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.

Traditional thermal processing often denatures protein, causing loss of active ingredients and nutrients in dairy products, even the formation of 5-hydroxymethylfurfural (5-HMF) and advanced glycation end products (AGEs). In this study, the high hydrostatic pressure (HHP) combined with moderate heat (50 °C) pre-incubation (MHHP) was utilized to explore the alternative processing to reduce the levels of 5-HMF and AGEs in milk.

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.

Bee pollen (BP) and bee bread (BB) have attracted great attention due to their biological activities including antibacterial activity. However, the mechanism of antibacterial activity is largely unknown.

The aim of this study was to establish a rapid and visual nucleic acid isothermal amplification method for the detection of viable Staphylococcus aureus (S. aureus) in pork and pork products. The method was based on saltatory rolling circle amplification (SRCA) combined with propidium monoazide (PMA). Eighteen S. aureus strains and 29 non-S. aureus strains were used for the specificity evaluation.

The effects of sumac, cumin, black pepper and red pepper diethyl ether extracts on the growth of eight foodborne pathogens (FBP) and their biogenic amine (BA) production were investigated in histidine decarboxylase broth. The antimicrobial effect was determined by the minimum inhibitory (MIC) and minimum bactericidal (MBC) concentrations. Sumac extract showed the highest antimicrobial activity against FBP.

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.

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Deoxynivalenol (DON) is a widely distributed mycotoxin that frequently occurs in various foodstuffs, and poses a health risk to human and animals. Biodegradation of DON to less- or non-toxic substances using naturally existing microorganisms is considered the best approach for DON detoxification. Although various microorganisms capable of detoxifying DON have been reported; however, such studies on probiotic strains are scarce.

Activity-guided fractionation based on in vitro assays was used to identify antibacterial components in the residue wasted in the manufacturing process of aged garlic extract (AGE). Antimicrobial activity of the hexane extract of aged garlic-derived residue (AGR) was evaluated against clinically isolated Gram-positive and -negative bacteria including levofloxacin (LVX)-resistant strains.

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