Sample Treatment and Determination of Pesticide Residues in Potato Matrices: a Review

Narenderan, S. T.; Meyyanathan, S. N.

doi:10.1007/s11540-018-9396-x

Cited by 18 publications

(11 citation statements)

References 53 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The degradation process of the chemical in the potato includes microbial and chemical processes that break down the chemical bonds under certain conditions. Currently, information on chemical degradation in the potato is limited, especially for crop component-specific processes, although previous studies made efforts to derive half-lives of chemicals in crops, which yield the data for the overall dissipation process for reference conditions (i.e., 20 °C and open field). 30,31 Thus, in our study, an approximate approach is applied to derive the k d,P values based on the k d,S values of the chemicals based on the assumption that the probability of the breakdown of the chemical bond in potato tissues is linearly correlated to the related probability of the chemical breakdown in the soil at the same temperature.…”

Section: Diffusion Mass and Average Concentration Of Chemicals In Potatomentioning

confidence: 99%

“…Potato, as the most widely consumed root and tuber crop, plays a significant role in the global food security, because potatoes can be easily grown and yield high production rates . However, pesticides and other chemical contaminants have been widely detected in potatoes, , which has become a major population health concern. Diffusion processes play a significant role in the chemical bioaccumulation of pesticides in potatoes from surrounding soils. − , The chemical concentration gradient between the soil, to which several pesticides are directly applied, and potato tissues thermodynamically drives chemicals toward uptake into the potato tubers.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Improving Pesticide Uptake Modeling into Potatoes: Considering Tuber Growth Dynamics

Gong

Fantke

2021

J. Agric. Food Chem.

View full text Add to dashboard Cite

To explore pesticide uptake from soil into a growing potato, a moving-boundary dynamic model is proposed on the basis of the radical diffusion process of a chemical to a sphere. This model, which considers the logistic growth of the potato tuber, describes two hypothetical processes of chemical diffusion within a growing tuber. The model was tested in an illustrative case study for an application of chlorpyrifos. Results indicate that the distribution of chlorpyrifos concentrations along the potato radius is significantly affected by the tuber development. In comparison of our results to results from a classic model using a fixed boundary, the proposed dynamic model yields a quick and big jump for both the average concentration and bioconcentration factor (BCF) of chlorpyrifos in the potato as a result of the sigmoid expansion boundary. Overall, the dynamic model predicts that chlorpyrifos BCFs in the potato at harvest are higher than those using the classical model. In comparison of model results to measured uptake of chlorpyrifos into potato at harvest, the dynamic model shows better performance than the classical model. Our results provide a new perspective on pesticide uptake into potatoes and inform human health risk assessment for pesticides applied at different tuber growth stages.

show abstract

Section: Diffusion Mass and Average Concentration Of Chemicals In Potatomentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Improving Pesticide Uptake Modeling into Potatoes: Considering Tuber Growth Dynamics

Gong

Fantke

2021

J. Agric. Food Chem.

View full text Add to dashboard Cite

show abstract

“…В зависимости от химической природы пестициды подразделяются на неорганические и синтетические органические пестициды. К последним относятся хлорорганические, циклодиеновые, органофосфатные, карбаматные пестициды и синтетические пиретроиды [2]. Из них самыми опасными для окружающей среды и человека являются хлорорганические пестициды (ХОП), Quantification of residual organochlorine pesticides in medicinal plant raw materials containing terpenoids Kopytko Ya.F., Saybel O.L., Burova A.E.…”

Section: Introductionunclassified

Quantification of Residual Organochlorine Pesticides in Medicinal Plant Raw Materials Containing Terpenoids

Kopyt’ko

Saybel

Burova

2022

Vedomosti Nauchnogo tsentra ekspertizy sredstv meditsinskogo pr

View full text Add to dashboard Cite

An important indicator of the safety of plant raw materials and herbal medicinal products is the content of residual pesticides. Its determination is particularly difficult in aromatic plants characterised by a diverse composition of terpenoids co-extracting with organochlorine pesticides and forming numerous degradation products that interfere with the analysis.The aim of the study was to develop and validate an analytical procedure for the quantification of organochlorine pesticides in plant raw materials containing terpenoids, compliant with the requirements of the State Pharmacopoeia of the Russian Federation.Materials and methods: the study analysed samples of morphologically different raw materials from 21 plant species containing terpenoids. The analysis was carried out by GLC-MS on a 450-GC gas chromatograph coupled to a 220-MS ion-trap mass spectrometer (Varian, USA) using a FactorFour VF-5ms quartz capillary column (30 m × 0.25 mm).Results: the authors developed the analytical procedure for organochlorine pesticides in medicinal plant raw materials containing terpenoids. Its specificity was confirmed by retention times and mass spectra for all the tested analytes. The recovery of pesticides was studied on model mixtures of a plant raw material and ranged from 70.04 to 99.27%. The authors established the linearity using a calibration curve for internal standard (4,4'-dibromodiphenyl) concentrations from 1.0 to 18.1 µg/mL. The procedure was linear across the entire studied range; the correlation coefficient equalled 0.999. The trueness and precision of the analytical procedure met the acceptance criteria.Conclusions: the analytical procedure has been put into use at the Testing Centre of VILAR. From 2018 to 2020, 63 samples of 21 types of medicinal plant raw materials were analysed and found to be corresponding to the safety requirements for the organochlorine pesticide content. Residual pesticides were detected in the medicinal plant raw materials in few sporadic cases.

show abstract

“…This comprises of sample research and abstraction method. At that step samples are mixed regularly [17]. Now different acidic solution and buffers are used to enhance the e ciency of extraction [18].…”

Section: Introductionmentioning

confidence: 99%

Development of HPLC Based QuEChERS Method for High Recovery of Fungicides From Vegetable Samples

Majid

Ali

Husssain

et al. 2020

Preprint

View full text Add to dashboard Cite

Vegetables are the most essential part of our diet. Several pesticides are used to kill the pests. These pest cause different diseases on vegetable plants. As a result of which they are getting more and more production of vegetables but there are many hazards for humans. To get rid of this problem, a simple QuEChERS method is used which is based on solvent extraction method in which different salts and acetonitrile were used. In this method clean-up process and extraction were important HPLC technique is used to determine the accurate results. Despicable recoveries of fungicides were ranges between 0.63% to 107.68% at spiking levels and at different factors through percentage RSD between 3.6% to 4.7%. LOD of two fungicides were in the range of 0.0021mg/kg to 0.00181mg/kg and LOQ of two fungicides were in the range of 0.0706mg/kg to 0.00606mg/kg. By varying many factors the recoveries of fungicides may vary. The recoveries of two fungicides may increase by increasing temperature, pH and concentration but decrease with the passage of time due to degradation of fungicides. By this QuEChERS method we get different concentration of fungicides in some vegetables but in Methi vegetables they are absent. And determinations and extraction of fungicides were completed by HPLC technique. QuEChERS method is very efficient and good method for determination of pesticides in various vegetables. Hence our experimental results were validated with this efficient method.

show abstract

Sample Treatment and Determination of Pesticide Residues in Potato Matrices: a Review

Cited by 18 publications

References 53 publications

Improving Pesticide Uptake Modeling into Potatoes: Considering Tuber Growth Dynamics

Improving Pesticide Uptake Modeling into Potatoes: Considering Tuber Growth Dynamics

Quantification of Residual Organochlorine Pesticides in Medicinal Plant Raw Materials Containing Terpenoids

Development of HPLC Based QuEChERS Method for High Recovery of Fungicides From Vegetable Samples

Contact Info

Product

Resources

About