M. F. N. G. FARAG, MOGEDA M. ABDEL HAFEZ*, HEND MOHAMED ABD-ELMONEM, M. G. SALAMA AND E. A. A. HENDAWY
Department of Pest Physiology Research, Plant Protection Research Institute, Agricultural Research Centre, Giza 12618, Egypt
*(e-mail: mogedamohammed@yahoo.com; Mobile: 00201128992127)
(Received: April 1, 2024; Accepted: May 7, 2024)
ABSTRACT
Improper disposal of waste sunflower cooking oil (WSCO) poses significant environmental challenges and health risks including cancer, heart disease and neurological disorders. Therefore, this study was aimed at using WSCO as a raw material to synthesise maltose polyester (MPE) compound under certain conditions, including 3% Na2CO3 as a catalyst, 144°C temperature and 8 h high vacuum. The physico- chemical characterizations of the resulting products were performed using gas chromatography (GC), Fourier transform infrared (FT-IR) spectroscopy and nuclear magnetic resonance (H1-NMR). Besides these aspects, a comparison of the molluscicidal effects of WSCO and MPE with the recommended methomyl pesticide (RMP) was conducted against Eobania vermiculata snail. The results showed that 1% RMP caused 100% mortality in both juveniles and adults after 14 days of treatment. While, 18% concentrations of WSCO and MPE resulted in mortality rates of 20 and 46.67% in E. vermiculata adults and 33.33 and 53.33% in juveniles, respectively, after 28 days of treatment. Additionally, biochemical investigations showed a decrease in the activity of the amylase and invertase enzymes in adult E. vermiculata snail compared to the control group in all treatments. These findings highlight the potential of using WSCO to produce environmentally-friendly agricultural products for molluscan control, offering a sustainable solution to mitigate the risks associated with WSCO disposal.
Key words: Waste cooking oil, snails, esterification, toxicology, molluscicidal