RESUMO
In view of the need to in form the producers, dealers and consumers about the capability of the vegetables in being a vehicle for microorganisms, they should receive suitable hygienic and sanitary treatment. This paper aimed at evaluating the microbiological quality of organic and conventional tomatoes (Lycopersiconesculentum Mill.) commercialized in Curitiba city, southern Brazil. Eight samples of conventional tomatoes and four samples of organic tomatoes were collected from different sites. The microbiological analyses for detecting Salmonella spp and molds and yeasts were conducted according to the Compendium of Methods for Microbiological Examination of Foods. Total coliforms and Escherichia coli were analyzed by the PetrifilmTM methodology. The data were analyzed by variance analysis and Tukey tests. No Salmonella sp was isolated from 25 g of tomato samples. The total coliform counts ranged up to 1.4x103CFU/g and Escherichia coli up to 2.3x102 CFU/g in conventional tomatoes. Yeasts and molds were foundin conventional tomato samples up to 2.1x10, and up to 1.04 x 1012 CFU/g in organic tomato samples. This study clearly shows that the tomatoes ought to receive suitable hygienic and sanitary treatment before being commercialized.
Assuntos
Alimentos Orgânicos , Técnicas Microbiológicas , Solanum lycopersicum , SalmonellaRESUMO
OBJETIVOS: caracterizar o estado nutricional e consumo alimentar de adolescentes da rede pública de ensino de São Mateus do Sul, Paraná, Brasil. MÉTODOS: o Índice de Massa Corporal foi calculado e classificado pela proposta da Organização Mundial da Saúde. O consumo alimentar foi obtido pelo Questionário de Freqüência de Consumo Alimentar. Foi utilizada análise descritiva, de freqüência e teste t de Student com p<0,05. RESULTADOS: a maioria dos indivíduos apresentou estado nutricional normal (84% eutróficos, 12% sobrepeso/obesidade e 4% baixo peso). A dieta caracterizou-se por consumo energético adequado, com distribuição de macronutrientes de acordo com as recomendações, sendo maior nos meninos do que nas meninas. Noventa por cento dos adolescentes consumiam ácidos graxos em excesso. Verificou-se consumo adequado de vitamina C (287 mg meninos e 328 mg meninas) e ferro (27 e 21 mg, respectivamente). O consumo de ferro diferiu estatisticamente entre os sexos (t=3,765; p<0,001). CONCLUSÕES: as anormalidades encontradas na alimentação evidenciam a necessidade de conhecer e avaliar o tipo de alimentação oferecida aos alunos, a fim de elaborar estratégias de intervenção dentro e fora das escolas, além de auxiliar a prevenção de problemas de saúde relacionados à alimentação.
OBJECTIVES: to characterize the nutritional status and dietary intake of adolescents attending public schools in the city of São Mateus do Sul, in the State of Paraná, Brazil. METHODS: the Body Mass Index was calculated and classified as proposed by the World Health Organization. Dietary intake was calculated using the Survey of Consumer Food Frequency. Analysis was carried out using descriptive and frequency analysis, and Student's t test with p<0.05. RESULTS: most individuals presented a normal nutritional status (84% being eutrophic, 12% overweight/obese and 4%underweight). The diet was characterized by adequate energy intake, with a distribution of nutrients in accordance with recommendations and higher in boys than in girls. Ninety percent of the adolescents had an excessive intake of fatty acids. There was adequate intake of vitamin C (287 mg and 328 mg for boys and girls respectively) and iron (27 and 21 mg respectively). The consumption of iron differed significantly between the genders (t=3.765; p<0.001). CONCLUSIONS: the abnormalities found in dietary intake demonstrate the need for better understanding and evaluation of the type of food offered to students, as a way of developing strategies for intervention both within and outside of schools, and of helping prevent health problems related to nutrition.