Residue distribution, safety evaluation, processing factor and dissipation kinetics of bifenthrin and ethion in date fruits

Abdallah, Osama I.; Alamer, Saleh; Alrasheed, Abdulmajeed M.; Al-Mundarij, Abdullah A.

doi:10.3920/qas2019.1597

Cited by 4 publications

(3 citation statements)

References 23 publications

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“…PHI values were increased by 30% in grapes and about 10% in leaves at the double dose treatment. A 50% increase in PHI value was observed in the double-dose treatment of bifenthrin in palm dates [ 15 ]. However, using a 2% wettable powder (WP) formulation in pear produced no residues after 7 days of application [ 12 ].…”

Section: Resultsmentioning

confidence: 99%

“…Bifenthrin was analyzed using gas chromatography (GC) equipped with an electron capture detector (µECD) [ 14 ] or coupled to mass spectrometry (GC-MS, GC tandem mass spectrometry (MS/MS)) [ 9 , 15 , 16 ] in agricultural commodities. Liquid chromatography coupled to mass spectrometry (LC-MS/MS) is less used to determine bifenthrin and pyrethroids in general [ 11 , 17 ].…”

Section: Introductionmentioning

confidence: 99%

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Bifenthrin Residues in Table Grapevine: Method Optimization, Dissipation and Removal of Residues in Grapes and Grape Leaves

Alhewairini,

Abd El-Hamid,

Ahmed

et al. 2024

Plants

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The QuEChERS method was adjusted to determine bifenthrin residues in grapes and grape leaves. Extraction and cleanup procedures were optimized to decrease co-extracted materials and enhance the detection of bifenthrin. The method was validated per the European Union (EU) Guidelines criteria. Accuracy ranged from 98.8% to 93.5% for grapes and grape leaves, respectively. Precision values were 5.5 and 6.4 (RSDr) and 7.4 and 6.7 (RSDR) for grapes and grape leaves, respectively. LOQs (the lowest spiking level) were 2 and 20 µg/kg for grapes and grape leaves, respectively. Linearity as determination coefficient (R2) values were 0.9997 and 0.9964 for grapes and grape leaves, respectively, in a matrix over 1–100 µg/L range of analyte concentration. This was very close to the value in the pure solvent (0.9999), showing the efficiency of the cleanup in removing the co-extracted and co-injected materials; the matrix effect was close to zero in both sample matrices. Dissipation of bifenthrin was studied in a supervised trial conducted in a grapevine field during the summer of 2023 at the recommended dose and double the dose. Dissipation factor k values were 0.1549 and 0.1672 (recommended dose) and 0.235 and 0.208 (double dose) for grapes and grape leaves, respectively. Pre-harvest interval (PHI) was calculated for the Maximum Residue Limit (MRL) values of the EU database. Residues of bifenthrin were removed effectively from grapes using simple washing with tap water in a laboratory study. Residues reached the MRL level of 0.3 mg/kg in both washing treatments, running or soaking in tap water treatments for 5 min. Removal from leaves did not decrease residue levels to the MRL in grape leaves.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Bifenthrin Residues in Table Grapevine: Method Optimization, Dissipation and Removal of Residues in Grapes and Grape Leaves

Alhewairini,

Abd El-Hamid,

Ahmed

et al. 2024

Plants

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“…The Ministry of Agriculture and Fisheries has several programs in place to improve land productivity and the quality of agricultural products, particularly the dates needed to achieve food security (MAF, 2011a;Al-Hinai et al, 2022a). Recently, interest in date products has increased among international consumers (Abdallah et al, 2019). Improving the date palm products through value addition is essential to increase the production value and quality, reduce postharvest losses, and raise the income of farms and the country's economy.…”

Section: Introductionmentioning

confidence: 99%

Prospects and challenges of date fruit value-addition in Oman

Al-Hinai

Jayasuriya

Pathare

et al. 2022

Qual. Assur. Saf. Crops Foods

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Food loss and waste reduction efforts have received a lot of attention recently because of their importance in enhanc-ing food security and environmental sustainability. Value addition of agricultural products is the key to a higher production rate, fewer food losses, and hence more farm income and a better economy. In Oman, agriculture is represented as the first source of life and date is considered one of the most important permanent cultivated crops. This study aimed to evaluate the value addition process of the date palm products and reveal the challenges associated with the productivity improvement in Oman. Six prominent date value-addition factories were visited for data collection. The most date value-added products found were date with nuts, date syrup, and paste, and industries are using most popular date varieties Khalas and Fardh for the value addition processes. Raw dates are supplied by three farm catego-ries and four process mechanization levels were found in these factories. The financial productivity improvement due to the value addition were evaluated. Date with nuts found to be with the highest productivity ratio that reaching up to 540% in Khalas and 360% in Fardh. Highly productive factories had high mechanization levels (ML3–4). A broader improvement in value addition industry is essential to improve the productivities. This includes increase in number of small and medium enterprises, improve mechanization levels, technology transfer, and capacity building needs and additionally to improve the quality of value-added products which will positively affect the farm income and country’s economy.

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