Toshinori Nakagawa
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View article: Analysis of fatty acid composition of refined emu oils produced in different regions
Analysis of fatty acid composition of refined emu oils produced in different regions Open
View article: Effects of volatile sesquiterpenes from Japanese cedarwood on visual processing in the human brain: an event-related potential study
Effects of volatile sesquiterpenes from Japanese cedarwood on visual processing in the human brain: an event-related potential study Open
Odor environments in living spaces can influence human physiological and psychological states. To elucidate the effect of volatile organic compounds (VOCs) of wood in living spaces on the modulations of cognitive processing, we built two e…
View article: Supplementary Material for: Fetal growth velocity according to the mode of assisted conception
Supplementary Material for: Fetal growth velocity according to the mode of assisted conception Open
Introduction: Pregnancies conceived through assisted reproductive techniques (ART) are on the rise worldwide and have been associated with a higher risk of placental related disease in the third trimester. Objective: To compare fetal growt…
View article: Supplementary Material for: Fetal growth velocity according to the mode of assisted conception
Supplementary Material for: Fetal growth velocity according to the mode of assisted conception Open
Introduction: Pregnancies conceived through assisted reproductive techniques (ART) are on the rise worldwide and have been associated with a higher risk of placental related disease in the third trimester. Objective: To compare fetal growt…
View article: Supplementary Material for: Fetal growth velocity according to the mode of assisted conception
Supplementary Material for: Fetal growth velocity according to the mode of assisted conception Open
Introduction: Pregnancies conceived through assisted reproductive techniques (ART) are on the rise worldwide and have been associated with a higher risk of placental related disease in the third trimester. Objective: To compare fetal growt…
View article: Supplementary Material for: Fetal growth velocity according to the mode of assisted conception
Supplementary Material for: Fetal growth velocity according to the mode of assisted conception Open
Introduction: Pregnancies conceived through assisted reproductive techniques (ART) are on the rise worldwide and have been associated with a higher risk of placental related disease in the third trimester. Objective: To compare fetal growt…
View article: Physiological and Psychological Effects of Volatile Organic Compounds from Dried Common Rush (Juncus effusus L. var. decipiens Buchen.) on Humans
Physiological and Psychological Effects of Volatile Organic Compounds from Dried Common Rush (Juncus effusus L. var. decipiens Buchen.) on Humans Open
This study compared the participants’ physiological responses and subjective evaluations of air scented with different concentrations of common rush (Juncus effusus L. var. decipiens Buchen.) (30 g and 15 g, with fresh air as a control). W…
View article: ISOLATION AND QUANTIFICATION OF THE PLANT GROWTH REGULATOR 1-TRIACONTANOL FROM MOSO BAMBOO (Phyllostachys pubescens) SHOOT SKIN AND ITS COMPOST
ISOLATION AND QUANTIFICATION OF THE PLANT GROWTH REGULATOR 1-TRIACONTANOL FROM MOSO BAMBOO (Phyllostachys pubescens) SHOOT SKIN AND ITS COMPOST Open
To investigate chemical uses of Moso bamboo (Phyllostachys pubescens) shoot skin, we identified the main component of non-polar solvent extracts.To this end, a white precipitate from n-hexane extracts was evaluated using silica-gel column …
View article: Effects and interaction of different interior material treatment and personal preference on psychological and physiological responses in living environment
Effects and interaction of different interior material treatment and personal preference on psychological and physiological responses in living environment Open
View article: The Effect of Eucalyptol on Nursing Home Residents
The Effect of Eucalyptol on Nursing Home Residents Open
Eucalyptol is one of the most popular volatile components. It is used in many essential oils for relieving sinus and lung congestion caused by a variety of conditions. This pilot study sought to analyze clinical evidence for the effect of …
View article: Effect of Geothermal Drying Treatment on Extract Composition of Sugi (<i>Cryptomeria japonica</i>) Board
Effect of Geothermal Drying Treatment on Extract Composition of Sugi (<i>Cryptomeria japonica</i>) Board Open
スギ板材の人工乾燥方法のひとつに，地熱を利用した地熱乾燥がある。本研究では，地熱乾燥によるスギ板材中の揮発成分含量への影響を調査するため，地熱乾燥・中温乾燥・高温乾燥・天然乾燥に供したスギ板材から切削面 （仕上面） を作製し，その酢酸エチル抽出成分をガスクロマトグラフ質量分析計 （GC/MS） で分析した。その結果，21のピークが検出され，このうち16ピークが同定できた。全ピークの総面積を比較すると乾燥方法間で有意差は認められなかったが，β- Caryophllene，Th…
View article: The Effect of Eucalyptol on Nursing Home Residents
The Effect of Eucalyptol on Nursing Home Residents Open
Eucalyptol is one of the most popular volatile components used in many essential oils for relieving sinus and lung congestion caused by variety of conditions. This pilot study aims to analyze clinical evidence of the effect of the scent of…
View article: α-Glucosidase Inhibitory Activity of Resin From Sakhalin fir Tree (<i>Abies sachalinensis</i>) and its Bioactive Compounds
α-Glucosidase Inhibitory Activity of Resin From Sakhalin fir Tree (<i>Abies sachalinensis</i>) and its Bioactive Compounds Open
This study investigated in vitro the α-glucosidase inhibitory activity of resin from the Sakhalin fir tree ( Abies sachalinensis). The resin showed extremely high activity (IC 50 of 17.3 µg/mL). We isolated 8 compounds from the resin and i…
View article: Supplementary data - Supplemental material for α-Glucosidase Inhibitory Activity of Resin From Sakhalin fir Tree (<i>Abies sachalinensis</i>) and its Bioactive Compounds
Supplementary data - Supplemental material for α-Glucosidase Inhibitory Activity of Resin From Sakhalin fir Tree (<i>Abies sachalinensis</i>) and its Bioactive Compounds Open
Supplemental material, Supplementary data, for α-Glucosidase Inhibitory Activity of Resin From Sakhalin fir Tree (Abies sachalinensis) and its Bioactive Compounds by Toshinori Nakagawa, Ahmed Ashour, Yhiya Amen, Yurie Koba, Koichiro…
View article: A new aliphatic ester of hydroxysalicylic acid from fermented Carica papaya L. preparation with a potential hair growth stimulating activity
A new aliphatic ester of hydroxysalicylic acid from fermented Carica papaya L. preparation with a potential hair growth stimulating activity Open
An aliphatic ester of hydroxysalicylic acid (6), reported for the first time from a natural source in addition to five known compounds were isolated from the fermented Carica papaya L. preparation, a commercialized functional…
View article: Effect of Heat Drying Treatment on Extracts of Sugi (<i>Cryptomeria japonica</i>) Board
Effect of Heat Drying Treatment on Extracts of Sugi (<i>Cryptomeria japonica</i>) Board Open
中温乾燥がスギ板材中のテルペン類に与える量的影響を検討するため，減圧乾燥・蒸気加熱式乾燥・電気加熱式乾燥・天然乾燥に供したスギ板材の抽出成分をガスクロマトグラフ質量分析計 （GC/MS） で分析した。板材を3切削面 （粗材面・仕上面・材中層面） に分けて評価した結果，天然乾燥材に比べ，GC/MSで検出された成分の総量は減圧乾燥材の全切削面で少ないこと，セスキテルペン炭化水素は減圧乾燥材の全切削面，蒸気加熱式乾燥材の粗材面と仕上面，電気加熱式乾燥材の粗材面で少ないこと，含酸素…
View article: Analysis of Volatile Compounds and Their Seasonal Changes in Rooms Using Sugi (<i>Cryptomeria japonica</i>) Wood Boards as Interior Materials
Analysis of Volatile Compounds and Their Seasonal Changes in Rooms Using Sugi (<i>Cryptomeria japonica</i>) Wood Boards as Interior Materials Open
木材を用いた家の価値が見直されている中で,木材から放散される揮発性成分の機能性が注目されている。季節ごとの温度や湿度の変化の大きい我が国においては,木材から放出される揮発性成分も大きく変化していると考えられる。本研究では,スギ(Cryptomeria japonica)の無垢材を内装に用いた建物(A棟)と,表面に塗装を施された内装材またはビニールクロスで覆われた内装材を用いた建物(B棟)の室内において,年間を通して揮発性成分を定期的に捕集し,ガスクロマトグラフ質量分析計(G…
View article: Biological Activities of Extracts from Different Parts of <i>Cryptomeria japonica</i>
Biological Activities of Extracts from Different Parts of <i>Cryptomeria japonica</i> Open
Cryptomeria japonica is one of the most important forest tree species in Japan. To increase the demand for domestic timber, broad uses related to the functional attributes of C. japonica must be developed. Several studies have examined the…
View article: Determination of Seed Soundness in Conifers Cryptomeria japonica and Chamaecyparis obtusa Using Narrow-Multiband Spectral Imaging in the Short-Wavelength Infrared Range
Determination of Seed Soundness in Conifers Cryptomeria japonica and Chamaecyparis obtusa Using Narrow-Multiband Spectral Imaging in the Short-Wavelength Infrared Range Open
Regeneration of planted forests of Cryptomeria japonica (sugi) and Chamaecyparis obtuse (hinoki) is the pressing importance to the forest administration in Japan. Low seed germination rate of these species, however, has hampered low-cost p…
View article: In vitro bioactivities and phytochemical profile of various parts of the strawberry (Fragaria × ananassa var. Amaou)
In vitro bioactivities and phytochemical profile of various parts of the strawberry (Fragaria × ananassa var. Amaou) Open