Ocorrência de aflatoxina em pastas de amendoim (Arachis hypogaea L.)

Fonseca, Homero; Nery, Humberto Del

doi:10.1590/S0071-12761970000100014

Resumos

No presente trabalho os autores analisaram, para aflatoxina, 30 amostras de pasta de amendoim (Arachis hypogaea L.), sendo 10 de urna firma nacional (A), 10 de outra firma nacional (B) e 10 procedentes de 7 firmas dos EE.UU. A extração da aflatoxina foi feita com cloroformio, separada por cromatografia em camada delgada de silicagel-G e quantificada sob luz ultra-violeta. Os resultados mostraram que apenas 3 amostras (10%) não acusaram aflatoxina e eram de procedencia norte-americana; 6 (20%) tinham-na abaixo de 0,05 ppm; 15 (50%) estavam entre 0,05 e 0,25 ppm; 5 outras (16,6%) entre 0,25 e 1,00 ppm e 1 (3,3%) acima de 1,00 ppm. Estes dados exprimem a toxidez total, em termos de Bl. Os autores concluem, que, das amostras nacionais de pasta de amendoim, apenas 3 estariam em condições de serem con sumidas, ainda assim, com restrições. Ressaltam que, uma das amostras da Fabrica B, apresentou um nível de aflatoxina bastante elevado.

In the present work, the Authors studied the incidence of aflatoxin in 30 samples of peanut butter, (Arachis hypogaea, L.) beeing 10 from a Brazilian factory (A), 10 from another Brazilian factory (B) and 10 of 7 brands from U.S.A. The extraction of aflatoxin was made with chloroform, separated by thin-layer chromatography with Silicagel-G and quantified under an ultra-violet lamp. The results showed that only 3 samples (10%) were free from aflatoxin and were of U.S. origin; 6 (20%) had them under 0,05 ppm; 15 (50%) were between 0,05 and 0,25 ppm; 5 (16,6%) between 0,25 and 1,00 ppm. and 1 (3,3%) more than 1,00 ppm. These values express the total toxicity in terms of B1. The Authors have concluded that of the Brazilian samples, only 3 were in a condition for beeing consumed, and those still with some restrictions. They pointed out that one sample of the Factory B, have showed a very high level of aflatoxin.

^IProfessor de Disciplina, Departamento de Tecnologia Rural da ESALQ

^IIQuintoanista, ex-bolsista do Convenio USAID/OSU/ESALQ, junto a este Departamento

RESUMO

No presente trabalho os autores analisaram, para aflatoxina, 30 amostras de pasta de amendoim (Arachis hypogaea L.), sendo 10 de urna firma nacional (A), 10 de outra firma nacional (B) e 10 procedentes de 7 firmas dos EE.UU.

A extração da aflatoxina foi feita com cloroformio, separada por cromatografia em camada delgada de silicagel-G e quantificada sob luz ultra-violeta.

Os resultados mostraram que apenas 3 amostras (10%) não acusaram aflatoxina e eram de procedencia norte-americana; 6 (20%) tinham-na abaixo de 0,05 ppm; 15 (50%) estavam entre 0,05 e 0,25 ppm; 5 outras (16,6%) entre 0,25 e 1,00 ppm e 1 (3,3%) acima de 1,00 ppm.

Estes dados exprimem a toxidez total, em termos de Bl.

Os autores concluem, que, das amostras nacionais de pasta de amendoim, apenas 3 estariam em condições de serem con sumidas, ainda assim, com restrições. Ressaltam que, uma das amostras da Fabrica B, apresentou um nível de aflatoxina bastante elevado.

SUMMARY

In the present work, the Authors studied the incidence of aflatoxin in 30 samples of peanut butter, (Arachis hypogaea, L.) beeing 10 from a Brazilian factory (A), 10 from another Brazilian factory (B) and 10 of 7 brands from U.S.A.

The extraction of aflatoxin was made with chloroform, separated by thin-layer chromatography with Silicagel-G and quantified under an ultra-violet lamp.

The results showed that only 3 samples (10%) were free from aflatoxin and were of U.S. origin; 6 (20%) had them under 0,05 ppm; 15 (50%) were between 0,05 and 0,25 ppm; 5 (16,6%) between 0,25 and 1,00 ppm. and 1 (3,3%) more than 1,00 ppm.

These values express the total toxicity in terms of B1.

The Authors have concluded that of the Brazilian samples, only 3 were in a condition for beeing consumed, and those still with some restrictions. They pointed out that one sample of the Factory B, have showed a very high level of aflatoxin.

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LITERATURA CITADA

Entregue para publicação em 1/12/1970.

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