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Doctoral Thesis
DOI
https://doi.org/10.11606/T.89.2009.tde-12062009-185114
Document
Author
Full name
Welliton Donizeti Popolim
E-mail
Institute/School/College
Knowledge Area
Date of Defense
Published
São Paulo, 2009
Supervisor
Committee
Penteado, Marilene De Vuono Camargo (President)
Torres, Elizabeth Aparecida Ferraz da Silva
Zenebon, Odair
Araki, Koiti
Nascimento, Elizabeth de Souza
Title in Portuguese
Análise de sulfitos em sucos de frutas e estimativa de seu consumo por escolares
Keywords in Portuguese
Alimentos e bebidas sulfitados
Análise de sulfitos
Análise por injeção em fluxo
Escolares
Estimativa de ingestão
Método Monier-Williams
Sucos de frutas
Sulfitos
Abstract in Portuguese
No Brasil os dados sobre a utilização dos sulfitos pela indústria de alimentos e pesquisas sobre o seu consumo são escassos. Sendo assim, o objetivo desta pesquisa foi avaliar o nível de sulfitos em sucos de frutas e estimar seu consumo por escolares de 5ª. a 8ª. séries de escolas públicas, do ensino fundamental, do município de São Caetano do Sul-SP, Brasil. Foi aplicado questionário de freqüência de consumo de alimentos (QFCA) em 313 escolares, sendo 56,9 % do sexo feminino e 43,1 % do sexo masculino, com média de idade de 14,7 anos. Os alimentos sulfitados mais consumidos foram os néctares ou sucos de frutas, o açúcar refinado, as batatas fritas congeladas, o coco ralado, o suco de caju e as frutas secas e cristalizadas. Considerando os limites máximos permitidos (LMP) pela legislação brasileira, o consumo de SO2, em mg SO2/kg pc/dia, foi de 0,12 mg SO2/kg pc/dia, sendo que este valor médio corresponde a 17% da IDA (0,7 mg SO2/kg pc/dia). Já os resultados das análises dos sucos de frutas demonstram que a análise por injeção em fluxo (Flow injection analysis - FIA) modificada obteve resultados de sulfitos nas amostras analisadas com menor variação do que aqueles obtidos pelo método Monier-Williams (M-W) otimizado, e que nenhuma amostra ultrapassou os LMP.
Title in English
Analytical determination of sulphites in fruit juices and estimation of their intake by students
Keywords in English
Flow injection analysis
Food additive intake
Fruit juices
Monier-Williams method
Students
Sulphited foods and beverages
Sulphites
Sulphites analytical determination
Abstract in English
In Brazil there are no data on use of sulphites by the food industry and research on their consumption by population. Thus, the objective of this research was to evaluate sulphites in fruits juices and estimate intake sulphites in a group of 5th 8th schoolchildren of public schools in São Caetano do Sul-SP, Brazil. It was applied a food frequency questionnaire (FFQ) at 313 schoolchildrens (56.9% female, 43.1% male and average age 14.7 years). Sulphited products identified were fruits juices, sugar, frozen chips, grated coconut, cashew juice and dried fruits. Considering maximum permitted levels (MPL) stabilished by Brazilian legislation, none of the students exceeded the ADI of 0.70 mg SO2/kg bw/day, with average of consumption of 0.12 mg SO2/kg bw/day (17 % of the ADI). The results of the fruits juices analysis demonstrated flow injection analysis (FIA) modified obtained better results than optimized Monier-Williams method (M-W) and no sample exceeded the MPL.
 
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Publishing Date
2010-04-01
 
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