Navegação IPEN por Autores IPEN "DEL MASTRO, NELIDA L."

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  • IPEN-DOC 26233

    FERREIRA, DICKSON C. ; DEL MASTRO, NELIDA L. . An analysis of the support and quality of live after the diagnosis and treatment of prostate cancer in the radiotherapy sector. In: INTERNATIONAL NUCLEAR ATLANTIC CONFERENCE, October 21-25, 2019, Santos, SP. Proceedings... Rio de Janeiro: Associação Brasileira de Energia Nuclear, 2019. p. 1792-1796.

    Abstract: Prostate cancer is the second most common cancer among men in most parts of the world. According to the National Cancer Institute (INCA), in Brazil there is an average of 61,000 new cases registered annually, while in the United States of America (USA) there was an average of 200,000 new cases. The advancement of technology and science has enabled a higher rate of cancer survival, especially when diagnosed early. Radiotherapy and radical prostatectomy have been shown to be effective in both controlling and curing prostate cancer; however, the patient´s satisfaction index, during the control period of the disease, in relation to the health team must be known. In the present work, patients being submitted to radiotherapy in a public hospital were ask to respond questions about the degree of satisfaction of support being receiving. Part of the research data obtained through questionnaire indicated that 65% of the patients ignore or know very little about the disease and 100% reported interest in having more information about prostate cancer. It was questioned whether during or after treatment there was need for support from health professionals, such as: physician, nursing, psychologist, social worker and physiotherapist, more than 60% reported having need of one or more specialist. The complete results of this survey will be used to elaborate guidance to radiotherapy units, through collecting data from the medical records and questionnaires relative to physical, social, psychological and emotional support, after the period of treatment with radiotherapy for prostate cancer.

    Palavras-Chave: data; diagnosis; information; medical records; neoplasms; patients; prostate; quality of life; radiotherapy; therapy; toxicity

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  • IPEN-DOC 11700

    SOUZA, MARIA D.C.A. de; VASQUEZ, PABLO ; DEL MASTRO, NELIDA L. ; ACREE, TERRY E.; LAVIN, EDWARD H.. Characterization of cachaca and rum aroma. Journal of Agricultural and Food Chemistry, v. 54, p. p. 485-488, 2006.

    Palavras-Chave: brazil; sugar cane; beverages; aromatics; gas chromatography; odor

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  • IPEN-DOC 13692

    TAIPINA, MAGDA S. ; COHEN, VICTOR H. ; DEL MASTRO, NELIDA L. . Comparacao da qualidade higienico-sanitaria de alimentos de restaurante no periodo de autogestao e de servicos terceirizados. Ciencia Saude Coletiva, v. 8, p. 698, 2003.

    Palavras-Chave: food; sample preparation; restaurants; quality control; consumer products

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  • IPEN-DOC 13693

    TAIPINA, MAGDA S. ; COHEN, VICTOR H. ; DEL MASTRO, NELIDA L. . Comparacao da qualidade higienico-sanitaria de alimentos de restaurante no periodo de autogestao e de servicos terceirizados. In: CONGRESSO BRASILEIRO DE SAUDE COLETIVA, 7., 29 de julho - 2 de agosto, 2003, Brasilia, DF. Resumo... 2003.

    Palavras-Chave: food; sample preparation; restaurants; quality control; consumer products

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  • IPEN-DOC 23861

    PEREIRA, AMANDA C.S. ; CHINELLATO, ANNE C.; SORIA, ALEJANDRA T.; ABREU, ANIBAL V.; DEL MASTRO, NELIDA L. ; MOURA, ESPERIDIANA A.B. . Comparative study of the sugarcane bagasse FIBER/HDPE composite properties using electron-beam and gamma radiation treatments. In: HWANG, JIANN-YANG (Ed.); MONTEIRO, SERGIO N. (Ed.); BAI, CHENGGUANG (Ed.); CARPENTER, JOHN (Ed.); CAI, MINGDONG (Ed.); FIRRAO, DONATO (Ed.); KIM, BUOUNG-GON (Ed.) CHARACTERIZATION OF MINERALS, METALS, AND MATERIALS. 141th; ANNUAL MEETING & EXIBITION, March 11-15, 2012, Orlando, Florida, USA. Proceedings... Hoboken, NJ, USA: John Wiley & Sons, Inc., 2012. p. 403-410. DOI: 10.1002/9781118371305.ch48

    Abstract: This work presents a comparative study of the thermo-mechanical and morphological properties of sugarcane bagasse fiber/HDPE composite treated with electron-beam and gamma radiation. The composite samples obtained by extrusion and injection molding processes were irradiated at 50 and 90 kGy using either a 1.5 MeV electron beam accelerator or gamma irradiator EMI-9, at room temperature in presence of air. The irradiated and non-irradiated samples were submitted to mechanical and MFI tests, differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), scanning electron microscopy (SEM), sol-gel analysis and X-Rays Diffraction (XRD) and the correlation between their properties was discussed. Improvement of the bagasse fiber/HDPE composite properties, using electron-beam or gamma radiation, was found.

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  • IPEN-DOC 23741

    TEIXEIRA, BRUNA S. ; TAKINAMI, PATRICIA Y.I. ; DEL MASTRO, NELIDA L. . Comparison of gamma radiation effects on natural corn and potato starches and modified cassava starch. In: MEETING OF THE IONIZING RADIATION AND POLYMERS SYMPOSIUM, 12th, September 25-30, 2016, Peninsula of Giens, France. Abstract... 2016. p. 112-112.

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  • IPEN-DOC 24329

    TEIXEIRA, BRUNA S. ; GARCIA, RAFAEL H.L. ; TAKINAMI, PATRICIA Y.I. ; DEL MASTRO, NELIDA L. . Comparison of gamma radiation effects on natural corn and potato starches and modified cassava starch. Radiation Physics and Chemistry, v. 142, p. 44-49, 2018. DOI: 10.1016/j.radphyschem.2017.09.001

    Abstract: The objective of this work was to evaluate the effect of irradiation treatment on physicochemical properties of three natural polymers, i.e. native potato and corn starches and a typical Brazilian product, cassava starch modified through fermentation-sour cassava- and also to prepare composite hydrocolloid films based on them. Starches were irradiated in a Co-60 irradiation chamber in doses up to 15 kGy, dose rate about 1 kGy/h. Differences were found in granule size distribution upon irradiation, mainly for corn and cassava starch but radiation did not cause significant changes in granule morphology. The viscosity of the potato, corn and cassava starches hydrogels decreased as a function of absorbed dose. Comparing non-irradiated and irradiated starches, changes in the Fourier transform infrared (FTIR) spectra in the 2000-1500 cm(-1) region for potato and corn starches were observed but not for the cassava starch. Maximum rupture force of the starch-based films was affected differently for each starch type; color analysis showed that doses of 15 kGy promoted a slight rise in the parameter b* (yellow color) while the parameter L* (lightness) was not significantly affected; X-ray diffraction patterns remained almost unchanged by irradiation.

    Palavras-Chave: starch; cassava; potatoes; gamma radiation; viscosity; fourier transform spectrometers; x-ray diffraction; infrared spectrometers; radiation effects; absorbed radiation doses; cobalt 60; dose rates; films; irradiation; visible radiation; x radiation

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  • IPEN-DOC 11890

    TAIPINA, MAGDA S. ; COHEN, VICTOR H. ; LAMARDO, LEDA C.A.; DEL MASTRO, NELIDA L. . Contribuicao da ionizacao de alimentos na saude coletiva. Ciencia Saude Coletiva, v. 8, p. 505, 2003.

    Palavras-Chave: food processing; ionizing radiations; gamma radiation; cobalt 60; electron beams; radiation doses; radiopreservation

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  • IPEN-DOC 13694

    TAIPINA, MAGDA S. ; COHEN, VICTOR H. ; LAMARDO, LEDA C.A.; DEL MASTRO, NELIDA L. . Contribuicao da ionizacao de alimentos na saude coletiva. In: CONGRESSO BRASILEIRO DE SAUDE COLETIVA, 7., 29 de julho - 2 de agosto, 2003, Brasilia, DF. Resumo... 2003.

    Palavras-Chave: food processing; ionizing radiations; gamma radiation; cobalt 60; electron beams; radiation doses; radiopreservation

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  • IPEN-DOC 25166

    CHIERENTIN, GABRIEL de S. ; DEL MASTRO, NELIDA L. . Efeito da radiação gama em propriedades reológicas da mucilagem de chia. In: PROGRAMA INSTITUCIONAL DE BOLSAS DE INICIACAO CIENTIFICA E TECNOLOGICA; SEMINARIO ANUAL PIBIC, 24.; SEMINARIO ANUAL PROBIC, 15.; SEMINARIO ANUAL PIBITI, 8, 13-14 de dezembro, 2018, São Paulo, SP. Resumo expandido... São Paulo: IPEN-CNEN/SP, 2018. p. 126-127.

    Palavras-Chave: gamma radiation; radiation effects; seeds; rheology; polysaccharides

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  • IPEN-DOC 26259

    TEIXEIRA, BRUNA S. ; CHIERENTIN, GABRIEL S. ; DEL MASTRO, NELIDA L. . Impact of electron beam irradiation in potato starch films containing hibiscus aqueous extract. In: INTERNATIONAL NUCLEAR ATLANTIC CONFERENCE, October 21-25, 2019, Santos, SP. Proceedings... Rio de Janeiro: Associação Brasileira de Energia Nuclear, 2019. p. 2114-2122.

    Abstract: The development of starch films containing natural antioxidants is one alternative of active packaging. Starch is a well studied natural biopolymer that can be used for the development of biodegradable films because it presents a low cost, is easy to obtain and presents good ability to form films. Hibiscus sabdariffa, commonly known as roselle or red sorrel, is an annual herbaceous sub shrub that contains many types of biocompounds, including organic and phenolic acids. The aim of the present work was to determine the influence of electron beam irradiation on potato starch film containing hibiscus extract. The aqueous hibiscus solution was prepared by boiling for 3 min 1% w/ml dehydrated hibiscus flowers in 500 ml deionized water. The film forming solution was prepared by casting (5% potato starch, 3% glycerol as plasticizer and the hibiscus solution) and irradiated in a 1.5 MeV electron beam accelerator Dynamitron II (Radiation Dynamics Inc.), with doses of 0, 20, 40 and 60 kGy. After drying some mechanical properties were measured. The tensile strength of the control films and the irradiated ones was established. There were no significant differences among them. Hibiscus antioxidants were able to prevent the starch radiation degradation process caused by radiation induced free radicals.

    Palavras-Chave: antioxidants; aqueous solutions; electron beams; irradiation; plants; potatoes; radiation dose units; radicals; starch

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  • IPEN-DOC 26247

    RAO, INA P. ; DEL MASTRO, NELIDA L. . Influence of gamma radiation on centesimal composition and fatty acids profile of macadamia cake. In: INTERNATIONAL NUCLEAR ATLANTIC CONFERENCE, October 21-25, 2019, Santos, SP. Proceedings... Rio de Janeiro: Associação Brasileira de Energia Nuclear, 2019. p. 2000-2006.

    Abstract: Macadamia (Macadamia integrifolia) is an edible nut species with commercial importance also in cosmetic and pharmaceutical industries due to its high concentration in monounsaturated fatty acids and its low cholesterol levels. Macadamia cake or meal is the byproduct obtained after oil removal by cold pressing. The process presents low extraction yields, generating partially defatted meal as a byproduct, being in that way a product with still great potential of nutritious applications. Irradiation is a food processing procedure that allows the extension of shelf life and can guarantee the safety of food products by pathogenic bacteria elimination. The aim of this work was to evaluate the influence of gamma irradiation process on chemical composition and fatty acid profile of Brazilian macadamia cake. The major components of the analyzed macadamia samples were lipids (>50g/100g), especially monounsaturated fatty acids (>39g/100g), carbohydrates and protein. Macadamia nut and cake showed high oleic (>60g/100g) and palmitic acids (>18g/100g). According to present results, gamma radiation had no effect on the centesimal composition and fatty acids profile of the macadamia cake, and did not change its nutritional quality.

    Palavras-Chave: carboxylic acids; chemical composition; cobalt 60; dose rates; food; gamma radiation; irradiation; nuts

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  • IPEN-DOC 23545

    DEL MASTRO, NELIDA L. . Potential use of irradiation on edible insects. Academia Journal of Agricultural Research, v. 4, n. 6, 2016. DOI: 10.15413/ajar.2016.0600

    Abstract: Edible insects attracted a great deal of Western interest in recent years due to their nutritional and environmental advantages, such as low levels of greenhouse gases emission. Insects have high food-to-biomass conversion efficiency, quick growth rate, enormous variety and worldwide distribution, although, until now, there is a limited amount of data on the perception and consumption of insects. By means of irradiation, different kinds of food products are exposed to certain types of radiation (electron beams, gamma and or x-rays) mainly to kill germs without harming the substance under disinfection or making it radioactive. The aim of the present article is to review important aspects of this innovative type of food highlighting that, although insects are unlikely to be consumed raw, edible insects may benefit from the use of irradiation as a measure for food safety.

    Palavras-Chave: ionizing radiations; radiations; food; food processing; insects; sterilization; proteins; safety analysis

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  • IPEN-DOC 13677

    TAIPINA, MAGDA S. ; DEL MASTRO, NELIDA L. . Radiation effects on vitamin A and 'beta'-carotene contents in liver products. Nukleonika, v. 48, n. 1, p. 9-11, 2003.

    Palavras-Chave: biological radiation effects; carotenoids; cattle; food processing; gamma radiation; irradiation; liver; radiation doses; vitamin a

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  • IPEN-DOC 23826

    TAKINAMI, PATRICIA Y.I. ; UEHARA, VANESSA B. ; TEIXEIRA, BRUNA S. ; DEL MASTRO, NELIDA L. . Radiation, plant proteins and sustainability. American Journal of Biological and Environmental Statistics, v. 2, n. 4, p. 28-33, 2016. DOI: 10.11648/j.ajbes.20160204.11

    Abstract: The best sources of proteins for human nourishment come from animal origin. But, conventional meat production involves not only animal suffering but, also, prodigious amounts of water use and significant global warming gases produced per pound of meat. Sustainable plant proteins are good for human beings, as well as, for the planet. Specific natural resources like pulses, in particular, represent a very environmentally friendly and sustainable food source and are rich of high-quality and cost-effective protein ingredients. Ionizing radiation may contribute to food safety and food security. Also, irradiation could serve as an additional food processing method for inactivation or removal of certain antinutritional factors. In this work, the benefits of plant protein sources, particularly pulse protein foods, are highlighted. Moreover, a survey on database since 1970, about the relation among pulses, plant protein and ionizing radiation has been presented. Highlights: Pulses represent a very environmentally friendly and sustainable food source. Pulses are rich sources of high quality and cost effective protein ingredients. Ionizing radiation may contribute to food safety and food security and it could be applied for inactivation or removal of certain antinutritional factors.

    Palavras-Chave: ionizing radiations; proteins; sustainability; nutrition; radiation doses; plants; food; safety

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  • IPEN-DOC 11536

    COSENTINO, HELIO M.; FONTENELE, RINALDO S.; DEL MASTRO, NELIDA L. . Stability of gamma-irradiated carmine. Physica Scripta, v. 118, n. 1-2, p. 223-224, 2005.

    Palavras-Chave: carminic acid; chemical radiation effects; cobalt 60; dyes; food additives; gamma radiation; inks; radiation doses; spectrophotometry

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  • IPEN-DOC 29479

    UEHARA, VANESSA B. ; DEL MASTRO, NELIDA L. . Sustainable packaging materials for the food industry: role of radiation technology. In: INTERNATIONAL CONFERENCE ON APPLICATIONS OF RADIATION SCIENCE AND TECHNOLOGY, 2nd, August 22-26, 2022, Vienna, Austria. Abstract... Vienna, Austria: International Atomic Energy Agency (IAEA), 2022.

    Abstract: Food packaging keeps food safe and fresh and protects products during transport, delivery, and storage. On the other hand, packaging also fills trash containers and landfills, lasting far longer than the products it was made to contain and can also transfer chemicals into our food, with unknown health effects. Disposing massive quantities of wastes generated by nonbiodegradable packaging material pave ways for the study of biopolymers as alternative materials for food packaging. Ionizing radiation is the most effective means to disinfect dry food ingredients and an adequate phytosanitary treatment of food and agricultural commodities. The irradiation of food products is today a mature technology, effective, broad spectrum, residue free that can play an important role in food safety and food security. On the other hand, radiation processing of polymers is an attractive option for the food packaging industry worldwide. Practically every type of physical and chemical assay technique has been utilized for radiation studies on biological molecules. The aim of this article is to present some aspects of our own work on the development of edible films based on a combination of polysaccharide/protein - cassava starch and soy isolate protein - among the general application of irradiation technology on packaging materials.

    Palavras-Chave: food industry; packaging; biodegradation; food processing

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  • IPEN-DOC 26257

    CHIERENTIN, GABRIEL S. ; TEIXEIRA, BRUNA S. ; DEL MASTRO, NELIDA L. . Total phenolic compounds of irradiated chia seeds. In: INTERNATIONAL NUCLEAR ATLANTIC CONFERENCE, October 21-25, 2019, Santos, SP. Proceedings... Rio de Janeiro: Associação Brasileira de Energia Nuclear, 2019. p. 2102-2106.

    Abstract: Chia seeds (Salvia hispanica L.) is a good source of oil, protein, dietary fiber, minerals and polyphenolic compounds. In order to study the influence of the processing methods on the content of phenolic compounds, the objective of this work was to evaluate the effect of gamma radiation, doses 0-20 kGy, on the total phenolic compounds extracted from chia seeds. Seeds were first defatted and extracts produced with proper solvents. Total phenolic content was determined according to Folin-Ciocalteu’s method and the extraction solvents applied were ethanol 100%, ethanol 70%, ethanol 50%, methanol 100%, methanol 70% and methanol 50%. When using ethanol 100%, ethanol 70 %, ethanol 50%, methanol 100% and methanol 70%, the extraction yield was independent of the absorbed dose. With methanol 50%, the irradiation process affected positively the total phenolic yield from of chia seeds. In general, the absorbed dose as well as the nature of the solvent affected the extraction yield, although in a limited manner.

    Palavras-Chave: antioxidants; cobalt 60; dose rates; food processing; gamma radiation; irradiation; radiation dose units; radiation effects; seeds

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  • IPEN-DOC 24042

    SILVA, GILBERTO D. ; RODRIGUES JUNIOR, ORLANDO ; DEL MASTRO, NELIDA L. . Variability of Electron Spin Resonance (ESR) signal of γ -irradiated starches. In: INTERNATIONAL NUCLEAR ATLANTIC CONFERENCE, October 22-27, 2017, Belo Horizonte, MG. Proceedings... Rio de Janeiro, RJ: Associação Brasileira de Energia Nuclear, 2017.

    Abstract: Food preservation is one of the practical applications of radiation processing of materials. Starch is an abundant and cheap nutritious biopolymer and also is the material for appropriate food systems and for technical industries. Starch granules are partially crystalline structures composed mainly of two types of starch: amylose, an essentially linear polymer, and amylopectin, with 3-44% of branch points. Electron spin resonance (ESR) spectroscopy is a very powerful and sensitive method for the characterization of the electronic structures of materials with unpaired electrons. The aim of the present work was to monitor the disappearance of the shortlife and long-life free radicals formed during γ-irradiation of 3 different starches. Corn, potato and fermented cassava starches were irradiated in a 60Co source Gammacell 220 with 20 kGy, dose rate around 1 kGy h-1. EPR spectra were obtained at room temperature using a Bruker EMX plus model, X band equipment. The main type of ESR signal from irradiated starch is a singlet with a g-value of about 2.0. The fading of ESR signals was followed for 350 hours, and presents differences among the different starch type reflecting differences in molecular arrangements of starch crystalline and amorphous fractions, although ESR spectra seemed to be common for all starches.

    Palavras-Chave: cassava; cobalt 60; decay; electron spin resonance; maize; potatoes; radiation effects; radicals; spectroscopy; starch

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  • IPEN-DOC 29883

    DEL MASTRO, NELIDA L. ; GERVASONI, JUANA L.. Women in the nuclear field driving Latin American integration. Journal of Engineering Research, v. 3, n. 35, p. 1-10, 2023. DOI: 10.22533/at.ed.3173352319107

    Abstract: Nuclear energy is used to generate electrical energy, produce radioisotopes, desalinate seawater and produce hydrogen. Nuclear and isotopic techniques contribute to the preservation of water and soil resources and to control pests, ensure food safety and greater food security, as well as improving livestock production and health. The organization of women in the nuclear field (Women in nuclear-WiN) has as one of its functions to make the public aware of the benefits that the application of nuclear energy can bring in all possible applications. This action will help to overcome restrictions from that part of the public that is reticent about using this technology and contribute to Latin American integration. Also, data crossings of the number of related publications are presented, which help to objectively analyze the trend of this integration

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A elaboração do projeto do RI do IPEN foi iniciado em novembro de 2013, colocado em operação interna em julho de 2014 e disponibilizado na Internet em junho de 2015. Utiliza o software livre Dspace, desenvolvido pelo Massachusetts Institute of Technology (MIT). Para descrição dos metadados adota o padrão Dublin Core. É compatível com o Protocolo de Arquivos Abertos (OAI) permitindo interoperabilidade com repositórios de âmbito nacional e internacional.

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O Repositório Digital do IPEN é um equipamento institucional de acesso aberto, criado com o objetivo de reunir, preservar, disponibilizar e conferir maior visibilidade à Produção Científica publicada pelo Instituto, desde sua criação em 1956.

Operando, inicialmente como uma base de dados referencial o Repositório foi disponibilizado na atual plataforma, em junho de 2015. No Repositório está disponível o acesso ao conteúdo digital de artigos de periódicos, eventos, nacionais e internacionais, livros, capítulos, dissertações, teses e relatórios técnicos.

A elaboração do projeto do RI do IPEN foi iniciado em novembro de 2013, colocado em operação interna em julho de 2014 e disponibilizado na Internet em junho de 2015. Utiliza o software livre Dspace, desenvolvido pelo Massachusetts Institute of Technology (MIT). Para descrição dos metadados adota o padrão Dublin Core. É compatível com o Protocolo de Arquivos Abertos (OAI) permitindo interoperabilidade com repositórios de âmbito nacional e internacional.

O gerenciamento do Repositório está a cargo da Biblioteca do IPEN. Constam neste RI, até o presente momento 20.950 itens que tanto podem ser artigos de periódicos ou de eventos nacionais e internacionais, dissertações e teses, livros, capítulo de livros e relatórios técnicos. Para participar do RI-IPEN é necessário que pelo menos um dos autores tenha vínculo acadêmico ou funcional com o Instituto. Nesta primeira etapa de funcionamento do RI, a coleta das publicações é realizada periodicamente pela equipe da Biblioteca do IPEN, extraindo os dados das bases internacionais tais como a Web of Science, Scopus, INIS, SciElo além de verificar o Currículo Lattes. O RI-IPEN apresenta também um aspecto inovador no seu funcionamento. Por meio de metadados específicos ele está vinculado ao sistema de gerenciamento das atividades do Plano Diretor anual do IPEN (SIGEPI). Com o objetivo de fornecer dados numéricos para a elaboração dos indicadores da Produção Cientifica Institucional, disponibiliza uma tabela estatística registrando em tempo real a inserção de novos itens. Foi criado um metadado que contém um número único para cada integrante da comunidade científica do IPEN. Esse metadado se transformou em um filtro que ao ser acionado apresenta todos os trabalhos de um determinado autor independente das variáveis na forma de citação do seu nome.