Valuation, according to determination of impurity, fraud and extraneous materials, toasted and ground coffee produced and/or traded in area of São José do Rio Preto - São Paulo

Abstract

121 samplcs of ground and toasted coífcc have been collected, from 21 brands, during September 1996 through March 1997, in industrial and commercial houses in area of São José do Rio Preto/SP. Samples werc anaJised for: a) detennination and qualification of impurity (sticks and pecls), for which mcthod dcscribed in Normas Analíticas do Instituto Adolfo Lutz has been used; b) fraud through mcthod of bleaching and alkaline hydrolysis and c) determination of light filth through mentioned mcthod in Association of 01Iicial Analytical Chemists-1995. Results showcd that 79,3% samplcs were in disagrcement with prescnt bromatologic Icgislation, being 60,3 % samples for containing extraneous materials, 18,2% samples for containing simultaneously extraneous materials and impurity>I % and 0,8% samples for impurities> 1% (ovcr limit admited), As too extrancous materials, inscct fragment was the one most detect, most1y samples (33,8%) contained betwecn 1 to 5 fragments and maximum amount found of 69 insect fragments, while to impurities was 7%. In the analyses of labels of coffee, 14 from brands collected carried obligatory saying defined by legislation, however 2 of them carricd two registration numbers of the Health Ministry, 4 brands didn't present date of manufacture/ term ofvalidity and/or expression "Indústria Brasileira" and 1 didn't show number of registration.