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https://www.readbyqxmd.com/read/28806865/glucose-sensitive-holographic-bio-sensors-fundamentals-and-applications
#1
Marjan Heidari, Bahareh Dabirmanesh, Hossein Mahdavi, Khosro Khajeh
Nowadays sensors and especially biosensors play an important role in medical diagnosis and detection of food and environment contaminations. Biosensors’ facilities have been improved significantly by using technologies such as surface plasmon resonance, microfluidics, laser, and electrochemistry. These technologies are now available on chips in micro- and nano-scale and are capable of measuring the quantity of more than one analyte at once. One branch of these sensors is the holographic (bio)sensor. Reflection holographic sensors, which are optical devices fabricated based on Bragg’s law, can diffract light with specific wavelength as they absorb or release special ions or molecule depending on their polymer structure...
August 15, 2017: Iranian Biomedical Journal
https://www.readbyqxmd.com/read/28806549/liming-impacts-on-soils-crops-and-biodiversity-in-the-uk-a-review
#2
REVIEW
J E Holland, A E Bennett, A C Newton, P J White, B M McKenzie, T S George, R J Pakeman, J S Bailey, D A Fornara, R C Hayes
Fertile soil is fundamental to our ability to achieve food security, but problems with soil degradation (such as acidification) are exacerbated by poor management. Consequently, there is a need to better understand management approaches that deliver multiple ecosystem services from agricultural land. There is global interest in sustainable soil management including the re-evaluation of existing management practices. Liming is a long established practice to ameliorate acidic soils and many liming-induced changes are well understood...
August 11, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28803978/intraperitoneal-injection-of-d-serine-inhibits-high-fat-diet-intake-and-preference-in-male-mice
#3
Tsutomu Sasaki, Yasunobu Yasoshima, Sho Matsui, Hiromi Yokota-Hashimoto, Masaki Kobayashi, Tadahiro Kitamura
d-serine is a co-agonist of the N-methyl d-aspartate (NMDA) receptor, an important modulator of glutamatergic excitatory synaptic transmission. We previously reported that oral d-serine ingestion inhibited the intake of highly preferred food and promoted the intake of less preferred food in mice. Here, we analyzed the effects of intraperitoneal (IP) d-serine injections on feeding behavior in mice. We assessed the effects of d-serine during both the acquisition and maintenance of a preference for high-fat diets (HFDs)...
August 10, 2017: Appetite
https://www.readbyqxmd.com/read/28803764/effect-of-a-food-waste-disposer-policy-on-solid-waste-and-wastewater-management-with-economic-implications-of-environmental-externalities
#4
Amani Maalouf, Mutasem El-Fadel
In this study, the carbon footprint of introducing a food waste disposer (FWD) policy was examined in the context of its implications on solid waste and wastewater management with economic assessment of environmental externalities emphasizing potential carbon credit and increased sludge generation. For this purpose, a model adopting a life cycle inventory approach was developed to integrate solid waste and wastewater management processes under a single framework and test scenarios for a waste with high organic food content typical of developing economies...
August 10, 2017: Waste Management
https://www.readbyqxmd.com/read/28803008/two-step-large-volume-magnetic-separation-combined-with-pcr-assay-for-sensitive-detection-of-listeria-monocytogenes-in-pasteurized-milk
#5
Dan Luo, Xiaolin Huang, Yan Mao, Chaochao Chen, Fulai Li, Hengyi Xu, Yonghua Xiong
Immunomagnetic separation (IMS) is an effective tool for the preconcentration and purification of food-borne pathogens from complex food samples because of its high capture efficiency (CE). In conventional IMS, antibodies are usually conjugated on the surface of magnetic beads (MB); the random orientation and conformation changes of antibodies on the MB surface can decrease their bioactivity. Moreover, the Brownian motion of immobilized antibodies is weakened, thereby rendering their binding efficiency with bacteria lower than that of free antibodies...
August 9, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28802295/food-acceptance-and-anthropometry-in-relation-to-6-n-propylthiouracil-sensitivity-in-japanese-college-women
#6
Ayako Nagai, Masaru Kubota, Kanako Morinaga, Yukie Higashiyama
BACKGROUND AND OBJECTIVES: Differences in anthropometry and food acceptance among tasters and non-tasters of 6-n-propylthiouracil has been well studied in Western countries. However, reports on this issue from Asian countries are still limited. METHODS AND STUDY DESIGN: Healthy Japanese students attending Nara Women's University (n=153) were recruited and classified into 3 groups based on taste sensitivity to a 0.32 mM 6-npropylthiouracil solution as scored on a labeled magnitude scale...
2017: Asia Pacific Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/28802266/functional-analysis-of-genes-encoded-by-the-locus-of-heat-resistance-lhr-in-escherichia-coli
#7
Ryan Mercer, Oanh Nguyen, Qixing Ou, Lynn McMullen, Michael G Gänzle
The locus of heat resistance (LHR) is a 15 - 19 kb genomic island conferring exceptional heat resistance to organisms in the family Enterobacteriaceae including pathogenic strains of Salmonella enterica and Escherichia coli The complement of LHR-encoded genes that is necessary for heat resistance and the stress- or growth-phase induced expression of LHR-encoded genes are unknown. This study determined the contribution of the 7 LHR-encoded genes yfdX1GI, yfdX2, hdeDGI, orf11, trxGI, kefB, and psiEGI by comparison of the heat resistance of E...
August 11, 2017: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/28802077/helicobacter-pylori-and-its-secreted-immunomodulator-vaca-protect-against-anaphylaxis-in-experimental-models-of-food-allergy
#8
Andreas Kyburz, Sabine Urban, Aleksandra Altobelli, Stefan Floess, Jochen Huehn, Timothy L Cover, Anne Müller
BACKGROUND: Food allergy is an increasingly common health problem in Western populations. Epidemiological studies have suggested both positive and negative associations between food allergy and infection with the gastric bacterium Helicobacter pylori. OBJECTIVE: The objective of this work was to investigate whether experimental infection with H. pylori, or prophylactic treatment with H. pylori-derived immunomodulatory molecules, affects the onset and severity of food allergy, either positively or negatively...
August 12, 2017: Clinical and Experimental Allergy: Journal of the British Society for Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28802021/acute-exposure-to-an-environmentally-relevant-concentration-of-diclofenac-elicits-oxidative-stress-in-the-culturally-important-galaxiid-fish-galaxias-maculatus
#9
Nicole K Mcrae, Chris N Glover, S Rebekah Burket, Bryan W Brooks, Sally Gaw
Diclofenac is a non-steroidal anti-inflammatory drug of growing concern in aquatic environments worldwide, yet knowledge of its effects on aquatic biota are restricted to a few model species and mechanisms of impact. In the current study, diclofenac accumulation, its effects on metabolic rate, ionoregulation, and oxidative stress were examined at environmentally-relevant (0.17 μg L-1) and elevated (763 μg L-1) concentrations in a culturally and economically important galaxiid fish, inanga (Galaxias maculatus), from the Southern Hemisphere...
August 12, 2017: Environmental Toxicology and Chemistry
https://www.readbyqxmd.com/read/28801749/cancer-risk-assessment-of-polycyclic-aromatic-hydrocarbons-in-the-soils-and-sediments-of-india-a-meta-analysis
#10
Abhrajyoti Tarafdar, Alok Sinha
A carcinogenic risk assessment of polycyclic aromatic hydrocarbons in soils and sediments was conducted using the probabilistic approach from a national perspective. Published monitoring data of polycyclic aromatic hydrocarbons present in soils and sediments at different study points across India were collected and converted to their corresponding BaP equivalent concentrations. These BaP equivalent concentrations were used to evaluate comprehensive cancer risk for two different age groups. Monte Carlo simulation and sensitivity analysis were applied to quantify uncertainties of risk estimation...
August 11, 2017: Environmental Management
https://www.readbyqxmd.com/read/28801423/comparative-efficacy-and-acceptability-of-antidepressants-psychological-interventions-and-their-combination-for-depressive-disorder-in-children-and-adolescents-protocol-for-a-network-meta-analysis
#11
Xinyu Zhou, Andrea Cipriani, Yuqing Zhang, Pim Cuijpers, Sarah E Hetrick, John R Weisz, Juncai Pu, Cinzia Del Giovane, Toshiaki A Furukawa, Jürgen Barth, David Coghill, Stefan Leucht, Lining Yang, Arun V Ravindran, Peng Xie
INTRODUCTION: Depressive disorder is common in children and adolescents, with important consequences and serious impairments in terms of personal and social functioning. While both pharmacological and psychological interventions have been shown to be effective, there is still uncertainty about the balance between these and what treatment strategy should be preferred in clinical practice. Therefore, we aim to compare and rank in a network meta-analysis (NMA) the commonly used psychological, pharmacological and combined interventions for depressive disorder in children and adolescents...
August 11, 2017: BMJ Open
https://www.readbyqxmd.com/read/28800074/phellinus-linteus-grown-on-germinated-brown-rice-increases-cetuximab-sensitivity-of-kras-mutated-colon-cancer
#12
Hye-Jin Park, Jeong-Bin Park, Sang-Jae Lee, Minjung Song
Colon cancer is one of the most common types of cancer, and it has recently become a leading cause of death worldwide. Among colon cancers, the v-ki-ras2 Kirsten rat sarcoma viral oncogene homolog (KRAS)-mutated form is notorious for its non-druggable features. Cetuximab, a monoclonal antibody that binds to the epidermal growth factor receptor, has been introduced as an antitumor therapy; however, secondary resistance and side effects significantly limit its effective use in these cancers. In this study, we prepared Phellinuslinteus on germinated brown rice (PBR) extracts to increase the sensitivity of KRAS-mutated colon cancers to cetuximab...
August 11, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28799370/nucleation-in-food-colloids
#13
Malcolm J W Povey
Nucleation in food colloids has been studied in detail using ultrasound spectroscopy. Our data show that classical nucleation theory (CNT) remains a sound basis from which to understand nucleation in food colloids and analogous model systems using n-alkanes. Various interpretations and modifications of CNT are discussed with regard to their relevance to food colloids. Much of the evidence presented is based on the ultrasound velocity spectrometry measurements which has many advantages for the study of nucleating systems compared to light scattering and NMR due to its sensitivity at low solid contents and its ability to measure true solid contents in the nucleation and early crystal growth stages...
December 7, 2016: Journal of Chemical Physics
https://www.readbyqxmd.com/read/28798736/escherichia-coli-o157-h7-acid-sensitivity-correlates-with-flocculation-phenotype-during-nutrient-limitation
#14
Kathryn L Kay, Frederick Breidt, Pina M Fratamico, Gian M Baranzoni, Gwang-Hee Kim, Amy M Grunden, Deog-Hwan Oh
Shiga toxin producing Escherichia coli (STEC) strains vary in acid resistance; however, little is known about the underlying mechanisms that result in strain specific differences. Among 25 STEC O157:H7 strains tested, 7 strains flocculated when grown statically for 18 h in minimal salts medium at 37°C, while 18 strains did not. Interestingly, the flocculation phenotype (cells came out of suspension) was found to correlate with degree of acid sensitivity in an assay with 400 mM acetic acid solution at pH 3...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28797890/developing-and-implementing-a-food-insecurity-screening-initiative-for-patients-living-with-diabetes
#15
Brittany Thomas, Sandra Fitzpatrick, Souraya Sidani, Enza Gucciardi
OBJECTIVES: Routine food insecurity screening is recommended in diabetes care to inform more tailored interventions that better support diabetes self-management among food-insecure patients. This pilot study explored the acceptability and feasibility of a food insecurity screening initiative within a diabetes care setting in Toronto. METHODS: A systematic literature review informed the development of a food insecurity screening initiative to help health-care providers tailor diabetes management plans and better support food-insecure patients with type 2 diabetes...
August 7, 2017: Canadian Journal of Diabetes
https://www.readbyqxmd.com/read/28797702/unobtrusive-electromyography-based-eating-detection-in-daily-life-a-new-tool-to-address-underreporting
#16
J Blechert, M Liedlgruber, A Lender, J Reichenberger, F H Wilhelm
Research on eating behavior is limited by an overreliance on self-report. It is well known that actual food intake is frequently underreported, and it is likely that this problem is overrepresented in vulnerable populations. The present research tested a chewing detection method that could assist self-report methods. A trained sample of 15 participants (usable data of 14 participants) kept detailed eating records during one day and one night while carrying a recording device. Signals recorded from electromyography sensors unobtrusively placed behind the right ear were used to develop a chewing detection algorithm...
August 7, 2017: Appetite
https://www.readbyqxmd.com/read/28796984/allergens-and-food-additives-including-potentially-harmful-ones-present-in-food-products-that-are-preferred-by-children-and-adolescents
#17
Sandra Budrewicz, Marcin Banaszczak, Jakub Piotrowski, Maja Czerwińska, Ewa Stachowska
INTRODUCTION: The proper development of a child is linked with proper nutrition, including nutritional habits which are formed from childhood. THE AIM OF THE STUDY: The aim of the study was to establish a list of the most popular food products among children and to develop a register of potentially dangerous substances on a Facebook website. MATERIALS AND METHODS: A website was created on Facebook. The participants provided lists of favorite dishes or products...
2017: Developmental Period Medicine
https://www.readbyqxmd.com/read/28796821/legacy-of-historic-ozone-exposure-on-plant-community-and-food-web-structure
#18
M Alejandra Martínez-Ghersa, Analía I Menéndez, Pedro E Gundel, Ana M Folcia, Ana M Romero, Jennifer B Landesmann, Laura Ventura, Claudio M Ghersa
Information on whole community responses is needed to predict direction and magnitude of changes in plant and animal abundance under global changes. This study quantifies the effect of past ozone exposure on a weed community structure and arthropod colonization. We used the soil seed bank resulting from a long-term ozone exposure to reestablish the plant community under a new low-pollution environment. Two separate experiments using the same original soil seed bank were conducted. Plant and arthropod richness and species abundance was assessed during two years...
2017: PloS One
https://www.readbyqxmd.com/read/28796370/a-highly-sensitive-bimodal-detection-of-amine-vapours-based-on-aggregation-induced-emission-of-1-2-dihydroquinoxaline-derivatives
#19
Parvej Alam, Nelson Lik Ching Leung, Huifang Su, Zijie Qiu, Ryan T K Kwok, Jacky W Y Lam, Ben Zhong Tang
The detection of food spoilage is a major concern in food safety as large amounts of food are transported globally. Direct analysis of food samples is often time-consuming and requires expensive analytical instrumentation. A much simpler and more cost-effective method for monitoring food fermentation is to detect biogenic amines generated as a by-product during food decomposition. In this work, a series of 1,2-dihydroquinoxaline derivatives (DQs) with aggregation-induced emission (AIE) characteristics were synthesized and their protonated forms, i...
August 10, 2017: Chemistry: a European Journal
https://www.readbyqxmd.com/read/28796321/low-temperature-blanching-as-a-tool-to-modulate-the-structure-of-pectin-in-blueberry-purees
#20
Laura M Chevalier, Laurie-Eve Rioux, Paul Angers, Sylvie L Turgeon
Blueberry composition was characterized for 6 cultivars. It contains a good amount of dietary fiber (10% to 20%) and pectin (4% to 7%) whose degree of methylation (DM) is sensitive to food processing. A low temperature blanching (LTB: 60 °C/1 h) was applied on blueberry purees to decrease pectin DM, in order to modulate puree properties and functionalities (that is, viscosity and stability), and to enhance pectin affinity toward other components within food matrices. Fiber content, viscosity, pectin solubility, DM, and monosaccharide composition were determined for both pasteurized, and LTB+pasteurized blueberry purees...
August 10, 2017: Journal of Food Science
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