Journal of Food Science

Sat, 10/12/2019 - 03:22
Escherichia coli O157:H7 is an important foodborne pathogen and has been implicated in numerous food poisoning outbreaks worldwide. Although several microbiological and molecular methods have been developed to detect E. coli O157:H7, the difficulty to rapidly detect low levels of the foodborne bacteria persists. Here, the optimization of a filtration technique to concentrate and rapidly detect E...
Fri, 10/11/2019 - 03:22
The present investigation was aimed at evaluating the occurrence of transferable genes conferring resistance to tetracyclines, macrolide‐lincosamide‐streptogramin B (MLSB), vancomycin, beta‐lactams, and aminoglycosides in 32 samples from eight batches of ready‐to‐eat crickets (Acheta domesticus) commercialized by four European Union producers (two batches per producer). Bacterial DNA extracted...
Tue, 10/08/2019 - 03:22
Carbofuran residue in vegetables is a concern to human health. Direct competitive enzyme‐linked immunosorbent assay (dcELISA) and dipstick immunoassay were developed in the present study. The dcELISA showed a 50% inhibition concentration (IC50) and working range of 1.3 and 0.2 to 7.5 ng/mL, respectively, while the cutoff value of dipstick immunoassay was 20 ng/mL. Applying the two immunoassays,...
Tue, 10/08/2019 - 03:22
A multilayer film containing star anise essential oil and thymol coating layers (SAEO and TH, respectively), with insect repellent and antimicrobial properties, has been developed using bar coating and adhesive lamination processes. Our previous study reported the in vitro activities of this polypropylene film (PP)/SAEO/polyethylene terephthalate film (PET)/TH/low‐density polyethylene film (LDPE...
Tue, 10/08/2019 - 03:22
The present work studied, for the first time, the effect of two technologies on the hydration and germination process of beans: ionizing irradiation and ultrasound. In addition, this work proposed a possible biological effect of ultrasound to describe its effect on grain hydration. Carioca beans were irradiated at doses of 2.3 and 3.8 kGy using γ‐rays, establishing different metabolic activities...
Wed, 10/02/2019 - 03:23
Controlling the free chlorine (FC) availability in wash water during sanitization of fresh produce enhances our ability to reduce microbial levels and prevent cross‐contamination. However, maintaining an ideal concentration of FC that could prevent the risk of contamination within the wash system is still a technical challenge in the industry, indicating the need to better understand wash water...
Wed, 09/25/2019 - 03:21
This study provides phenotypic and molecular analyses of the antibiotic resistance of Ensifer adhaerens strain YX1 (CICC 11008s), a strain that was identified using a polyphasic taxonomy approach. The antibiotic resistance profile of E. adhaerens YX1 was assessed using the Clinical & Laboratory Standards Inst. (CLSI) method. The strain was susceptible to ciprofloxacin, levofloxacin,...
Tue, 09/24/2019 - 03:21
The effects of visual cues on familiarity, expected heat intensity, liking of appearance, emotional and wellness responses, and purchase intent (PI) before and after disclosing information associated with red chili powders were determined using a 3‐point scale, a 15‐cm line scale, a 9‐point hedonic scale, a 15‐cm line scale, and a binomial scale, respectively. In this study, consumers only...
Tue, 09/24/2019 - 03:21
The food industry is advancing at a rapid pace and consumer sensitivity to food safety scares and food fraud scandals is further amplified by rapid communication such as by social media. Academia, regulators, and industry practitioners alike struggle with an evolving issue regarding new terms and definitions including food fraud, food authenticity, food integrity, food protection, economically...
Sun, 09/22/2019 - 03:17
Microwave‐powered cold plasma (CP) treatment was evaluated as a means to increase the antioxidant activity, water solubility, and dispersion stability of prickly pear cactus fruit (Opuntia ficus‐indica (L.) Mill.) extract. The extract (2 g) was treated at various CP generation powers and treatment times at 25 °C to 28 °C. The antioxidant activity of the prickly pear cactus fruit extract increased...
Mon, 09/16/2019 - 11:34
Abstract In the present study, we analyzed the tilmicosin residues in eggs as well as the dietary risks posed by the residual drug to Chinese consumers. Tilmicosin was administrated to laying hens via drinking water in doses of 100 mg/L and 300 mg/L (dose 1 and dose 2) for 5 days. Its residues distribution within egg matrices were detected using a QuEChERS method coupled with liquid...
Thu, 09/12/2019 - 14:14
Abstract In Mexico, there is limited information regarding food consumer behaviors at home. The knowledge of food consumption and food handling practices can help to determine more realistically the exposure to different hazards, such as Salmonella spp. on the population. The main goal of this study was to characterize the food consumption habits of five food groups (fruits and vegetables, fresh...
Tue, 09/10/2019 - 06:55
Abstract A method combining surface‐enhanced Raman scattering (SERS) with a lateral flow strip (LFS) was developed for the quantitative and sensitive analysis of Escherichia coli O157:H7. AuMBA@Ag nanoparticles were prepared as SERS probes, and 4‐methylthiobenzoic acid (MBA) as a Raman reporter was inserted into the interior gap of the Au@Ag core‐shell nanoparticles, which replaced the Au...
Fri, 08/23/2019 - 08:27
Abstract An effective method for the determination of 49 pesticide residues and 17 mycotoxins in wine by a modified QuEChERS (quick, easy, cheap, effective, rugged, and safe) method and ultrahigh‐performance liquid chromatography–tandem mass spectrometry was developed. The target compounds were extracted with 1% (v/v) formic acid–acetonitrile, and no cleanup steps were required. The extracts were...
Wed, 08/21/2019 - 15:00
Abstract Wheat flour may be thermally processed to improve microbiological safety; however, come‐up time for thermal processing of wheat flour is long due to its low thermal conductivity. In the present study, a novel radiofrequency (RF)‐assisted thermal processing approach was investigated for reducing the come‐up time of soft wheat flour (SWF) and for improving microbiological safety. The...
Wed, 08/21/2019 - 08:32
Abstract In this study, silver (Ag), zinc oxide (ZnO), and copper oxide (CuO) metallic nanoparticles were used in preparation of carboxymethyl cellulose (CMC) nanobiocomposite films. Scanning electron microscopy (SEM), X‐ray diffraction (EDXA), water vapor permeability (WVP), ultraviolet and visible light (UV–Vis) spectroscopy, and mechanical and microbial tests were used to determine the...
Tue, 08/20/2019 - 06:04
Abstract Diuron is a urea herbicide that is frequently detected in surface water, groundwater, and marine waters. However, there are few methods or guidelines reported on ensuring the quality of sugarcane and soil. In this study, a method was developed for detecting diuron to ensure the quality and safety of food and sugar. Mass spectrometry was used to identify 3,4‐dichloroaniline as a marker...
Tue, 08/20/2019 - 06:04
Abstract Lactic acid bacteria and Listeria monocytogenes are psychotropic organisms that can grow and compete in food such as lightly preserved fishery products. Predictive microbiology is nowadays one of the leading tools to assess the behavior of bacteria in food and to predict food spoilage. Mathematical models can be used to predict the growth, inactivation or growth probability of bacteria....
Wed, 07/24/2019 - 09:37
Abstract The conventional prolonged parboiling process results in high operation cost and grain darkening, which may limit consumption. Moreover, residue generation by rice industries is another challenge. The objective of this study was to evaluate the use of microwave irradiation during soaking and gelatinization stages of parboiling rice. Processing time, colorimetric profile, broken and...
Tue, 07/23/2019 - 10:20
Abstract Human adenoviruses (HAdVs) are the foodborne enteric pathogens transmitted by the consumption of contaminated shellfish. In this study, the occurrence of enteric adenoviruses in finfish and shellfish was investigated by virus concentration and polymerase chain reaction (PCR). Total plate count, total coliform, and fecal coliform levels were determined and correlated with the presence of...
Tue, 07/02/2019 - 07:28
Abstract Nowadays, Listeria monocytogenes continues to be a major health issue. Therefore, improvements in the speed and reliability of its detection are still needed. In the present study, the combination of real‐time Recombinase Polymerase Amplification (qRPA) with immunomagnetic separation (IMS) is described. The proposed methodology was tested against a real‐time PCR method, and was...
Wed, 06/26/2019 - 07:43
Abstract A total of 600 freshly caught fish samples (200 each of Nile tilapia, flathead grey mullet, and African catfish) were collected from Manzala Lake, Egypt, and analyzed for determination of heavy metal residues using an atomic absorption spectrophotometer. Metal concentrations (µg/g wet weight) were detected in all examined samples in quantities of 0.045, 0.0145, and 0.017 µg/g for Hg; 0....
Tue, 06/25/2019 - 15:58
Abstract In this study, an active antibacterial packaging film was developed by coating a polyethylene terephthalate/polyvinylidene chloride/retort casting polypropylene (PPR) plastic multilayer film with plantaricin BM‐1 and chitosan. The characteristics of the active packaging film and its antibacterial effect for chilled meat preservation were evaluated. Our results indicated that the barrier...
Mon, 06/17/2019 - 12:57
Abstract The evolution of volatile aldehydes and the conversion of oxygenated ityβ‐unsaturated aldehydes (OαβUAs) into furans were compared in four vegetable oils (soybean oil, olive oil [OVO], peanut oil [PO], and perilla oil [PAO]) thermally oxidized at temperatures of 150, 180, and 210 °C for 10 hr/day over a 3‐day period. Results showed that 2 alkyl furans and 23 volatile aldehydes including...
Mon, 06/17/2019 - 11:52
Abstract The fruit of Terminalia chebula Retz., or Tibet Olive, is widely used as a food supplement in China. It possesses some natural antimicrobial properties; however, its chemical composition and antivirulence effects have not been identified. In this work, 29 compounds were identified from the peel of T. chebula fruit by ultra‐high‐performance liquid chromatography‐tandem quadrupole time‐of‐...
Mon, 05/27/2019 - 10:49
Abstract To improve the mechanical and antibacterial properties of chitosan (CS) films, a ternary blend edible film was prepared by incorporating CS, gelatin (GE), and natural cinnamon essential oil (CEo). Scanning electron microscopy (SEM), Atomic force microscopy (AFM), Fourier transform infrared spectroscopy, and X‐ray diffraction were performed to evaluate the films. The mechanical properties...
Mon, 05/27/2019 - 10:44
Abstract Capsicum peppers have not been investigated as sources of quorum sensing (QS) inhibitors. This study aimed to identify compounds in pimenta‐malagueta (Capsicum frutescens) and red pepper (Capsicum annuum) extracts and to evaluate their effect on violacein production in Chromobacterium violaceum ATCC 12472 and C. violaceum CV026, as well as biofilm formation (BF) in Pseudomonas aeruginosa...
Thu, 05/23/2019 - 11:43
Abstract Geotrichum citri‐aurantii causes sour rot in citrus fruits and is responsible for important economic losses during storage. However, the availability of chemical fungicides for the control of this pathogen is limited. Thus, the aim of this research was to evaluate the antifungal efficacy of thymol and carvacrol encapsulated in 2‐hydroxylpropyl‐beta‐cyclodextrin (HP‐β‐CD) (prepared by the...
Wed, 05/22/2019 - 15:00
Abstract Susceptibility profiles were determined for 111 Campylobacter coli strains obtained in 1998 to 1999 and 2015 from market age pigs and pork chops against 22 disinfectants and 9 antimicrobials. Resistance to tetracycline (TET) was observed in 44.4% of 1998 to 1999 strains, and the antibiotic resistance profile was TET. But strains obtained in 2015 from swine and retail pork chops had 75%...
Wed, 05/22/2019 - 12:03
Abstract Brazil is home to a wide variety of flora, including several lesser known species, such as araçá that were processed in this study using two green technologies consecutively: supercritical fluid extraction (SFE) for nonpolar fraction and pressurized liquid extraction. For polar fraction, the experiments followed a central composite design involving ethanol as solvent, with temperature...
Wed, 05/22/2019 - 12:02
Abstract Although sensory appeal influences peanut consumption, peanut varieties are mostly selected based on agronomic traits. As a result, the sensory properties of peanut varieties, especially in southern Africa, are not known. Therefore, the primary objective of the study was to determine the sensory properties of the Malawi peanut varieties and the volatile compounds associated with roasted...
Mon, 05/20/2019 - 11:47
Abstract For addressing the issues of pesticide residue analysis characterized by the trace levels of target analytes and the complexity of sample matrices, a selective extracting material, carbon nanotubes (CNTs)/β‐cyclodextrin (β‐CD) nanocomposite reinforced hollow fiber (HF), was developed. CNTs were chemically modified with β‐CD and then the resultant nanocomposite was immobilized into the...
Mon, 05/20/2019 - 06:49
Abstract The fumigant toxicity of eight individual essential oils (EOs; basil, cinnamon, eucalyptus, mandarin, oregano, peppermint, tea tree, and thyme) and one binary combination (thyme and oregano) for control of the rice weevil, Sitophilus oryzae, were investigated. In bioassays, all individual and combined EOs were toxic to the rice weevil. Eucalyptus EO exhibited the highest toxicity among...
Thu, 05/09/2019 - 09:25
Abstract Thyme essential oil‐loaded microcapsules (TMS) were fabricated using natural polysaccharide chitosan (CS) and sodium alginate (SA) as the shell material via the method of layer‐by‐layer (LBL) assembly. The accumulated release rates of thyme oil and microcapsules at 4 °C were 42.50% and 10.16%, respectively. After heating at 100 °C for 5 hr, the release rate of the 0, 2, 4, 6 layers...
Wed, 05/08/2019 - 15:00
Abstract Gibberellic acid (GA3) was added to three types of beer barley, and the chemical changes to GA3 during the beer brewing process were studied using HPLC. The results demonstrated that the GA3 concentration decreased throughout the malting, mashing, and boiling processes and that no GA3 was detected in the congress wort. A new substance, herein called Substance A, was detected by HPLC...
Wed, 05/08/2019 - 10:18
Abstract Proper food safety training is essential to decrease incidences and overall rates of foodborne illnesses and outbreaks. Though many commercial restaurants should provide proper food safety training to food handler employees, this training is not always offered or effective. Here, we summarize the results of a primary literature study concerning the effectiveness of food safety training...
Mon, 05/06/2019 - 11:54
Abstract Strawberry is a healthy fruit with numerous health‐benefit compounds. Unfortunately, it is highly perishable and occasionally can be contaminated with foodborne pathogens. The overall goal of this study is to evaluate pulsed light (PL) processing for disinfection of strawberries, extension of shelf life, and preservation of quality attributes and compounds that are beneficial to health....
Tue, 04/23/2019 - 15:00
Abstract Fresh produce are vulnerable to pathogens during pre‐ and postharvest stages. Most fresh vegetable and fruits are consumed directly or merely washed with chlorine. We investigated two emerging decontamination technologies, pulse light (PL) and ultraviolet (UV), in combination with washing (referred as water‐assisted PL [WPL] and water‐assisted UV [WUV]). Blueberries, grape tomatoes, and...
Wed, 04/17/2019 - 09:15
Abstract Commercial fermentation for bulk preservation of cucumbers relies on natural microbiota and approximately 1 M sodium chloride (NaCl) brines, resulting in large volumes of high‐salt wastewater. An alternative process utilizing 0.1 M calcium chloride (CaCl2) as the only salt was developed to eliminate NaCl from fermentation brines for reduced environmental impact. This study determined the...
Tue, 04/16/2019 - 12:54
Abstract To enhance the oxidative stability of organogels made from canola oil, 40 ppm sesamol was added to beeswax‐based organogels stored under ultraviolet (UV) light irradiation and 60 or 100 °C thermal oxidation conditions. To study the practical application of organogels as animal fat substitutes, beef tallow was mixed with organogels and their oxidative stability was determined under...
Tue, 03/26/2019 - 10:03
Abstract In this study, we evaluated the temperature requirements for home delivery in Taiwan by considering food safety risks of chilled shrimp that may be contaminated with Vibrio parahaemolyticus. Pathogenic V. parahaemolyticus was chosen because it was the main cause of foodborne outbreaks originating from contaminated seafood in Taiwan. The risk of becoming ill due to consumption of raw...
Tue, 03/12/2019 - 04:42
Abstract Salmonella is one of the most common foodborne pathogens worldwide. Salmonella infections in humans are mainly associated with consumption of poultry products contaminated with this foodborne pathogen. Therefore, strict sanitary measures are necessary to control Salmonella contamination during the slaughtering process of poultry. The objective of this study was to determine the...
Fri, 03/01/2019 - 11:48
Abstract Acrylamide, formed in baked and fried plant‐based foods, is reported to induce numerous adverse effects in cells, animals, and humans. Examples from the literature show that processed potato‐ and cereal‐based products are two major food types that seem to contribute the highest amounts of acrylamide to the diet worldwide. To meet both the demand for gluten‐free products and the interest...
Fri, 03/01/2019 - 11:48
Abstract Contamination of agricultural commodities with ochratoxin A (OTA) is a worldwide concern in recent decades. Consumption of OTA‐contaminated baby foods exerts health implications especially in children as the most vulnerable subpopulations. In the current study, for the first time in Iran, 64 baby foods (rice, wheat, and multigrain) samples from five different brands available in the...
Fri, 03/01/2019 - 11:48
Abstract Acid adaptation in Salmonella Enteritidis was characterized by phenotypic and gene‐expression analyses. S. Enteritidis cells at log‐phase and stationary‐phase were kept at pH 4.5 to 6.0 for 1 to 4 hours. All treatments induced various levels of acid tolerance response that were dependent on pH, exposure time and growth phase. This acid adaptation resulted in tolerance to 50 °C and 8%...
Fri, 03/01/2019 - 11:48
Abstract Human noroviruses (HNoVs) cause significant gastrointestinal disease outbreaks worldwide. Tulane virus (TV) is a cultivable HNoV surrogate widely used to determine control measures against HNoVs. The objective of this study was to determine the heat inactivation kinetics (D‐ and z‐values) of TV in cell‐culture media and on spiked homogenized spinach using the first‐order and Weibull...
Fri, 03/01/2019 - 11:48
Abstract A model was developed to predict the growth of Bacillus cereus from spores during cooling of cooked pasta. Cooked pasta was inoculated with a cocktail of four strains of heat‐shocked (80 °C/10 min) B. cereus spores to obtain a final spore concentration of approximately 2 log CFU/g. Thereafter, growth was determined at isothermal temperatures starting at 10 °C and every three degrees up...
Fri, 03/01/2019 - 11:48
Abstract Bacillus species are common in the environment due to their spore‐forming ability and nutritional versatility and cause food contamination. Bacilli play a significant role in foodborne illnesses and food spoilage. In this study, 52 Bacillus isolates from retail fish and ground beef were identified and differentiated based on 16S rRNA, gyrB, and rpoB gene sequencing. The presence of genes...
Fri, 03/01/2019 - 11:48
Abstract Foodborne illnesses associated with fresh produce have attracted increasing attention in the food industry, scientific and public health communities. Studies have shown that surface properties of fresh produce can affect bacterial attachment and colonization, yet the mechanisms involved remain poorly understood. In our previous work, using colloids as bacterial surrogates, we...
Wed, 03/14/2018 - 12:27
AbstractDetection of residual farm chemicals in agricultural crops is a hot topic in the field of food safety. In this study, ediphenphos residue in rice was detected using surface-enhanced Raman spectroscopy (SERS) on a portable Raman spectrometer. A simple pretreatment method for rice samples was developed, and uniform gold nanorods were used for SERS measurement. Characteristic signals can...

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