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https://www.readbyqxmd.com/read/28746725/an-acceptability-trial-of-desiccated-beef-liver-and-meat-powder-as-potential-fortifiers-of-complementary-diets-of-young-children-in-indonesia
#1
Lisa M Duizer, Aly Diana, Hilmi S Rathomi, Dimas E Luftimas, Sofa Rahmannia, Widya Santi, Gaga Irawan Nugraha, Jill J Haszard, Rosalind S Gibson, Lisa A Houghton
The addition of desiccated beef liver to infant and young child complementary foods can be used to overcome nutrient deficits, however its acceptability is unknown. We conducted a series of studies to test the acceptability of complementary foods fortified with either powdered beef liver, beef meat, beef liver + meat or placebo among 96 Indonesian children aged 12 to 23 mo. This was achieved by determining liking of a single test food with added study powder, followed by a 2-wk home trial and focus group discussions to assess liking during repeated consumption of the study powders added to daily meals...
July 26, 2017: Journal of Food Science
https://www.readbyqxmd.com/read/28745638/localization-of-odorant-receptor-genes-in-locust-antennae-by-rna-in-situ-hybridization
#2
Xiao Xu, Yinwei You, Long Zhang
Insects have evolved sophisticated olfactory reception systems to sense exogenous chemical signals. These chemical signals are transduced by Olfactory Receptor Neurons (ORNs) housed in hair-like structures, called chemosensilla, of the antennae. On the ORNs' membranes, Odorant Receptors (ORs) are believed to be involved in odor coding. Thus, being able to identify genes localized to the ORNs is necessary to recognize OR genes, and provides a fundamental basis for further functional in situ studies. The RNA expression levels of specific ORs in insect antennae are very low, and preserving insect tissue for histology is challenging...
July 13, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28744789/decreased-olfactory-bulb-volumes-in-patients-with-fibromyalgia-syndrome
#3
Selçuk Sayılır, Neşat Çullu
Among the other symptoms, impaired olfactory function such as odor identification, threshold, and discrimination have been reported in patients with fibromyalgia syndrome (FMS). To investigate olfactory bulb (OB) volumes in FMS, by using magnetic resonance imaging (MRI), and to make reasonable suggestions are the goals of the present study. The study included 62 individuals as the FMS group (n = 30) and the control group (n = 32). MRI examinations were performed by a 1.5-T scanner and a standard head coil was used for the images...
July 26, 2017: Clinical Rheumatology
https://www.readbyqxmd.com/read/28744761/olfactory-processing-in-male-children-with-autism-atypical-odor-threshold-and-identification
#4
Filippo Muratori, Alessandro Tonacci, Lucia Billeci, Tiziana Catalucci, Roberta Igliozzi, Sara Calderoni, Antonio Narzisi
Sensory issues are of great interest in ASD diagnosis. However, their investigation is mainly based on external observation (parent reports), with methodological limitations. Unobtrusive olfactory assessment allows studying autism neurosensoriality. Here, 20 male children with high-functioning ASD and 20 matched controls were administered a complete olfactory test battery, assessing olfactory threshold, identification and discrimination. ASD children show lower sensitivity (p = 0.041), lower identification (p = 0...
July 25, 2017: Journal of Autism and Developmental Disorders
https://www.readbyqxmd.com/read/28744676/anti-oviposition-activities-of-used-sock-media-against-a-dengue-vector-prospects-of-eco-friendly-control-and-solutions-to-pollution
#5
Hamady Dieng, Tomomitsu Satho, Fatimah Abang, Fumio Miake, Idris A Ghani, Nurshilawati A Latip, Nur Ezzati Aliasan, Sabina Noor, Abu Hassan Ahmad, Hamdan Ahmad, Wan Fatma Zuharah, Abdul Hafiz Ab Majid, Cirilo Nolasco-Hipolito, Ronald Enrique Morales Vargas, Noppawan Phumala Morales, Gabriel Tonga Noweg
Yearly, huge amounts of sock refuse are discarded into the environment. Socks contain many molecules, and worn ones, which are rich in smell-causing bacteria, have a strong influence on animals' behaviors. But the impacts of sock odor on the oviposition behavior of dengue vectors are unknown. We assessed whether Aedes albopictus changes its oviposition activity in response to the presence of used socks extract (USEx) in potential breeding grounds, using choice and no-choice bioassays (NCB). When furnished even chances to oviposit in two sites holding USEx and two others containing water (control), Ae...
July 25, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28743111/sleep-and-olfaction-among-older-adults
#6
V Eloesa McSorley, Jayant Pinto, L Philip Schumm, Kristen Wroblewski, David Kern, Martha McClintock, Diane S Lauderdale
BACKGROUND: Sleep and olfaction are both critical physiological processes that tend to worsen with age. Decline in olfaction can be an early indicator of neurodegenerative diseases, whereas poor sleep quality is associated with reduced physical and mental health. Given associations with aging-related health declines, we explored whether variations in sleep were associated with olfactory function among older adults. METHODS: We assessed the relationship between sleep characteristics and olfaction among 354 community-dwelling older adults...
July 26, 2017: Neuroepidemiology
https://www.readbyqxmd.com/read/28740857/h2s-loss-through-nalophan%C3%A2-bags-contributions-of-adsorption-and-diffusion
#7
Lidia Eusebio, Laura Capelli, Selena Sironi
Hydrogen-sulfide (H2S) is a molecule of small dimensions typically present in the odor emissions from different plants. The European Standard EN 13725:2003 set a maximum storage time allowed of 30 hours, during which the sampling bag has to maintain the mixture of odorants with minimal changes. This study investigates the H2S losses through Nalophan bags and it shows that nonnegligible losses of H2S can be observed. The percent H2S loss after 30 hrs with respect to the initial concentration is equal to 33%  ± 3% at a relative humidity of 20% and equal to 22%  ± 1% at a relative humidity of 60%...
2017: TheScientificWorldJournal
https://www.readbyqxmd.com/read/28740371/influence-of-environmental-factors-on-food-intake-among-nursing-home-residents-a-survey-combined-with-a-video-approach
#8
Fanny Buckinx, Jean-Yves Reginster, Alison Morelle, Nicolas Paquot, Nicole Labeye, Médéa Locquet, Stéphane Adam, Olivier Bruyère
BACKGROUND: In addition to the well-known physiological factors, dietary behavior that affects health seems to be influenced by a wide variety of environmental factors. The aim of this study was to assess, by means of an original video approach, the influence of the environment on food intake in nursing homes. METHODS: The perception of the environment during meals in nursing homes was evaluated by residents and by two groups of volunteers who either work in the field of geriatrics, or who do not work in the field of geriatrics...
2017: Clinical Interventions in Aging
https://www.readbyqxmd.com/read/28740104/host-seeking-parasitic-nematodes-use-specific-odors-to-assess-host-resources
#9
Tiffany Baiocchi, Grant Lee, Dong-Hwan Choe, Adler R Dillman
Entomopathogenic nematodes (EPNs) are insect parasites used as biological control agents. Free-living infective juveniles (IJs) of EPNs employ host-seeking behaviors to locate suitable hosts for infection. We found that EPNs can differentiate between naïve and infected hosts, and that host attractiveness changes over time in a species-specific manner. We used solid-phase microextraction and gas chromatography/mass spectrometry to identify volatile chemical cues that may relay information about a potential host's infection status and resource availability...
July 24, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28739522/bimodal-odor-processing-with-a-trigeminal-component-at-sub-and-suprathreshold-levels
#10
Robert Pellegrino, Edda Drechsler, Cornelia Hummel, Johnathan Warr, Thomas Hummel
Odors are typically bimodal in nature, interacting with the olfactory and trigeminal systems. The trigeminal component may be noticed (e.g. menthol) or perceptually ignored, leading to different neural substrates being recruited during odor encoding. Therefore, the current study was designed to explore the perceptual and central-nervous activations in response to pleasant bimodal odors using functional magnetic resonance imaging (fMRI). In this study, healthy subjects were exposed to odorants alone (unimodal) or with a "cooling" trigeminal component (bimodal) at sub- and suprathreshold concentrations with a portable olfactometer in a 3 T fMRI scanner...
July 21, 2017: Neuroscience
https://www.readbyqxmd.com/read/28738652/volatile-composition-of-merlot-red-wine-and-its-contribution-to-the-aroma-optimization-and-validation-of-analytical-method
#11
Stefany Grützmann Arcari, Vinicius Caliari, Marla Sganzerla, Helena Teixeira Godoy
A methodology for the determination of volatile compounds in red wine using headspace solid phase microextraction (HS-SPME) combined with gas chromatography-ion trap/ mass spectrometry (GC-IT/MS) and flame ionization detector (GC -FID) was developed, validated and applied to a sample of Brazilian red wine. The optimization strategy was conducted using the Plackett-Burman design for variable selection and central composite rotational design (CCRD). The response surface methodology showed that the performance of the extraction of the volatile compounds using divinylbenzene/carboxen/polydimethylsiloxane (DVB/CAR/PDMS) fiber is improved with no sample dilution, the addition of 30% NaCl, applying an extraction temperature of 56°C and extraction time of 55min...
November 1, 2017: Talanta
https://www.readbyqxmd.com/read/28737277/investigation-of-sensory-profiles-and-hedonic-drivers-of-emerging-aquaculture-fish-species
#12
Niki Alexi, Derek V Byrne, Evagelia Nanou, Kriton Grigorakis
BACKGROUND: The aquaculture sector needs to increase the diversity in fish species and their processed products to cover rising consumer demands. Candidates for this diversification have been identified to be meagre, Greater amberjack, pikeperch, and wreckfish. Yet, scientific knowledge on their sensory profiles and consumer hedonic responses is scarce. The aim of the current study was to investigate these aspects, since they are essential for product development and market targeting...
July 24, 2017: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/28736530/identification-and-expression-profiling-of-chemosensory-genes-in-dendrolimus-punctatus-walker
#13
Su-Fang Zhang, Hui-Hui Liu, Xiang-Bo Kong, Hong-Bin Wang, Fu Liu, Zhen Zhang
Dendrolimus punctatus Walker is a serious pest affecting conifers in southern China. As extensive pesticide spraying is currently required to control D. punctatus, new control strategies are urgently needed. Chemosensory genes represent potential molecular targets for development of alternative pest control strategies, and the expression characteristics of these genes provide an indication of their function. To date, little information is available regarding chemosensory genes in D. punctatus or their expression profiles at different development stages and in various tissues...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28736050/effects-of-aeration-and-leachate-recirculation-on-methyl-mercaptan-emissions-from-landfill
#14
Siyuan Zhang, Yuyang Long, Yuan Fang, Yao Du, Weijia Liu, Dongsheng Shen
The issue of odorous volatile organic sulfur compound methyl mercaptan (MM) released from landfill sites cannot be ignored for its extremely low odor threshold and high toxicity. In this study, we focused on the formation and emission of MM in four lab-scaled simulated landfill reactors running in different operation modes, namely, R1 and R2, without leachate recirculation, running under anaerobic and semi-aerobic atmosphere, R3 and R4, with leachate recirculation, running under anaerobic and semi-aerobic atmosphere, respectively...
July 20, 2017: Waste Management
https://www.readbyqxmd.com/read/28733965/molecular-communication-over-gas-stream-channels-using-portable-mass-spectrometry
#15
Stamatios Giannoukos, Alan Marshall, Stephen Taylor, Jeremy Smith
The synthetic generation/coding and transmission of olfactory information over a gas stream or an odor network is a new and unexplored field. Application areas vary from the entertainment or advertisement industry to security and telemedicine. However, current technological limitations frustrate the accurate reproduction of decoded and transmitted olfactory data. This study describes the development, testing, and characterization of a novel odor emitter (OE) that is used to investigate the generation-encoding of gaseous standards with odorous characteristics with a regulatable way, for scent transmission purposes...
July 21, 2017: Journal of the American Society for Mass Spectrometry
https://www.readbyqxmd.com/read/28732030/identification-of-odorant-binding-proteins-and-chemosensory-proteins-in-microplitis-mediator-as-well-as-functional-characterization-of-chemosensory-protein-3
#16
Yong Peng, Shan-Ning Wang, Ke-Ming Li, Jing-Tao Liu, Yao Zheng, Shuang Shan, Ye-Qing Yang, Rui-Jun Li, Yong-Jun Zhang, Yu-Yuan Guo
Odorant binding proteins (OBPs) and chemosensory proteins (CSPs) play important roles in transporting semiochemicals through the sensillar lymph to olfactory receptors in insect antennae. In the present study, twenty OBPs and three CSPs were identified from the antennal transcriptome of Microplitis mediator. Ten OBPs (MmedOBP11-20) and two CSPs (MmedCSP2-3) were newly identified. The expression patterns of these new genes in olfactory and non-olfactory tissues were investigated by real-time quantitative PCR (qPCR) measurement...
2017: PloS One
https://www.readbyqxmd.com/read/28730637/identification-and-functional-characterization-of-an-odorant-receptor-in-pea-aphid-acyrthosiphon-pisum
#17
Rui-Bin Zhang, Yang Liu, Shan-Chun Yan, Gui-Rong Wang
The sensitive olfactory system is necessary for survival of insects. Odorant receptors (ORs) are located on the dendrites of olfactory receptor neurons and play a critical role in odor detection. Insect ORs are functionally analyzed via heterologous expression in a Xenopus oocyte system using a two-electrode voltage-clamp (TEVC) electrophysiological recording. Here, we have identified a novel OR in the pea aphid, Acyrthosiphon pisum, then we cloned and named it ApisOR4. We analyzed the ApisOR4 tissue expression patterns and found expression only in antennae tissues...
July 21, 2017: Insect Science
https://www.readbyqxmd.com/read/28729797/hypochlorite-solution-for-root-canal-irrigation-that-lacks-a-chlorinated-odor
#18
La-Ongthong Vajrabhaya, Vanida Sangalungkarn, Ratchapin Srisatjaluk, Suwanna Korsuwannawong, Chareerut Phruksaniyom
OBJECTIVES: This is an in vitro study to develop a formulation of a hypochlorite solution for root canal irrigation that lacks a chlorinated odor. The antibacterial effect, tissue dissolution efficacy, and the cytotoxicity of the solution were assessed in cell culture and were compared with those of commercial sodium hypochlorite (NaOCl) solutions. MATERIALS AND METHODS: Trichloroisocyanuric acid (TCA) was used as the source of hypochlorite ions in solution. All required properties of the NaOCl irrigant were evaluated and compared with those of original 2...
April 2017: European Journal of Dentistry
https://www.readbyqxmd.com/read/28729609/maternally-transmitted-microbiota-affects-odor-emission-and-preference-in-drosophila-larva
#19
Jean-Pierre Farine, Wafa Habbachi, Jérôme Cortot, Suzy Roche, Jean-François Ferveur
Experimental studies show that early sensory experience often affects subsequent sensory preference, suggesting that the heterogeneity of sensory cues in nature could induce significant inter-individual behavioral variation, potentially contributing to maintain intraspecific diversity. To test this hypothesis, we explored the behavioral effect induced by variation in the levels of a self-produced chemical, acetoin, and its link with intraspecific diversity. Acetoin is a pheromone-like substance produced by gut-associated microorganisms in Drosophila...
July 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28728788/emission-characteristics-and-variation-of-volatile-odorous-compounds-in-the-initial-decomposition-stage-of-municipal-solid-waste
#20
Haobo Tan, Yan Zhao, Yue Ling, Ying Wang, Xuemei Wang
The odour pollution occurring in the initial decomposition stage of municipal solid waste (MSW), including collection, transfer and transportation, has not been sufficiently emphasised. Thus the emission characteristics of and variation in odorant generation in this stage were investigated through simulation experiments at different temperatures, waste composition and processing durations. Out of 120 odorous compounds, 52 were detected in seven categories under all tested conditions, with significant variations...
July 17, 2017: Waste Management
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