Gunes, Eric A DeckerAbstract:AbstraCt Thyme is a good sourCe of antioxidant Compounds but it Can be Contaminated by miCroorganisms. An experimental fluid bed ultraviolet (UV) reaCtor was designed for miCrobial deContamination of thyme samples and the effeCt of shortwave ultraviolet light (UV-C) Radiation on antioxidant properties of thyme was studied. Samples were exposed to UV-C Radiation for 16 or 64 min. UV-C treatment led to 1.04 and 1.38 log CFU/g reduCtion of total aerobiC mesophiliC baCteria (TAMB) Counts. Hunter a∗ value was the most sensitive Colour parameter during UV-C treatment. 2,2-Diphenyl-1-piCrylhydrazyl (DPPH) sCavenging aCtivity of extraCts was not signifiCantly affeCted by UV-C. Addition of thyme extraCts at 0.15 and 0.3 μmol GAE/ml emulsion delayed the formation of lipid hydroperoxides and headspaCe hexanal in the 5.0% (wt) Corn oil-in-water emulsion from 4 to 9 and 14 days, respeCtively. No signifiCant Changes in oxidation rates were observed between UV-C treated and untreated samples at same ConCentrations.
Ginny Moore - One of the best experts on this subject based on the ideXlab platform.
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use of UV C Radiation to disinfeCt non CritiCal patient Care items a laboratory assessment of the nanoClave Cabinet
BMC Infectious Diseases, 2012Co-Authors: Ginny Moore, Shanom Ali, Elaine Cloutmangreen, Christina Bradley, Martyn A C Wilkinson, John C Hartley, Adam Fraise, Peter A R WilsonAbstract:BaCkground The near-patient environment is often heavily Contaminated, yet the deContamination of near-patient surfaCes and equipment is often poor. The NanoClave Cabinet produCes large amounts of ultraviolet-C (UV-C) Radiation (53 W/m2) and is designed to rapidly disinfeCt individual items of CliniCal equipment. Controlled laboratory studies were ConduCted to assess its ability to eradiCate a range of potential pathogens inCluding Clostridium diffiCile spores and Adenovirus from different types of surfaCe.
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use of UV C Radiation to disinfeCt non CritiCal patient Care items a laboratory assessment of the nanoClave Cabinet
BMC Infectious Diseases, 2012Co-Authors: Ginny Moore, Shanom Ali, Elaine Cloutmangreen, Christina Bradley, Martyn A C Wilkinson, John C Hartley, Adam Fraise, Peter A R WilsonAbstract:The near-patient environment is often heavily Contaminated, yet the deContamination of near-patient surfaCes and equipment is often poor. The NanoClave Cabinet produCes large amounts of ultraviolet-C (UV-C) Radiation (53 W/m2) and is designed to rapidly disinfeCt individual items of CliniCal equipment. Controlled laboratory studies were ConduCted to assess its ability to eradiCate a range of potential pathogens inCluding Clostridium diffiCile spores and Adenovirus from different types of surfaCe. EaCh test surfaCe was inoCulated with known levels of vegetative baCteria (106 Cfu/Cm2), C. diffiCile spores (102-106 Cfu/Cm2) or Adenovirus (109 viral genomes), plaCed in the NanoClave Cabinet and exposed for up to 6 minutes to the UV-C light sourCe. Survival of baCterial Contaminants was determined via Conventional Cultivation teChniques. Degradation of viral DNA was determined via PCR. Results were Compared to the number of Colonies or level of DNA reCovered from non-exposed Control surfaCes. Experiments were repeated to inCorporate organiC soils and to Compare the effiCaCy of the NanoClave Cabinet to that of antimiCrobial wipes. After exposing 8 Common non-CritiCal patient Care items to two 30-seCond UV-C irRadiation CyCles, baCterial numbers on 40 of 51 target sites were Consistently reduCed to below deteCtable levels (≥ 4.7 log10 reduCtion). BaCterial load was reduCed but still persisted on other sites. ObjeCts that proved diffiCult to disinfeCt using the NanoClave Cabinet (e.g. blood pressure Cuff) were also diffiCult to disinfeCt using antimiCrobial wipes. The effiCaCy of the NanoClave Cabinet was not affeCted by the presenCe of organiC soils. Clostridium diffiCile spores were more resistant to UV-C irRadiation than vegetative baCteria. However, two 60-seCond irRadiation CyCles were suffiCient to reduCe the number of surfaCe-assoCiated spores from 103 Cfu/Cm2 to below deteCtable levels. A 3 log10 reduCtion in deteCtable Adenovirus DNA was aChieved within 3 minutes; after 6 minutes, viral DNA was undeteCtable. The results of this study suggest that the NanoClave Cabinet Can provide rapid and effeCtive disinfeCtion of some patient-related equipment. However, laboratory studies do not neCessarily repliCate ‘in-use’ Conditions and further tests are required to assess the usability, aCCeptability and relative performanCe of the NanoClave Cabinet when used in situ.
Carlos Adam Conte - One of the best experts on this subject based on the ideXlab platform.
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effeCt of the UV C Radiation on shelf life of vaCuum paCked refrigerated piraruCu arapaima gigas fillets
Journal of Aquatic Food Product Technology, 2018Co-Authors: Julia De Souza Lira Santos, Eliane Teixeira Marsico, Robson Maia Franco, Carlos Adam Conte, Mosar Lemos, Miguel Antonio Cinquini, Flavio Alves Da Silva, Yasmin Bugini Dutra, Maria Lúcia Guerra MonteiroAbstract:ABSTRACTThe effeCt of Ultraviolet Radiation type C (UV-C) Radiation (0.100 ± 0.010 J/Cm2) on shelf life of Arapaima gigas fillets stored at 4 ± 1°C for 18 days was investigated. The samples were analyzed for total aerobiC mesophiliC baCteria (TAMB) Counts; total aerobiC psyChrotrophiC baCteria (TAPB) Counts; EnterobaCteriaCeae; purge loss; pH; lipid oxidation; total volatile bases (TVB-N); ammonia; biogeniC amines (BAs); and L*, a*, and b* values. UV-C Radiation inCreased (P 0.05) in detrimental effeCts on lipid oxidation or a* and b* values. UV-C at 0.100 J/Cm2 demonstrated a good potential for use in A. gigas fillets and, therefore, it Could be applied at industrial sCale.
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influenCe of vaCuum and modified atmosphere paCkaging in Combination with UV C Radiation on the shelf life of rainbow trout onCorhynChus mykiss fillets
Food Control, 2016Co-Authors: Una Leal Rodrigues, Thiago Silveira Alvares, Guilherme Sicca Lopes Sampaio, Claudius Couto Cabral, Jasmim Valeria Arcanjo Araujo, Robson Maia Franco, Sergio Borges Mano, Carlos Adam ConteAbstract:AbstraCt The effeCts of UV-C Radiation, modified atmosphere paCkaging (MAP) and their Combination on rainbow trout ( OnCorhynChus mykiss ) fillets quality were examined during a period of 22 days. The samples were submitted to five paCkaging Conditions: (AP) aerobiC paCkaging; (VP) vaCuum paCkaging; (VP + UV-C) vaCuum paCkaging + UV-C Radiation; (MAP) modified atmosphere paCkaging (80% CO 2 /20% N 2 ) and (MAP + UV-C) modified atmosphere paCkaging + UV-C Radiation (80% CO 2 /20% N 2; 106.32 mJ/Cm 2 ) and storaged at 4 °C. The samples were analyzed daily for miCrobiologiCal (mesophiliC, psyChrotrophiC and EnterobaCteriaCeae Counts) and ChemiCal (pH, TMA-N, TBV-N, lipid oxidation, ammonia and biogeniC amines) parameters. Overall, UV-C Radiation promoted lag phase formation in mesophiliC and psyChrotrophiC groups. MesophiliC and psyChrotrophiC groups presented signifiCant lower (P
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modified atmosphere paCkaging and UV C Radiation on shelf life of rainbow trout onCorhynChus mykiss
Procedia food science, 2016Co-Authors: Bruna Leal Rodrigues, Thiago Silveira Alvares, Guilherme Sicca Lopes Sampaio, Claudius Couto Cabral, Jasmim Valeria Arcanjo Araujo, Robson Maia Franco, Sergio Borges Mano, Carlos Adam ConteAbstract:EffeCts of modified atmosphere paCkaging (MAP) in Combination to UV-C Radiation on rainbow trout fillets were examined. The samples were submitted to two treatments: (T1) aerobiC paCkage; (T2) MAP+UV-C Radiation (80% CO2/20% N2; 106.32mJ/Cm2) and were analyzed daily for miCrobiologiCal (mesophiliC and psyChrotrophiC Count) and ChemiCal (biogeniC amines) parameters. MAP+UV-C Radiation (T2) promoted lag phase formation and lower number of Colonies in the stationary phase as well as retarded Cadaverine produCtion during storage time. MAP+UV-C Radiation retard miCrobial growth and delay ChemiCal Changes enhanCing the shelf life of rainbow trout fillets by at least twiCe.
Eric A Decker - One of the best experts on this subject based on the ideXlab platform.
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impaCt of shortwave ultraviolet UV C Radiation on the antioxidant aCtivity of thyme thymus vulgaris l
Food Chemistry, 2014Co-Authors: Esra Dogubaykut, Gurbuz Gunes, Eric A DeckerAbstract:AbstraCt Thyme is a good sourCe of antioxidant Compounds but it Can be Contaminated by miCroorganisms. An experimental fluid bed ultraviolet (UV) reaCtor was designed for miCrobial deContamination of thyme samples and the effeCt of shortwave ultraviolet light (UV-C) Radiation on antioxidant properties of thyme was studied. Samples were exposed to UV-C Radiation for 16 or 64 min. UV-C treatment led to 1.04 and 1.38 log CFU/g reduCtion of total aerobiC mesophiliC baCteria (TAMB) Counts. Hunter a∗ value was the most sensitive Colour parameter during UV-C treatment. 2,2-Diphenyl-1-piCrylhydrazyl (DPPH) sCavenging aCtivity of extraCts was not signifiCantly affeCted by UV-C. Addition of thyme extraCts at 0.15 and 0.3 μmol GAE/ml emulsion delayed the formation of lipid hydroperoxides and headspaCe hexanal in the 5.0% (wt) Corn oil-in-water emulsion from 4 to 9 and 14 days, respeCtively. No signifiCant Changes in oxidation rates were observed between UV-C treated and untreated samples at same ConCentrations.
Peter A R Wilson - One of the best experts on this subject based on the ideXlab platform.
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use of UV C Radiation to disinfeCt non CritiCal patient Care items a laboratory assessment of the nanoClave Cabinet
BMC Infectious Diseases, 2012Co-Authors: Ginny Moore, Shanom Ali, Elaine Cloutmangreen, Christina Bradley, Martyn A C Wilkinson, John C Hartley, Adam Fraise, Peter A R WilsonAbstract:BaCkground The near-patient environment is often heavily Contaminated, yet the deContamination of near-patient surfaCes and equipment is often poor. The NanoClave Cabinet produCes large amounts of ultraviolet-C (UV-C) Radiation (53 W/m2) and is designed to rapidly disinfeCt individual items of CliniCal equipment. Controlled laboratory studies were ConduCted to assess its ability to eradiCate a range of potential pathogens inCluding Clostridium diffiCile spores and Adenovirus from different types of surfaCe.
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use of UV C Radiation to disinfeCt non CritiCal patient Care items a laboratory assessment of the nanoClave Cabinet
BMC Infectious Diseases, 2012Co-Authors: Ginny Moore, Shanom Ali, Elaine Cloutmangreen, Christina Bradley, Martyn A C Wilkinson, John C Hartley, Adam Fraise, Peter A R WilsonAbstract:The near-patient environment is often heavily Contaminated, yet the deContamination of near-patient surfaCes and equipment is often poor. The NanoClave Cabinet produCes large amounts of ultraviolet-C (UV-C) Radiation (53 W/m2) and is designed to rapidly disinfeCt individual items of CliniCal equipment. Controlled laboratory studies were ConduCted to assess its ability to eradiCate a range of potential pathogens inCluding Clostridium diffiCile spores and Adenovirus from different types of surfaCe. EaCh test surfaCe was inoCulated with known levels of vegetative baCteria (106 Cfu/Cm2), C. diffiCile spores (102-106 Cfu/Cm2) or Adenovirus (109 viral genomes), plaCed in the NanoClave Cabinet and exposed for up to 6 minutes to the UV-C light sourCe. Survival of baCterial Contaminants was determined via Conventional Cultivation teChniques. Degradation of viral DNA was determined via PCR. Results were Compared to the number of Colonies or level of DNA reCovered from non-exposed Control surfaCes. Experiments were repeated to inCorporate organiC soils and to Compare the effiCaCy of the NanoClave Cabinet to that of antimiCrobial wipes. After exposing 8 Common non-CritiCal patient Care items to two 30-seCond UV-C irRadiation CyCles, baCterial numbers on 40 of 51 target sites were Consistently reduCed to below deteCtable levels (≥ 4.7 log10 reduCtion). BaCterial load was reduCed but still persisted on other sites. ObjeCts that proved diffiCult to disinfeCt using the NanoClave Cabinet (e.g. blood pressure Cuff) were also diffiCult to disinfeCt using antimiCrobial wipes. The effiCaCy of the NanoClave Cabinet was not affeCted by the presenCe of organiC soils. Clostridium diffiCile spores were more resistant to UV-C irRadiation than vegetative baCteria. However, two 60-seCond irRadiation CyCles were suffiCient to reduCe the number of surfaCe-assoCiated spores from 103 Cfu/Cm2 to below deteCtable levels. A 3 log10 reduCtion in deteCtable Adenovirus DNA was aChieved within 3 minutes; after 6 minutes, viral DNA was undeteCtable. The results of this study suggest that the NanoClave Cabinet Can provide rapid and effeCtive disinfeCtion of some patient-related equipment. However, laboratory studies do not neCessarily repliCate ‘in-use’ Conditions and further tests are required to assess the usability, aCCeptability and relative performanCe of the NanoClave Cabinet when used in situ.
