Residue levels of captan and trichlorfon in field-treated kaki fruits, individual versus composite samples, and after household processing.
The dissipation of residue levels of captan and trichlorfon in field-treated kaki crops was studied according to good laboratory practices to propose maximum residue limits (MRLs). Residue levels of captan and trichlorfon were analysed by GC/MS and LC-MS/MS, respectively. Residue levels of captan and trichlorfon permitted one to propose MRLs in kaki of 3 and 5 mg kg(-1), respectively. The behaviour of these residues was also studied after peeling and cooking, and in individual fruits versus composite samples. Residue levels of these compounds for individual fruits suggested that a variability factor up to three could be set for the acute risk assessment. Levels of captan decreased by more than 90% after peeling and completely after cooking. Trichlorfon penetrates into the flesh in a proportion of 70% of the residue at the pre-harvest interval. Cooking resulted in a decrease of 27% of residue levels of trichlorfon.
Fernández-Cruz
M L
ML
Departamento de Protección Vegetal, Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA), Carretera de la Coruña km 7.5, E-28040 Madrid, Spain.
Grimalt
S
S
Villarroya
M
M
López
F J
FJ
Llanos
S
S
García-Baudín
J M
JM
D002215:Captan / Q000032:analysis*; D002853:Chromatography, Liquid / Q000379:methods; D004006:Dichlorvos / Q000032:analysis; D029788:Diospyros / Q000737:chemistry*; D005506:Food Contamination / Q000032:analysis; D005511:Food Handling / Q000379:methods; D005638:Fruit / Q000737:chemistry*; D005659:Fungicides, Industrial / Q000032:analysis; D008401:Gas Chromatography-Mass Spectrometry / Q000379:methods; D007306:Insecticides / Q000032:analysis; D010573:Pesticide Residues / Q000032:analysis*; D010797:Phthalimides / Q000032:analysis; D014236:Trichlorfon / Q000032:analysis*; D014675:Vegetables / Q000737:chemistry
D005659:Fungicides, Industrial; D007306:Insecticides; D010573:Pesticide Residues; D010797:Phthalimides; D004006:Dichlorvos; D014236:Trichlorfon; D002215:Captan; C005020:folpet