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Bruno Henrique Fumes, Mariane Aissa Andrade, Maraíssa Silva Franco, Fernando Mauro Lanças
The determination of residues and contaminants in complex matrices such as in the case of food, environmental and biological samples requires a combination of several steps to succeed in the aimed goal. At least three independent steps are integrated to provide the best available situation to deal with such matrices: (1) a sample preparation technique is employed to isolate the target compounds from the rest of the matrix; (2) a chromatographic (second) step further "purifies" the isolated compounds from the co-extracted matrix interferences; (3) a spectroscopy-based device acts as chromatographic detector (ideally containing a tandem high-resolution mass analyzer) for the qualitative and quantitative analysis...
October 19, 2016: Journal of Separation Science
Johanna Freese, Mihaela Pricop-Jeckstadt, Thorsten Heuer, Matthias Clemens, Heiner Boeing, Sven Knüppel, Ute Nöthlings
Next to the information on frequency of food consumption, information on consumption-day amounts is important to estimate usual dietary intake in epidemiological studies. Our objective was to identify determinants of consumption-day amounts to derive person-specific standard consumption-day amounts applicable for the estimation of usual dietary intake using separate sources to assesss information on consumption probability and amount consumed. 24-h Dietary recall data from the German National Nutrition Survey II (n = 8522; aged 20-80 years) conducted between 2005 and 2007 were analysed for determinants of consumption-day amounts of thirty-eight food and beverage groups using LASSO variable selection for linear mixed-effects models...
2016: Journal of Nutritional Science
Jiao Ren, Xiaoping Wang, Chuanfei Wang, Ping Gong, Xiruo Wang, Tandong Yao
Biomagnification of some persistent organic pollutants (POPs) has been found in marine and freshwater food chains; however, due to the relatively short food chains in high-altitude alpine lakes, whether trophic transfer would result in the biomagnification of POPs is not clear. The transfer of various POPs, including organochlorine pesticides and polychlorinated biphenyls (PCBs), along the aquatic food chain in Nam Co Lake (4700 m), in the central Tibetan Plateau, was studied. The POPs levels in the water, sediment and biota [plankton, invertebrates and fish (Gymnocypris namensis)] of Nam Co were generally low, with concentrations comparable to those reported for the remote Arctic...
October 14, 2016: Environmental Pollution
Emilie Cauchie, Mathieu Gand, Gilles Kergourlay, Bernard Taminiau, Laurent Delhalle, Nicolas Korsak, Georges Daube
In order to control food losses and wastage, monitoring the microbial diversity of food products, during processing and storage is important, as studies have highlighted the metabolic activities of some microorganisms which can lead to spoilage. Knowledge of this diversity can be greatly improved by using a metagenetic approach based on high throughput 16S rRNA gene sequencing, which enables a much higher resolution than culture-based methods. Moreover, the Jameson effect, a phenomenon described by Jameson in 1962, is often used to classify bacterial strains within an ecosystem...
October 12, 2016: International Journal of Food Microbiology
Mónica Díaz-Bao, Patricia Regal, Rocío Barreiro, Cristina A Fente, Alberto Cepeda
A fast and facile method for the fabrication of magnetic molecularly imprinted stir-bars (MMIP-SB) has been developed, using a combination of imprinting technology and magnetite. Magnetite was prepared in the laboratory from the raw and embedded into molecularly imprinted polymers through a process of bulk polymerization. This novel design was applied to the analysis of aflatoxins, one of the most important groups of mycotoxins in terms of occurrence and toxicity. In the context of food safety, molecularly imprinted polymers are a promising tool to achieve selective and accessible methods of extraction for different residues and contaminants...
October 11, 2016: Journal of Chromatography. A
Alessandro Laviano, Gianluca Di Lazzaro Giraldi, Angela Koverech
PURPOSE OF REVIEW: Cachexia is a negative prognostic factor in cancer patients. The pathogenesis is related to a variable combination of reduced food intake and metabolic changes. However, whether nutritional support may contribute to effectively prevent and treat cachexia remains a debated issue. RECENT FINDINGS: Consistent evidence demonstrates that anabolic windows of opportunity occur during the clinical trajectory of cancer patients. Also, the use of specific nutrients, namely omega-3 fatty acids, may enhance the efficacy of nutritional support when tumor-driven inflammatory response is high...
October 7, 2016: Current Opinion in Supportive and Palliative Care
Andreia Alves, Gudrun Koppen, Guido Vanermen, Adrian Covaci, Stefan Voorspoels
Phthalate esters (PEs) are easily metabolized and commonly excreted via urine within 24h, therefore their bioaccumulation potential is thought to be rather low. In the present study, we developed a sample preparation combined with a new microextraction method to measure seven PE metabolites in nails. The use of whole nails did not result in significantly different levels compared to powdered nails, which makes the method very fast and user friendly. The method was validated using whole nails showing good accuracy, satisfactory precision and low limits of quantification (2-14ng/g)...
September 28, 2016: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
Ligia J Dominguez, Mario Barbagallo
PURPOSE OF REVIEW: Physical and cognitive frailty are interrelated and synergistic syndromes more frequently seen in old age, which represent intermediate stages between aging successfully and disability. Poor nutrition is a fundamental determinant for both conditions, while various dietary components are proposed to prevent and/or improve them. This updated review discusses the possible influence of nutritional factors on cognitive frailty and its potential mediators. RECENT FINDINGS: Oxidative stress, low-grade systemic inflammation, neuroinflammation, and altered autophagy, all associated with obesity, metabolic syndrome and insulin resistance, are proposed mechanisms to explain the influence of nutrition on cognitive health...
September 28, 2016: Current Opinion in Clinical Nutrition and Metabolic Care
Hatice Baş, Dilek Pandır, Suna Kalender
Furan forms as a result of thermal treatment of food and induces harmful effects on organisms. In our work, lycopene, furan, and a combination of the two were given to diabetic male rats for 28 days. Hematological changes, total protein and cholesterol, triglyceride, and albumin levels, alanine aminotransferase, aspartate aminotransferase, lactate dehydrogenase, and alkaline phosphatase activities of the serum, malondialdehyde levels, glutathione peroxidase, catalase, glutathione-S-transferase, superoxide dismutase activities, DNA damage in liver tissues and hepatic histopathological alterations were compared to a control group...
September 1, 2016: Arhiv za Higijenu Rada i Toksikologiju
D L McCue, J M Kasper, J D Hommel
BACKGROUND: Motivation for high-fat food is thought to contribute to excess caloric intake in obese individuals. A novel regulator of motivation for food may be Neuromedin U (NMU), a highly-conserved neuropeptide which influences food intake. Although these effects of NMU have primarily been attributed to signaling in the paraventricular nucleus of the hypothalamus (PVN), NMU has also been found in other brain regions involved in both feeding behavior and motivation. We investigate the effects of NMU on motivation for food and food intake, and identify the brain regions mediating these effects...
October 17, 2016: International Journal of Obesity: Journal of the International Association for the Study of Obesity
Lindsey E Minion, Krishnansu S Tewari
Introduction Bevacizumab is a recombinant humanized monoclonal antibody against vascular endothelial growth factor (VEGF) (Avastin; Genetech, Inc, San Francisco, CA). Angiogenesis is blocked by the binding of bevacizumab to VEGF, inhibiting the binding of this ligand to the VEGF receptor. On August 14, 2014 the Food and Drug Administration (FDA) approved use of bevacizumab in persistent, recurrent, or metastatic cervical cancer. Areas Covered Herein we review pharmacodynamics and kinetics, clinical data and treatment-related toxicities of bevacizumab in the treatment of metastatic, recurrent or persistent cervical cancer...
October 17, 2016: Expert Review of Anticancer Therapy
Laura M Schwab-Reese, Corinne Peek-Asa, Edith Parker
BACKGROUND: Contextual factors, such as exposure to stressors, may be antecedents to IPV perpetration. These contextual factors may be amenable to modification through intervention and prevention. However, few studies have examined specific contextual factors. To begin to address this gap, we examined the associations between financial stressors and three types of physical IPV perpetration. METHODS: This analysis used data from Wave IV of The National Longitudinal Study of Adolescent to Adult Health...
December 2016: Injury Epidemiology
Ana Santana, Armindo Melo, Tânia Tavares, Isabel M P L V O Ferreira
The increase of hen egg consumption demands profitable applications for eggshells, including their membranes, in order to minimize environmental and public health problems that could result from their accumulation. This work presents an innovative application for eggshell membranes to obtain an added-value food ingredient that combines maximized ACE-inhibitory and antioxidant activities. Firstly, the use of acetic acid 5% (v/v); and 3-mercaptopropionic acid 1.25 M enabled 63% recovery of eggshell membrane proteins...
October 17, 2016: Food & Function
Meghan R Longacre, Keith M Drake, Linda J Titus, Jennifer Harris, Lauren P Cleveland, Gail Langeloh, Kristy Hendricks, Madeline A Dalton
Breakfast cereals represent the most highly advertised packaged food on child-targeted television, and most ads are for cereals high in sugar. This study examined whether children's TV exposure to child-targeted, high-sugar breakfast cereal (SBC) ads was associated with their consumption of those SBC brands. Parents of 3- to 5-year-old children were recruited from pediatric and Women, Infants, and Children (WIC) clinics in Southern New Hampshire, USA, and completed a cross-sectional survey between April-December 2013...
October 13, 2016: Appetite
A Prica, F Baldassarre, L K Hicks, K Imrie, T Kouroukis, M Cheung
Rituximab is the first monoclonal antibody to be approved for use by the US Food and Drug Administration in cancer. Its role in the treatment of non-Hodgkin lymphoma, including chronic lymphocytic leukaemia (CLL), has evolved significantly. We aimed to systematically review and update the literature on rituximab in lymphoma and CLL, and provide evidence-based consensus guidelines for its rational use. Validated methodology from the Cancer Care Ontario Program in Evidence-based Care was used. A comprehensive literature search was completed by a methodologist from the Hematology Disease Site Group of Cancer Care Ontario...
October 13, 2016: Clinical Oncology: a Journal of the Royal College of Radiologists
Yosra Ben-Fadhel, Sabrina Saltaji, Mohamed Ali Khlifi, Stephane Salmieri, Khanh Dang Vu, Monique Lacroix
The antimicrobial activity of essential oils (EOs), organic acid (OA) salts and natamycin, a natural antifungal produced during fermentation by the bacterium Streptomyces natalensis, was assessed against four pathogens (Escherichia coli O157:H7, Listeria monocytogenes, Salmonella Typhimurium and Aspergillus niger). The Minimum Inhibitory Concentration (MIC) of each antimicrobial (AM) was assessed to determine their efficiency on tested microbial species in order to select the most efficient. Then, the interactions between different antimicrobial compounds showing the lowest MIC were determined by the checkerboard method...
October 11, 2016: International Journal of Food Microbiology
J Caltagirone, A Dupont, M Afanetti, E Gondon, D Dupont
The vitamin B12 reserves of newborns are dependent on transplacental transfer and secondarily on food intake. This vitamin is involved in hematopoiesis and in neurological development. We report the case of a severe vitamin B12 deficiency in a 7-month-old infant. A neurological evaluation performed at 5 months of age for psychomotor regression found nonspecific cortical atrophy. The infant was hospitalized for impaired general condition and worsening of neurological symptoms. Examinations revealed bicytopenia with normocytic anemia (Hb: 7...
October 12, 2016: Archives de Pédiatrie: Organe Officiel de la Sociéte Française de Pédiatrie
Irene Fleur Kramer, Lex B Verdijk, Henrike M Hamer, Sjors Verlaan, Yvette C Luiking, Imre W K Kouw, Joan M Senden, Janneau van Kranenburg, Annemarie P Gijsen, Jörgen Bierau, Martijn Poeze, Luc J C van Loon
BACKGROUND: Studying the muscle protein synthetic response to food intake in elderly is important, as it aids the development of interventions to combat sarcopenia. Although sarcopenic elderly are the target group for many of these nutritional interventions, no studies have assessed basal or post-prandial muscle protein synthesis rates in this population. OBJECTIVE: To assess the basal and post-prandial muscle protein synthesis rates between healthy and sarcopenic older men...
September 29, 2016: Clinical Nutrition: Official Journal of the European Society of Parenteral and Enteral Nutrition
Denes Kaic Alves do Rosário, Yhan da Silva Mutz, Jaqueline Moreira Curtis Peixoto, Syllas Borburema Silva Oliveira, Raquel Vieira de Carvalho, Joel Camilo Souza Carneiro, Jackline Freitas Brilhante de São José, Patrícia Campos Bernardes
New sanitization methods have been evaluated to improve food safety and food quality and to replace chlorine compounds. However, these new methods can lead to physicochemical and sensory changes in fruits and vegetables. The present study evaluated the effects of acetic acid, peracetic acid, and sodium dodecylbenzenesulfonate isolated or combined with 5min of ultrasound treatment (40kHz, 500W) on strawberry quality over 9days of storage at 8°C. The strawberry natural contaminant microbiota (molds and yeasts, mesophilic aerobic and lactic acid bacteria), physicochemical quality (pH, total titratable acidity, total soluble solids, vitamin C, and color), sensory quality (triangle test) and inactivation of Salmonella enterica subsp...
October 12, 2016: International Journal of Food Microbiology
Jun-Hyung Tak, Murray B Isman
Although screening for new and reliable sources of botanical insecticides remains important, finding ways to improve the efficacy of those already in use through better understanding of their modes-of-action or metabolic pathways, or by improving formulations, deserves greater attention as the latter may present lesser regulation hurdles. Metabolic processing of citral (a combination of the stereoisomers geranial and neral), a main constituent of lemongrass (Cymbopogon citratus) essential oil has not been previously examined in insects...
October 2016: Pesticide Biochemistry and Physiology
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