Research Publications (Food Safety)

Schematics of the individual components of the AC@AgNPs active substrate and analyte detection procedure Abstract Malathion is one of the commonly used organophosphate pesticides known to attack the central nervous system, posing a risk to humans and other animals upon exposure. The surface enhanced Raman spectroscopy (SERS) has been identified as an indispensable tool for chemical and biomolecular sensing.

Journal of Food Safety, EarlyView. Food processing techniques reduce pesticide residue accumulation in food components. The present study investigated the effectiveness of simple processing techniques, such as roasting, soaking, autoclaving, and storage conditions on 27 selected pesticides belongs to the class of organophosphates (OPs), organochlorines (OCPs), and pyrethroids (PPs) in pesticide fortified cottonseed.

Journal of Food Safety, EarlyView. In this study, the surface-enhanced Raman spectroscopy (SERS) method was applied to determine florfenicol residues (FF) in chicken meat. Gold nanoparticles were stabilized on the glass slides cost-effectively by “1-dodecanethiol.” Three factors, including “solvent types,” “spectroscopy times,” and “ ratio of gold nanoparticles and samples” were examined to optimize the spectrum acquisition.

Fast detection for heavy metal in vegetables is one of the most important steps to ensure the food safety. A novel method to identify lead pollution levels of lettuce based on hyperspectral image technology was proposed in this study. Firstly, hyperspectral images of lettuce samples cultivated under four lead stress levels (0 mg/L, 50 mg/L, 100 mg/L and 200 mg/L) were collected using hyperspectral image system.

46% of raw and 14% of ready‐to‐eat vegetable samples from Arusha city were contaminated with pesticide residues from the groups of organophosphates pyrethroids and organochlorines. Washing of vegetables twice or more and changing the washing water after each use (p = .01) or peeling (p = .008) was significantly associated with a reduction of pesticide residues in them.

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Journal of Food Safety, EarlyView.

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The inhibition capacity of four combinations of three lactic acid bacteria (LAB) (Lactococcus lactis, Lactobacillus plantarum and Carnobacterium piscicola) has been demonstrated against Listeria monocytogenes in fresh farmed sea bass fillets artificially contaminated. The four combinations gave promising results, having a significant bacteriostatic effect against all tested microflora, during 21 days of vacuum storage at 4 °C.

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