Published 1983 | Version v1
Miscellaneous Metadata-only

Determination of protein content in grains by radioactive thermal neutron capture prompt gamma rays analysis

Creators

Description

The radioactive thermal neutron capture prompt gamma rays technique can be used to determinate the nitrogen content in grains without chemical destruction, with good precision and relative rapidity. This determination is based on the detection of prompt gamma rays emitted by the 14N(n,γ) 15N reaction product. The samples has been irradiated the tanGencial tube of the IEA-R1 research reator and a pair spectrometer has been used for the detection of the prompt gamma rays. The nitrogen content is determinated in several samples of soybean, commonbean, peas and rice, and the results is compared with typical nitrogen content for each grain. (Autor)

Availability note (English)

Available from IPEN, Sao Paulo, Brazil.

Abstract (Portuguese)

A existencia de uma tecnica nao-destrutiva, precisa e rapida,para a determinacao do conteudo de proteinas em graos, e o fator mais importante nos programas de geracao de especies de graos com um alto teor de proteinas. O nivel de proteinas pode ser calculado diretamente pela determinacao da quantidade de nitrogenio nos graos. Mostra-se a tecnica de analise de raios gama prontos de captura radioativa de neutros termicos pode ser utilizada para a determinacao do conteudo de nitrogenio em graos, sem destruicao quimica da amostra, com grande precisao e relativa rapidez. Esta determinacao e baseada na deteccao dos raios gama prontos emitidos pelo produto da reacao 14N(n,γ)15N. As amostras sao irradiadas no canal tangencial do reator de pesquisas IEA-R1 e, para a deteccao da radiacao gama e usado um espectrometro de pares. Foi determinada quantidade de nitrogenio em amostras de soja, feijao, ervilha e arroz e os valores obtidos comparados com os conteudos tipicos de nitrogenio para cada grao. (Autor)

Additional details

Additional titles

Original title (Portuguese)
Determinacao do conteudo de proteinas em graos pela analise de raios gama prontos de captura radioativa

Publishing Information

Imprint Pagination
84 p.

INIS

Country of Publication
Brazil
Country of Input or Organization
Brazil
INIS RN
16034149
Subject category
S63: RADIATION, THERMAL, AND OTHER ENVIRONMENTAL POLLUTANT EFFECTS ON LIVING ORGANISMS AND BIOLOGICAL MATERIALS;
Resource subtype / Literary indicator
Thesis, Non-conventional Literature
Descriptors DEI
CEREALS; NITROGEN 14 BEAMS; PROMPT GAMMA RADIATION; PROTEINS; QUANTITY RATIO; SEEDS; THERMAL NEUTRONS
Descriptors DEC
BARYONS; BEAMS; ELECTROMAGNETIC RADIATION; ELEMENTARY PARTICLES; FERMIONS; GAMMA RADIATION; GRAMINEAE; HADRONS; ION BEAMS; IONIZING RADIATIONS; NEUTRONS; NUCLEONS; ORGANIC COMPOUNDS; PLANTS; RADIATIONS