Chemical Composition of the Essential Oils from Bogwood of<i>Cryptomeria japonica</i>D. Don

Narita, Hiroe; Yatagai, Mitsuyoshi; Ohira, Tetsuya

doi:10.1080/10412905.2006.9699388

Cited by 24 publications

(9 citation statements)

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“…In the last decade, Narita and Yatagai have published several studies focusing on the organic components contained in umoregi woods excavated in Japan. [2][3][4][5][6] Fe is enriched, to varying degrees, in umoregi wood, 6 but no studies are available on the chemical state of Fe in umoregi wood except for two reports using 57 Fe-Mössbauer spectroscopy. 7,8 In addition, there is little scientific information about the ash made from umoregi wood.…”

Section: Introductionmentioning

confidence: 99%

Mössbauer Spectroscopic Characterization of Iron in Ashes Made from the Ancient Woods Excavated in the Foothills of Mt. Chokai

Yamauchi

Kurimoto

Sakai

2017

Journal of Nuclear and Radiochemical Sciences

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2. Experimental 2.1. Umoregi wood and soil samples. The sample ashes were made from umoregi woods excavated from Nikaho City in Akita Prefecture, Japan, located to the northwest of Mt. Chokai (Figure 1) in 2015. Umoregi wo ods were the stems of trees buried by large-scale landslides from Mt. Chokai ca. 2500 years ago. 9, 10 The material umoregi woods were Japanese oak (Quercus serrata or Quercus crispula), Japanese chestnut (Castanea crenata), Japanese cedar (Cryptomeria japonica), and Japanese zelkova (Zelkova serrata). "Japanese" is hereinafter abbreviated as "Jpn." such as Jpn. cedar. These umoregi woods were divided into two groups based on their color. One group looked brown or dark green, and the other group showed black. The former contained Jpn. cedar and Jpn. zelkova umoregi woods, and the latter, Jpn. chestnut and Jpn. oak umoregi woods. After removing soil and bark, the umoregi woods were dried indoors at ambient temperature for several months, and then cut into ca. 5 cm square blocks. Soil was collected at the excavation site of a Jpn. zelkova umoregi tree. The soil was ground in a mortar after air-drying. 2.2. Aqueous solution including Fe 2+ and Fe 3+. Aqueous Fe 2+ and Fe 3+ solution was prepared using Fe(NH 4) 2 (SO 4) 2 • 6H 2 O and FeNH 4 (SO 4) 2 • 12H 2 O. Fe 2+ /Fe 3+ ratio and total Fe concentration in this solution were 3/7 and 2 w/w%, respectively. Special-grade Fe compounds were purchased from Wako Pure Chemical Industries, Ltd. and used without further purification.

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Section: Introductionmentioning

confidence: 99%

Mössbauer Spectroscopic Characterization of Iron in Ashes Made from the Ancient Woods Excavated in the Foothills of Mt. Chokai

Yamauchi

Kurimoto

Sakai

2017

Journal of Nuclear and Radiochemical Sciences

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“…This plant has been cultivated as an important coniferous tree species in Taiwan since 1906. Phytochemical investigations indicated the presence of monoterpenoids, sesquiterpenoids, and diterpenoids [2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24] in the leaves, heartwood, and barks of C. japonica . The crude extracts and secondary metabolites from this species exhibited a wide array of bioactivities including cytotoxic [23], antifungal [24], antibacterial [23], antioxidant [25], anti-inflammatory [26], and insect antifeedant [27] and repellent [18] properties.…”

Section: Introductionmentioning

confidence: 99%

Bioactive Dimeric Abietanoid Peroxides from the Bark of Cryptomeria japonica

Chang

Chen

et al. 2019

Molecules

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Three new dimeric abietane-type diterpenoids, abieta-6,8,11,13-tetraen-12-yl 12-hydroxyabieta-8,11,13-trien-7α-yl peroxide (1), abieta-6,8,11,13-tetraen-12-yl 12-hydroxyabieta-8,11,13-trien-7β-yl peroxide (2), and 12-hydroxyabieta-8,11,13-trien-7β-yl 7-oxoabieta-5,8,11,13-tetraen-12-yl peroxide (3), together with four known abietane-type diterpenoids (4–7) were isolated from the methanol extract of the bark of Cryptomeria japonica. Their structures were elucidated on the basis of spectroscopic analysis and comparison of NMR data with those of known analogues. At a concentration of 50 μM, compounds 1, 2, and 3 showed 26.2%, 23.6%, and 35.7% inhibition towards xanthine oxidase enzyme, respectively. In addition, compound 3 also showed 24.9% inhibition toward angiotensin-converting enzyme (ACE).

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“…In the last decade, Narita and co-workers have used chemical approaches to examine the essential oils contained in umoregi wood excavated in Japan. [1][2][3][4][5] However, these studies did not discuss the wood coloring mechanisms.…”

Section: Introductionmentioning

confidence: 99%

Mössbauer Characterization of Iron in Ancient Buried Trees Excavated from the Foothills of Mt. Chokai

Yamauchi

Kurimoto

Sakai

2017

Journal of Nuclear and Radiochemical Sciences

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Chemical Composition of the Essential Oils from Bogwood ofCryptomeria japonicaD. Don

Cited by 24 publications

References 1 publication

Mössbauer Spectroscopic Characterization of Iron in Ashes Made from the Ancient Woods Excavated in the Foothills of Mt. Chokai

Mössbauer Spectroscopic Characterization of Iron in Ashes Made from the Ancient Woods Excavated in the Foothills of Mt. Chokai

Bioactive Dimeric Abietanoid Peroxides from the Bark of Cryptomeria japonica

Mössbauer Characterization of Iron in Ancient Buried Trees Excavated from the Foothills of Mt. Chokai

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