Prof. Mohamed-Bassem Ali Ashour
Plant Protection, Faculty of Agriculture, Zagazig University, Zagazig, Egypt
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Academic Career Length
48Years (1979-Present)
(Calculated once Scilit publication data is synced: current year − year of first publication + 1)
Representative Publications
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Journal Article
EEEl-Sayed A. El-Sheikh
El-Sayed A. El-SheikhMRMahmoud M. Ramadan
Mahmoud M. RamadanAEAhmed E. El-Sobki
Ahmed E. El-SobkiASAli A. Shalaby
Ali A. ShalabyMMMark R. McCoy
Mark R. McCoyBHBruce Hammock
Bruce Hammock +2
The use of pesticides leads to an increase in agricultural production but also causes harmful effects on human health when excessively used. For safe consumption, pesticide residues should be below the maximum residual limits (MRLs). In this study, the residual levels of pesticides in vegetables and fruits collected from farmers’ markets in Sharkia Governorate, Egypt were investigated using LC-MS/MS and GC-MS/MS. A total number of 40 pesticides were detected in the tested vegetable and fruit samples. Insecticides were the highest group in detection frequency with 85% and 69% appearance in vegetables and fruits, respectively. Cucumber and apple samples were found to have the highest number of pesticide residues. The mean residue levels ranged from 7 to 951 µg kg−1 (in vegetable samples) and from 8 to 775 µg kg−1 (in fruit samples). It was found that 35 (40.7%) out of 86 pesticide residues detected in vegetables and 35 (38.9%) out of 90 pesticide residues detected in fruits exceeded MRLs. Results for lambda-cyhalothrin, fipronil, dimothoate, and omethoate in spinach, zucchini, kaki, and strawberry, respectively, can cause acute or chronic risks when consumed at 0.1 and 0.2 kg day−1. Therefore, it is necessary for food safety and security to continuously monitor pesticide residues in fruits and vegetables in markets.
1 November 1987 in Analytical Biochemistry
Journal Article
Mohamed-Bassem Ali AshourSGShirley J. Gee
Shirley J. Gee
BHBruce D. Hammock
Bruce D. Hammock
1 June 1987 in Biochemical Pharmacology
Journal Article
Mohamed-Bassem Ali AshourBHBruce D. Hammock
Bruce D. Hammock
Journal Article
EEEl-Sayed A. El-Sheikh
El-Sayed A. El-Sheikh
Dongyang LiIHIbrahim Hamed
Ibrahim HamedMohamed-Bassem Ali AshourBHBruce Hammock
Bruce HammockPesticides are used on fruit and vegetable crops to obtain greater yield and quality. Residues can be detected in these crops or their products if applied pesticides do not degrade naturally. Therefore, this study aimed to estimate pesticide residues in some strawberry and tomato-based products available in the market for human consumption and associated dietary risks. Contamination with 3–15 pesticides in the tested samples was found. The total number of pesticides detected in the tested samples was 20, belonging to the group of insecticides (84%) and fungicides (16%). Pesticides of cypermethrin, thiamethoxam, chlorpyrifos, and lambda-cyhalothrin appeared at 100% in a number of samples, where the most detected was cypermethrin followed by thiamethoxam. The average values of pesticide residues detected in the tested samples ranged from 0.006 to 0.568 mg kg−1, where it was found that cypermethrin had the highest residue value and appeared in strawberry jam obtained from the market. The recovery rate of pesticides from fortified samples with pyrethroids ranged from 47.5% (fenvalerate) to 127% (lambda-cyhalothrin). Home processing of fortified tomato and strawberry samples had a significant effect on reducing residues in tomato sauce and strawberry jam, where the reduction reached 100%. The results of acute and chronic risk assessment showed that their values were much lower than 100%, indicating minimal risk of dietary intake.
1 September 2004 in Ecotoxicology and Environmental Safety
Journal Article
MHMohamed Hendawi
Mohamed Hendawi
Sébastien SauvéMohamed-Bassem Ali AshourPBP Brousseau
P Brousseau
MFMichel Fournier
Michel Fournier
1 July 1987 in Toxicology and Applied Pharmacology
Journal Article
Mohamed-Bassem Ali AshourDMDavid E. Moody
David E. Moody
BHBruce D. Hammock
Bruce D. Hammock
About Me
Dr.Mohamed-Bassem Ashour, Professor Molecular and Environmental Toxicology, former Vice President , Zagazig University(ZU),Egypt. Former Dean and Vice Dean for Graduate Studies and Research, Faculty of Agriculture; and Executive Director, ZU Projects Management Unit. Dr. Ashour earned his Ph.D. degree in chemistry of pesticides. Dr. Ashour is a Rapporteur of a Standing Committee of the Supreme Council of Universities (SCU) to promote faculty members. Dr. Ashour is ZU Contact Person for Interuniversity Learning in Higher Education Project Co-funded by EU Erasmus+programme. Dr. Ashour has over 40 years of experience in contaminants research and has published several original research papers in peer review high quality scientific journals and has written book chapters. His research interests focus on degradation, exposure, metabolism and health impact of contaminants including Chemical- and bio-pesticides. He got a 3- year post-doctoral fellow in Bruce Hammock Laboratory, University of California Davis. The research work involved characterizing esterases responsible for degrading pesticides and drugs in insect and mammalian tissues; transition state mimic esterase inhibitors; immunoassays of toxic chemicals; Biomarkers and Biosensors; recombinant DNA. He is recipient of several major research grants from Egyptian and international funding agents. Dr. Ashour was a member of the SCU high committee of genetic engineering and biotechnology, Ministry of Higher Education , Egypt.