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https://www.readbyqxmd.com/read/28080039/using-standing-gold-nanorod-arrays-as-surface-enhanced-raman-spectroscopy-sers-substrates-for-detection-of-carbaryl-residues-in-fruit-juice-and-milk
#1
Fouad K Alsammarraie, Mengshi Lin
In recent years, there have been increasing concerns about pesticide residues in various foods. On the other hand, there is growing attention in utilizing novel nanomaterials as highly sensitive, low-cost, and reproducible substrates for surface-enhanced Raman spectroscopy (SERS) applications. The objective of this study was to develop a SERS method for the rapid detection of pesticides that were extracted from different types of food samples (fruit juice and milk). A new SERS substrate was prepared by assembling gold nanorods into standing arrays on a gold-coated silicon slide...
January 12, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28078412/simultaneous-determination-of-four-food-allergens-using-compact-disc-immunoassaying-technology
#2
Ahmed Ali Badran, Sergi Morais, Ángel Maquieira
A multiplex competitive microimmunoassay for the simultaneous determination of gliadin, casein, β-lactoglobulin, and ovalbumin is presented. The assay in microarray format is performed on a DVD where the allergens are physisorbed on the polycarbonate surface of the disc. The immunointeraction is detected using a mixture of specific gold-labeled antibodies and the signal amplified with the silver enhancement method. The optical density of the precipitate, read by a DVD drive, is related to the concentration of the four allergens in sample...
January 11, 2017: Analytical and Bioanalytical Chemistry
https://www.readbyqxmd.com/read/28078255/quality-characteristics-and-antioxidant-activity-of-yogurt-supplemented-with-aronia-aronia-melanocarpa-juice
#3
Linh Nguyen, Eun-Sun Hwang
We investigated the quality characteristics and antioxidant activities of yogurt supplemented with 1%, 2%, and 3% aronia juice and fermented for 24 h at 37°C. The total acidity increased with increasing levels of aronia juice and incubation time. Lightness and yellowness of the yogurt decreased, but redness increased, with increasing aronia juice content and incubation time. The number of lactic acid bacteria (LAB) increased with increased incubation time, and yogurt containing 2% and 3% aronia juice showed higher LAB counts than 1% aroinia juice-supplemented yogurt...
December 2016: Preventive Nutrition and Food Science
https://www.readbyqxmd.com/read/28074603/supplementing-diet-with-manitoba-lingonberry-juice-reduces-kidney-ischemia-reperfusion-injury
#4
Cara K Isaak, Pengqi Wang, Suvira Prashar, Karmin O, Daniel C W Brown, Samir C Debnath, Yaw L Siow
BACKGROUND: Lingonberry (Vaccinium vitis-idaea L.) contains high levels of anthocyanins which are bioavailable in the kidney and may be protective against ischemia-reperfusion (IR)-induced acute kidney injury. This study investigated the effect of lingonberry juice on IR-induced stress-activated signaling pathway and inflammatory response in the kidney. RESULTS: Sprague-Dawley rats subjected to kidney IR had significantly impaired kidney function, with increased activation of the JNK signaling pathway and increased inflammatory response, measured using a multiplex panel containing an extensive array of inflammatory biomarkers...
January 11, 2017: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/28073617/district-policies-and-practices-vary-in-their-association-with-adolescents-consumption-of-milk-and-100-fruit-juice
#5
Sarah A Sliwa, Gabrielle F Miller, Nancy D Brener, Sohyun Park, Caitlin L Merlo
PURPOSE: Researchers previously examined the relationship between school beverage policies and sugar-sweetened beverage (SSB) consumption. This study addressed a research gap by examining cross-sectional associations between district-level policies and practices and U.S. high school students' consumption of milk and 100% fruit juice. METHODS: Data from the 2012 School Health Policies and Practices Study and 2013 Youth Risk Behavior Surveillance System were linked for 12 large urban school districts...
January 7, 2017: Journal of Adolescent Health: Official Publication of the Society for Adolescent Medicine
https://www.readbyqxmd.com/read/28073080/impact-of-environmental-factors-on-the-culturability-and-viability-of-listeria-monocytogenes-under-conditions-encountered-in-food-processing-plants
#6
Anaïs Overney, Joséphine Jacques-André-Coquin, Patricia Ng, Brigitte Carpentier, Laurent Guillier, Olivier Firmesse
The ability of Listeria monocytogenes to adhere to and persist on surfaces for months or even years may be responsible for its transmission from contaminated surfaces to food products. Hence the necessity to find effective means to prevent the establishment of L. monocytogenes in food processing environments. The aim of this study was to assess, through a fractional experimental design, the environmental factors that could affect the survival of L. monocytogenes cells on surfaces to thereby prevent the persistence of this pathogen in conditions mimicking those encountered in food processing plants: culture with smoked salmon juice or meat exudate, use of two materials with different hygiene status, biofilm of L...
December 21, 2016: International Journal of Food Microbiology
https://www.readbyqxmd.com/read/28072918/production-of-staphylococcal-enterotoxins-d-and-r-in-milk-and-meat-juice-by-staphylococcus-aureus-strains
#7
Justyna Schubert, Magdalena Podkowik, Jarosław Bystroń, Jacek Bania
Seventeen Staphylococcus aureus strains were tested for production of staphylococcal enterotoxin D (SED) and staphylococcal enterotoxin R (SER) in milk and meat juice. SED was secreted in milk by 12 S. aureus strains at 6-54 ng/mL at 24 h and 9-98 ng/mL at 48 h. Another five strains secreted SED at 0.9-1.9 μg/mL at 24 h and at 1.2-2.4 μg/mL at 48 h. Strains producing high levels of SED in milk secreted 77-666 μg/mL of SED in meat juice at 24 h and 132-1225 μg/mL at 48 h. Strains producing lower amounts of SED in milk secreted 228-1109 ng/mL of SED at 24 h and 377-1782 ng/mL at 48 h in meat juice...
January 10, 2017: Foodborne Pathogens and Disease
https://www.readbyqxmd.com/read/28071802/essential-oils-against-pathogen-and-spoilage-microorganisms-of-fruit-juices-use-of-versatile-antimicrobial-delivery-systems
#8
Valentina Trinetta, Mark T Morgan, John N Coupland, Umut Yucel
Essential oils (EO) are increasingly used as natural antimicrobial compounds, however the effect of delivery system to enhance their antimicrobial activity has not been widely studied. Limonene (0 to 10 μL/mL) was added to microbial suspensions (∼10(5) CFU/mL) of selected foodborne pathogens (Listeria monocytogenes Scott A, Salmonella enterica Typhimurium, Escherichia coli and Staphylococcus aureus), and spoilage microorganisms (Lactobacillus plantarum, Saccharomyces cerevisiae, and Candida albicans). S...
January 10, 2017: Journal of Food Science
https://www.readbyqxmd.com/read/28071029/assessment-of-colour-changes-during-storage-of-elderberry-juice-concentrate-solutions-using-the-optimization-method
#9
Dorota Walkowiak-Tomczak, Janusz Czapski, Karolina Młynarczyk
BACKGROUND: Elderberries are a source of dietary supplements and bioactive compounds, such as anthocyanins. These dyes are used in food technology. The aim of the study was to assess the changes in colour parameters, anthocyanin contents and sensory attributes in solutions of elderberry juice concentrates during storage in a model system and to determine predictability of sensory attributes of colour in solutions based on regression equations using the response surface methodology. METHODS: The experiment was carried out according to the 3-level factorial design for three factors...
July 2016: Acta Scientiarum Polonorum. Technologia Alimentaria
https://www.readbyqxmd.com/read/28069189/ultrasound-treated-potato-peel-and-sweet-lime-pomace-based-biopolymer-film-development
#10
Purba Prasad Borah, Pulak Das, Laxmikant S Badwaik
Treatment and management of food processing waste is a major challenge for food industry. Potato processing industry generates tremendous amount of peel and consider it as zero valued waste. Again, pomace generated after juice extraction from sweet lime pulp is considered as waste and not properly utilized. Whereas these waste could be utilized for the development of biodegradable packaging film to overcome environmental issues. Composite films were prepared with varying proportion of potato peel powder (PP) and sweet lime pomace (SLP) in the ratio of 0:1(A), 0...
May 2017: Ultrasonics Sonochemistry
https://www.readbyqxmd.com/read/28067808/effects-of-beetroot-juice-supplementation-on-cardiorespiratory-endurance-in-athletes-a-systematic-review
#11
REVIEW
Raúl Domínguez, Eduardo Cuenca, José Luis Maté-Muñoz, Pablo García-Fernández, Noemí Serra-Paya, María Carmen Lozano Estevan, Pablo Veiga Herreros, Manuel Vicente Garnacho-Castaño
Athletes use nutritional supplementation to enhance the effects of training and achieve improvements in their athletic performance. Beetroot juice increases levels of nitric oxide (NO), which serves multiple functions related to increased blood flow, gas exchange, mitochondrial biogenesis and efficiency, and strengthening of muscle contraction. These biomarker improvements indicate that supplementation with beetroot juice could have ergogenic effects on cardiorespiratory endurance that would benefit athletic performance...
January 6, 2017: Nutrients
https://www.readbyqxmd.com/read/28065543/mitigating-dietary-arsenic-exposure-current-status-in-the-united-states-and-recommendations-for-an-improved-path-forward
#12
Keeve E Nachman, Gary L Ginsberg, Mark D Miller, Carolyn J Murray, Anne E Nigra, Claire B Pendergrast
Inorganic arsenic (iAs) is a well-characterized carcinogen, and recent epidemiologic studies have linked chronic exposures to non-cancer health outcomes, including cardiovascular disease, diabetes, skin lesions and respiratory disorders. Greater vulnerability has been demonstrated with early life exposure for health effects including lung and bladder cancer, immunotoxicity and neurodevelopment. Despite its well-known toxicity, there are important gaps in the regulatory oversight of iAs in food and in risk communication...
January 5, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28065188/flavanone-rich-citrus-beverages-counteract-the-transient-decline-in-postprandial-endothelial-function-in-humans-a-randomised-controlled-double-masked-cross-over-intervention-study
#13
Catarina Rendeiro, Honglin Dong, Caroline Saunders, Laura Harkness, Melvin Blaze, Yanpeng Hou, Ronald L Belanger, Giulia Corona, Julie A Lovegrove, Jeremy P E Spencer
Specific flavonoid-rich foods/beverages are reported to exert positive effects on vascular function; however, data relating to effects in the postprandial state are limited. The present study investigated the postprandial, time-dependent (0-7 h) impact of citrus flavanone intake on vascular function. An acute, randomised, controlled, double-masked, cross-over intervention study was conducted by including middle-aged healthy men (30-65 years, n 28) to assess the impact of flavanone intake (orange juice: 128·9 mg; flavanone-rich orange juice: 272·1 mg; homogenised whole orange: 452·8 mg; isoenergetic control: 0 mg flavanones) on postprandial (double meal delivering a total of 81 g of fat) endothelial function...
January 9, 2017: British Journal of Nutrition
https://www.readbyqxmd.com/read/28065181/effects-of-a-healthier-snack-on-snacking-habits-and-glycated-hb-hba1c-a-6-week-intervention-study
#14
Mary R Yan, Andrew Parsons, Gillian A Whalley, Elaine C Rush
Dietary behaviour modification may change eating habits and reduce the impact of poor nutrition. This study aimed to evaluate the effects of daily consumption of a healthier snack bar on snacking habits and glycated Hb (HbA1c) within a 6-week intervention. In all, twenty-eight participants were randomly allocated to two groups to either consume the bars as the main snack for 6 weeks (n 14) or receipt of the bars was delayed for 6 weeks (n 14) following a stepped-wedge design. All participants had HbA1c concentrations measured at weeks -1, 0, 4, 6, 10 and 12...
January 9, 2017: British Journal of Nutrition
https://www.readbyqxmd.com/read/28064559/studies-on-the-antidiabetic-activities-of-momordica-charantia-fruit-juice-in-streptozotocin-induced-diabetic-rats
#15
Mona F Mahmoud, Fatma El Zahraa Z El Ashry, Nabila N El Maraghy, Ahmed Fahmy
CONTEXT: Momordica charantia Linn (Cucurbitaceae) (MC) is used in folk medicine to treat various diseases including diabetes mellitus. OBJECTIVE: This study investigates the antidiabetic activities of Momordica charantia (bitter gourd) on streptozotocin-induced type 2 diabetes mellitus in rats. MATERIALS AND METHODS: Male Wister rats were randomly assigned to 4 groups. Group I, Normal control; Group II, STZ diabetic; Group III and IV, Momordica charantia fruit juice was orally administered to diabetic rats (10 mL/kg/day either as prophylaxis for 14 days before induction of diabetes then 21 days treatment, or as treatment given for 21 days after induction of diabetes)...
December 2017: Pharmaceutical Biology
https://www.readbyqxmd.com/read/28064058/pectin-zinc-chitosan-polyethylene-glycol-colloidal-nano-suspension-as-a-food-grade-carrier-for-colon-targeted-delivery-of-resveratrol
#16
Hashem Andishmand, Mahnaz Tabibiazar, Mohammad Amin Mohammadifar, Hamed Hamishehkar
The aim of the present study was to develop chitosan-zinc-pectinate-polyethylene glycol (PEG) nanoparticles (NPs) for colon-targeted delivery of resveratrol. The effects of pectin:ZnCl2:chitosan (PZnC) % w/v, pH and ionic strength of media, and addition of PEG on the colloidal stability and release behavior of resveratrol from NPs were examined by Zeta potential, particle size analyzer, scanning electron microscopy (SEM), and Fourier transform-infrared (FTIR) methods. The particle size and Zeta potential of PZnC NPs in the ratio of 10:1:3% w/v were 399±18nm and +25±1mV, respectively...
January 5, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28063146/pretreatment-optimization-of-the-biomass-of-microcystis-aeruginosa-for-efficient-bioethanol-production
#17
Muhammad Imran Khan, Moon Geon Lee, Jin Hyuk Shin, Jong Deog Kim
Microalgae are considered to be the future promising sources of biofuels and bio products. The algal carbohydrates can be fermented to bioethanol after pretreatment process. Efficient pretreatment of the biomass is one of the major requirements for commercialization of the algal based biofuels. In present study the microalga, M. aeruginsa was used for pretreatment optimization and bioethanol production. Treatment of algal biomass with CaO before acid and/or enzymatic hydrolysis enhanced the degradation of algal cells...
December 2017: AMB Express
https://www.readbyqxmd.com/read/28056940/a-large-and-persistent-outbreak-of-typhoid-fever-caused-by-consuming-contaminated-water-and-street-vended-beverages-kampala-uganda-january-june-2015
#18
Steven Ndugwa Kabwama, Lilian Bulage, Fred Nsubuga, Gerald Pande, David Were Oguttu, Richardson Mafigiri, Christine Kihembo, Benon Kwesiga, Ben Masiira, Allen Eva Okullo, Henry Kajumbula, Joseph Matovu, Issa Makumbi, Milton Wetaka, Sam Kasozi, Simon Kyazze, Melissa Dahlke, Peter Hughes, Juliet Nsimire Sendagala, Monica Musenero, Immaculate Nabukenya, Vincent R Hill, Eric Mintz, Janell Routh, Gerardo Gómez, Amelia Bicknese, Bao-Ping Zhu
BACKGROUND: On 6 February 2015, Kampala city authorities alerted the Ugandan Ministry of Health of a "strange disease" that killed one person and sickened dozens. We conducted an epidemiologic investigation to identify the nature of the disease, mode of transmission, and risk factors to inform timely and effective control measures. METHODS: We defined a suspected case as onset of fever (≥37.5 °C) for more than 3 days with abdominal pain, headache, negative malaria test or failed anti-malaria treatment, and at least 2 of the following: diarrhea, nausea or vomiting, constipation, fatigue...
January 5, 2017: BMC Public Health
https://www.readbyqxmd.com/read/28056918/fermented-blueberry-juice-extract-and-its-specific-fractions-have-an-anti-adipogenic-effect-in-3%C3%A2-t3-l1-cells
#19
Mayra L Sánchez-Villavicencio, Melinda Vinqvist-Tymchuk, Wilhelmina Kalt, Chantal Matar, Francisco J Alarcón Aguilar, Maria Del Carmen Escobar Villanueva, Pierre S Haddad
BACKGROUND: Obesity and Type 2 diabetes have reached epidemic status worldwide. Wild lowbush blueberry (Vaccinium angustifolium Aiton) is a plant of the North American Aboriginal traditional pharmacopeia with antidiabetic potential, especially when it is fermented with Serratia vaccinii. METHODS: A phytochemical fractionation scheme was used to identify potential bioactive compounds as confirmed by HPLC retention times and UV-Vis spectra. 3 T3-L1 cells were differentiated for 7 days with either Normal Blueberry Extract (NBE), Fermented Blueberry Extract (FBE/F1), seven fractions and four pure compounds...
January 6, 2017: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/28055127/lippia-origanoides-essential-oil-an-efficient-and-safe-alternative-to-preserve-food-cosmetic-and-pharmaceutical-products
#20
Camila Hernandes, Edieidia Souza Pina, Silvia H Taleb-Contini, Bianca Waléria Bertoni, Ivanice Maria Cestari, Lívia Greghi Espanha, Eliana A Varanda, Katyana França Bonini Camilo, Edson Zangiacome Martinez, Suzelei de Castro França, Ana Maria Soares Pereira
AIM: The aim of this work was to evaluated the efficacy and safety of Lippia origanoides essential oil as a preservative in industrial products. METHODS AND RESULTS: The composition, antimicrobial activity, mutagenic and toxic potential of L. origanoides was determined. Then the effect of essential oil as preservative in food, cosmetics and pharmaceutical products was evaluated. The essential oil of L. origanoides consisted mainly of oxygenated monoterpenes (38...
January 5, 2017: Journal of Applied Microbiology
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