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40Ar/39Ar geochronology at the Instituto de Geociências, USP: instrumentation, analytical procedures, and calibration Anais da ABC (AABC)
VASCONCELOS,PAULO M.; ONOE,ARTUR T.; KAWASHITA,KOJI; SOARES,ADALBERTO J.; TEIXEIRA,WILSON.
Laser heating 40Ar/39Ar geochronology provides high analytical precision and accuracy, mum-scale spatial resolution, and statistically significant data sets for the study of geological and planetary processes. A newly commissioned 40Ar/39Ar laboratory at CPGeo/USP, São Paulo, Brazil, equips the Brazilian scientific community with a new powerful tool applicable to the study of geological and cosmochemical processes. Detailed information about laboratory layout, environmental conditions, and instrumentation provides the necessary parameters for the evaluation of the CPGeo/USP 40Ar/39Ar suitability to a diverse range of applications. Details about analytical procedures, including mineral separation, irradiation at the IPEN/CNEN reactor at USP, and mass...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Geochronology; 40Ar/39Ar method; Irradiation; Calibration.
Ano: 2002 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652002000200008
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Chapter 20: IRRADIATION AND FOOD SAFETY: CONSUMER ATTITUDES AND AWARENESS AgEcon
Misra, Sukant K.; Fletcher, Stanley M.; Huang, Chung L..
This book was originally published by Westview Press, Boulder CO, 1995.
Tipo: Book Chapter Palavras-chave: Food safety; Irradiation; Consumer attitudes; Consumer survey; Food Consumption/Nutrition/Food Safety.
Ano: 1995 URL: http://purl.umn.edu/25974
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Economic Assessment of Food Safety Regulations: The New Approach to Meat and Poultry Inspection AgEcon
Crutchfield, Stephen R.; Buzby, Jean C.; Roberts, Tanya; Ollinger, Michael; Lin, Chung-Tung Jordan.
USDA is now requiring all Federally inspected meat and poultry processing and slaughter plants to implement a new system called Hazard Analysis and Critical Control Points (HACCP) to reduce potentially harmful microbial pathogens in the food supply. This report finds that the benefits of the new regulations, which are the medical costs and productivity losses that are prevented when foodborne illnesses are averted, will likely exceed the costs, which include spending by firms on sanitation, temperature control, planning and training, and testing. Other, nonregulatory approaches can also improve food safety, such as providing market incentives for pathogen reduction, irradiation, and education and labeling to promote safe food handling and thorough cooking.
Tipo: Report Palavras-chave: Food safety; Foodborne illness; Microbial pathogens; Meat and poultry inspection; HACCP; Cost of illness; Consumer education; Irradiation; Food Consumption/Nutrition/Food Safety; Livestock Production/Industries.
Ano: 1997 URL: http://purl.umn.edu/34009
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Efeito de doses de irradiação gama sobre gemas germinadas de cana de açúcar (Saccharum Spp). Infoteca-e
MARCHIORI, L. F. S.; ARTHUR, V.; SILVA, F. C. da; RAPOSO, M. S.; SILVA, G. S. P. L. da; GOIA, T. G..
Introdução. Metodologia. Materiais. Métodos. Resultados e discussões. Conclusão.
Tipo: Capítulo em livro técnico (INFOTECA-E) Palavras-chave: Cobalto 60; Irradiação gama.; Cana de açúcar; Raio gama.; Sugarcane; Saccharum; Irradiation; Gamma radiation.
Ano: 2018 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1087630
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Effect of ionizing radiation onVibrio bacteria in Crassostrea virginica (American oyster) ArchiMer
Eberiel, D; Dooley, K; Langton, L; Malleth, J.
The presence of Vibrio bacteria in raw shellfish poses a significant health hazard to the consuming public. These human pathogens are natural, seasonal components of the microbial flora of shellfish which can result in primary septicemic or diarrheal fatal infections. Existing shellfish depuration neither targets nor eliminates the Vibrio bacteria. For this reason, additional purification processes are necessary. In this study, the effect of low dose gamma radiation on the inactivation ofVibrio cholerae (01 and non 01) and vulnificus is investigated. Log decrement (D10) values ranging only to a high of 0.09 KGy in the Vibrio strains support the hypothesis that food irradiation technology can provide an additional effective and efficient shellfish...
Tipo: Text Palavras-chave: USA Coasts; USA; Vibrio vulnificus; Vibrio cholerae; Crassostrea virginica; Bivalvia; Vibrio; Bacteria; Self purification; Marine molluscs; Irradiation; Gamma radiation; Ionizing radiation; Oyster culture.
Ano: 1992 URL: http://archimer.ifremer.fr/doc/1992/acte-1619.pdf
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Effect of ozone oxidative preconditioning in preventing early radiation-induced lung injury in rats BJMBR
Bakkal,B.H.; Gultekin,F.A.; Guven,B.; Turkcu,U.O.; Bektas,S.; Can,M..
Ionizing radiation causes its biological effects mainly through oxidative damage induced by reactive oxygen species. Previous studies showed that ozone oxidative preconditioning attenuated pathophysiological events mediated by reactive oxygen species. As inhalation of ozone induces lung injury, the aim of this study was to examine whether ozone oxidative preconditioning potentiates or attenuates the effects of irradiation on the lung. Rats were subjected to total body irradiation, with or without treatment with ozone oxidative preconditioning (0.72 mg/kg). Serum proinflammatory cytokine levels, oxidative damage markers, and histopathological analysis were compared at 6 and 72 h after total body irradiation. Irradiation significantly increased lung...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Ozone oxidative preconditioning; Irradiation; Lung injury.
Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013000900789
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Effect of Preconception Gamma Irradiation on Morphometric Assessment of Adult Female Mice and Embryo International Journal of Morphology
Edagha,Innocent A; Shokunbi,Matthew T; Adenipekun,Adeniyi A; Bassey,Rosemary B; Ekong,Moses B.
The aim was to study the effect of preconception gamma irradiation on the gross morphometry of the adult female mice and its embryo. Twenty-seven mice; 18 females and 9 males: subdivided into 3 groups namely (Control, Non-Irradiation and Radiation) containing 6 females and 3 male mice each in 2:1 ratio. A gamma irradiation dose of 1Gy/min was delivered to each batch of mice exposed by a Cobalt 60, Theratron 780c model, by Atomic Energy of Canada Limited (AECL) at the Radiotherapy department of the University College Hospital, Ibadan. All the animals were mated 1 week post irradiation. Vaginal plugs were confirmed, and the pregnant females were sacrificed on day 14 of gestation by chloroform inhalation. The gross morphology of the female mice and their...
Tipo: Journal article Palavras-chave: Preconception; Irradiation; Gamma ray; Spinal cord; Embryo.
Ano: 2013 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022013000200039
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Effects of gamma radiation on the stability and degradation kinetics of phenolic compounds and antioxidant activity during storage of (Oryza sativa L.) black rice flour BABT
Ito,Vivian Cristina; Zielinski,Acácio Antônio Ferreira; Demiate,Ivo Mottin; Spoto,Marta; Nogueira,Alessandro; Lacerda,Luiz Gustavo.
Abstract The effects of gamma radiation (0, 1, 2 and 3 kGy) were used to evaluate the stability and thermal degradation kinetics of anthocyanins, as well as the stability of total phenolic compounds (TPC) and antioxidant activity at different temperatures (4, 25, 35 and 45 °C) during the storage (0, 30, 60, 90 and 120 days) of black rice flour. This flour can be used as ingredient for gluten-free cereal products with higher nutritional value. For this it is necessary to preserve the anthocyanin content during thermal processing and shelf-life periods. At time 0, the dose of 3 kGy provided all of the most available bioactive compounds, raising their antioxidant potential, except for TPC. During the storage at different temperatures up to 120 days, gradual...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Anthocyanins; Bioactive compounds; Irradiation; Stability; Thermodynamic parameters; Pigmented rice.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132019000100500
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Estimating the demand for risk reduction from foodborne pathogens through food irradiation AgEcon
Hartl, Jochen; Fox, John A..
In this study the response of US consumers to irradiation in meat processing is examined. Despite scientific evidence of the effectiveness and safety of irradiation, meat processors and retailers have been slow to market irradiated beef products due to uncertainty about consumer acceptance. The objective of this study was therefore to examine the factors influencing consumer demand for irradiation using data from a contingent valuation (CV) survey with 819 households in eight midwestern US states. The analysis focused on the value of reduced risk from Escherichia coli O157:H7 and Salmonella in ground beef consumption. Respondents were on average willing to pay a price premium of 22 cents/lb. for safer ground beef. Willingness to Pay (WTP) amounts were...
Tipo: Journal Article Palavras-chave: Food safety; Irradiation; Willingness to Pay (WTP); Contingent Valuation (CV); Demand and Price Analysis; Food Consumption/Nutrition/Food Safety; Risk and Uncertainty.
Ano: 2004 URL: http://purl.umn.edu/97498
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Fatty acids, cholesterol, oxidative rancidity, and color of irradiated shrimp Ciênc. Tecnol. Aliment.
Abreu,Virgínia Kelly Gonçalves; Pereira,Ana Lúcia Fernandes; Vidal,Tatiana Fontoura; Zapata,Jorge Fernando Fuentes; Sousa Neto,Manoel Alves de; Freitas,Ednardo Rodrigues de.
The effect of gamma irradiation (0, 2, 4, and 6 kGy doses) applied to frozen and packed headed shrimp on the fatty acid profile, cholesterol content, and lipid and color stability was evaluated. Myristic acid was higher in shrimp irradiated with 4 and 6 kGy and palmitic acid was higher in samples irradiated with 2 and 6 kGy compared to non-irradiated samples. Stearic and behenic acids were lower in shrimp irradiated with 6 kGy compared to non-irradiated shrimp. With regard to non-irradiated shrimp, palmitoleic, oleic, and linoleic acids and total monounsaturated fatty acids were higher in shrimp irradiated with 6 kGy. Saturated fatty acid and cholesterol contents in irradiated samples were not different from those in non-irradiated shrimp. Lipid oxidation...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Irradiation; Fatty acids; TBARS; L*; A*; B*.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612010000400020
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Gamma radiation treatment applied to microbial decontamination of products derived from eggs collected from the retail market in São Paulo Arq. Bras. Med. Vet. Zootec.
Aquino,S.; Lui,C.C.; Corrêa,B..
ABSTRACT The quality of products derived from eggs depends on the quality of the raw material source and the industrial production. The contamination by fungi and bacteria can occur after exposure of the product in the retail market. The objective of this study was to evaluate the microbiological quality of 60 samples of derivated egg products and evaluate the effects of gamma radiation of cobalt-60, using the dose of 5 and 10 kGy, for decontamination of products collected in the retail market in the São Paulo city. The bacterial count was performed by the most probable number (MPN) and the fungal counts by serial dilution after plating surface. It was observed a decrease in the humidity and water activity (Aw) values of irradiated whole egg powder and...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Bacteria; Sterilization; Fungi; Irradiation; Powdered egg.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000601683
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Harnessing Natural Colorants for Sustainable Textile Dyeing an Eco-Friendly Approach Using Sweet Cane (Saccharum Bengalense Retz.) Inflorescence BABT
Raza,Ali; Iqbal,Naeem; Mahmood,Saqib; Parveen,Shagufta; Azeem,Muhammad; Nawaz,Muhammad; Javed,M Tariq; Noman,Ali.
ABSTRACT The excessive industrial use of dye producing plants has threatened the existence of these species and biodiversity. Exploration of abundantly available natural dye sources not only provide industrial benefits but also share the load of dye yielding plants. In the present study we used the inflorescence of munj sweet cane (Saccharum bengalense Retz.) to extract natural colorant for textile industry. This easily available plant is cheap source of natural colorants and good alternative of synthetic dyes. The munj sweet cane inflorescence extract and fabric was treated with microwave radiations. The dyeing aspects like temperature, time, fabrics to extract ratio, salt type and salt concentrations were optimized. Pre-and post mordanting was carried...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Irradiation; Natural dye; Munj sweetcane; Color fastness; Mordanting; Spectraflash.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132018000100702
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Immunization with native and cobalt 60-irradiated Crotalus durissus terrificus venom in swiss mice: assessment of the neutralizing potency of antisera J. Venom. Anim. Toxins incl. Trop. Dis.
Ferreira Junior,R. S.; Nascimento,N.; Martinez,J. C.; Alves,J. B.; Meira,D. A.; Barraviera,B..
ELISA was used to evaluate, follow, and compare the humoral immune response of Swiss mice during hyperimmunization with natural and Cobalt 60-irradiated (60Co) Crotalus durissus terrificus venom. Potency and neutralization were evaluated by in vitro challenges. After hyperimmunization, immunity was observed by "in vivo" challenge and the side effects were assessed. The animals immunization with one LD50 of the venom was on days one, 15, 21, 30, and 45, when blood samples were collected; the challenges occurred on the 60th day. Results showed that ELISA was efficient in evaluating, following, and comparing mouse immune response during hyperimmunization. Serum titers produced with natural venom were similar to those produced with irradiated venom....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Hyperimmunization; Irradiation; Crotalus durissus terrificus; ELISA; Serum neutralization; Detoxification.
Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992005000300008
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Immunological assessment of mice hyperimmunized with native and Cobalt-60-irradiated Bothrops venoms J. Venom. Anim. Toxins incl. Trop. Dis.
Ferreira Junior,R. S.; Nascimento,N.; Martinez,J. C.; Alves,J. B.; Meira,D. A.; Barraviera,B..
ELISA was used to evaluate, accompany, and compare the humoral immune response of Swiss mice during hyperimmunization with native and Cobalt-60-irradiated (60Co) venoms of Bothrops jararaca, Bothrops jararacussu and Bothrops moojeni. Potency and neutralization were evaluated by in vitro challenges. After hyperimmunization, immunity was observed by in vivo challenge, and the side effects were assessed. The animals immunization with one LD50 of each venom occurred on days 1, 15, 21, 30, and 45, when blood samples were collected; challenges happened on the 60th day. Results showed that ELISA was efficient in evaluating, accompanying and comparing mouse immune response during hyperimmunization. Serum titers produced with natural venom were similar to those...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Venom; Irradiation; Bothrops; ELISA; Serum production; Detoxification.
Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992005000400006
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Induction of chromosomal variants through pollen irradiation in rice International Rice Research Institute
Bautista, Antonio Tadeo S..
xii1, 63 l. : ill. Thesis (Ph.D.) -- University of the Philippines at Los Baños
Tipo: Thesis Palavras-chave: Rice; Plant genetics; Chromosomes; Gene induction; Pollen; Irradiation.
Ano: 1993 URL: http://hdl.handle.net/123456789/754
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Ionizing radiation effects on food vitamins: a review BABT
Dionísio,Ana Paula; Gomes,Renata Takassugui; Oetterer,Marília.
Ionizing radiation has been widely used in industrial processes, especially in the sterilization of medicals, pharmaceuticals, cosmetic products, and in food processing. Similar to other techniques of food processing, irradiation can induce certain alterations that can modify both the chemical composition and the nutritional value of foods. These changes depend on the food composition, the irradiation dose and factors such as temperature and presence or absence of oxygen in the irradiating environment. The sensitivity of vitamins to radiation is unpredictable and food vitamin losses during the irradiation are often substantial. The aim of this study was to discuss retention or loss of vitamins in several food products submitted to an irradiation process.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Irradiation; Vitamins; Foods.
Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132009000500026
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Ionizing radiation quarantine treatments Anais da SEB
Hallman,Guy J..
Irradiation is a viable quarantine disinfestation treatment which has been studied for 40 years although it has received very little commercial use. Two principal obstacles to commercial application, 1) the fact that insects are not killed immediately, and 2) consumer opposition to irradiation, have been allayed to some extent, but the remaining impediment to large-scale commercial use is development of approved protocols by government regulatory agencies in importing countries. The United States Department of Agriculture has taken the first step by allowing for the movement of a number of quarantined fruits from Hawaii to the rest of the country following irradiation treatment. The measures of efficacy of irradiation disinfestation treatments should be...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Insecta; Arachnida; Gamma radiation; Irradiation; Postharvest disinfestation.
Ano: 1998 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0301-80591998000300001
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Irradiance availability and growth of leguminous trees of cerrado. Repositório Alice
RONQUIM, C. C.; PRADO, C. H. B. DE A.; SOUZA, J. P..
We evaluated photosynthetic performance, growth, and biomass partitioning in tree species Anadenanthera falcata and Stryphnodendron adstringens growing under full solar irradiance and in the shade equivalent to that found in understory of the Cerradão physiognomy. The study was conducted free of water stress by watering, in São Carlos, state of São Paulo, Brazil, until 1140 days after sowing (DAS). We obtained irradiance and leaf gas exchange data with a portable infrared gas analyzer. In the sunny area, both species presented higher respiration in the dark, light saturation point, regular and potential photosynthetic capacity and higher apparent carboxylation efficiency. Besides, under full solar irradiance, the total biomass, leaf area, height, stem...
Tipo: Artigo de periódico Palavras-chave: Cerrado; Biomass; Diameter; Gas exchange; Forest growth; Height; Irradiation; Leaf area; Leaves; Photosynthesis; Soil respiration; Zone of saturation.
Ano: 2018 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1100025
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Laboratory evaluation of young ovines inoculated with natural or 60co-irradiated Crotalus durissus terrificus venom during hyperimmunization process J. Venom. Anim. Toxins incl. Trop. Dis.
Ferreira Junior,R. S.; Nascimento,N.; Couto,R.; Alves,J. B.; Meira,D. A.; Barraviera,B..
Laboratory profile of young ovines was studied in order to evaluate and compare their antiserum production from natural and Cobalt-60 irradiated Crotalus durissus terrificus (C.d.t.) venoms. The parameters analyzed included complete blood count, and urea, creatinine, aspartate aminotransferase, total proteins, albumin and globulin serum measurements. Three groups of six animals each were used. Group 1 (G1) received natural C.d.t. venom; Group 2 (G2) received irradiated C.d.t. venom; and Group 3 (G3) was used as control and did not receive venom, only adjuvants, using seven venom inoculations. During the experimental period, animals were fortnightly weighed. According to clinical and weight evaluation, sheep in post-weaning phase showed no changes in their...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Crotalus durissus terrificus; Hyperimmunization; Ovines; Antivenom; Irradiation.
Ano: 2006 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992006000400009
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L'ionisation des produits de la pêche ArchiMer
Kodo, Jean-louis.
Fishes and fishery products are seafoods which have a nutritive value with a high proteins rate. Fishery products ionization has four steps: the radappertization (sterilization of the seafood), the radicidation (destruction of the pathogen germs), the radurization (food conservation and microbial flora reduction), the desinsectization (insects and parasites elimination). Fishery products quality control is very important
Tipo: Text Palavras-chave: Legislation; Microbial contamination; Marine fish; Disinfection; Pathogens; Sterilization; Irradiation; Ionizing radiation; Fish inspection regulations; Quality control; Seafood; Processed fishery products; Bacteria.
Ano: 1990 URL: http://archimer.ifremer.fr/doc/1990/rapport-649.pdf
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