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https://www.readbyqxmd.com/read/28319800/inhibition-of-salmonella-typhimurium-on-radish-sprouts-using-nitrogen-cold-plasma
#1
Yeong Ji Oh, A Young Song, Sea C Min
This study investigated the effects of cold plasma treatment (CPT) on the inhibition of Salmonella typhimurium on radish sprouts and the quality attributes of the sprouts. Radish sprouts were treated with nitrogen (N2)-cold plasma at 900W and 667Pa for 0, 2, 5, 10, and 20min using a microwave-powered CPT system. The sensory attributes of the radish sprouts, appearance and odor, were evaluated before and after the treatment. The effects of N2-CPT for 10min on microbial growth and the quality attributes of the radish sprouts were evaluated during storage for 12days at 4 and 10°C...
March 10, 2017: International Journal of Food Microbiology
https://www.readbyqxmd.com/read/28318272/investigations-on-the-aroma-of-cocoa-pulp-theobroma-cocoa-l-and-its-influence-on-the-odor-of-fermented-cocoa-beans
#2
Irene Chetschik, Markus Kneubühl, Karin Chatelain, Ansgar Schlüter, Konrad Bernath, Tilo Hühn
The odor active constituents of cocoa pulp have been analyzed by aroma extract dilution analysis (AEDA) for the first time. Pulps of three different cocoa varieties have been investigated. The variety CCN51 showed low flavor intensities in terms of FD-factors, in comparison to the varieties FSV41 and UF564, for which floral and fruity notes were detected in higher intensities. In order to gain first insights on molecular level how the cocoa pulp odorants impacted the odor quality of cocoa beans during fermentation, quantitative measurements of selected aroma compounds were conducted in pulp and bean at different time points of the fermentation...
March 20, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28315996/olfactory-preferences-of-the-parasitic-nematode-howardula-aoronymphium-and-its-insect-host-drosophila-falleni
#3
James A Cevallos, Ryo P Okubo, Steve J Perlman, Elissa A Hallem
Many parasitic nematodes have an environmental infective stage that searches for hosts. Olfaction plays an important role in this process, with nematodes navigating their environment using host-emitted and environmental olfactory cues. The interactions between parasitic nematodes and their hosts are also influenced by the olfactory behaviors of the host, since host olfactory preferences drive behaviors that may facilitate or impede parasitic infection. However, how olfaction shapes parasite-host interactions is poorly understood...
March 18, 2017: Journal of Chemical Ecology
https://www.readbyqxmd.com/read/28315137/sheep-fed-with-banana-leaf-hay-reduce-ruminal-protozoa-population
#4
Cláudio Eduardo Silva Freitas, Eduardo Robson Duarte, Dorismar David Alves, Isabel Martinele, Marta D'Agosto, Franciane Cedrola, Angélica Alves de Moura Freitas, Franklin Delano Dos Santos Soares, Makenzi Beltran
A ciliate protozoa suppression can reduce methane production increasing the energy efficiency utilization by ruminants. The physicochemical characteristics of rumen fluid and the profile of the rumen protozoa populations were evaluated for sheep fed banana leaf hay in replacement of the Cynodon dactylon cv. vaqueiro hay. A total of 30 male sheep were raised in intensive system during 15 days of adaptation and 63 days of experimental period. The animals were distributed in a completely randomized design that included six replicates of five treatments with replacement levels (0, 25, 50, 75, and 100%) of the grass vaquero for the banana leaf hay...
March 17, 2017: Tropical Animal Health and Production
https://www.readbyqxmd.com/read/28301269/the-long-tale-of-the-calcium-activated-cl-channels-in-olfactory-transduction
#5
Michele Dibattista, Simone Pifferi, Anna Boccaccio, Anna Menini, Johannes Reisert
Ca(2+)-activated Cl(-) currents have been implicated in many cellular processes in different cells, but for many years, their molecular identity remained unknown. Particularly intriguing are Ca(2+)-activated Cl(-) currents in olfactory transduction, first described in the early 90s. Well characterized electrophysiologically, they carry most of the odorant-induced receptor current in the cilia of olfactory sensory neurons (OSNs). After many attempts to determine their molecular identity, TMEM16B was found to be abundantly expressed in the cilia of OSNs in 2009 and having biophysical properties like those of the native olfactory channel...
March 16, 2017: Channels
https://www.readbyqxmd.com/read/28301188/effects-of-inference-on-dopaminergic-prediction-errors-depend-on-orbitofrontal-processing
#6
Yuji K Takahashi, Thomas A Stalnaker, Matthew R Roesch, Geoffrey Schoenbaum
Dopaminergic reward prediction errors in monkeys reflect inferential reward predictions that well-trained animals can make when associative rules change. Here, in a new analysis of previously described data, we test whether dopaminergic error signals in rats are influenced by inferential predictions and whether such effects depend on the orbitofrontal cortex (OFC). Dopamine neurons were recorded from controls or rats with ipsilateral OFC lesions during performance of a choice task in which odor cues signaled the availability of sucrose reward in 2 wells...
April 2017: Behavioral Neuroscience
https://www.readbyqxmd.com/read/28300204/non-invasive-aerosol-delivery-and-transport-of-gold-nanoparticles-to-the-brain
#7
Ramesh Raliya, Debajit Saha, Tandeep S Chadha, Baranidharan Raman, Pratim Biswas
Targeted delivery of nanoscale carriers containing packaged payloads to the central nervous system has potential use in many diagnostic and therapeutic applications. Moreover, understanding of the bio-interactions of the engineered nanoparticles used for tissue-specific delivery by non-invasive delivery approaches are also of paramount interest. Here, we have examined this issue systematically in a relatively simple invertebrate model using insects. We synthesized 5 nm, positively charged gold nanoparticles (AuNPs) and targeted their delivery using the electrospray aerosol generator...
March 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28299692/a-light-addressable-potentiometric-sensor-for-odorant-detection-using-single-bioengineered-olfactory-sensory-neurons-as-sensing-element
#8
Chunsheng Wu, Liping Du, Yulan Tian, Xi Zhang, Ping Wang
A light-addressable potentiometric sensor (LAPS), a silicon-based surface potential detector, is combined with bioengineered olfactory sensory neurons (OSN) for odorant detection. A LAPS chip is used as a transducer to monitor cell membrane potential changes. In addition, a focused movable laser with a diameter comparable to cell sizes is employed to select the desirable single cell for measurement under a microscope. Bioengineered OSNs are coupled to the LAPS surface and employed as sensing elements, which are prepared by the expression of an olfactory receptor of C...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28298688/quality-storability-and-essential-oil-content-of-ligularia-fischeri-during-modified-atmosphere-packaging-storage
#9
M A Mele, M Z Islam, J P Baek, H M Kang
Modified atmosphere packaging (MAP) enhanced the quality and storability of Ligularia fischeri. Oxygen transmission rate (OTR) films were used as a MAP. MAP storage displayed lower fresh weight loss than perforated film. The oxygen, carbon dioxide, and ethylene concentration were properly maintained by a 10,000 cc OTR packaging film at 8 °C and 30,000 cc OTR packaging film at 24 °C. On the last day of storage, the off-odor, such as the acetaldehyde and ethanol concentration, was the lowest in the 10,000 cc OTR film at 8 °C and 30,000 cc OTR film at 24 °C treatments...
March 2017: Journal of Food Science and Technology
https://www.readbyqxmd.com/read/28297637/toxicity-of-%C3%AE-citronellol-geraniol-and-linalool-from-pelargonium-roseum-essential-oil-against-the-west-nile-and-filariasis-vector-culex-pipiens-diptera-culicidae
#10
Mohaddeseh Abouhosseini Tabari, Mohammad Reza Youssefi, Aryan Esfandiari, Giovanni Benelli
Insect vectors are responsible for spreading devastating parasites and pathogens. A large number of botanicals have been suggested for eco-friendly control programs against mosquito vectors, and some of them are aromatic plants. Pelargonium roseum, a species belonging to the Geraniaceae family, due to its pleasant rose-like odor may represent a suitable candidate as mosquito repellent and/or larvicide. In this research, we evaluated the toxicity of the essential oil from P. roseum and its major constituents against the West Nile and filariasis vector Culex pipiens...
March 6, 2017: Research in Veterinary Science
https://www.readbyqxmd.com/read/28296270/analogues-of-dehydroacetic-acid-as-selective-and-potent-agonists-of-an-ectopic-odorant-receptor-through-a-combination-of-hydrophilic-and-hydrophobic-interactions
#11
Bernie Byunghoon Park, NaHye Lee, YunHye Kim, YoonGyu Jae, Seunghyun Choi, NaNa Kang, Yu Ri Hong, Kiwon Ok, Jeonghee Cho, Young Ho Jeon, Eun Hee Lee, Youngjoo Byun, JaeHyung Koo
Identification of potent agonists of odorant receptors (ORs), a major class of G protein-coupled receptors, remains challenging due to complex receptor-ligand interactions. ORs are present in both olfactory and non-chemosensory tissues, indicating roles beyond odor detection that may include modulating physiological functions in non-olfactory tissues. Selective and potent agonists specific for particular ORs can be used to investigate physiological functions of ORs in non-chemosensory tissues. In this study, we designed and synthesized novel synthetic dehydroacetic acid analogues as agonists of odorant receptor 895 (Olfr895) expressed in bladder...
March 15, 2017: ChemMedChem
https://www.readbyqxmd.com/read/28293386/toxicology-effects-of-saffron-and-its-constituents-a-review
#12
REVIEW
Hasan Badie Bostan, Soghra Mehri, Hossein Hosseinzadeh
Saffron (Crocus sativus L.) has been considered as a medicinal plant since ancient times and also widely used as food additive for its color, taste and odor. The pharmacological properties of saffron and its main constituents, crocin and safranal have been evaluated using different in vivo and in vitro models. Additionally, other lines of studies have found toxicological effects of saffron. However, a comprehensive review that covers all aspects of its toxicity has not been published yet. The current study provides classified information about the toxic effects of saffron and its constituents in various exposure conditions including acute, sub-acute, sub-chronic and chronic studies...
February 2017: Iranian Journal of Basic Medical Sciences
https://www.readbyqxmd.com/read/28292323/relationships-between-pathologic-subjective-halitosis-olfactory-reference-syndrome-and-social-anxiety-in-young-japanese-women
#13
Miho Tsuruta, Toru Takahashi, Miki Tokunaga, Masanori Iwasaki, Shota Kataoka, Satoko Kakuta, Inho Soh, Shuji Awano, Hiromi Hirata, Masaharu Kagawa, Toshihiro Ansai
BACKGROUND: Pathologic subjective halitosis is known as a halitosis complaint without objective confirmation of halitosis by others or by halitometer measurements; it has been reported to be associated with social anxiety disorder. Olfactory reference syndrome is a preoccupation with the false belief that one emits a foul and offensive body odor. Generally, patients with olfactory reference syndrome are concerned with multiple body parts. However, the mouth is known to be the most common source of body odor for those with olfactory reference syndrome, which could imply that the two conditions share similar features...
March 14, 2017: BMC Psychology
https://www.readbyqxmd.com/read/28290515/identification-of-accessory-olfactory-system-and-medial-amygdala-in-the-zebrafish
#14
Daniela Biechl, Kristin Tietje, Soojin Ryu, Benedikt Grothe, Gabriele Gerlach, Mario F Wullimann
Zebrafish larvae imprint on visual and olfactory cues of their kin on day 5 and 6 postfertilization, respectively. Only imprinted (but not non-imprinted) larvae show strongly activated crypt (and some microvillous) cells demonstrated by pERK levels after subsequent exposure to kin odor. Here, we investigate the olfactory bulb of zebrafish larvae for activated neurons located at the sole glomerulus mdG2 which receives crypt cell input. Imprinted larvae show a significantly increased activation of olfactory bulb cells compared to non-imprinted larvae after exposure to kin odor...
March 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28290313/high-hydrostatic-pressure-treatments-enhance-volatile-components-of-pre-germinated-brown-rice-revealed-by-aromatic-fingerprinting-based-on-hs-spme-gc-ms-and-chemometric-methods
#15
Qiang Xia, Jun Mei, Wenjuan Yu, Yunfei Li
Germination favors to significantly enhance functional components and health attributes of whole-grain brown rice (BR), but the production of germinated BR (GBR) compromises the typical rice flavor perception due to soaking process. Simultaneously, high hydrostatic pressure (HHP) is considered as an effective processing technique to enhance micronutrients utilization efficiency of GBR and improve products flavor, but no information about the effects of HHP treatments on volatile fingerprinting of GBR has been reported...
January 2017: Food Research International
https://www.readbyqxmd.com/read/28289233/volatile-secondary-metabolites-as-aposematic-olfactory-signals-and-defensive-weapons-in-aquatic-environments
#16
Giuseppe Giordano, Marianna Carbone, Maria Letizia Ciavatta, Eleonora Silvano, Margherita Gavagnin, Mary J Garson, Karen L Cheney, I Wayan Mudianta, Giovanni Fulvio Russo, Guido Villani, Laura Magliozzi, Gianluca Polese, Christian Zidorn, Adele Cutignano, Angelo Fontana, Michael T Ghiselin, Ernesto Mollo
Olfaction is considered a distance sense; hence, aquatic olfaction is thought to be mediated only by molecules dissolved in water. Here, we challenge this view by showing that shrimp and fish can recognize the presence of hydrophobic olfactory cues by a "tactile" form of chemoreception. We found that odiferous furanosesquiterpenes protect both the Mediterranean octocoral Maasella edwardsi and its specialist predator, the nudibranch gastropod Tritonia striata, from potential predators. Food treated with the terpenes elicited avoidance responses in the cooccurring shrimp Palaemon elegans Rejection was also induced in the shrimp by the memory recall of postingestive aversive effects (vomiting), evoked by repeatedly touching the food with chemosensory mouthparts...
March 13, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28286547/identification-of-the-aroma-compounds-in-vitex-doniana-sweet-free-and-bound-odorants
#17
Ola Lasekan
BACKGROUND: Most often, the glycosidically-bound aroma compounds are released during industrial processing or pre-treatment of fruits. This usually introduces modification to the aroma notes of such fruits. Therefore, there is the need to understand the contribution of these bound aroma compounds to the overall aroma of a given fruit. In recent years research studies have reported on the free- and bound volatile compounds of several fruits. However, there is no report yet on Vitex doniana sweet...
2017: Chemistry Central Journal
https://www.readbyqxmd.com/read/28285523/encoding-odorant-images
#18
Madeleine Marie Rochelle, Géraldine Julie Prévost, Terry Edward Acree
This perspective examines psychophysical methods that may reveal the algorithms that encode odor images by integrating current data from sensory measurement into a computational model of odor perception. There is evidence that algorithms used by the nervous system to process odor sensations require input from only a few odorants, between 3 and 8. Furthermore, the number of recognizable odors in foods that contribute anything to the aroma of all foods is approximately 250.8 This may imply that it is the ratio of a small number of key odorants (KOs) that create a multitude of food odor...
March 12, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28285516/investigation-on-key-molecules-of-hlb-induced-orange-juice-off-flavor
#19
Johannes Kiefl, Birgit Kohlenberg, Anja Hartmann, Katja Obst, Susanne Paetz, Gerhard E Krammer, Stephan Trautzsch
Orange fruits from Huanglongbing (HLB) infected trees do not fully mature and show a severe off-flavor described as bitter-harsh, metallic and less juicy and fruity. The investigation of juice from HLB infected (HLBOJ) and healthy control oranges (COJ) by gas chromatography mass spectrometry showed higher concentrations of fruity esters such as ethyl butyrate and ethyl 2-methylbutyrate, and soapy-waxy alkanals such as octanal and decanal in the COJ whereas the HLBOJ showed higher concentrations of green aldehydes like hexanal and degradation compounds of limonene and linalool like α-terpineol...
March 11, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28284947/behavioral-characterization-of-blocking-the-erbb-signaling-during-adolescent-and-adulthood-in-reward-liking-preference-and-reward-related-learning
#20
Hagar Tadmor, Idit Golani, Eshkar Dvir, Ilana Kremer, Alon Shamir
Adolescence is a critical period in brain development. During this critical period the seeking for hedonic activities is increased, and their activity signals are stronger than the regulatory signals of judgment and reasoning. We recently reported that alteration of ErbB signaling during this period led to elevated striatal dopamine levels and reduced preference for sweetness without affecting locomotor activity and exploratory behavior. In the current study, we extend our findings and explore whether inhibition of the ErbB pathway during adolescence or adulthood also affects alcohol preference (hedonic "liking"), avoidance learning, and motivational reward "wanting"...
March 8, 2017: Behavioural Brain Research
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