Food and Bioprocess Technology

Wed, 11/06/2019 - 03:16
The solubilization of peanut protein isolate (PPI) powders modified by atmospheric pressure cold plasma (ACP) treatment was studied by scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDS), low-field nuclear magnetic resonance (low-field NMR) spectroscopy, and FTIR spectroscopy. Significant improvements in both the solubility and water holding capacity (WHC) of the PPI...
Mon, 09/23/2019 - 03:14
Herein, we examined the effects of plasma-activated water (PAW) treatment on the native microflora survival, quality maintenance, and antioxidant activity of fresh-cut pears, which were washed with PAW under three different conditions (peak voltage = 6, 8, and 10 kV) for 5 min and then stored at 4 °C for 12 days. Distilled water and sodium hypochlorite treatment were used as control and...
Mon, 09/23/2019 - 03:14
The aim of this study was to evaluate the replacement aspects of conventional methods (petroleum-based solvent and Folch assay) by alternative methods (bio-based and biodegradable solvent 2-methyltetrahydrofuran (MeTHF) and supercritical CO2 (SC-CO2)) for seed oil extraction from anise (Pimpinella anisum L.) and fennel (Foeniculum vulgare Mill.). Results showed that the highest oil yield of...
Mon, 09/23/2019 - 03:14
High-performance electrochemical enzymatic biosensor based on flowerlike α-Fe2O3 nanostructures was successfully developed for the detection of potential food adulterant, formaldehyde (formalin). The biosensor was found to be highly sensitive (744.15 μA mg−1 Lcm−2) with linear range of detection (0.01–0.3 mg/L) and showed high shelf-life (9 weeks) and precision (0.73% RSD) with reasonably good...
Mon, 09/23/2019 - 03:14
This study evaluated the effect of plasma-activated water (PAW) treatment and blanching on the microbial and quality attributes of tiger nuts. In this study, 15 min of single PAW-10 washing and blanching at 60 °C for 5 min (BLN) resulted in 3.53 and 3.51 log CFU/g reductions for Klebsiella pneumoniae and 3.22 and 3.14 log CFU/g for total background bacteria. The sequential treatment of PAW-10 and...
Mon, 09/23/2019 - 03:14
Microchip has been widely used in the biochemical field, but it is rarely applied in the food area. In this paper, an optimal microelectrode model was obtained via the improved evolutionary structural optimization (ESO) method, the effect of topological parameters on the sterilization efficiency was clarified, and the optimized microchip was applied to the sterilization of blueberry juice to...
Thu, 12/06/2018 - 01:11
Publication date: Available online 13 October 2018Source: ToxicologyAuthor(s): Eliza Drwal, Agnieszka Rak, Ewa L. GregoraszczukAbstractPolycyclic aromatic hydrocarbons (PAHs) are common environmental pollutants, which are released as products of incomplete combustion processes. Harmful effects of PAHs exposure on human health are observed in increased morbidity of respiratory, cardiovascular and...
Thu, 12/06/2018 - 01:11
Publication date: Available online 15 October 2018Source: ToxicologyAuthor(s): Maria Rosa Chitolina Schetinger, Tanara V. Peres, Letícia P. Arantes, Fabiano Carvalho, Valderi Dressler, Graciela Heidrich, Aaron B. Bowman, Michael AschnerAbstractHumans are exposed simultaneously to a variety of neurotoxic agents, including manganese (Mn) and methylmercury (MeHg). Therefore, the study of combined...
Sat, 12/01/2018 - 00:00
Abstract The objective of this study was to determine if oranges in the top and bottom layers within a Standard Place Pack were impacted differently by irradiation after long-term storage. ‘Barnfield’ Navel oranges were packed in Standard Place Pack cartons and treated with 0, 0.15, or 1 kGy of gamma irradiation. The fruit were stored for 3 weeks at 5 °C and then for 1 week at...
Mon, 11/19/2018 - 00:00
Abstract The effect of high pressure processing (HPP) at 450 MPa for 10 min, enterocins A and B, thymol, and their combinations on the inactivation of a four-strain cocktail of Listeria monocytogenes and the properties of sliced dry-cured ham during 30 days at 4 and 12 °C was investigated. Enterocins A and B initially reduced L. monocytogenes levels by more than 2.5 log units,...
Fri, 10/05/2018 - 00:00
Abstract The objective of the present work was to evaluate the antimicrobial activity of aqueous extract from solid waste of Araucaria angustifolia seed (pinhão) at concentration of 10 kg/m3 against a broad spectrum of bacteria and fungi and its synergism with heat treatment against Listeria monocytogenes within temperature range of 55–70 °C. Results showed that pinhão coat...
Fri, 07/13/2018 - 00:00
Abstract The objective of this work was to evaluate the effect of microwave power on acrylamide generation, as well as moisture and oil fluxes and quality attributes of microwave-fried potatoes. Concretely, 25 g of potato strips, in 250 mL of fresh oil (at room temperature), were subjected to three different microwave powers (315, 430, and 600 W) in a conventional microwave oven...
Fri, 05/04/2018 - 00:00
Abstract Peanuts are an economically significant crop that is commonly used for edible oil production; however, they are prone to contamination by aflatoxin (AFT)-producing fungi. Common methods to treat edible oils for AFTs often utilize high temperatures (> 100 °C) to thermally degrade the toxins. However, high temperatures often negatively impact product quality. In this...
Fri, 03/23/2018 - 00:00
Abstract To investigate the effect of decontamination treatment on the nutritional attributes of fresh-cut produce, fresh-cut slices of immature bell peppers were soaked in sodium hypochlorite solutions or slightly acidic electrolyzed water with varying concentrations of effective free chlorine. Changes in the residual ratios of the water-soluble nutrients, vitamin C (L-ascorbic...
Mon, 03/05/2018 - 00:00
Abstract The topic of this paper is the investigation of the antibacterial effect of ultrasound (US) towards Salmonella enterica in a rice beverage. The beverage was inoculated at different levels (8 and 5 log CFU/mL) and US-treated; then, a challenge test under refrigeration was carried out. The maximum net power of the equipment was 130 W; the treatment was carried out at 40–...
Tue, 01/09/2018 - 00:00
Abstract Consumption of fresh produce has been linked to multiple outbreaks of serious foodborne illnesses over the past two decades, and the popularity growth of ready-to-eat fruit and vegetable products may be related to the increased incidence of produce-related outbreaks. Because the sources of the pathogenic microorganisms most frequently involved in these outbreaks, E....
Tue, 01/02/2018 - 00:00
Abstract This paper reports the application of an amperometric biosensor for rapid and specific Salmonella Typhimurium detection in milk. This device was developed from self-assembled monolayer technique on a gold screen-printed electrode, using cysteamine thiol. Polyclonal antibodies were oriented by protein A immobilization. The biosensor structure was characterized by cyclic...
Thu, 12/07/2017 - 00:00
Abstract Washing and sanitation of fresh produce are critical for detachment and inactivation of pathogenic and spoilage microorganisms. The overall goal of this study was to evaluate the influence of processing conditions such as washing time, shear stress, and a food grade surfactant on the detachment of Escherichia coli O157:H7 from lettuce leaf surfaces during a simulated...
Mon, 08/14/2017 - 00:00
Abstract Consumers like fried snacks, and taste, color, and texture are key aspects in their preference. However, during frying of foods some toxic compounds, such as furan and acrylamide, are produced. The objective of this work was to mitigate furan and acrylamide formation in potato chips, without affecting their main quality attributes, by using vacuum frying. To accomplish...
Thu, 08/03/2017 - 00:00
Abstract The inactivation and photoreactivation response of six seafood-isolated Listeria monocytogenes and one Listeria innocua strain after pulsed light (PL) treatment was evaluated. The lower inactivation levels found after exposure of treated samples to daylight during the first 90 min of storage confirmed that both L. innocua and L. monocytogenes have the capability to...
Fri, 07/28/2017 - 00:00
Abstract Furan, a potential carcinogenic compound, can be formed in array of processed foods. The objective of this study was to conduct kinetic studies in pineapple juice and assess the interactive effects of pressure (0.1 to 600 MPa) and temperature (30 to 120 °C) on furan formation. Additional experiments were carried out in tomato, watermelon, cantaloupe, kale, and carrot...
Wed, 07/19/2017 - 00:00
Abstract The effect of the bacteriocin lactocin AL705 in combination with high hydrostatic pressure (HHP) on the inactivation of Listeria innocua 7, a nonpathogenic indicator for Listeria monocytogenes, deliberately inoculated (ca. 6.4 log CFU/g) onto the surface of ready-to-eat (RTE) sliced cured-cooked pork loin, was evaluated. Nontreated pork slices (control) and treatments...
Tue, 07/18/2017 - 00:00
Abstract Due to their increasing use in agriculture, the presence of pesticide residues in food and water currently represents one of the major issues for the food safety. Among the pesticides, organophosphate and carbamate species are the most used, and their toxicity is mainly due to their inhibitory effect on acetylcholinesterase (AChE). For this reason, a monoenzymatic...
Sat, 06/17/2017 - 00:00
Abstract The objective of this study was to investigate the effects of 1-methylcyclopropene (1-MCP) combined with UV-C irradiation on postharvest quality of blueberry fruit (Vaccinium spp. Berkeley) stored at 4 ± 1 °C for 8 days. Respiration rate, ethylene production, decay incidence, softness, color, total anthocyanin content, malondialdehyde (MDA) content, titratable acid...
Sat, 05/13/2017 - 00:00
Abstract Allyl isothiocyanate (AITC) is a natural occurring essential oil found in plants of the family Brassicaceae. It is a well-recognized antimicrobial agent against a variety of foodborne pathogens. By vapor and solution deposition methods into raw and de-oiled Laminaria japonica, an edible, brown seaweed, we demonstrate AITC vapor phase activity against Listeria...
Mon, 02/20/2017 - 00:00
Abstract Sprout-related foodborne disease outbreaks are increasingly becoming a concern for food safety. The primary sources of microbial contamination in ready-to-eat sprouts are contaminated seeds, which are improperly disinfected prior to sprouting. In recent years, the application of nonthermal plasmas for seed decontamination is increasingly being investigated as a...
Sat, 02/11/2017 - 00:00
Abstract This study investigated the efficacy of high voltage atmospheric cold plasma (HVACP) treatment on degradation of aflatoxin in corn. Gas type (Air, MA65), relative humidity (5, 40, 80% RH), treatment time (1, 2, 5, 10, 20,and 30 min), mode of reaction, post-treatment storage, stirring of corn material were parameters investigated on degradation of aflatoxin by HVACP...
Mon, 12/19/2016 - 00:00
Abstract In this study, a gliding arc discharge (GAD) microplasma system was designed, and its decontamination effect was investigated on stainless steel (SS), silicone (Si), and polyethylene terephthalate (PET) surfaces artificially contaminated with 8.15 ± 0.28 log cfu/mL of Escherichia coli and 6.18 ± 0.21 log cfu/mL of Staphylococcus epidermidis. Each of the contaminated...