Volume 7, Issue 3 (Summer 2018)
Arch Hyg Sci 2018, 7(3): 165-173 |
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Hassanzadeh N, Bahramifar N, Mohammad Zaheri F. Food Safety Evaluation of Imidacloprid Residues in Grape Berries at a Different Dose of Spraying. Arch Hyg Sci 2018; 7 (3) :165-173
URL: http://jhygiene.muq.ac.ir/article-1-351-en.html
URL: http://jhygiene.muq.ac.ir/article-1-351-en.html
1- Environmental Science Department Faculty of Natural Resources & Environment Malayer University
2- Environmental Science Department School of Natural Resources & Marine Sciences, Tarbiat Modares University
3- Department of the Environment, College of Basic Science, Hamadan Branch, Islamic Azad University
2- Environmental Science Department School of Natural Resources & Marine Sciences, Tarbiat Modares University
3- Department of the Environment, College of Basic Science, Hamadan Branch, Islamic Azad University
Abstract: (4200 Views)
Background & Aims of the Study: Grape, a crucial agriculture crop of Malayer city, is affected by Vine cicada, Psalmocharias alhageos. Imidacloprid, a neonicotinoid insecticide, provides a good management of this insect. The aim of this research is residue persistence study of imidacloprid on grapes, to estimate its residue deposit, the half-life of degradation and safe pre-harvest consumption time.
Materials & Methods: Residues of imidacloprid were estimated in grape following two recommended types of spraying (80.0 g a.i. ha-1) and duplicates the application rate (160.0 g a.i. ha-1). Samples were collected at 1 h to 21 days after spraying of imidacloprid. The analyses were done by the QuECHERS technique, using HPLC-UV.
Results: The average initial concentration of imidacloprid on grapes found to be 10.58 and 17.56 mg kg-1 at single and double dosages, respectively. These residues of imidacloprid decreased to 97.8% and 98.0%, respectively, at single and double dosages in 15 days, with a half-life period of 2.21 and 2.94 days. Residues of imidacloprid on grapes were less than its MRL value after 7 and 10 days of recommended and double dosage of spraying. Residues of imidacloprid in grape berries at harvest were discovered to below the determination limit.
Conclusions: Consequently, a waiting time of 7 and 10 days is usually recommended for safe consumption of grapes once imidacloprid spraying. Acceptable daily intake (ADI) of imidacloprid is 0.06 mg kg-1 body weight day-1. According to the results of this study, the employment of imidacloprid on the grape looks to be toxicologically acceptable.
Materials & Methods: Residues of imidacloprid were estimated in grape following two recommended types of spraying (80.0 g a.i. ha-1) and duplicates the application rate (160.0 g a.i. ha-1). Samples were collected at 1 h to 21 days after spraying of imidacloprid. The analyses were done by the QuECHERS technique, using HPLC-UV.
Results: The average initial concentration of imidacloprid on grapes found to be 10.58 and 17.56 mg kg-1 at single and double dosages, respectively. These residues of imidacloprid decreased to 97.8% and 98.0%, respectively, at single and double dosages in 15 days, with a half-life period of 2.21 and 2.94 days. Residues of imidacloprid on grapes were less than its MRL value after 7 and 10 days of recommended and double dosage of spraying. Residues of imidacloprid in grape berries at harvest were discovered to below the determination limit.
Conclusions: Consequently, a waiting time of 7 and 10 days is usually recommended for safe consumption of grapes once imidacloprid spraying. Acceptable daily intake (ADI) of imidacloprid is 0.06 mg kg-1 body weight day-1. According to the results of this study, the employment of imidacloprid on the grape looks to be toxicologically acceptable.
Keywords: Food Safety, Grape, Imidacloprid, Maximum Residue Limit (MRL), Confidor, Toxin, Safe (QuECHERS) Method, Iran
Type of Study: Original Article |
Subject:
Environmental Health
Received: 2018/06/30 | Accepted: 2018/09/19 | Published: 2018/10/7
Received: 2018/06/30 | Accepted: 2018/09/19 | Published: 2018/10/7
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