Insecticide Residues in Head Lettuce, Cabbage, Chinese Cabbage, and Broccoli Grown in Fields

Abstract

The residues of four insecticides belonging to different families were studied on head lettuce (Lactuca sativa L. var. capitata L.), cabbage (Brassica oleracea Linn. var. capitata DC.), Chinese cabbage (Brassica pekinensis Skeels), and broccoli (Brassica oleracea var. italica) after pesticide application. To reduce application variability, a tank mix of acetamiprid 20% SP, chlorpyrifos 22.5% EC, deltamethrin 2.4% SC, and methomyl 40% SP was applied at recommended and double doses. Initial deposits of all pesticides on head lettuce were higher than those of the other three crops. The residues of chlorpyrifos and deltamethrin were higher than the maximum residue limits (MRLs) at recommended preharvest intervals (PHIs) on head lettuce and Chinese broccoli treated with higher doses. The residues of methomyl on head lettuce also showed the same phenomenon.

Dissipation Kinetics and the Pre-Harvest Residue Limits of Acetamiprid and Chlorantraniliprole in Kimchi Cabbage Using Ultra-Performance Liquid Chromatography-Tandem Mass Spectrometry

“…Among the various pesticides being used during the cultivation of kimchi cabbage, acetamiprid and chlorantraniliprole are widely used insecticides against moths ( Plutella xylostella and Spodoptera exigua ), aphids ( Lipaphis erysimi and Myzus persicae ), and striped flea beetles ( Phyllotreta striolata ) [12,13]. The neonicotinoid acetamiprid ((E)- N 1 -[(6-chloro-3-pyridyl)methyl]- N 2 -cyano-N 1 -methylacetamidine) is a systemic insecticide, having a translaminar mode of action in the stomach and acting as an acetylcholine receptor agonist.…”

“…The dissipation of chlorantraniliprole has also been studied in tomato, grape, strawberry, and cauliflower [23,24,25,26]. Chen, et al [12] performed a similar field study of acetamiprid on Chinese cabbage ( Brassica pekinensis Skeels ). They compared the residue data with the MRL and suggested the pre-harvest interval, but no degradation kinetics or biological half-lives were studied.…”

Food safety in Thailand 4: comparison of pesticide residues found in three commonly consumed vegetables purchased from local markets and supermarkets in Thailand

“…Pesticide residues have been found in many raw agricultural commodities such as vegetables and fruits, and processed foods worldwide in the past decades (Chen et al, 2011; Chen et al, 2014; Huan et al, 2015; Li et al, 2014; Osei-Fosu et al, 2014; Sapbamrer & Hongsibsong, 2014; Wang et al, 2013; Wanwimolruk et al, 2015a; Wanwimolruk et al, 2015b). Presently, information on pesticide contamination in vegetables in Thailand is limited and systemic investigation is desired to verify the current status of pesticide contamination in food, particularly in vegetables and fruits.…”

Pilotażowe badania pozostałości pestycydów w wybranych świeżych ziołach i warzywach przyprawowych zakupionych w krajowych supermarketach

“…Analizie poddano świeże zioła i warzywa przyprawowe: bazylię, koperek, natkę pietruszki, szczypiorek, melisę, lubczyk, kolendrę oraz miętę. Po przeanalizowaniu danych literaturowych [1, 3,10,31] oraz wytycznych zawartych w aktach prawnych [25,33,34] pobrano po 4 próbki każdego surowca z trzech supermarketów. Miejsca zakupu zakodowano jako próbki numer: 1, 2, 3, gdzie 1 -oznacza produkty z supermarketu 1.…”