Estudos epidemiolÃgicos e clÃnicos comprovaram que as necessidades de determinados nutrientes importantes nÃo sÃo supridas pela alimentaÃÃo. Desse
modo, à importante que os alimentos bÃsicos da dieta sejam fortificados para suprir as perdas ocorridas no processo de industrializaÃÃo. Assim, este trabalho objetivou estudar o efeito da adiÃÃo de dois tipos (sulfato ferroso â SF e ferro aminoÃcido quelato Ferrochel â FQ) e trÃs nÃveis (30%, 40% e 50% da IngestÃo DiÃria Recomendada â IDR) de ferro e Ãcido fÃlico nas caracterÃsticas da qualidade do bolo em comparaÃÃo ao controle (sem adiÃÃo de ferro). Adicionou-se em cada 100g de farinha de trigo, 4,8, 6,4 e 8mg de ferro, equivalendo, respectivamente, a 30%, 40% e 50% da IDR e 150μg de Ãcido fÃlico. A partir da farinha fortificada, produziram-se bolos que foram caracterizados atravÃs de anÃlises sensoriais, fÃsicas, fÃsicoâ quÃmicas e quÃmicas. Os bolos fortificados nÃo apresentaram diferenÃas estatÃsticas significativas nos seguintes parÃmetros sensoriais: aparÃncia global, cor do miolo, aroma, sabor, aceitaÃÃo geral, atitude de compra, intensidade da maciez e intensidade da doÃura. No parÃmetro cor da crosta, o bolo controle somente apresentou aceitaÃÃo superior ao do bolo fortificado com FQ a 50% de adiÃÃo. Na anÃlise da textura, sà houve diferenÃa na fortificaÃÃo 40%, onde o bolo fortificado com FQ apresentou melhor aceitaÃÃo do que o fortificado com SF. Com relaÃÃo Ãs mÃdias de intensidade da cor da crosta, o bolo controle apresentou mÃdia superior aos bolos SF 30% e FQ 40%. Na intensidade da cor do miolo, sà houve diferenÃa nas mÃdias na fortificaÃÃo 40%, onde o bolo fortificado com SF apresentou mÃdia superior ao fortificado com FQ. Nas anÃlises fÃsicas, fÃsico-quÃmicas e quÃmicas, proteÃnas e pH nÃo diferiram, enquanto umidade e lipÃdios apresentaram diferenÃas significativas do bolo controle com as combinaÃÃes de farinha (tipo de ferro) /fortificaÃÃo (nÃvel de ferro) e entre as fortificaÃÃes. Cinzas e carboidratos apresentaram diferenÃas do bolo controle com as combinaÃÃes de farinha/fortificaÃÃo e o teor de ferro apresentou diferenÃa entre as farinhas, entre as fortificaÃÃes, na interaÃÃo de farinha x fortificaÃÃo e do bolo controle com as combinaÃÃes de farinha /fortificaÃÃo. Concluiu-se que o processo de fortificaÃÃo de bolos com sulfato ferroso e ferro aminoÃcido quelato nos nÃveis de 30%, 40% e 50% da IDR manteve aceitÃvel a qualidade sensorial do produto percebida pelos consumidores, portanto pode ser recomendado como uma alternativa tecnolÃgica viÃvel na fortificaÃÃo de alimentos. / Epidemiological and clinical studies have shown that the needs of certain nutrients are not fulfilled by alimentation. Therefore, it is very important that the basic daily aliments be enriched in order to compensate the nutritional loss occurred in the industrialization process. Hence, this study aims to analyze the effect of the enrichment of two types (ferrous sulphate - FS and Ferrochel amino acid chelate - FQ) and three levels (30, 40, and 50% of Dietary Reference Intakes - DRI) of iron and folic acid in the characteristics of the cake quality. Every 100g of buckwheat flour was enriched with 4.8, 6.4, and 8.0 mg of iron, which is equivalent to 30, 40, and 50% of the DRI, respectively, and with 150μg of folic acid. Sensorial, physical, physical-chemical and chemical analyses were conducted in the cakes made with the enriched flour. The enriched cakes did not present statistical difference in the following sensorial parameters: overall appearance, smoothness, and sweetness. In the parameter crust color, the cake control presented mean of satisfaction statistically higher than that of FQ 50% enriched cake only. In the analysis of texture, difference in the means was found only in the 40% enriched cakes, where the FQ enriched cake presented a mean higher than that of the FS enriched cake. The mean intensity of the crust color was higher in the control cake than in the FS 30% and FQ 40% enriched cakes. Statistical differences in the intensity of the color of the crumb were found in the 40% enriched cakes only, where the mean of the FS cakes was higher than that of the FQ cakes. In the physical, physic-chemical and chemical, analyses, no differences were found in the analyses of proteins and pH. Humidity and lipids were different between the cake control and flour (type of iron)/enrichment combinations and among the enrichments. Differences in the ash and in the carbohydrates were found between the cake control and flour/enrichment combinations, and the iron presented difference among the flours, among the enrichments, in the interaction flour x enrichment and the cake control with the flour/enrichment combinations. It was concluded that the enrichment of the cakes with iron sulfate and iron amino acid chelates of 30, 40, and 50% of the IDR kept acceptable the level of sensorial quality stated by the consumers, and therefore can be a feasible technological alternative of aliments enriching
| Identifer | oai:union.ndltd.org:IBICT/oai:www.teses.ufc.br:1443 |
| Date | 28 September 2004 |
| Creators | Wilma FÃlix CampÃlo |
| Contributors | Maria do Carmo Passos Rodrigues, Dorasilvia Ferreira Pontes, SÃlvia Maria de Freitas |
| Publisher | Universidade Federal do CearÃ, Programa de PÃs-GraduaÃÃo em CiÃncia e Tecnologia de Alimentos, UFC, BR |
| Source Sets | IBICT Brazilian ETDs |
| Language | Portuguese |
| Detected Language | English |
| Type | info:eu-repo/semantics/publishedVersion, info:eu-repo/semantics/masterThesis |
| Format | application/pdf |
| Source | reponame:Biblioteca Digital de Teses e Dissertações da UFC, instname:Universidade Federal do Ceará, instacron:UFC |
| Rights | info:eu-repo/semantics/openAccess |
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