Research Publications (Food Safety)

Honey, a nutritious and healthy product, has recently been the focus of research due to its characteristic chemical composition and a wide variety of biological properties.

Honey is an important bee product with its nutritional and medicinal properties. Characterization of different monofloral honey has importance for focusing on honey’s biocomponents and the potential use of its medicinal applications. Although Black cumin (Nigella sativa L.) is a valuable monofloral honey, there are less study about its both chemical and biochemical study in literature.

Recently, frequent outbreaks of foodborne diseases have attracted increasing attention, and how to rapidly detect foodborne pathogens has also become an urgent issue. Herein, we reported the colorimetric sensor based on chitosan-coated magnetic nanoparticles (CS@MNPs) for rapidly broad-spectrum detection of the total bacterial count, whose color change can be visible to the naked eye without any other sophisticated instruments.

This study aimed to develop a combination of immunomagnetic separation (IMS) and real-time PCR (qPCR) techniques to detect and analyze Salmonella spp. (SAL), Listeria monocytogenes (LM), and Escherichia coli O157:H7 (O157: H7) in meat samples quickly and accurately. Bacteria-specific immunomagnetic beads (IMBs) were prepared from carboxyl magnetic beads and affinity-purified polyclonal antibodies using a novel magnetic bead activator.

Listeria in food, are a serious risk to consumer’s health that may even have a fatal outcome. To analyze Listeria in food, the methods used must provide reliable results and detect all strains of Listeria. Several qPCR systems have been published for the identification of Listeria monocytogenes, innocua, ivanovii, welshimeri and seeligeri. PCR systems for Listeria spp. have also been published. However, they do not detect all known Listeria.

Pomegranate peel extract (PGE) is a new promising natural alternative control substance with large spectrum of activity against wide range of pathogenic microorganisms. In the present study, PGE was firstly investigated as natural antimicrobial against Listeria monocytogenes both in vitro and on fresh-cut fruits. The in vitro results showed quick and strong bactericidal and bacteriostatic activity against five different strains which were almost completely inhibited by the extract.

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