title: Finding of pesticides in fashionable fruit juices by LC-MS/MS and GC-MS/MS.
abstract: Products labelled as containing extracts from two mushrooms (cordyceps plus reishi) and the juices from açaí, goji, mangosteen, noni, pomegranate, and sea buckthorn have been analysed for 174 different pesticides, using the validated QuEChERS method for sample preparation and electrospray LC-MS/MS in the positive ion mode for analysis. Pesticides were found in 10 of the 21 samples analysed. Most pesticides found were below the tolerance levels (1-6 μg/g, depending on the pesticide), but some were not. This included boscalid, dimethomorph, iprovalicarb, pyridaben, pyrimethanil, and imazalil, for which there is no tolerance reported or zero tolerance in any fruit. However, genuine açaí that was harvested in the state of Pará and lyophilised in Rio de Janeiro had no detectable pesticides, when analysed by both LC-MS/MS and GC-MS/MS, which can detect 213 more pesticides and industrial chemicals. Likewise no pesticides were found in one sample each of cordyceps plus reishi, sea buckthorn and noni.
authors: Total Diet and Pesticide Research Center, US Food and Drug Administration, 11510 W 80th St., Lenexa, KS 66214, USA.
authors: Kevin
authors: K
authors: Tran
authors: David
authors: D
authors: Eide
authors: Susan M
authors: SM
authors: Nickols
authors: Michele R
authors: MR
authors: Cromer
authors: Armando
authors: A
authors: Sabaa-Srur
authors: Robert E
authors: RE
authors: Smith
mesh_terms: D001628:Beverages / Q000032:analysis*; D002851:Chromatography, High Pressure Liquid / Q000379:methods*; D005506:Food Contamination / Q000032:analysis*; D005638:Fruit / Q000737:chemistry; D008401:Gas Chromatography-Mass Spectrometry / Q000379:methods*; D010573:Pesticide Residues / Q000032:analysis*; D053719:Tandem Mass Spectrometry / Q000379:methods
chemical_list: D010573:Pesticide Residues