Research Publications (Food Safety)

Foods rich in anthocyanins are thermally treated to ensure their safety and are stored for a period of time before consumption. Thermal pretreatment could enhance the color and stability of anthocyanins content in most food products. The combination of thermal treatment and storage under subsequent conditions had a significant effect on anthocyanins.

A response surface Bok–Behnken design was utilized to determine the effect of pH (6.5, 6.0, or 5.5), soy protein isolate (SPI: 10.0%, 11.5%, or 13.0% wt/wt), and thyme or oregano essential oil (EO) concentrations (0.22%, 0.25%, or 0.28% wt/wt) on the survival of Salmonella or Listeria cocktails; pH and protein values were chosen according to what is expected for deli meats classified as commercial or economical.

Eudragit RS100 nanoparticles containing Baccharis dracunculifolia DC essential oil (N‐EO) was developed by the nanoprecipitation method. N‐EO presented an average diameter of 151.6 nm, zeta potential (ζ) of +51.7 mV, and encapsulation efficiency of 99.4%. The antibacterial activity of N‐EO and free essential oil (EO) was evaluated in BHI broth against Staphylococcus aureus, Bacillus cereus, Listeria monocytogenes, and Salmonella Enteritidis.

Yellow corn kernels were subjected to gamma (γ) irradiation (1.0–10.0 kGy), post packaging in polypropylene/polyethylene terephthalate/aluminium foil trilamellate. These packaged‐irradiated corn grits were stored under ambient conditions (23 ± 2°C, 80% R.H.) and their shelf lives were ascertained chiefly w.r.t. lutein and aflatoxin contents.

The cold‐resistant bacteria resident in quick‐frozen dumpling were systematically analyzed to estimate the microbial contamination. The results showed that Pseudomonas and Stenotrophomonas were the main microbial sources. Among them, Stenotrophomonas maltophilia was a common environmental or clinical opportunistic pathogen. Therefore, this study further investigated the characteristics of S. maltophilia 4‐1, and five bacteriostatic agents were used to inhibit the strain. S.

A gas chromatography‐mass spectrometry method was developed to determine the chemical composition of alcoholic beverages. Extraction was performed with 280 μl of butyl acetate added to 1.7 ml of the sample and placed into 2 ml gas chromatograph auto‐injector vial. One microliter from the upper organic layer was analyzed. Natural constituents (i.e., phenylethyl alcohol, 4‐hydroxybenzoate) found in beers and wines were profiled.

Fresh green chillies have very short shelf life. Therefore, attempt was made to increase its shelf life using passive modified atmosphere packaging and gamma irradiation treatment at dose levels of 0.1, 0.25, and 0.5 kGy.

In order to identify saccharin jujube more quickly and effectively, this article used hyperspectral imaging technology to explore a new detection method. About 240 winter jujubes under four gradients of saccharin stress were prepared, and the original spectra of them were collected. First, a hybrid method was used to preprocess original spectra, which improved the signal‐to‐noise ratio of spectra.

To safeguard the ecosystem and facilitate the international trade of fresh agricultural products, phytosanitary treatments, particularly newly emerged electron‐beam (e‐beam) irradiation, are recommended because they are eco‐friendly and do not adversely affect postharvest preservation. However, the effects of this technique on “Maehyang” strawberries are unknown.

The migration of eight trace elements (Fe, Sn, Cr, Cd, Pb, Ni, Cu, and Zn) was monitored for fruits canned in uncoated tinplate cans under different storage conditions until the shelf life. The levels of most of these elements significantly increased with storage time and were also affected by storage temperature. Particularly, storage at 40°C (simulating sunlight exposure of the cans) caused important release of Sn and Fe so that canned foods did not comply with regulation.

The objective of this study was to evaluate the possible synergistic interactions on antibacterial and antioxidant efficacy of two plant essential oils (EOs) Eucalyptus caesia Benth and Dracocephalum multicaule Montbr & Auch in vitro and in pear slices.

Pesticide residue and saponin content are two important factors affecting the quality of ginseng products. In this paper, the effects of four new drying processing technologies on pesticide residues and saponins in ginseng were studied. The change in pesticide residue was determined by GC and the content of ginsenoside was determined by HPLC. After the microwave treatment for 32 min, the degradation rate of pesticide residues was best.

Two medicinal plants, African Locust Bean (Parkia biglobosa) and Lonicera japonica, traditionally used in West Africa and China were investigated against four spoilage microorganisms: Bacillus subtilis, Cronobacter dublinensis, Pantoea agglomerans, and Bacillus sp., isolated from mulberry fruit. The aqueous extract of the P.

The enterocin P‐producing Enterococcus lactis strain Q1 was directly added at 107 CFU/g in refrigerated raw beef to evaluate its effectiveness in the control of Listeria monocytogenes EGDe 107776 proliferation. Furthermore, sensorial evaluation of the quality of treated beef meat samples with the enterococcal protective culture was performed basing on color, odor, and appearance parameters for 14 days. As a result, it was demonstrated that the enterocin P‐producing E.

The stereoisomer behavior of sulfoxaflor was investigated liquid chromatography–high‐resolution mass spectrometry during Pu‐erh tea and Black tea processing. Stereoselective separation of the analytes was successfully achieved on Chiral Cel OJ‐3R. Individual optically pure stereoisomer was unstable.

Gluten‐free quinoa flour (QF) with high protein, low asparagine level, and reducing‐sugars as acrylamide producing agents, is a substitute for wheat flour (WF).

The objective of this study was to investigate the antibacterial activity of propolis at different doses and combinations of the same with nisin against Listeria monocytogenes in ice cream. Experimental groups were prepared with propolis in three concentrations (400, 800, and 1,600 mg/L) and combinations of the same with 250 ppm nisin. L.

Sufu is one of the traditional Chinese delicacies. However, sufu often contains excessive biogenic amines (BAs), which is harmful to human health. In order to improve the safety of sufu, this study aimed to investigate BAs production in sufu, as well as the effects of fermented strains (Mucor wutongqiao, M. actinomycetes, and M. rouxianus) and spices (pepper, ginger, and anise) on BAs formation. Results showed that (a) BAs were produced during sufu fermentation.

The effective enhancement of β‐carotene production by Sporidiobolus pararoseus KM281507 was successfully achieved by random mutagenesis using ethyl methanesulfonate (EMS) combined with light irradiation. The mutant S. pararoseus E47 obtained from EMS mutagenesis produced a promising yield of biomass, β‐carotene, and total carotenoids under white light (1,000 Lux).

This paper focused on the determination of the effects of curcumin on extension the shelf life of Oncorhynchus mykiss. The least values of the particle size (10.34 ± 3.8 nm), the total volatile basic nitrogen (11.18 mg/100 g), and the greatest polydispersity index (8.50 ± 0.13) were calculated in a group 5% nanoemulsion after 5 days.

The current study aimed at investigating the impact of nitrogen (N)‐generated cold atmospheric pressure plasma (CAPP) treatment on blueberries focusing on the overall impact on berry quality and microbial load along a storage period of 10 days. Blueberries were treated for 0 (control), 5, and 10 min. Assessment of fruit quality (°Bx, ascorbic acid, anthocyanins, titratable acidity, elasticity, and color parameters) and microbial analysis was performed.

Hydrocolloid gums are extensively used in food industry. Recently, hydrocolloid gums such as gum arabic have been widely researched as edible coatings to extend postharvest life of fruits and vegetables. Therefore, in this study, the efficacy of gum arabic (GA)‐based edible coating was investigated for maintaining quality of persimmon fruits during ambient storage. Persimmon fruits were coated with 0 and 10% GA and stored at 20 ± 1°C and 80 ± 2% RH for 20 days.

Processing methods of grilled pork and performances of the two most used grills were assessed. Twelve experiments were performed with three processors. Results showed that the temperatures recorded in the combustion place of barrel grill (VBG1C) and clay grill (CG2C) reached 466.8 ± 41.7°C and 458.3 ± 90.8°C, respectively. These temperatures exceeded 450°C, value at which uncompleted wood combustion generates polycyclic aromatic hydrocarbons (PAHs).

Bacillus cereus spores pose a challenge to the food industry owing to their ability to germinate in food during storage and produce toxins. The objective of the current study was to investigate the effect of pulsed electric field (PEF) at low electric field strength (i.e., 7.3, 8.1, 8.8 and 9.4 kV/cm) and moderate temperatures (65, 70, 75 and 80°C) on B. cereus spores.

The aim of this research was to observe the combined usability of Enterococcus faecium and Enterococcus durans strains, which are resistant to adverse environmental conditions, together with commercial probiotic starters in the production of probiotic fermented milk. Accordingly, eight different probiotic fermented milks were produced; AF:Lactobacillus acidophilus + Enterococcus faecium, BF:Bifidobacterium animalis subsp.