%0 Journal Article
%T Occurrence of aflatoxins in peanuts and peanut products consumed in the State of S£¿o Paulo/Brazil from 1995 to 1997
%A Sabino
%A Myrna
%A Milanez
%A Thais Val¨¦ria
%A Lamardo
%A Leda Concei£¿£¿o Antonia
%A Inomata
%A Emiko Ikejiri
%A Zorzetto
%A Maria £¿ngela Pompeu
%A Navas
%A Sandra Aparecida
%A Stofer
%A Monica
%J Revista de Microbiologia
%D 1999
%I Scientific Electronic Library Online
%R 10.1590/S0001-37141999000100016
%X one hundred and thirty seven samples of peanuts and peanut containing foods were collected in markets in the state of s£¿o paulo, brazil, between january 1995 an december 1997. most of the samples were collected by the inspection service of s£¿o paulo secretary of health. the foods included raw peanuts, peanut candies ("pa£¿oca" and "p¨¦ de moleque"), peanut butter, fried/roasted salted peanuts, "torrone", chocolate coated peanuts and salt-coated peanuts. the samples were analyzed for aflatoxins using a thin-layer chromatographic method. about 45% of the samples were positive for aflatoxins and 27% exceeded the limits of the brazilian legislation (30.0 ¦Ìg.kg-1 for aflatoxins b1+g1). the aflatoxins were confirmed by derivatization with trifluoroacetic acid. the 90th percentile was 110.0 in 1995, 60.0 in 1996 and 118.0 ¦Ìg.kg-1 in 1997. the aflatoxins concentration in the raw peanut samples ranged from 5.0 to 382.0 ¦Ìg.kg-1 and 27.1% were above the legal limits. contamination in peanut candies was above the limit in 32.8% of the samples and the aflatoxins levels ranged from 6.0 to 494.0 ¦Ìg.kg-1. contamination of salty peanuts was less frequent, around 10% of the samples and the toxin levels were usually below 10 ¦Ìg.kg-1. the maximum level of contamination, 536.0 ¦Ìg.kg-1, was found in a sample of peanut with a salty coat ("amendoim japon¨ºs"). results of previous studies in peanuts and peanut products in the city of s£¿o paulo from 1980-1987 had 68.75% of the samples with levels greater than the limit 30.0 ¦Ìg.kg-1 and the 90th percentile ranged from 42.0 to 333.0 ¦Ìg.kg-1. in 1994, 36.0% of the samples showed results above the limit and the 90th percentile was 489 ¦Ìg.kg-1. the results show that aflatoxins contamination in peanuts is decreasing but it is still a serious problem in brazil, a country where the climate, the agricultural practices and storage conditions favour fungal growth.
%K aflatoxins
%K peanuts
%K peanut products
%K thin-layer chromatography.
%U http://www.scielo.br/scielo.php?script=sci_abstract&pid=S0001-37141999000100016&lng=en&nrm=iso&tlng=en