Evaluation of conventionally and organically produced vegetables for high lipophilic organochlorine pesticide (OCP) residues

González, Mariana; Miglioranza, Karina Silvia Beatriz; Moreno, Julia E. Aizpún de; Moreno, Víctor J.

doi:10.1016/j.fct.2004.10.002

Cited by 57 publications

(26 citation statements)

References 22 publications

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“…5,13 Relatively few studies have investigated the plant uptake of organic compounds from contaminated soils. For example, Gonzalez and co-workers have investigated the uptake of organochlorine pesticides (OCPs) by leek, 14 tomato, 15 and lettuce and chard 16 grown on organic farms in the Los Padres Lake watershed in Argentina. In each case OCPs were accumulated in each type of plant studied.…”

Section: Introductionmentioning

confidence: 99%

Uptake and bioavailability of persistent organic pollutants by plants grown in contaminated soil

et al. 2005

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This paper assesses the uptake of persistent organic pollutants (POP's) into plants. In particular, uptake of a-endosulfan, b-endosulfan and endosulfan sulfate from lettuce. The lettuce plants were grown on compost that had previously been contaminated at 10 and 50 mg g À1 per POP. The soil was slurry spiked by adding the appropriate amount of POP in acetone in an approximate ratio of 1 : 2, w/v soil : solvent. The solvent was left to evaporate at ambient temperature for 24 hours. Lettuce plants were grown under artificial daylight for 12 hours a day. The influence of soil ageing on the recovery of POP's from spiked soil samples was also assessed. The average recovery of endosulfan compounds from slurry spiked soil (10, 20 and 40 mg g À1 ) was consistent (92.9 AE 4.4% for n ¼ 9). However, ageing of endosulfan compounds on the slurry spiked soil resulted in lower recoveries (average losses were 12.5% after 14 days ageing of slurry spiked soil). The uptake of POP's was assessed by measuring the amount of endosulfan compounds in roots and leaves from lettuce plants after 10, 20 and 33 days. In addition, control plants grown in uncontaminated soil were monitored and analysed. It was found that endosulfan compounds were present in the roots of all lettuce plants irrespective of soil spike level or age of plant. In the 33 day lettuce plants where the soil was spiked at the highest level (50 mg g À1 ) endosulfan compounds were determined in the leaves. The root to leaf ratio was found to be 3.1 for a-endosulfan, 46.0 for b-endosulfan, and 24.3 for endosulfan sulfate. Spiked lettuce samples were subjected to in vitro gastrointestinal extraction to assess the bioavailability of endosulfan compounds. No detectable endosulfan compounds were determined in the gastric extracts while small quantities (range 0.06-0.12 mg g À1 ) were found in the intestinal extraction. All samples (soil and lettuce) were extracted using pressurised fluid extraction and analysed using gas chromatography with mass selective detection.

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Section: Introductionmentioning

confidence: 99%

Uptake and bioavailability of persistent organic pollutants by plants grown in contaminated soil

et al. 2005

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“…Even though there is no clear effect of organic growing conditions on fruit nutritional value [see review by Dorais and Ehret (2008), Dorais et al (2008)], organically grown foods have lower pesticide residues (Baker et al 2002;Bourn and Prescott 2002;Trewavas 2004). However, organochlorine pesticide (OCP) residues have also been detected on organic fruit and vegetables grown on soil treated with insecticides 5-20 yr earlier, or contaminated from surrounding conventional farms that release pesticides into the environment by volatilization, wind dispersion, rain, and leaching to surface and underground water (Gonzalez et al 2005). From large US data bases on pesticide residues found in conventional, integrated pest management-grown, and organic fruits and vegetables, Baker et al (2002) observed that organically grown foods had about one-third as many residues as conventionally grown foods, and about one-half as many residues as found in integrated pest management samples.…”

mentioning

confidence: 99%

Organic production of vegetables: State of the art and challenges

Dorais¹

2007

Can. J. Plant Sci.

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Dorais, M. 2007. Organic production of vegetables: State of the art and challenges. Can. J. Plant Sci. 87: 1055-1066. In light of the growing concern of Canadians about animal waste, environmental pollution from fertilizers, water quality and greenhouse gas effects, as well as their growing interest in organically grown foods (20% annual growth in North America), the development of sustainable organic production systems for vegetable crops is essential for consumer satisfaction and Canadian grower competitiveness. The target of this paper is to review recent research results on the importance of appropriate soil properties, fertilizers and irrigation management on soil activity, plant growth and environmental health as well as product quality in term of nutritional value and safety issue. Species and cultivar selection, the use of grafting and plant growth promoters will also be discussed. This review will identify new challenges that organic growers have to fulfill in the face of a global market and public awareness of health attributes of food, and then conclude by identifying several prospects for future research with emphasis on the Agriculture and Agri-Food Canada research program.

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“…), properties of plant (root system characteristic, kind and quantity of root exudates, lipoprotein content, specific surface, etc.) (Alexander, 2000;Calvelo Pereira et al, 2006;Chen et al, 2007;Gonzalez et al, 2005;Inui et al, 2008;Mikes et al, 2009;Mo et al, 2008;Skaates et al, 2005;Yang et al, 2008;Yao et al, 2007). For the OCPs with high volatility and relative easy degradation, the concentrations in rehizosphere are generally lower than that in bulk soil, and the results generally appear in the indoor simulation experments.…”

Section: Residual Characteristic Of Organochlorine Pesticides In Soilmentioning

confidence: 89%

Effects of Low-Molecular-Weight-Organic-Acids on the Release Kinetic of Organochlorine Pesticides from Red Soil

Zhao¹,

Xia²,

Wang³

et al. 2011

Pesticides in the Modern World - Risks and Benefits

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Evaluation of conventionally and organically produced vegetables for high lipophilic organochlorine pesticide (OCP) residues

Cited by 57 publications

References 22 publications

Uptake and bioavailability of persistent organic pollutants by plants grown in contaminated soil

Uptake and bioavailability of persistent organic pollutants by plants grown in contaminated soil

Organic production of vegetables: State of the art and challenges

Effects of Low-Molecular-Weight-Organic-Acids on the Release Kinetic of Organochlorine Pesticides from Red Soil

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