Persistence and Exposure Assessment of Insecticide Indoxacarb Residues in Vegetables

Patra, Sandip; Das, Ashish; Rakshit, Rajiv; Choudhury, Suborna Roy; Roy, Shyamashree; Mondal, Tilak; Samanta, Arunava; Ganguly, Pritam; Alsuhaibani, Amnah Mohammed; Gaber, Ahmed; Brestič, Marián; Skalický, Milan; Hossain, Akbar

doi:10.3389/fnut.2022.863519

Cited by 9 publications

(5 citation statements)

References 28 publications

(33 reference statements)

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“…Wang et al (2022) monitored 37 pesticide residues in 268 litchi samples; up to 11 pesticides were positive simultaneously, and 96.6% of the samples contained at least two pesticides. It is well known that half-life is an important indicator of pesticide safety evaluation; Patra et al (2022) reported that indefencarb degrades rapidly in cabbage and tomato, with a half-life ranging between 1.55 and 2.76 days, and can be safely consumed after spraying for 1 day.…”

Section: Discussionmentioning

confidence: 99%

Pesticide residues risk assessment and quality evaluation of four characteristic fruits in Zhejiang Province, China

Liu

Bei²,

Zheng³

et al. 2023

Front. Environ. Sci.

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Miaoxi yellow peach, lanxi loquat, qingyuan sweet spring tangelo and haining pear are characteristic fruits in Zhejiang Province, China. This study investigated the levels of pesticides in these fruits in Zhengjiang Province, China, along with the associated risk of dietary exposure for consumer. In total, 25 pesticides were detected in the 68 samples. The pesticide detection rate of the samples was 95.59%, and the level of prochloraz in a pear sample was found to be higher than the maximum residue limit (MRL) in China. Overall, the pesticide residues were very low, and residue levels ranged from 0.001 to 1.06 mg/kg, of which 80.88% simultaneously occurred with 2–8 mixed residues. Acetamiprid (54.55%), carbendazim (64.71%), prochloraz (94.74%) and pyraclostrobin (85.71%) had the highest detection rate in the four fruits, respectively. A risk assessment of human exposure to pesticides via the intake of the four fruit types was performed, and the chronic intake risk (HQc) and acute intake risk (HQa) of a single pesticide and the hazard index (HI) of the mixture of pesticides for adults and children from the four fruit types were found to be less than 1, the exposure assessment showed that the levels of pesticides in the four fruit types were safe for human consumption. In addition, the quality of the four fruit types was analyzed and found to be not stable enough. We suggest strengthening standardized planting and management technology to improve product quality and safety, in particular, cultivators should use pesticides reasonably and control the pre-harvest interval (PHI) in order to better protect consumer health.

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Section: Discussionmentioning

confidence: 99%

Pesticide residues risk assessment and quality evaluation of four characteristic fruits in Zhejiang Province, China

Liu

Bei²,

Zheng³

et al. 2023

Front. Environ. Sci.

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“…Pesticide degradation is strongly influenced by biotic (micro- and macroflora) and abiotic (environmental) variables (soil, water, temperature, solar energy, etc.). Wide variations in the degradation pattern of the chemicals may result from any modifications to these parameters [ 29 , 30 , 31 , 32 ]. In an experiment dealing with six different pesticides, including spinetoram in pak choi, it was reported that dissipation of the compounds was faster in open field conditions than in greenhouse conditions due to several environmental factors, including rainfall and sunlight.…”

Section: Discussionmentioning

confidence: 99%

Development of a Modified QuEChERS Method Coupled with LC-MS/MS for Determination of Spinetoram Residue in Soybean (Glycine max) and Cotton (Gossypium hirsutum)

Goon

Kundu

Ganguly

2022

JoX

Self Cite

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An analytical method for the quantitative determination of the insecticide spinetoram in cotton and soybean was established and validated using liquid chromatography tandem mass spectrometry (LC-MS/MS). Spinetoram is the mixture of two spinosyns, 3′-O-ethyl-5,6-dihydro spinosyn J and 3′-O-ethyl spinosyn L. The method involves extraction with ethyl acetate followed by dispersive solid phase extraction (dSPE) clean-up with primary secondary amine (PSA), C18 and graphitised carbon black (GCB). The final quantitation of spinetoram was done by using LC-MS/MS with positive electrospray ionization. The method was reproducible (Horwitz ratio (HorRat) < 0.5 at 25 ng g−1) and validated by the analysis of samples spiked at 25, 50 and 100 ng g−1 in soybean, cotton and soil. The recoveries of spinosyns were found to be more than 85% when spiked at different levels. The identities of spinosyns were confirmed by using the ion ratio. A field dissipation study was conducted in soybean and cotton to find out the environmental fate of spinetoram, and samples were analysed following the proposed analytical method. Both isomers were found to be dissipated quickly. The pre-harvest interval of spinetoram was calculated in different substrates.

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“…Larvae were individually placed in new 25 mL transparent plastic containers with a small piece of net for perching. According to our pretrials, the recommended spraying dosage [32,33], and indoxacarb dissipation rate in the rice field [34,35], we set five gradient concentrations (0.008 mg/L, 0.04 mg/L, 0.2 mg/L, 1 mg/L, 5 mg/L), a control (CK) and solvent control (AC). A solvent control was tested because we first dissolved 10 mg of indoxacarb in 10 µL of acetone before dispersing it in aged tap water.…”

Section: Behavioral Experiments With Indoxacarb Treatmentsmentioning

confidence: 99%

Behavioral and Transcriptomic Analyses in the Indoxacarb Response of a Non-Target Damselfly Species

Jiang,

Wang,

Yao

et al. 2024

Insects

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Ischnura senegalensis, which widely spreads in paddy fields, has the potential to be used as a natural predator of insect pests. However, the application of insecticides in the field could pose a threat to the survival of I. senegalensis. Among these pesticides, indoxacarb, an oxadiazine insecticide, is renowned for its broad-spectrum efficacy against numerous insect pests. In this study, we examined the toxicity of indoxacarb towards the larvae of I. senegalensis. Behavioral experiments and transcriptome analyses were conducted under indoxacarb treatments. Results revealed that indoxacarb induced abnormal body gestures and significant locomotory impairments, which could ultimately reduce the survival rate of the larvae in their natural habitat. Moreover, transcriptome analyses indicated that genes related to muscle function were significantly affected. Interestingly, at lower concentrations of indoxacarb (0.004 mg/L), the larvae seem to detoxify the indoxacarb with the aid of the cytochrome P450 gene. However, under higher concentrations (0.4 mg/L), the sensory abilities of the larvae were significantly diminished, and they were unable to degrade the toxicity of indoxacarb. Our study underscores the importance of carefully evaluating the impact of insecticides on non-target predatory insects before their widespread application.

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Persistence and Exposure Assessment of Insecticide Indoxacarb Residues in Vegetables

Cited by 9 publications

References 28 publications

Pesticide residues risk assessment and quality evaluation of four characteristic fruits in Zhejiang Province, China

Pesticide residues risk assessment and quality evaluation of four characteristic fruits in Zhejiang Province, China

Development of a Modified QuEChERS Method Coupled with LC-MS/MS for Determination of Spinetoram Residue in Soybean (Glycine max) and Cotton (Gossypium hirsutum)

Behavioral and Transcriptomic Analyses in the Indoxacarb Response of a Non-Target Damselfly Species

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