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Fangfang Zeng et al.
Insect biochemistry and molecular biology, 113, 103213-103213 (2019-08-24)
Mosquitoes rely heavily on the olfactory system to find a host for a bloodmeal, plants for a source of energy and suitable sites for oviposition. Here, we examined a cluster of eight odorant receptors (ORs), which includes one OR, CquiOR1
Carlos M Contreras et al.
Neuropsychobiology, 66(3), 167-173 (2012-09-06)
Wistar rats subjected to physical stress release a urine alarm pheromone (2-heptanone) that produces signs of anxiety and despair in receptor rats not subjected to physical stress. However, unknown are the effects of 2-heptanone on the firing rate of the
V A Isidorov et al.
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences, 885-886, 109-116 (2012-01-17)
Using headspace solid-phase microextraction (HS-SPME) followed by diethyl ether and methanol extraction, it was possible to isolate as many as 185 organic compounds out of 17 samples of crude royal jelly (RJ). Of the above compound number, 169 compounds were
Chun-Chieh Lin et al.
PloS one, 10(10), e0139675-e0139675 (2015-10-03)
Drosophila olfactory receptor neurons are found within specialized sensory hairs on antenna and maxillary palps. The linking of odorant-induced responses to olfactory neuron activities is often accomplished via Single Sensillum Recordings (SSR), in which an electrode inserted into a single
T Fujita et al.
Clinica chimica acta; international journal of clinical chemistry, 287(1-2), 99-109 (1999-10-06)
Pipecolic acid is regarded as a gamma-aminobutyric acid receptor agonist. Stereochemical studies of pipecolic acid were performed in patients with chronic liver diseases. Plasma D- and L-pipecolic acid were significantly elevated in 15 liver cirrhotic patients with no history of
Yvette Naudé et al.
Journal of chromatography. A, 1216(14), 2798-2804 (2008-10-22)
A headspace sampling method is described for concentrating milk volatiles onto a multi-channel open tubular silicone rubber trap (MCT) for thermal desorption into a GC-FID. Sections of the chromatographic profile, single peaks or combinations of compounds are recaptured with secondary
Julien Januszkiewicz et al.
Journal of chromatography. A, 1195(1-2), 16-24 (2008-05-23)
A headspace solid-phase microextraction (HS-SPME) combined with gas chromatography-mass spectrometry (GC/MS) method was developed using experimental designs to quantify the flavor of commercial Cheddar cheese and enzyme-modified Cheddar cheese (EMCC). Seven target compounds (dimethyl disulfide, hexanal, hexanol, 2-heptanone, ethyl hexanoate
Pascale Chalier et al.
Journal of agricultural and food chemistry, 55(3), 867-875 (2007-02-01)
The transport properties of two methyl ketones, 2-heptanone and 2-nonanone, through a paper coated with a wheat gluten (WG) solution were studied as a function of aroma compound concentration differential and relative humidity. Whatever the conditions, coating improved the aroma
Yoshinori Suzuki et al.
Current biology : CB, 30(6), 1110-1118 (2020-03-07)
Serotonin (5-HT) represents a quintessential neuromodulator, having been identified in nearly all animal species [1] where it functions in cognition [2], motor control [3], and sensory processing [4]. In the olfactory circuits of flies and mice, serotonin indirectly inhibits odor
Ana Rivas-Cañedo et al.
Meat science, 93(2), 178-186 (2012-10-03)
The effect of dietary supplementation with either vitamin E (300 ppm) or a red wine extract rich in polyphenols (900 ppm) in an omega-3 enriched concentrate on the volatile fraction of lamb meat was assessed. The effect of refrigerated storage
Koutaroh Okada et al.
Chemical senses, 34(5), 425-433 (2009-04-14)
The olfactory system of an insect brain codes for information about odorant quality and quantity using the temporal pattern of neural activity as well as neurons' firing. Although an accurate odor temporal pattern is indispensable for investigations of olfactory systems
Poonam Bhandari et al.
Chemical senses, 31(7), 627-639 (2006-06-10)
Integrins are cell adhesion molecules that mediate numerous developmental processes in addition to a variety of acute physiological events. Two reports implicate a Drosophila beta integrin, betaPS, in olfactory behavior. To further investigate the role of integrins in Drosophila olfaction
Ontogeny of the fine structure of the mandibular glands of the honeybee (Apis mellifera L.) workers and the pheromonal activity of 2-heptanone.
Vallet A, et al.
Journal of Insect Physiology, 37(11), 789-804 (1991)
Alina Silvia Chiper et al.
The journal of physical chemistry. A, 114(1), 397-407 (2009-12-05)
The products of 2-heptanone conversion by dielectric barrier discharge plasma are analyzed under different conditions: alternating current (ac) or pulsed mode of excitation, variable energy, variable composition of the carrier gas. The efficiency of the conversion is higher using a
Ana G Gutiérrez-García et al.
Physiology & behavior, 91(1), 166-172 (2007-04-06)
The present study was aimed to determine whether the urine from donor rats, which were physically stressed (UD-PS) by unavoidable electric footshocks, produces despair in receptor partner rats (RP) in the long-term. For each trial, an RP rat was placed
M A Kotterman et al.
Gene therapy, 22(2), 116-126 (2014-12-17)
Gene delivery vectors based on adeno-associated viruses (AAV) have exhibited promise in both preclinical disease models and human clinical trials for numerous disease targets, including the retinal degenerative disorders Leber's congenital amaurosis and choroideremia. One general challenge for AAV is
Miriam Kolko et al.
Molecular vision, 20, 511-521 (2014-05-03)
To investigate the significance of calcium-independent phospholipase A₂, group VIA (iPLA2-VIA), in RPE cell survival following responses to sodium iodate (SI) in cell cultures. The human retinal pigment epithelium (RPE) cell line (ARPE-19) cells and primary mouse-RPE cultures were treated
Adriana de Lima Mendonça et al.
Antonie van Leeuwenhoek, 95(4), 295-303 (2009-02-14)
The secretions of the mandibular and metapleural glands of leaf cutting ants contain antimicrobial substances that protect the mutualistic fungal colony within the nest from attack by parasitic micro-organisms. The major constituents of these secretions (citral, 4-methyl-3-heptanol, 2-heptanone, 3-octanone, 4-methyl-2-heptanone
Catarina L Silva et al.
Talanta, 89, 360-368 (2012-01-31)
A sensitive assay to identify volatile organic metabolites (VOMs) as biomarkers that can accurately diagnose the onset of breast cancer using non-invasively collected clinical specimens is ideal for early detection. Therefore the aim of this study was to establish the
J Enrique Cometto-Muñiz et al.
Behavioural brain research, 201(1), 207-215 (2009-05-12)
We measured concentration-detection (i.e., psychometric) odor functions for the homologous ketones propanone (acetone), 2-pentanone, 2-heptanone, and 2-nonanone. Under a forced-choice procedure, stimuli were presented via an 8-channel air-dilution olfactometer that allowed natural sampling of the odorant and whose output was
Alexandros Papachristoforou et al.
PloS one, 7(10), e47432-e47432 (2012-10-24)
Honeybees secrete 2-heptanone (2-H) from their mandibular glands when they bite. Researchers have identified several possible functions: 2-H could act as an alarm pheromone to recruit guards and soldiers, it could act as a chemical marker, or it could have
Olga E Melkina et al.
Applied microbiology and biotechnology, 101(14), 5765-5771 (2017-06-04)
Many bacteria, fungi, and plants produce volatile organic compounds (VOCs) emitted to the environment. Bacterial VOCs play an important role in interactions between microorganisms and in bacterial-plant interactions. Here, we show that such VOCs as ketones 2-heptanone, 2-nonanone, and 2-undecanone
Shaofeng Yuan et al.
Journal of the science of food and agriculture, 99(8), 3761-3768 (2019-01-15)
Aroma scalping is a very common problem and can affect the sensory quality of packaged food. To study the aroma scalping characteristics of polyethylene terephthalate laminated steel (PET-LS), the sorption kinetics of six common aroma compounds (2-pentanone, 2-heptanone, hexanal, citral
Margaret J Couvillon et al.
Journal of chemical ecology, 36(12), 1306-1308 (2010-11-12)
Honey bee (Apis mellifera) guards discriminate nestmates from non-nestmates at the hive entrance. The acceptance threshold of guards is known to change adaptively, for example becoming less permissive when the number of intruder bees from other colonies increases. These adaptive
A W Marshall et al.
Clinical physiology (Oxford, England), 5(1), 53-62 (1985-02-01)
3-Methylbutanal is a volatile aldehyde which in the rat is derived, at least in part, from colonic bacterial breakdown of leucine. It has been proposed as a toxin of importance in the pathogenesis of hepatic encephalopathy in man. A rapid
Jackelin Q Tran et al.
Archives of environmental contamination and toxicology, 63(1), 169-176 (2012-03-22)
The transport of mixed paint solvents through natural rubber latex (4 mil) and nitrile rubber (5 mil) gloves was evaluated after spray application of the paint formulation directly on the glove surface. Glove materials and thicknesses were those selected by
Jae Hee Hong et al.
Journal of agricultural and food chemistry, 54(24), 9168-9175 (2006-11-23)
Copper is thought to influence aroma perception by affecting volatility of aroma compounds in the mouth through interaction with salivary components, especially proteins. Our objective was to identify the effect of copper on the volatility of aroma compounds and the
J Wang et al.
Journal of dairy science, 104(2), 1576-1590 (2020-12-29)
To determine the odor-active compounds in Cheddar cheeses with different ripening times (6, 10, and 14 mo), 39 potent odorants of Cheddar cheeses were identified with a flavor dilution factor range between 1 and 512 by aroma extract dilution analysis.
Jian-Xu Zhang et al.
Chemical senses, 33(7), 611-621 (2008-06-03)
This study was aimed at identifying sex pheromones of the rat (Rattus norvegicus). We characterized the volatiles and semivolatiles of rat preputial gland and voided urine by using gas chromatography-mass spectrometry (GC-MS) and quantified them by their GC areas (abundances)
S Böttcher et al.
Food chemistry, 169, 492-498 (2014-09-23)
The aim of the present study was to evaluate the off-flavour masking potential of pea dextrin (PD) in emulsions rich in ω-3 and ω-6-fatty acids in comparison with maltodextrin (MD) and 2-hydroxypropyl-β-cyclodextrin (HPBCD). After optimisation of the homogenisation procedure, stable
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