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Chemical and microbiological assessments of the multi mixture treated by gamma radiation; Avaliacao quimica e microbiologica da multimistura tratada por irradiacao gama

Abstract

In Brazil, the multi mixture have being used since the eighties as an alternative against severe infantile malnutrition of the poorest population. However, its use is still reason of controversies mainly due to: the presence of anti nutritional factors, the microbiological quality and the nutritional value. Considering the routine use of multi mixture in the region, this work aimed to evaluate samples of multi mixture were collected in the metropolitan area of the City of Belo Horizonte/MG for determining the anti nutritional factors (phytic and oxalic acids), the microbiological quality, the centesimal and mineral composition, and still the induced effect in these factors of the gamma radiation. For the analyses, the samples passed by the process of gamma irradiation at doses of: 2, 4, 6, 8 and 10 kGy and then were evaluated anti nutritional factors (phytic acid and oxalic), the microbiological quality (yeasts and molds, Salmonella, Coagulase positive Staphylococcus, Bacillus cereus, coliform to 45 deg C) to full percentage (moisture, ash, proteins, carbohydrates and lipids) and the efficiency of the method of Paramagnetic Electronic Resonance (EPR) in the detection of irradiated samples. The mineral composition of the samples was carried out by the irradiation by Neutronic Activation. The methods  More>>
Publication Date:
Jul 01, 2008
Product Type:
Thesis/Dissertation
Report Number:
INIS-BR-5509
Resource Relation:
Other Information: TH: Diss. (M.Sc.); 161 refs., 24 figs., 19 tabs
Subject:
60 APPLIED LIFE SCIENCES; BACILLUS CEREUS; BIOLOGICAL RADIATION EFFECTS; BIOLOGY; BIOREMEDIATION; BRAZIL; COLIFORMS; DOSE COMMITMENTS; DOSE LIMITS; DOSE RATES; ELECTRON SPIN RESONANCE; NEUTRON ACTIVATION ANALYSIS; OXALIC ACID; PARASITES; PHYTIC ACID; RADIATION DOSES; SALMONELLA; STAPHYLOCOCCUS; STRUCTURAL CHEMICAL ANALYSIS
OSTI ID:
21205840
Research Organizations:
Centro de Desenvolvimento da Tecnologia Nuclear (CDTN/CNEN-MG), Belo Horizonte, MG (Brazil). Programa de Pos-Graduacao em Ciencia e Tecnologia das Radiagcoes, Minerais e Materiais
Country of Origin:
Brazil
Language:
Portuguese
Other Identifying Numbers:
TRN: BR09V2501076389
Availability:
Available from INIS in electronic form
Submitting Site:
BRN
Size:
89 pages
Announcement Date:
Sep 02, 2009

Citation Formats

Goncalves, Cinthia Graciele. Chemical and microbiological assessments of the multi mixture treated by gamma radiation; Avaliacao quimica e microbiologica da multimistura tratada por irradiacao gama. Brazil: N. p., 2008. Web.
Goncalves, Cinthia Graciele. Chemical and microbiological assessments of the multi mixture treated by gamma radiation; Avaliacao quimica e microbiologica da multimistura tratada por irradiacao gama. Brazil.
Goncalves, Cinthia Graciele. 2008. "Chemical and microbiological assessments of the multi mixture treated by gamma radiation; Avaliacao quimica e microbiologica da multimistura tratada por irradiacao gama." Brazil.
@misc{etde_21205840,
title = {Chemical and microbiological assessments of the multi mixture treated by gamma radiation; Avaliacao quimica e microbiologica da multimistura tratada por irradiacao gama}
author = {Goncalves, Cinthia Graciele}
abstractNote = {In Brazil, the multi mixture have being used since the eighties as an alternative against severe infantile malnutrition of the poorest population. However, its use is still reason of controversies mainly due to: the presence of anti nutritional factors, the microbiological quality and the nutritional value. Considering the routine use of multi mixture in the region, this work aimed to evaluate samples of multi mixture were collected in the metropolitan area of the City of Belo Horizonte/MG for determining the anti nutritional factors (phytic and oxalic acids), the microbiological quality, the centesimal and mineral composition, and still the induced effect in these factors of the gamma radiation. For the analyses, the samples passed by the process of gamma irradiation at doses of: 2, 4, 6, 8 and 10 kGy and then were evaluated anti nutritional factors (phytic acid and oxalic), the microbiological quality (yeasts and molds, Salmonella, Coagulase positive Staphylococcus, Bacillus cereus, coliform to 45 deg C) to full percentage (moisture, ash, proteins, carbohydrates and lipids) and the efficiency of the method of Paramagnetic Electronic Resonance (EPR) in the detection of irradiated samples. The mineral composition of the samples was carried out by the irradiation by Neutronic Activation. The methods used were searched in literature. The obtained results suggest that the concentration of the phytic and oxalic acids can not be appropriated for the children with severe nutritional deficit and that it would be necessary additional control in their daily ingestion due to the absorption of essential minerals. In general the samples had presented acceptable microbiological quality for consumption, except by one of it. The data of the centesimal and mineral composition, in the usually recommended portions, showed lower concentration than recommended for children. Any significant alteration in phytic and oxalic acids as well as in the centesimal composition were detected after gamma irradiation. The electronic paramagnetic resonance can be detected irradiated samples. (author)}
place = {Brazil}
year = {2008}
month = {Jul}
}