Journal
JOURNAL OF FOOD ENGINEERING
Volume 116, Issue 4, Pages 796-800Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.jfoodeng.2013.01.035
Keywords
High hydrostatic pressure (HHP); Pesticide residues; Chlorpyrifos; Cherry tomato
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The reduction of Chlorpyrifos (CP) in cherry tomatoes by High hydrostatic pressure (HHP) treatment was demonstrated and compared with other washing methods. CP is commonly used as a broad-spectrum insecticide in pest control, and high residual levels have been detected in vegetables. Samples were treated at several pressures (0.1-400 MPa) and at two temperatures (5 or 25 degrees C) for 30 min. The optimum HHP conditions for reducing CP were around 75 MPa at 5 degrees C, and the removal rate was about 75%. This removal rate is slightly higher than other treatments such as soaking in ethanol solution and ultrasonic, accompanied by no visual changes (color, size and shape) in appearance. Also, no toxic intermediates were identified in the extracts of the high-pressure treated cherry tomatoes under these experimental conditions. The present results indicate that HHP can be a useful choice for removing residual pesticides. (C) 2013 Elsevier Ltd. All rights reserved.
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