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Published:Journal of Chromatographic Science,
ISSN 0021-9665 Volume
45, Number 6, July 2007, pp.340-344
Determination of Benomyl Residues in Shiitake Mushrooms
(Lentinula edodes) by Liquid Chromatography with UV Detection
Sandro Navickiene[1], Ozelito Possidônio
de Amarante Junior[1], Natilene Mesquita Brito[1], Luis Antonio
Graciolli[2], and Maria Lúcia Ribeiro[1]
[1]Departamento de Química Orgânica, Universidade
Estadual Paulista, CP 355, 14801-970 Araraquara-SP, Brazil and
[2]Departamento de Biologia e Zootecnia, Universidade Estadual
Paulista, CP 31, 15385-000 Ilha Solteira-SP, Brazil
A method is optimized to determine benomyl (as carbendazim
derivative) in shiitake mushrooms. It is based on the extraction
of the fungicide with an ethyl acetate–hexane mixture and
a further analysis of the extract by high-performance liquid chromatography–
UV. Mean recoveries are evaluated and range from 76% to 86% with
relative standard deviation between 1.1% and 5.8%. The limit of
quantitation (0.5 mg/Kg) is lower than the maximum residue level
established by European legislation. The method is successfully
applied to the analysis of shiitake mushrooms cultivated on eucalyptus
logs treated with Benlate 500 (benomyl as active ingredient) under
natural environmental conditions.
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