VANESSA BERNARDO UEHARA

VANESSA BERNARDO UEHARA

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Characteristics of biodegradable films based on cassava starch and soy isolate protein treated by electron beam radiation
2017 - UEHARA, VANESSA B.; MASTRO, NELIDA L. del
Polymers from renewable sources can fulfill in some aspects the needs of consumers without damaging the environment, health and economy. Soy protein concentrate and cassava starch may be considered an alternative to petrochemical polymers. Ionizing radiation processing with gamma rays or electron beam is currently used for the modification of polymers and macromolecules. The widely known ability of proteins and polysaccharides to form films as a starting point for the development of new materials aimed at edible packaging for the food industry was employed. Films based on cassava starch and isolated soy proteins were prepared in two different formulations and electron beam irradiated with 0, 20 and 40 kGy. The tensile strength decreased upon irradiation and yellow color intensified. Regarding thermal properties, no significant differences were observed between irradiated and non-irradiated samples. However, regarding properties such as water vapor permeability and water absorption, the films became less permeable at higher radiation doses. Films with good resistance to water vapor and low water absorption would be considered suitable for food packaging. Radiation seems a convenient tool for the modification of this kind of biopolymeric blends and opens a huge array of possibilities of application.
Radiation, plant proteins and sustainability
2016 - TAKINAMI, PATRICIA Y.I.; UEHARA, VANESSA B.; TEIXEIRA, BRUNA S.; DEL MASTRO, NELIDA L.
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.
A comparison study of regional atmospheric simulations with and elastic backscattering lidar and sunphotometry in an urban area
2009 - LANDULFO, E.; FREITAS, S.R.; LONGO, K.M.; UEHARA, S.T.; SAWAMURA, P.
Gamma radiation influence on technological characteristics of wheat flour
2012 - TEIXEIRA, CHRISTIAN A.H.M.; INAMURA, PATRICIA Y.; UEHARA, VANESSA B.; MASTRO, NELIDA L. del
Mediate gamma radiation effects on some packaged food items
2012 - INAMURA, PATRICIA Y.; UEHARA, VANESSA B.; TEIXEIRA, CHRISTIAN A.H.M.; MASTRO, NELIDA L. del