巻号一覧
24 巻, 4 号
選択された号の論文の15件中1～15を表示しています
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(第5報)各種酸化細菌のグルコース及びグルコン酸酸化酵素に就て池田 庸之助1950 年 24 巻 4 号 p. 147-150
発行日: 1950年
公開日: 2008/11/21
ジャーナル フリーGlucose and gluconic acid oxidases of three types of oxidative bacteria were studied by Zunberg method.
(1) A. suboxydans, which oxidizes glucose to gluconic acid and gluconic acid to 5-ketogluconic acid, has powerfull glucose oxidase, and the gluconic acid oxidase appeares later.
(2) Ps. gluconicum, which oxidizes glucose to gluconic acid, has glucose oxidase but not so active as A. suboxidans. The gluconic acid oxidase is absent.
(3) Ps. f luorescens, which oxidizes glucoses to gluconic acid and glucnoic acid to 2-ketogluconic acid, has powerfull gluconic acid oxidase, but the glucose oxidase is very poor.
(4) Glucose and gluconic acid oxidase of S. marcescens, which oxidizes glucose to 2-ketoglu-conic acid by submerged culture, are not detectable. Author thinks that oxidases of this bacteria ate not so constitutive as others.抄録全体を表示PDF形式でダウンロード (290K) -
(第6報)酸化細菌の分類池田 庸之助1950 年 24 巻 4 号 p. 151-152
発行日: 1950年
公開日: 2008/11/21
ジャーナル フリーAs the result of studies on Pseudomonas and Serratia, the author concludes as follows:
(1) Some of them have oxidative activities, but they are very low as compared with Aceto-bacter and Gluconobacter.
(2) Their activities are very variable and often disappear. This sugests that these are not so constitutive as that of Acetobacter and Gluconobacter.
(3) Their biological characteristics are very different from Acetobacter and Gluconobacter, these are easily detectable.
(4) It is better to call them as “Pseudooxidative bacteria” when their oxidative characteristics are discussed.抄録全体を表示PDF形式でダウンロード (168K) -
(第4報) Penicillium屬菌類の分類學的位置に就て(その2)-Asymmetrica Type大政 正隆, 河田 弘, 永島 明子1950 年 24 巻 4 号 p. 153-157
発行日: 1950年
公開日: 2008/11/21
ジャーナル フリー(1)東北地方の各種森林土壌から分離したPenicidllium麗菌類中Asymmetrica Typeに屬する菌の分類學的位置を決定した.
(2) Velutina-divaricataのP. rubrum-dide BIOTIRGE, Lanata-divaricataのP. janthinellum BIOURGE 5f. spc., FasciculataのP. cyclopiumWESTLINGは分布も廣く,又豊富に見出され絲状菌群落中主要な地位を占めるものと思われる.
終りに臨み終始懇篤な指導を賜つた東大農學部坂口謹一郎教授に深甚の識意を表する.抄録全体を表示PDF形式でダウンロード (490K) -
(第2報) Asp. 屬黴の液體麹による酒精醗酵試驗富金原 孝, 吉田 弘, 澁谷 光雄1950 年 24 巻 4 号 p. 157-160
発行日: 1950年
公開日: 2008/11/21
ジャーナル フリー(1)液體麹を糖化剤とし單用する液麹法に於ては黄麹菌より黒麹菌の方が酒精の醗酵率が良く,菌株を選撰する場合に單に糖化力,液化力を塩菌株の價値を決定することは困難であり,必ず酒精醗酵によつて酵素の總合的な作用を見ることが必要である.尚マルターゼと酒精醗酵は何等がの関係がある様に思われる.
(2) 糖濃度10%程度の醪に於ては特定の糖化條件を必要とせず,醪に對して10%程度の液體麹酒母液を添加して,安全なろ併行複式醗酵により酒精を生産せしめる事が出來る.
(3) 第1報により酵素力價のみを以て選擇した菌株中榊Ssp. awamorivar.fumeus,醸試「い」, Asp lnuii-0436は酒精の牧量が良く大體實用菌株としての價値がある.
本研究中有益な御指導を賜つた東大農學部坂降,朝井兩先生に感意を表します.尚研究費は至國合成清酒協會より多大の補助を頂きました事を感謝致します.抄録全体を表示PDF形式でダウンロード (373K) -
(第3報)酵母による混濁性の比較研究と粘質物の電子顯微鏡的所見貝原 友次郎1950 年 24 巻 4 号 p. 160-164
発行日: 1950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 (1898K) -
(第4報)酵母による混濁性の比較研究と粘質物の電子顯微鏡的所見(續き)貝原 友次郎1950 年 24 巻 4 号 p. 165-166
発行日: 1950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 (192K) -
中井 武文, 稲葉 泰1950 年 24 巻 4 号 p. 167-169
発行日: 1950年
公開日: 2008/11/21
ジャーナル フリー(1) Concerning differances of the enzyme activities of the leaves occupying differient positions on the start, we note that the activites of amylase and peroxidase are higher as their positions on the stalk are lower, but the activities of invertase and catalase are higher as their positions on the stalk are higher.
(2) After topping the activities of amylase, invertase, and peroxidase lowered temporarily, but those of topped tobacco became higher than those of non-topped tobacco at the ripening-stage. As for the activity of catalase, non-topped tobacco showed always higher activity than topped tobacco.
(3) Concerning the changes of the enzyme activities of leaf tobacco at the ripening-stage in a day, we note, that activities of amylase and invertase are highest at 12 p.m., and lowest, at 1 p.m. The activity of catalase is highest at 6 a.m., and decreases gradually. The activity of peroxidase is lowest at 6 a.m., and becomes higher gradually.
(4) The activities of amylase and peroxidase of leaf tobacco are higher as the ripeness pro-ceeds, while the activities of invertase and catalase are dower as the ripeness proceeds.抄録全体を表示PDF形式でダウンロード (288K) -
中井 武文, 稻葉 泰1950 年 24 巻 4 号 p. 170-171
発行日: 1950年
公開日: 2008/11/21
ジャーナル フリー(1) Generally speaking, amylase activity of leaf tobacco becomes high in the process of flue curing, but it becomes lower temporarily at the middle stage. However, after flue curing it is about three times high than before flue curing.
(2) Invertase activity of leaf tobacco in the process of flue curing becomes higher than before flue curing, but becomes lower temporarily at the last stage. However, after flue curing, the activity remains simlar as before flue curing.
(3) Catalase activity of leaf tobacco in the process of flue curing becomes high at the early stage, but it becomes obviously lower at the last stage. However, after flue curing it decreases less than one third when compared with the activity before flue curing.
(4) Peroxidase activity of leaf tobacco in the proccess of flue curing becomes high at the early stage, but it becomes obviously lower at the last stage. However, after flue curing it decreases less than one tenth when compared with the activity before flue curing.抄録全体を表示PDF形式でダウンロード (179K) -
(第3報)埋藏間における醗酵經過並に成分の變化に就て (2)須藤 浩1950 年 24 巻 4 号 p. 171-176
発行日: 1950年
公開日: 2008/11/21
ジャーナル フリーThe author has ensiled hairy vetches, chickweeds, unused leaves of cabbages and chinese milk-vetches and estimated organic acids and pH values of the silage made. observing carefully changes during the preparation of silage.
When Vicia with lower content of moisture (71%) is ensiled under the suitable pressure, free lactic acid in the silage will be increased to about 1% in a week. The so-called mature state of silage was observed in about 10 days after the ensiling.
It has seemed to him that the formation of lactic acid to this level will prevent butyric acid fermentation, in the silage. The result obtained in present investigation will be regarded as a type of fermentation and of nutritional loss in the good silage.
When mineral acid is added to the material at the time of ensiling, progress to the stable state of silage seems to be rapidly promoted within a week.抄録全体を表示PDF形式でダウンロード (523K) -
佐橋 佳一, 角田 利孝1950 年 24 巻 4 号 p. 176-177
発行日: 1950年
公開日: 2008/11/21
ジャーナル フリーSeveral methods of preparing Ca-D-lactobionate have already been found by many investigators, but few of them appear to be so simple as the authors'. The authors present a new simple method, which enables us to obtain the product in higher yield and purity (yield 80.8%, bromine 0.27%), by using sodium bicarbonate as a preventing agent against the decomposition of lactose in the bromine-oxidation.抄録全体を表示PDF形式でダウンロード (179K) -
鳥井 秀一, 古谷 弘三1950 年 24 巻 4 号 p. 178-181
発行日: 1950年
公開日: 2008/11/21
ジャーナル フリー(1)ベーパークロマトグラフィによる茶葉タンニンの分離方法を設定するために,展開剤の選定,展開温度,展開剤の含水量について試驗した。展開されたタンニンは硫酸第二鐵によつて呈色させた.
(2) その結果,茶葉タンiニンには供試した7種の溶剤の中,η一ブタノールの水飽和液が最も好結果を示した.
(3) この方法によつて茶樹品種C-8, U-17,藪北の3種の茶葉タンニンの比較を行つたが,藪北は他の2種しとはタンニンの組成が違うことが分つた.抄録全体を表示PDF形式でダウンロード (341K) -
山崎 何惠, 上田 誠之助1950 年 24 巻 4 号 p. 181-185
発行日: 1950年
公開日: 2008/11/21
ジャーナル フリー(1) 黒麹アミラーゼが黄麹-及び麥芽-アミラーゼに比し生澱粉の糖化に特に強く作用する.
(2) 黒麹アミラーゼの各種澱粉に對する糖化の難易を比較し,その難易が澱粉構造と關係があるらしい事を推定した.
終りに臨み,澱粉資料を惠與された中澤亮治博士,岩田久敬教授,福本壽一郎博士に感謝の意を表す.抄録全体を表示PDF形式でダウンロード (384K) -
中村 定市, 芦田 淳1950 年 24 巻 4 号 p. 185-187
発行日: 1950年
公開日: 2008/11/21
ジャーナル フリーAmino acids were prepared by shaking an aqueous solution of ammonia and pyruvic acid or levulinic acid in the presence of Raney nickel at room temperature. The formation of amino acids is due to the action of hydrogen absorbed in Raney nickel. As the results, alanine and γ-aminovaleric acid were obtained respectirely.
One of the author's(10) has reported previously that ammonium formate is decomposed into hydrogen, ammonia and carbon dioxide, when heated in the presence of Raney nickel. Using this hydrogen, amino acids were prepared from keto acids. Namely, an aqueous solution containing ammonium salts of keto acid and formic acid was boiled in the presence of Raney nickel. Alanine was also obtained in this case.抄録全体を表示PDF形式でダウンロード (239K) -
三井 哲夫, 田中 穰1950 年 24 巻 4 号 p. 188-190
発行日: 1950年
公開日: 2008/11/21
ジャーナル フリーThe authors have contrived an improved method for the Pregl's micro nitrogen determinati-on (micro-Dumas). This method has been used for the analysis of a number of organic compounds and has given satisfactory results for about ten years in our laboratory.
The plan and elevation of our apparatus are shown in the figure. The main improved points are as follows:
(1) The special azotometer (Az2) was newly designed in order to examine the remaining air easily.
(2) A copper boat was contrived for combusting the substance.
(3) In the combustion tube, copper-oxid layer was increased than Gysel's and reduced-copper gauzes were used in two layers.
It takes about 50_??_55 minutes for one analysis, and the error is within ±0.2% as the table shows.抄録全体を表示PDF形式でダウンロード (272K) -
(第1報) Esperinの性状並に構成物質に就て小川 洋, 伊藤 定一郎1950 年 24 巻 4 号 p. 191-196
発行日: 1950年
公開日: 2008/11/21
ジャーナル フリーThe chemical nature and components of esperin, which is a newly isolated antibiotic produced by a variety of B. mesentericus, have been studied and a liquid fatty acid, dl-leucine, l-aspartic acid and l-valine were isolated as its components, and identified through their derivatives. It was also determined by the paper chromatography that esperin (or esperin X) contained only these three amino acids and did not contain other amino acids.
Esperin X which has been derived from esperin as crystalline form by alkali has lower melting point, less toxicity and less antibacterial property against M. tuberculosis than esperin.抄録全体を表示PDF形式でダウンロード (471K)
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