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Tohru Fushiki - One of the best experts on this subject based on the ideXlab platform.
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Sedative effects of the Jasmine tea odor and (R)-(−)-linalool, one of its major odor components, on autonomic nerve activity and mood states
European Journal of Applied Physiology, 2005Co-Authors: Kyoko Kuroda, Naohiko Inoue, Akio Sugimoto, Takami Kakuda, Kikue Kubota, Tohru FushikiAbstract:We investigated the effects of the odor of Jasmine tea on autonomic nerve activity and mood states in a total of 24 healthy volunteers. We used the odor of Jasmine tea at the lowest concentration that could be detected by each subject but that did not elicit any psychological effects. R–R intervals and the POMS test were measured before and after inhalation of the odors for 5 min. Both Jasmine tea and lavender odors at perceived similar intensity caused significant decreases in heart rate and significant increases in spectral integrated values at high-frequency component in comparison with the control ( P < 0.05). In the POMS tests, these odors produced calm and vigorous mood states. We also examined the effects of ( R )-(−)-linalool, one of its major odor components, at the same concentration as in the tea, and ( S )-(+)-linalool. Only ( R )-(−)-linalool elicited a significant decrease in heart rate ( P < 0.05) and an increase in high-frequency component in comparison with the controls, and produced calm and vigorous mood states. Thus, the low intensity of Jasmine tea odor has sedative effects on both autonomic nerve activity and mood states, and ( R )-(−)-linalool, one of its components, can mimic these effects.
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sedative effects of the Jasmine tea odor and r linalool one of its major odor components on autonomic nerve activity and mood states
European Journal of Applied Physiology, 2005Co-Authors: Kyoko Kuroda, Naohiko Inoue, Akio Sugimoto, Takami Kakuda, Kikue Kubota, Tohru FushikiAbstract:We investigated the effects of the odor of Jasmine tea on autonomic nerve activity and mood states in a total of 24 healthy volunteers. We used the odor of Jasmine tea at the lowest concentration that could be detected by each subject but that did not elicit any psychological effects. R–R intervals and the POMS test were measured before and after inhalation of the odors for 5 min. Both Jasmine tea and lavender odors at perceived similar intensity caused significant decreases in heart rate and significant increases in spectral integrated values at high-frequency component in comparison with the control (P < 0.05). In the POMS tests, these odors produced calm and vigorous mood states. We also examined the effects of (R)-(−)-linalool, one of its major odor components, at the same concentration as in the tea, and (S)-(+)-linalool. Only (R)-(−)-linalool elicited a significant decrease in heart rate (P < 0.05) and an increase in high-frequency component in comparison with the controls, and produced calm and vigorous mood states. Thus, the low intensity of Jasmine tea odor has sedative effects on both autonomic nerve activity and mood states, and (R)-(−)-linalool, one of its components, can mimic these effects.
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Autonomic nervous responses according to preference for the odor of Jasmine tea.
Bioscience Biotechnology and Biochemistry, 2003Co-Authors: Naohiko Inoue, Kyoko Kuroda, Akio Sugimoto, Takami Kakuda, Tohru FushikiAbstract:The effect of Jasmine tea odor on the autonomic nervous system was investigated by a power spectral analysis of the heart rate variability. We assigned eight volunteers to two groups with either a predilection for or antipathy toward the Jasmine tea odor. We tested both high- and low-intensity Jasmine tea odors. The low-intensity odor was produced by diluting 20-fold the Jasmine tea used for the high-intensity odor test. The low-intensity odor produced an increase in parasympathetic nervous activity in both the predilection and antipathy groups. The high-intensity odor produced an increase in parasympathetic nervous activity in the predilection group, but an increase in sympathetic nervous activity in the antipathy group. The odor of Chinese green tea, a basic ingredient of Jasmine tea, produced no effects similar to those of the Jasmine tea odor. These results suggest that the Jasmine tea odor activated the parasympathetic nerve, whereas the higher-intensity odor activated the sympathetic nerve in those ...
Zhenyu Chen - One of the best experts on this subject based on the ideXlab platform.
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inhibitory effects of Jasmine green tea epicatechin isomers on free radical induced lysis of red blood cells
Life Sciences, 1997Co-Authors: Anqi Zhang, Ka Yan Ho, Kwokpui Fung, Zhenyu ChenAbstract:Jasmine green tea is an excellent source of natural polyphenol antioxidants including mainly (-) epicatechin (EC), (-) epicatechin gallate (ECG), (-) epigallocatechin (EGC) and (-) epigallocatechin gallate (EGCG). The present study was to test our hypothesis that ingestion of Jasmine tea would protect red blood cell (RBC) membrane from free radical-induced oxidation if Jasmine tea epicatechin isomers could be absorbed and circulated in blood. When incubated with RBC suspension, all four epicatechin isomers purified from Jasmine tea exhibited a strong protection for RBC membrane to hemolysis induced by 2,2′-azo-bis(2-amidinopropane) dihydrochloride (AAPH), an azo free radical initiator. The inhibitory effect was dose-dependent at the concentrations of 2.5 μiM to 40 μM. The fatty acid analysis revealed that all four epicatechin isomers significantly prevented loss of arachidonic acid (20:4n-6) and docosahexaenoic acid (22:6n-3) in RBC incubated under the same conditions. Although the in vitro antioxidative activity of EGCG and ECG was more effective than EGC and EC, the latter two isomers were more important in vivo in scavenging free radicals. This was because only EGC and EC instead of EGCG and ECG were circulating in blood stream after a gavage-dose of 100 mg Jasmine tea GTP mixture. In fact, ingestion of Jasmine tea GTP extracts was associated with a significant decrease in susceptibility of RBC to hemolysis in rats.
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Inhibitory effect of Jasmine green tea epicatechin isomers on LDL-oxidation
Journal of Nutritional Biochemistry, 1997Co-Authors: Anqi Zhang, Ping Tim Chan, Walter K.k. Ho, Zhenyu ChenAbstract:Oxidative modification of low-density lipoproteins (LDL) is thought to play an important role in the development of atherosclerosis. The present study examined inhibitory effect of Jasmine green tea polyphenol (GTP) extracts and its individual epicatechin isomers on Cu+2-mediated oxidation of human LDL. The Jasmine tea GTP extracts consisted mainly of four epicatechin isomers with (−) epigallocatechin gallate (EGCG) being most abundant (51.2%) followed by (−) epigallocatechin (EGC, 18.7%), (−) epicatechin (EC, 12.3%), and (−) epicatechin gallate (ECG, 11.8%). Jasmine tea GTP as a mixture or its four epicatechin isomers demonstrated strong antioxidant activity in Cu+2-mediated oxidation of human LDL. The inhibitory effect of these epicatechin isomers on LDL oxidation was dose-dependent at the concentrations ranging from 5 to 40 μM. EC and EGC were less protective against LDL oxidation than their gallate derivatives, ECG and EGCG, respectively. ECG and EGCG seemed to have a similar antioxidant activity. In contrast, EGC was less effective than EC as an antioxidant against LDL oxidation. The inhibitory effect of Jasmine green tea epicatechin isomers on Cu+2-mediated oxidation was also characterized by protecting docosahexaenoic, arachidonic, α-linolenic, and linoleic acid in LDL against oxidative degradation. We conclude that, in addition to their hypocholesterolemic effect, Jasmine tea epicatechin isomers may serve as a source of natural antioxidative agents in human diet.
Kikue Kubota - One of the best experts on this subject based on the ideXlab platform.
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Sedative effects of the Jasmine tea odor and (R)-(−)-linalool, one of its major odor components, on autonomic nerve activity and mood states
European Journal of Applied Physiology, 2005Co-Authors: Kyoko Kuroda, Naohiko Inoue, Akio Sugimoto, Takami Kakuda, Kikue Kubota, Tohru FushikiAbstract:We investigated the effects of the odor of Jasmine tea on autonomic nerve activity and mood states in a total of 24 healthy volunteers. We used the odor of Jasmine tea at the lowest concentration that could be detected by each subject but that did not elicit any psychological effects. R–R intervals and the POMS test were measured before and after inhalation of the odors for 5 min. Both Jasmine tea and lavender odors at perceived similar intensity caused significant decreases in heart rate and significant increases in spectral integrated values at high-frequency component in comparison with the control ( P < 0.05). In the POMS tests, these odors produced calm and vigorous mood states. We also examined the effects of ( R )-(−)-linalool, one of its major odor components, at the same concentration as in the tea, and ( S )-(+)-linalool. Only ( R )-(−)-linalool elicited a significant decrease in heart rate ( P < 0.05) and an increase in high-frequency component in comparison with the controls, and produced calm and vigorous mood states. Thus, the low intensity of Jasmine tea odor has sedative effects on both autonomic nerve activity and mood states, and ( R )-(−)-linalool, one of its components, can mimic these effects.
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sedative effects of the Jasmine tea odor and r linalool one of its major odor components on autonomic nerve activity and mood states
European Journal of Applied Physiology, 2005Co-Authors: Kyoko Kuroda, Naohiko Inoue, Akio Sugimoto, Takami Kakuda, Kikue Kubota, Tohru FushikiAbstract:We investigated the effects of the odor of Jasmine tea on autonomic nerve activity and mood states in a total of 24 healthy volunteers. We used the odor of Jasmine tea at the lowest concentration that could be detected by each subject but that did not elicit any psychological effects. R–R intervals and the POMS test were measured before and after inhalation of the odors for 5 min. Both Jasmine tea and lavender odors at perceived similar intensity caused significant decreases in heart rate and significant increases in spectral integrated values at high-frequency component in comparison with the control (P < 0.05). In the POMS tests, these odors produced calm and vigorous mood states. We also examined the effects of (R)-(−)-linalool, one of its major odor components, at the same concentration as in the tea, and (S)-(+)-linalool. Only (R)-(−)-linalool elicited a significant decrease in heart rate (P < 0.05) and an increase in high-frequency component in comparison with the controls, and produced calm and vigorous mood states. Thus, the low intensity of Jasmine tea odor has sedative effects on both autonomic nerve activity and mood states, and (R)-(−)-linalool, one of its components, can mimic these effects.
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identification of potent odorants in chinese Jasmine green tea scented with flowers of jasminum sambac
Journal of Agricultural and Food Chemistry, 2002Co-Authors: Akio Sugimoto, Takami Kakuda, Kikue KubotaAbstract:The odorants in Chinese Jasmine green tea scented with Jasmine flowers (Jasminum sambac) were separated from the infusion by adsorption to Porapak Q resin. Among the 66 compounds identified by GC and GC/MS, linalool (floral), methyl anthranilate (grape-like), 4-hexanolide (sweet), 4-nonanolide (sweet), (E)-2-hexenyl hexanoate (green), and 4-hydroxy-2,5-dimethyl-3(2H)-furanone (sweet) were extracted as potent odorants by an aroma extract dilution analysis and sensory analysis. The enantiomeric ratios of linalool in Jasmine tea and Jasminum sambac were determined by a chiral analysis for the first time in this study: 81.6% ee and 100% ee for the (R)-(−)-configuration, respectively. The Jasmine tea flavor could be closely duplicated by a model mixture containing these six compounds on the basis of a sensory analysis. The omission of methyl anthranilate and the replacement of (R)-(−)-linalool by (S)-(+)-linalool led to great changes in the odor of the model. These two compounds were determined to be the key ...
Akio Sugimoto - One of the best experts on this subject based on the ideXlab platform.
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Sedative effects of the Jasmine tea odor and (R)-(−)-linalool, one of its major odor components, on autonomic nerve activity and mood states
European Journal of Applied Physiology, 2005Co-Authors: Kyoko Kuroda, Naohiko Inoue, Akio Sugimoto, Takami Kakuda, Kikue Kubota, Tohru FushikiAbstract:We investigated the effects of the odor of Jasmine tea on autonomic nerve activity and mood states in a total of 24 healthy volunteers. We used the odor of Jasmine tea at the lowest concentration that could be detected by each subject but that did not elicit any psychological effects. R–R intervals and the POMS test were measured before and after inhalation of the odors for 5 min. Both Jasmine tea and lavender odors at perceived similar intensity caused significant decreases in heart rate and significant increases in spectral integrated values at high-frequency component in comparison with the control ( P < 0.05). In the POMS tests, these odors produced calm and vigorous mood states. We also examined the effects of ( R )-(−)-linalool, one of its major odor components, at the same concentration as in the tea, and ( S )-(+)-linalool. Only ( R )-(−)-linalool elicited a significant decrease in heart rate ( P < 0.05) and an increase in high-frequency component in comparison with the controls, and produced calm and vigorous mood states. Thus, the low intensity of Jasmine tea odor has sedative effects on both autonomic nerve activity and mood states, and ( R )-(−)-linalool, one of its components, can mimic these effects.
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sedative effects of the Jasmine tea odor and r linalool one of its major odor components on autonomic nerve activity and mood states
European Journal of Applied Physiology, 2005Co-Authors: Kyoko Kuroda, Naohiko Inoue, Akio Sugimoto, Takami Kakuda, Kikue Kubota, Tohru FushikiAbstract:We investigated the effects of the odor of Jasmine tea on autonomic nerve activity and mood states in a total of 24 healthy volunteers. We used the odor of Jasmine tea at the lowest concentration that could be detected by each subject but that did not elicit any psychological effects. R–R intervals and the POMS test were measured before and after inhalation of the odors for 5 min. Both Jasmine tea and lavender odors at perceived similar intensity caused significant decreases in heart rate and significant increases in spectral integrated values at high-frequency component in comparison with the control (P < 0.05). In the POMS tests, these odors produced calm and vigorous mood states. We also examined the effects of (R)-(−)-linalool, one of its major odor components, at the same concentration as in the tea, and (S)-(+)-linalool. Only (R)-(−)-linalool elicited a significant decrease in heart rate (P < 0.05) and an increase in high-frequency component in comparison with the controls, and produced calm and vigorous mood states. Thus, the low intensity of Jasmine tea odor has sedative effects on both autonomic nerve activity and mood states, and (R)-(−)-linalool, one of its components, can mimic these effects.
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Autonomic nervous responses according to preference for the odor of Jasmine tea.
Bioscience Biotechnology and Biochemistry, 2003Co-Authors: Naohiko Inoue, Kyoko Kuroda, Akio Sugimoto, Takami Kakuda, Tohru FushikiAbstract:The effect of Jasmine tea odor on the autonomic nervous system was investigated by a power spectral analysis of the heart rate variability. We assigned eight volunteers to two groups with either a predilection for or antipathy toward the Jasmine tea odor. We tested both high- and low-intensity Jasmine tea odors. The low-intensity odor was produced by diluting 20-fold the Jasmine tea used for the high-intensity odor test. The low-intensity odor produced an increase in parasympathetic nervous activity in both the predilection and antipathy groups. The high-intensity odor produced an increase in parasympathetic nervous activity in the predilection group, but an increase in sympathetic nervous activity in the antipathy group. The odor of Chinese green tea, a basic ingredient of Jasmine tea, produced no effects similar to those of the Jasmine tea odor. These results suggest that the Jasmine tea odor activated the parasympathetic nerve, whereas the higher-intensity odor activated the sympathetic nerve in those ...
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identification of potent odorants in chinese Jasmine green tea scented with flowers of jasminum sambac
Journal of Agricultural and Food Chemistry, 2002Co-Authors: Akio Sugimoto, Takami Kakuda, Kikue KubotaAbstract:The odorants in Chinese Jasmine green tea scented with Jasmine flowers (Jasminum sambac) were separated from the infusion by adsorption to Porapak Q resin. Among the 66 compounds identified by GC and GC/MS, linalool (floral), methyl anthranilate (grape-like), 4-hexanolide (sweet), 4-nonanolide (sweet), (E)-2-hexenyl hexanoate (green), and 4-hydroxy-2,5-dimethyl-3(2H)-furanone (sweet) were extracted as potent odorants by an aroma extract dilution analysis and sensory analysis. The enantiomeric ratios of linalool in Jasmine tea and Jasminum sambac were determined by a chiral analysis for the first time in this study: 81.6% ee and 100% ee for the (R)-(−)-configuration, respectively. The Jasmine tea flavor could be closely duplicated by a model mixture containing these six compounds on the basis of a sensory analysis. The omission of methyl anthranilate and the replacement of (R)-(−)-linalool by (S)-(+)-linalool led to great changes in the odor of the model. These two compounds were determined to be the key ...
N. Gouda - One of the best experts on this subject based on the ideXlab platform.
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Scientific goals of Nano-Jasmine
Proceedings of the International Astronomical Union, 2012Co-Authors: Yoshiyuki Yamada, N. Gouda, Yukiyasu Kobayashi, Sho Fujita, Takuji Hara, Ryoichi Nishi, Satoshi Yoshioka, Shunsuke HozumiAbstract:AbstractNano-Jasmine is an ultrasmall Japanese satellite (with a weight of 35 kg), designed to carry out an astrometric mission. The target accuracy is 3 milliarcseconds (mas) for stars brighter than magnitude 7.5 at zw-band wavelengths of 0.6–1.0 μm. The observational strategy is the same as that of Gaia and Hipparcos. The time span of 20 years since the Hipparcos mission will enable us to update the proper motion data obtained at that time. With the help of these updated measurements, we expect that some stars will be resolved into multiple stars. In addition, taking advantage of the small primary mirror (with a diameter of 5 cm), we can measure bright stars which cannot be observed with Gaia because of saturation limits. The core data reduction for the Nano-Jasmine mission will use Gaia's Astrometric Global Iterative Solution (agis). A collaboration between the Gaiaagis and Nano-Jasmine teams was initiated in 2007.
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Series of Jasmine missions
Eas Publications Series, 2011Co-Authors: N. GoudaAbstract:We are planning three space astrometry missions as a series of Jasmine missions; Nano-Jasmine, Small-Jasmine and (Medium-sized)Jasmine. Jasmine is an abbreviation of Japan Astrometry Satellite Mission of INfrared Exploration. The Jasmine mission will measure in an infrared band annual parallaxes, positions on the celestial sphere, and proper motions of many stars in the bulge of the Milky Way (the Galaxy) with high accuracies. A target launch date is the first half of the 2020s. Before the launch of Jasmine, we are planning Nano-Jasmine and Small-Jasmine. Nano-Jasmine uses a very small nano-satellite and it is determined to be launched in 2011. Small-Jasmine is a downsized version of the Jasmine satellite, which observes toward restricted small regions of the Galactic bulge. A target launch date is around 2016. A completely new “map” of the Galactic bulge given by Small-Jasmine and Jasmine will bring us many exciting scientific results.
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Jasmine: Infrared Space Astrometry Mission
Transactions of The Japan Society for Aeronautical and Space Sciences Space Technology Japan, 2010Co-Authors: N. GoudaAbstract:Jasmine is an astrometry satellite mission that measures in an infrared band annual parallaxes, positions on the celestial sphere, and proper motions of stars in the bulge of the Milky Way (the Galaxy) with high accuracies. These measurements give us 3-dimensional positions and 2-dimensional velocities (tangential velocities) of many stars in the Galactic bulge. A completely new “map” of the Galactic bulge given by Jasmine will bring us many exciting scientific results. A target launch date is the first half of the 2020s. Before the launch of Jasmine, we are planning two other missions; Nano-Jasmine and Small-Jasmine. Nano-Jasmine uses a very small nano-satellite and it is determined to be launched in 2011. Small-Jasmine is a downsized version of Jasmine satellite which observes toward restricted small regions of the Galactic bulge. These satellite missions need severe stability of the pointing of telescopes and furthermore high stability of telescope structures to measure stellar positions with high accuracies. This fact requires severe control of the pointing of telescopes and thermal control in payload modules. The control systems are very important keys for success of space astrometry missions including the series of Jasmine missions.
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Nano-Jasmine: current status and data output
Proceedings of SPIE, 2010Co-Authors: Yukiyasu Kobayashi, Nobutada Sako, N. Gouda, Taihei Yano, Yoshiyuki Yamada, Yoshito Niwa, Jyunpei Murooka, Shinichi NakasukaAbstract:The current status of the Nano-Jasmine project is reported. Nano-Jasmine is a very small-sized (50 cm cubic form) satellite that is expected to carry out astrometric observations of nearby bright stars. The satellite will determine distances of more than 8000 stars by performing annual parallax measurements, which is the only direct method to measure the distance of an astronomical object. The mission is required to continue for more than two years to obtain reliable annual parallax measurements. In addition, Nano-Jasmine will serve as a preliminary to the main Jasmine mission. We expect that Nano-Jasmine will be launched in August 2011 from the Alcantara Space Center in Brazil using the Cyclone-4 rocket.
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Infrared space astrometry project Jasmine
Proceedings of the International Astronomical Union, 2007Co-Authors: N. Gouda, Yasuhiro Yamada, Y. Kobayashi, T. YanoAbstract:AbstractA Japanese plan of an infrared (z-band:0.9 μas or k-band:2.2 μas) space astrometry (Jasmine-project) is introduced. Jasmine (Japan Astrometry Satellite Mission for INfrared Exploration) will measure distances and tangential motions of stars in the bulge of the Milky Way. It will measure parallaxes, positions with an accuracy of 10 μas and proper motions with an accuracy of 10 μas/year for stars brighter than z=14 mag or k=11 mag. Jasmine will observe about ten million stars belonging to the bulge component of our Galaxy. With a completely new “map” of the Galactic bulge, it is expected that many new exciting scientific results will be obtained in various fields of astronomy. Presently, Jasmine is in a development phase, with a targeted launch date around 2016. Science targets, preliminary design of instruments, observing strategy, critical technical issues in Jasmine and also Nano-Jasmine project are described in this paper.
