Data/hora: 21/06/2024 00:44:09

Biblioteca(s): 	Embrapa Soja.	
Data corrente: 	15/09/2009	
Data da última atualização: 	18/01/2011	
Autoria: 	OLIVEIRA, M. R. R. de; MANDARINO, J. M. G.; MASTRO, N. L. del.	
Afiliação: 	MARCOS R. R. DE OLIVEIRA, IPEN-CNEN; JOSE MARCOS GONTIJO MANDARINO, CNPSo; NELIDA L. DEL MASTRO, IPEN-CNEN.	
Título: 	Radiation-induced electron paramagnetic resonance signal and soybean isoflavones content.	
Ano de publicação: 	2009	
Fonte/Imprenta: 	In: MILLER CONFERENCE ON RADIATION CHEMISTRY, 26., 2009, Keszthely. Abstracts... Budapest: Institute of Isotopes : Hungarian Academy of Sciences; International Atomic Energy Agency, 2009. Ref. P44. Disponível em: <http://www.iki.kfki.hu/miller/BookofAbstracts.pdf>. Acesso em: 15 set. 2009.	
Idioma: 	Inglês	
Conteúdo: 	Flavonoids are found in all higher plants, and many display strong absorption in the UVB spectral region. It has been suggested that they play a role in the protection of plants by screening vital cellular components from damaging UV radiation. The isoflavones from soybean are known to have a number of beneficial health effects and can act as antioxidant i.e. quench oxidation by transferring hydrogen atoms to free radicals. In food, free radicals can be generated by several commonly used industrial processes, such as radiosterilization or heat treatment. EPR spectroscopy has been used to detect radioinduced free radicals in food. Upon gamma-ray irradiation, a new ESR signal was detectable in the vicinity of g = 2.0 region, ascribed to stable cellulose-derivative components and is a good indicator in the identification of irradiated plant samples. In this work the relation between EPR signal induced by gamma irradiation treatment and soybean isoflavones content was investigated. Present results did not show correlation between total isoflavones content and the EPR signal. Nevertheless, some isoflavone contents had a negative correlation with the radiation-induced EPR signal.	
Palavras-Chave: 	Isoflavona; Ressonância paramagnetica.	
Thesagro: 	Soja.	
Categoria do assunto: 	--	
Registro original: 	Embrapa Soja (CNPSO)	
Exemplares: 	CNPSO - (29720-1) - UPC - SP - PP - 11686 -  - 11686 - DIS