PATRICIA YOKO INAMURA
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Artigo IPEN-doc 24329 Comparison of gamma radiation effects on natural corn and potato starches and modified cassava starch2018 - TEIXEIRA, BRUNA S.; GARCIA, RAFAEL H.L.; TAKINAMI, PATRICIA Y.I.; DEL MASTRO, NELIDA L.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.Resumo IPEN-doc 16306 Rheological analysis of the irradiated pectin/gelatin mixed systems2008 - INAMURA, PATRICIA Y.; PEREIRA, MARCO A.S.; MASTRO, NELIDA L. delArtigo IPEN-doc 12102 Radiation sensitivity of different citric pectins2007 - INAMURA, PATRICIA Y.; MASTRO, NELIDA L. delArtigo IPEN-doc 15139 Gamma radiation effects on the viscosity of green banana flour2009 - UEHARA, VANESSA B.; INAMURA, PATRICIA Y.; MASTRO, NELIDA L. delArtigo IPEN-doc 17179 Efeitos da radiação ionizante em filmes de gelatina adicionados de antioxidante2011 - KRAIDE, FELIPE H.; INAMURA, PATRICIA Y.; MASTRO, NELIDA L. delArtigo IPEN-doc 17154 Rheological evaluation of the irradiated pectin/gelatin mixed systems2011 - INAMURA, PATRICIA Y.; MASTRO, NELIDA L. delArtigo IPEN-doc 15216 Electron beam effects on gelatin polymer2009 - INAMURA, PATRICIA Y.; SHIMAZAKI, KLEBER; SOUZA, CLECIA de M.; COLOMBO, MARIA A.; MOURA, ESPERIDIANA A.B.; MASTRO, NELIDA L. delArtigo IPEN-doc 17862 Mediate gamma radiation effects on some packaged food items2012 - INAMURA, PATRICIA Y.; UEHARA, VANESSA B.; TEIXEIRA, CHRISTIAN A.H.M.; MASTRO, NELIDA L. del