著者

松原 聡 Satoshi MATSUBARA

出版者

京都府立大学学術報告委員会

雑誌

京都府立大学学術報告 理学・生活科学 (ISSN:0075739X)

巻号頁・発行日

no.37, pp.p91-99, 1986-11

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サイトカイニン活性をもつ多くのプリン誘導体は, 人間の細胞培養において抗腫瘍作用など重要な生理作用を持っていることが知られている。一方, このような物質は種々の食品材料植物に, サイトカイニンあるいはtRNAの微量塩基として含まれていることが報告されている。本研究では, たけのこの煮汁に含まれているサイトカイニンについて, n-ブタノール分画, イオン交換樹脂カラム, セファデクスカラムを用いて分画し, 植物培養細胞の増殖を生物検定として調べた。その結果, たけのこの煮汁には数種のサイトカイニンが含まれていることがわかった。そのうちの水溶性サイトカイニンを, さらにペーパークロマトグラフィー, バリウム沈殿, 酵素分解などによって調べた結果, たけのこの煮汁に含まれている水溶性サイトカイニンはゼアチンのリボチドであると考えられる。煮汁には約20μMのゼアチンリボチドに匹敵する活性が含まれていることがわかった。

著者

SATOSHI MATSUBARA KOZO NAGASHIMA

出版者

Japan Association of Mineralogical Sciences

雑誌

Mineralogical Journal (ISSN:05442540)

巻号頁・発行日

vol.7, no.6, pp.513-525, 1975 (Released:2008-03-18)

参考文献数

15

被引用文献数

5 5

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Orthoericssonite, BaMn2+2Fe3+ [O|OH|Si2 O7], hitherto reported only from the Långban mine, Sweden, was found in a jacobsite-bearing rhodonite-aegirine-tephroite ore from the Hijikuzu mine, Iwate Prefecture, as a product of strong thermal metamorphism due to granitic intrusion. It is orthorhombic, space group Pmmn, a0=20.30Å, b0=6.986Å, c0=5.387Å, Z =4. Wet chemical analysis by K. N. gives the empirical formula (Ba0.688Sr0.256K0.024Na0.013Li0.003)0.984(Mn1.4352+Fe0.5462+Mg0.086)2.067(Fe0.9313+Ti0.093Al0.034)1.058Si2.062 O7.000(O1.389(OH)0.611)2.000 as O=9, specifying it as a strontian and ferroan variety. It is optically biaxial positive, 2V about 50°, r ?? v strong, ns α=1.802, β=1.840, γ=1.888; strongly pleochroic, X=yellowish brown, Y=reddish brown, and Z=dark brown.

著者

Satoshi MATSUBARA Ritsuro MIYAWAKI Kazumi YOKOYAMA Masaaki SHIMIZU Hiroyuki IMAI

出版者

一般社団法人日本鉱物科学会

雑誌

Journal of Mineralogical and Petrological Sciences (ISSN:13456296)

巻号頁・発行日

vol.99, no.6, pp.363-367, 2004 (Released:2005-01-07)

参考文献数

19

被引用文献数

3 9

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Tokyoite, Ba2Mn3+(VO4)2(OH), the Mn3+-analogue of gamagarite, is found from the Shiromaru mine, Okutama, Tokyo, Japan. It is monoclinic, P21/m, a = 9.10(4), b = 6.13(2), c = 7.89(5) Å, β = 112.2(5)°, Z = 2. The strongest lines in the powder X-ray diffraction pattern are 3.73 (15) (111), 3.31 (100) (112), 3.08 (20) (020), 3.00 (16) (301, 212, 102), 2.90 (19) (120), 2.80 (62) (121, 300), 2.16 (18) (321), 1.963 (15) (204). Electron microprobe analysis gave V2O5 31.77, SiO2 0.15, Al2O3 0.07, Fe2O3 2.33, Mn2O3 11.27, CaO 0.07, BaO 51.91, SrO 0.22, Na2O 0.13, H2O (calc.) 1.59, total 99.51 wt. %, and lead to the empirical formula, (Ba1.92Na0.02Sr0.01Ca0.01)Σ1.96(Mn3+0.81Fe3+0.17Al0.01)Σ0.99[(V1.99Si0.01)O7.92](OH)1.00 on the basis of V + Si = 2 and (OH) = 1. It is translucent and black red in color with a vitreous luster. The streak is dark brownish red and cleavage is not observed. The Mohs' hardness is about 4 to 4.5. The calculated density is 4.62 g/cm3. It has distinct pleochroism, from reddish orange to dark brownish red in thin section and the calculated mean refractive index is 2.03. It occurs as irregular grains under 15 μm, and the aggregates are up to 250 μm wide in association with braunite, hyalophane and tamaite. The mineral is formed under the later stage activity of low grade metamorphism.

著者

Hidemichi HORI Toshinori Kobayashi Ritsuro MIYAWAKI Satoshi MATSUBARA Kazumi YOKOYAMA Masaaki SHIMIZU

出版者

一般社団法人日本鉱物科学会

雑誌

Journal of Mineralogical and Petrological Sciences (ISSN:13456296)

巻号頁・発行日

vol.101, no.4, pp.170-177, 2006 (Released:2006-08-08)

参考文献数

23

被引用文献数

4 8

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Iwashiroite-(Y), YTaO4, was found from Suishoyama, Kawamata Town, Fukushima Prefecture, Japan. It is monoclinic, P2/a, a = 5.262(5) Å, b = 5.451(5) Å, c = 5.110(5) Å, β = 95.12(10)°, V = 146.0(2) Å3, Z = 2. The five strongest lines in the powder XRD pattern [d(Å), I/I0, hkl] are (3.13, 100, 111), (2.95, 94, 111), (2.73, 26, 020), (1.890, 29, 220) and (1.862, 29, 022). Electron microprobe analysis gave; Y2O3 29.10, Ce2O3 0.10, Nd2O3 0.10, Sm2O3 0.36, Gd2O3 1.06, Tb2O3 0.25, Dy2O3 2.38, Ho2O3 0.56, Er2O3 2.09, Tm2O3 0.37, Yb2O3 3.33, Lu2O3 0.85, ThO2 0.02, UO2 0.15, CaO 0.17, Ta2O5 40.64, Nb2O5 16.66, TiO2 0.41, total 98.60 wt%, and leads to the empirical formula, (Y0.81Yb0.05Dy0.04Er0.03Gd0.02Lu0.01Ho0.01Sm0.01Ca0.01Tm0.01)Σ1.00(Ta0.58Nb0.39Ti0.02)Σ0.99O4 on the basis of the 4 oxygen atoms per formula unit. Iwashiroite-(Y) is translucent and amber brown to brown in color with a glassy to subadamantine luster. The streak is pale brown and cleavage is {010} good, {001} poor. The Mohs' hardness is 6. The calculated density is 7.1 g/cm3. Iwashiroite-(Y) occurs as an aggregate of small euhedral platy crystals with a metamict substance in the main ore body of the granite pegmatite mine at the locality. Associated minerals are quartz, microcline and annite. The crystal structure was refined to R = 0.034 with single crystal XRD data. Although the structure consists of TaO6 octahedra and YO8 polyhedra, iwashiroite-(Y) is not isostructural with fergusonite-beta-(Y).