title: [Food composition tables: laboratory comparative analysis].
abstract: OBJECTIVE
  To evaluate the agreement between macronutrients and food energy values analyzed in laboratory and data of food composition tables and software available in Brazil.
  
  
  METHODS
  Eleven types of food were analyzed totaling 701 samples. Student's t-test was performed consisting of the comparison between the mean values obtained in laboratory and the unique constant value of each table or software at 5% confidence level.
  
  
  RESULTS
  It was noted that depending on the type of food, nutrient and table or software selected for comparison, there were significant statistically differences between laboratory and tables and software data. Concerning the studied types of food it was observed a trend of overestimating protein and carbohydrate content in two tables while carbohydrate content was overestimated in a third table. One of the software programs showed overestimated lipid content and, consequently, the total energetic values while a second software program underestimated all nutrients when compared to laboratory results.
  
  
  CONCLUSIONS
  The results showed it is essential to create a Brazilian food composition table from laboratory data to assure more accurate data.
authors.affiliation: Laboratório de Bromatologia e Microbiologia de Alimentos, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, SP, Brasil. prminerva@yahoo.com.br
authors.forename: Pérola
authors.initials: P
authors.lastname: Ribeiro
authors.forename: Tânia Beninga
authors.initials: TB
authors.lastname: de Morais
authors.forename: Fernando Antonio Basile
authors.initials: FA
authors.lastname: Colugnati
authors.forename: Dirce Maria
authors.initials: DM
authors.lastname: Sigulem
mesh_terms: D000704:Analysis of Variance; D016208:Databases, Factual; D004032:Diet; D004040:Dietary Carbohydrates / Q000032:analysis; D004044:Dietary Proteins / Q000032:analysis; D002149:Energy Intake; D005504:Food Analysis; D006801:Humans; D009753:Nutritive Value; D012984:Software; D014815:Vitamins / Q000032:analysis
chemical_list: D004040:Dietary Carbohydrates; D004044:Dietary Proteins; D014815:Vitamins
vernacular_title: Tabelas de composição química de alimentos: análise comparativa com resultados laboratoriais.