巻号一覧
25 巻, 3 号
選択された号の論文の18件中1～18を表示しています
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(第2報)カタラーゼ作用力の増加減少の機構に就て高杉 直幹, 山崎 勇夫1951 年 25 巻 3 号 p. 113-115
発行日: 1951年
公開日: 2008/11/21
ジャーナル フリーWhen moisture, air, and warmth are sufficient, catalase activity in wheat grains increases independently of germination. Under these conditions, catalase, in wheat grain without embryo except scutellum, increases linearly with time. In such cases Q10 is=2.8_??_3.0 in the temperature range of 13°_??_23°C.
From the studies of the localization of catalase, it is assumed that scutellum and aleutone layer have important role in the formation of catalase.抄録全体を表示PDF形式でダウンロード (251K) -
高杉 直幹, 齋藤 恒行, 渡邊 靜雄1951 年 25 巻 3 号 p. 115-118
発行日: 1951年
公開日: 2008/11/21
ジャーナル フリーThe potato protein was obtained as a by-product of the starch production from potato tuber. Its yield was about 0.23 per cent of fresh potatoes.
The nutritional values of this potato protein were researched for rats. It was found that the potato protein supplemented with a small amount of the herring milt protein gave a very good effect on the growth of young rats. This effect was due to the high contents of arginine and the appetite promoting properties attributable to the herring milt protein. It was also shown that adult rats could support themselves sufficiently with a diet containing potato protein as the single protein source.抄録全体を表示PDF形式でダウンロード (366K) -
中村 道徳, 山崎 鏡次, 戸田 久昭1951 年 25 巻 3 号 p. 119-121
発行日: 1951年
公開日: 2008/11/21
ジャーナル フリーThe distribution df phosphorylase, phosphatase, and β-amylase in fruits, vegetables (except root vegetables), and some leaves was examined. Fruits contained little or no enzyme activities. But chestnut and gingko, which contained large amounts of strch were rich in phosphorylase activities. Almost all vegetables and leaves, except onion, showed more or less phosphorylase activities and little or no β-amylase activities, which suggested that phosphorylase might take part in the formation of assimilation starch as well as reserve starch in plants.抄録全体を表示PDF形式でダウンロード (234K) -
平 友恒, 大和谷 三郎, 藤井 繁弘1951 年 25 巻 3 号 p. 121-123
発行日: 1951年
公開日: 2008/11/21
ジャーナル フリーHORNE and POLLARD(1) reported a paper strip chromatography using 3% ammonium, chloride as a developing agent for identification of streptomycin. Allied methods were announced for separation of enzymes or proteins on the filter paper strips. We improved this method using 3% NaCl instead of ammonium chloride for chromatography of several antibiotics(2). We applied this method further for amino acids, pigments and vitamins.
Formerly this phenomenon was considered as salting out, but recently ELTON(4) and RUTTER(5), declared it due to the streaming potential when the salt solution flows through the capillary channel of paper.
1) Rf values of natural amino acids by the salt solution: The procedure is almost the same as ordinary paper partition chromatography of amino acids with the use of NaCl as developer instead of organic solvents. (Table 1) It may be noted that the Rf values of most amino acids are about 0.9, whereas tyrosine, tryptophan and histidine have dferent Rf values.
2) Rf values of pigments: It is convenient that all pigments show spots directly of their own colors on the paper. The pH of the NaCl solution we used was 5.3. (Table 2). It may be seen that all these pigments have specific Rf values.
3) Rf values of vitamins B1 and B2 and folic acid: Vitamins B1 and B2 and folic acid indicate specific Rf values by this procedure. (Table 3).
4) Double spots of lysine picrate and lysine flavinate: Lysine picrate and lysine flavianate show double spots by this method as in Table 4.抄録全体を表示PDF形式でダウンロード (275K) -
(第11報)白鼠の酵素山藤 一雄, 黒澤 雄一郎1951 年 25 巻 3 号 p. 123-125
発行日: 1951年
公開日: 2008/11/21
ジャーナル フリーPDF形式でダウンロード (272K) -
(第12報)キシランの抽出竝びに消化稲岡 惠, 中郷 慶雄1951 年 25 巻 3 号 p. 125-127
発行日: 1951年
公開日: 2008/11/21
ジャーナル フリーPDF形式でダウンロード (305K) -
(第2報) Theanine近縁化合物の合成橋爪 斌1951 年 25 巻 3 号 p. 127-130
発行日: 1951年
公開日: 2008/11/21
ジャーナル フリーPreviously, the authors reported two synthetic methods of theanine starting from L-glutamic acid. According to these methods, the author synthesized L-aspartic acid β-ethylamide and L-glutamic acid γ-methylamide as the related compounds of theanine, and determined Rf values of these amides in paper partition chromatography, since such studies may be helpful in knowing the distribution of these amide in nature.抄録全体を表示PDF形式でダウンロード (372K) -
(第4報)ハルニレ材hemicelluloseの組成及び構造に就て(其の2)館 勇, 山森 昇1951 年 25 巻 3 号 p. 130-135
発行日: 1951年
公開日: 2008/11/21
ジャーナル フリーHemicellulose prepared from Elm wood, Ulmus Davidiana Planch. var. japonica NAKAI, yields the glycosides of 2, 3-dimethyl xylose and 2- or 3-monomethyl xylose in the approximate molecular ratio 8:1 upon methanolysis of the methyl ether derivative.
Accordingly, it seems evident that, in the original hemicellulose, wherin eight molecules of xylose are associated with one residue of xylogluconic acids, the xylose residues consist of two types one combines with the adjacent residues C1 and C4 and the other has only one hydroxyl group situated in C2 or C3 and combines through the three positions of C1, C4 and C2 or C3 with other residues, and that the molecular ratio of the former to the latter is 8 to 1 approximately.
It appears that only β-xylose residues are concernd in this hemicellulose, since the specific rotation of the hemicellulose (-96.0°) is analogous to that of β-mehyl xyloside (-67°) but very different from that of α-methyl xyloside(+153°).抄録全体を表示PDF形式でダウンロード (620K) -
(第2報)糯米澱粉中のアミロース及びアミロぺクチンの分別と含有量の測定井上 吉之, 小野寺 幸之進1951 年 25 巻 3 号 p. 135-140
発行日: 1951年
公開日: 2008/11/21
ジャーナル フリー(1) 糯米澱粉中には,少量ではあるが,アミロースの存在することを確認した.また品種の異る米澱粉から得られたアミロース及びアミロペクチンは,それぞれ呈色度の差異があることが認められた.
(2) 數品種の米澱粉について,アミロース及びアミロペクチンの割合を,原澱粉,アミロース及びアミロペクチンの呈色度の測定結果から算出した.
(3) ヨード電位差滴定法は,少くとも糯米澱粉の場合には,不適當であることを述べた.
(4) 各品種の米から得られた米澱粉,アミロース及びアミロペクチンの呈色度に差異が見られる原因について考察し,且つ呈色度の測定によつてその等の含量を知ろうとする場合に注意すべき事柄について述べた.
供試品の入手について御援助を賜はつた京都大學教授榎本中衞博士,京都學藝大學反田嘉博氏並びに本實驗に援助された農學士大西俊夫氏に深謝の意を表する.抄録全体を表示PDF形式でダウンロード (547K) -
(第2報)胞子濃度と耐熱時間の關係に就て天羽 幹夫, 坂口 謹一郎1951 年 25 巻 3 号 p. 140-144
発行日: 1951年
公開日: 2008/11/21
ジャーナル フリー(1) Bac. natto及びB. megatheriumの胞子を用い1cc中1×102個からl×10〓個に至る各胞子濃渡(N)の耐熱時間(t分)につき調べた.
(2) 兩者の間には一般に次式の關係が成立する.
log10N=a+b log10 t (a, bは恒數)
この關係は100°に於ても95°に於ても成立し,燐酸鹽緩衝液中で加熱する場合のみでなく,肉汁中で加熱する場合にも成立する.但し上式中の恒數a, bは,菌株,加熱温度,加熱液の性質等により變化する.
(3) 燐酸緩衝液中で加熱する場合の95°に於ける耐熱時間は100°の耐熱時間と比較すると各胞子濃度につき, B. nattoでは約4倍, B. megatheriumでは約2.5倍であつた.
(4) 胞子濃度の増大と共に耐熱時間の増大する原因を抵抗力の個體差によるものとする從來の説が不當であることを明らかにし,加熱時の胞子の死滅を物理化學的現象として解析すべきであることを述べた.抄録全体を表示PDF形式でダウンロード (441K) -
I. アルカリ性溶液におけるビタミンB1に就て館 勇, 小出 眞次1951 年 25 巻 3 号 p. 145-149
発行日: 1951年
公開日: 2008/11/21
ジャーナル フリーVitamin B1 showed three kinds of polarographic waves in alkaline media: (1) the unstable cathodic wave at negative potential as nearly -2.0 V. vs. N. C. E., (2) the catalytic wave of BRDICKA in usual cobalt buffer, and (3) the anodic wave with the half wave potintial of -0.439V. vs. N. C. E. (pH 11.0). These waves were eliminated by the reaction with monoiodoacetic acid. By the air oxidation, the anodic wave changed to two separate waves, one anodic and one cathodic, and also catalytic wave was eliminated. From these observations we pointed out that vitamin B2 converts to its SH-form in the alkaline media of pH above 9.0. Consequently, the percentage of the formations of SH-form at different pH was graphically calculated from the heights of the anodic waves in buffered solutions. In cobalt buffer, the catalytic wave was observed even with acidic medium as pH 4.0 and its shape was perfectly identical with that apearing in alkaline media. But a difference was found that the heights of maxima decreased gradually until almost zeor in 150 minutes at pH 10.6 and 9.6, while a little decreasing was observed in the first 30 minutes but its height was kept constant after then at pH 3.0 and 8.5.抄録全体を表示PDF形式でダウンロード (536K) -
(第7報)攪拌通氣培養に就て坂口 謹一郎, 古坂 澄石, 高橋 甫1951 年 25 巻 3 号 p. 150-152
発行日: 1951年
公開日: 2008/11/21
ジャーナル フリーRh. G. 36, the lactic acid former, produces a large amount of lactic acid under strong aeration and agitation, and considerable production of fumaric acid along with lactic acid is also confirmed. In the mixed culture of Rh. G. 36 and Rh. G. 34 the fumaric acid former, it is found that a larger amount of fumaric acid compared with that of lactic acid is obtained.抄録全体を表示PDF形式でダウンロード (318K) -
大津 隆, 服部 雅子1951 年 25 巻 3 号 p. 152-156
発行日: 1951年
公開日: 2008/11/21
ジャーナル フリー1. 七リシンゾルの凍結分離を試み物理化學的に特性をもつ二つの含窒素フラクションを得た.
2. 其一は融解により可逆的に水に溶解する可溶性フラクションで吸濕性強く, 6.92%の窒素を含む.
3. 其二は難溶性フラクションで16.48%の窒素を含み,低温凍結により繊維状に不可逆的に再生されたものである.
4. 凍結分離法による兩フラクションは,凍結温度-30°乃至-80°.融解温度一定の時同一ゾルに就ては定量的に分離される.抄録全体を表示PDF形式でダウンロード (1113K) -
田村 悌一, 久山 眞平1951 年 25 巻 3 号 p. 156-158
発行日: 1951年
公開日: 2008/11/21
ジャーナル フリーIn the course of study of furyl ketone derivatives as contact insecticides, it has become desirable to prepare completely pure α-naphthyl methyl ketone (I). Thereby, in this paper, we report the preparation of (I) from α-naphthaldehyde (II) and diazomethane according to the Arndt-Eistert reaction.
The synthesis of this compound was reported by many authors, but we found no literature on the behavior of diazomethane towards (II).
Depending on the Arndt-Eistert reaction, the scheme of synthetic reaction may be expressed as in Fig. 1.
This reaction yields in the first step a pyarzole derivative, but this intermediate compound is unstable and decomposes very easily eliminating nitrogen. It may be converted into three condensation products (ketone, ethylene oxide or homologous aldehyde).
Therefore, (II) was kept in diazomethane ether solution at room temperature until nitrogen evolution ceased. (I) and ethlyene oxide derivative could be isolated from the mixture of reaction products by treatment with saturated NaHSO3 solution.
(I) was separated by distillation, showing b. p.7mm 154°, and it was identified as the semicarbazone of mp. 209°. From the crystalline addition compounds of NaHSO3, the unreacted (II) and a neutral substance were liberated by means of Na2CO3. The neutral crystalline substance thus obtained is colorless prism, melts at 140_??_141° and the deduced empirical formula is C13H12O2.抄録全体を表示PDF形式でダウンロード (267K) -
(第23報) Gibberellinの化學構造(其の4)薮田 貞治郎, 住木 諭介, 麻生 清1951 年 25 巻 3 号 p. 159-160
発行日: 1951年
公開日: 2008/11/21
ジャーナル フリーIn the previous papers1)2)3) of this series the authors reported that the nucleus of gibberic acid, C17H21•CO•COOH, must be fluorene (I) and also assumed that the, side chains of gibberic acid might be attached to the 4th and 5th carbons of fluorene nucleus and the nucleus would be hydrated partially.
By treating gibberic acid with manganese dioxide, an acid, m. p. 191_??_192°, is obtained as prisms. This acid is identified as hemimelli_??_ic acid (II) by the mixed m. p. with the authentic compound which is prepared from acenaphthene (III) by oxidizing with potassium permanga nate.
This fact that hemimelli_??_ic acid has beenob-ained from gibberic acid endorse cha. one of the positions of side chains attched to the mother nucleus must be the 5 th carbon a_??_om of fluorene and the mother nucleus of gibberic acid i.e. fluorene must have one benzene ring and one partially hydrated benzene ring.抄録全体を表示PDF形式でダウンロード (180K) -
市川 親文1951 年 25 巻 3 号 p. 160-161
発行日: 1951年
公開日: 2008/11/21
ジャーナル フリーAnalyses of ash of various kinds of flowers are given in Tables 1 and 2.抄録全体を表示PDF形式でダウンロード (150K) -
(第12報)ペーパー・クロマトグラフィーの油脂分析への應用井上 吉之, 野田 万次郎1951 年 25 巻 3 号 p. 161-165
発行日: 1951年
公開日: 2008/11/21
ジャーナル フリーA new method for the qualitative analysis of fats has been devised by using paper chromatography. The method employed involves the oxidative decomposition of fat by potassium permanganate in the acetone solution, esterification of the acidic oxidation products, preparation of their hydroxamic acid derivatives, and final paper chromatographic separation of these acids. [Cf. INouYE and NODA: This Journal, 23, 294, 368 (1950); 24, 291, 295 (1951)] The hydroxamic acids prepared from the oxidation products of each fat give a characteristic chromatogram, in which the appearance of spots differs from that of other fats, because the amount and kind of the lower carboxylic acids produced by oxidation are restricted within specific range according to each, on account of the peculiarity of structures and proportions of the component fatty acids of original fat.
It seems that this method can be utilized for the qualitative analysis of fats as a new interesting method.抄録全体を表示PDF形式でダウンロード (479K) -
(第9報)基質との結晶に關する考察白川 正治1951 年 25 巻 3 号 p. 166-171
発行日: 1951年
公開日: 2008/11/21
ジャーナル フリーThe MICHAELIS constant of catalase-H2O2 system was determined by both methods, MICHAILIS-MENTEN'S and LINEWEA.VER-BURK'S, as 0.15 and 0.35 mole at 0.5°C respectively and the validity of the latter value was postulated. The MICHAELIS constant decreases with ascension of temperature. The heat of dissociation of the intermediate compound was calculated as 3, 100 cal./mole, which was compared with the apparent activation energy, 3, 700 cal./mole between 0.5 and 10.5°C. It was conclusively discussed that the MICHAELIS' theory, in opposition to CHANCE's opinion, was also valid to the catalase-H2O2 system.抄録全体を表示PDF形式でダウンロード (520K)
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