巻号一覧
28 巻, 1 号
選択された号の論文の23件中1～23を表示しています
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(第8報)ω, ω'-Bis-(3, 4-dihydroxyphenyl) Alkane類の抗酸化性田村 三郎, 大熊 和彦1954 年 28 巻 1 号 p. 1-4
発行日: 1954年
公開日: 2008/11/21
ジャーナル フリーTo find the relation between the antioxidant activity and the chemical structure, several ω, ω'-bis-(3, 4-digydroxyphenyl) alkanes have been prepared(3). In this work the activity of these compounds was examined through the Acitve Oxygen Method using fresh lard as the substrate. The results of experiments were shown in Table 1, and were summarized as follows:
(1) The activities of most of the ω, ω'-bis-(3, 4-dihydroxyphenyl) alkanes tested were ap-proximately equal or superior to that of NDGA.
(2) Among these compounds α, δ-bis-(3, 4-dihydroxyphenyl) butane was most effective and an increase or decrease of the carbon chain between the two phenyl groups led the activity to lower potency.
(3) It, is noteworthy to point out that the introduction of methyl groups into the carbon chain between the two phenyl groups of ω, ω'-bis-(3, 4-dihydroxyphenyl) butane lowered its antioxidant activity.
The authors wish to express their appreciation to Professor Dr. Y. SUMIKI for his guidance and advice.抄録全体を表示PDF形式でダウンロード (404K) -
(第9報) 4-Alkyl Catechol類の抗酸化性田村 三郎, 大久保 秀, 金田 洸1954 年 28 巻 1 号 p. 4-8
発行日: 1954年
公開日: 2008/11/21
ジャーナル フリーIt had been demonstrated(1) that some ω, ω'-bis-(3, 4-dihydroxyphenyl) alkanes, particularly butane, pentane and hexane, have remarkable antioxidant properties. In relation to this fact several 4-alkyl catechols, shown in Table 1, were prepared and their activities were examined to seek further light upon the relationship. between the antioxidant property and chemical structure. To compare their activities, Active Oxygen Method was applied using fresh lard as the substrate. The results of the experiments were shown in Table 1 and were summarized as follows.
(1) Introduction of an alkyl group into the 4-position of the catechol nucleus made a great enhancement of activity.
(2) Among the 4-alkyl catechols, ethylcatechol is most active, propylcatechol the next and activity of the other 4-alky catechols decreased with the increase of the length of the side chain.
(3) It was noteworthy to point out that the structures of 4-ethyl-- and propylcatechols cor-responded to one half of those of ω, ω'-bis-(3, 4-dihydroxypenyl) butane and hexane respecti-vely.
(4) Introduction of an acyl group into the 4-position of the nucleus reduced the antioxdant activity of catechol.
(5) 4-Butyl and amylcatechols had a violent vesicant property and an increase or decrease of the length of the side chain leads the activity to lower potency.
The authors wish to express their appreciation to Professor Dr. Y. SUMIKI for his guidance and advice.抄録全体を表示PDF形式でダウンロード (551K) -
(第4報)リボフラビン生成前駆物質の確認友枝 幹夫, 小幡 彌太郎1954 年 28 巻 1 号 p. 8-10
発行日: 1954年
公開日: 2008/11/21
ジャーナル フリーIt was described in our 3 rd paper that in the butyl-acetonic fermentation by Clostridium aceictutylicum 243, the precursors of biosynthetic riboflavin included in the soybean flake were contained in both the acidic and basic amino acid groups of its hydrolyzate.
According to the fermentation tests in this report with the pure amino acids instead of the hydrolyzate, it was confirmed that both glutamic acid (or aspartic acid) and arginine were the precursors of riboflavin-biosynthesis and phytin was not the precursor but was effective to remove the Fe ion which had an inhibiting action for synthesis of riboflavin.抄録全体を表示PDF形式でダウンロード (311K) -
(第3報)グリセリン酸化機構について大塚 謙一1954 年 28 巻 1 号 p. 11-15
発行日: 1954年
公開日: 2008/11/21
ジャーナル フリーAbout the glycerol-oxidation by Bact. succinicum SAKAGUCHI et TADA, the following results were obtained by an experiment using dried cells or extract fronr ground cells.
1. Inorganic phosphate was required for glycerol-oxidation and this phosphorylation was de-monstrated as the so-called “oxidative phosphorylation”
2. The first metabolite of the phosphorylation was α-glycerophosphoric acid.
3. While a small amount of dioxyacetone was obtained as an other product of glycerol-oxi-dation.
4. Mainly, glycerol was oxidized to carbon dioxide by the TCA-cycle.抄録全体を表示PDF形式でダウンロード (485K) -
(第3報)酸素圧の影響及び銅イオン存在下の自酸化の過程のアスコルビン酸に依る阻害伊藤 正春, 安部 道夫1954 年 28 巻 1 号 p. 15-20
発行日: 1954年
公開日: 2008/11/21
ジャーナル フリー(1) The effect of low oxygen tension on the inhibition of sweet potato β-amylase caused by ascorbic acid plus Cu++ and the inhibition by the same inhibitor in its different stage of autoxidation were studied.
(2) Under low oxygen tension, the inhibition by Cu+ survived longer than under aerobic condition and the inhibition of the irreversible type was less serious. (Fig. 1 and Table 1).
(3) The intersection of curves, which showed the course of inhibition, as it was illustrated in Figures 5 to 7 in Part 1 of this series, was the effect of condition when the oxygen tension was rate-determining for the autoxidation of ascorbic acid.
(4) Under the present experimental condition (pH 5.6 and 2_??_3°), the inhibition by Cu+ survived for several hours even after the complete disappearance of titratable ascorbic acid. (Curve 4 in Fig. 2 and Curve 2 in Fig. 3)
(5) The probable cause of the inhibition of the irreversible type was an oxidation of -SH group of enzyme. From the data presented in Figures 2 and 3, it might be concluded that another mechanism of oxidation must be present in addition to the oxidation by the autoxidation product of ascorbic acid (probably by H2O2).抄録全体を表示PDF形式でダウンロード (635K) -
佐々木 林治郎, 津郷 友吉, 藤巻 正生, 岡 智1954 年 28 巻 1 号 p. 20-24
発行日: 1954年
公開日: 2008/11/21
ジャーナル フリーFluorometric determination of riboflavin in milk products by electronic photofluorometer was studied.
The conditions for photolysis.of riboflavin in milk products were examined(Table 1_??_7), and both from quantities of riboflavin added to deproteinized solution of milk products and from readings measured after photolysis, regression line was obtained by the application of methods of least squares (Table 8).
Obtained regression coefficients in different kinds of milk products were shown in Table 9.
Mean regression coefficient and estimated error with 5% of significant level obtained from measured samples of 188 were found to be 171.800 and 3.59. So the relation between reading in photofluorometer _??_ and content of riboflavin Y was shown by the next equation.
_??_=Y/171.800=0.582072Y
From the results of experiments, our method of determination of riboflavin in milk products by electronic photofluorometer is presented in this paper, and it was found to be well available for its determination.
Contents of riboflavin in some Japanese milk products were also determined (Table 10).抄録全体を表示PDF形式でダウンロード (538K) -
(第10報)魚類肝油中のビタミンAに対するカテコール誘導体の抗酸化性田村 三郎, 大熊 和彦, 大久保 秀1954 年 28 巻 1 号 p. 24-28
発行日: 1954年
公開日: 2008/11/21
ジャーナル フリーIn the previous papers(1)(2)(3), it was demonstrated that the compounds, shown in Table 1, possessed remarkable antioxidant activities against the oxidative deterioration of lard. In the present paper, the effectiveness of these compounds for stabilizing vitamin A in fish liver oil was evaluated from the standpoint of the practical application. The antioxidants to be tested were incorporated into fish liver oil containing a definite quantity of vitamine A in concentrations of 0.05 and 0.10% and were stored at 24°. At regular intervals, vitamin A destruction was determined by the use of Beckman spectrophotometer. The results of experiments were shown in Table 1 and were summerized as follows.
(1) Though the ω-(3, 4-dihydroxyphenyl) butyric and caproic esters had a remarkable atitioxidant activity for the deterioration of lard, they were proved to be less effective for sta-bilizing vitamin A in fish liver oil.
(2) The activities of most of the ω, ω'-bis-(3, 4-dihydroxyphenyl) alkanes were approxi-mately equal or superior to that of NDGA. Among the compounds tested, α, δ-bis-(3, 4-dihydroxyphenyl) butane was most effective and α, ε-bis-(3, 4-dihydroxyphenyl) pentane and a, ζ-bis-(3, 4-dihydroxyphenyl) hexane ranked to the next.
(3) Among the 4-alkyl catechols, ethylcatechol was most effective and the activities of other two alkyl catechols decreased with an increase of the side chain.
The authors wish to express their appreciation to Professor Dr. Y. SUMIKI for his guidance and advice.抄録全体を表示PDF形式でダウンロード (460K) -
(第11報) ω-(2, 5-Dihysroxyphenyl) Alkanoic Esters及びω, ω'-Bis-(2, 5-Dihysroxyphenyl) Alkanesの合成大熊 和彦, 田村 三郎1954 年 28 巻 1 号 p. 28-33
発行日: 1954年
公開日: 2008/11/21
ジャーナル フリーIn the previous papers(1)(2)(3) it was reported that several ω-(3, 4-dihydroxyphenyl) alkanoic esters and ω, ω'-bis-(3, 4-dihydroxyphenyl) alkanes were prepared and were found to have marked antioxydant activities.
In the present paper, therefore, synthesis of ω-(2, 5-dihydroxyphenyl) alkanoic esters and ω, ω'-bis-(2, 5-dihydroxyphenyl) alkanes, the isomers of above compounds, were undertaken to search more effective antioxydants.
1) The synthesis of methyl γ-(2, 5-dihydroxyphenyl) butyrate (V): β-(2, 5-Dimethoxyphenyl) propionic acid (I) prepared by the treatment of hydroquinone dimethyl ether with succinic anhydride in the presence of AlCl3, was demethylated with HI to give β-(2, 5-dihydroxybenzoyl) propionic acid (IV). This was then reduced to γ-(2, 5-dihydroxyphenyl) butyric acid (III) by the CLEMENSEN reduction and was then esterified.
2) The synthesis of methyl ε-(2, 5-dihydroxyphenyl) caproate (XIII): Hydroquinone dimethyl ether was condensed with polymeric adipic anhydride in the presence of AlCl3 to give δ-(2, 5-dimethoxybenzoyl) valeric acid (VIII). This acid was reduced by the CLEMENSEN reduction to give ε-(2, 5-dimethoxyphenyl) caproic acid (X). The demethylation of (X) with HI gave ε-(2, 5-dihydroxyphenyl) caproic acid (XI), which was esterified in the usual way.
3) The synthesis of 1, 6-bis-(2, 5-dihydroxyphenyl) hexane (XIV): Two moles of hydroquinone dimethyl ether were condensed with one mole of adipyl chloride in the presence of AlCl3 to give 1, 4-bis-(2, 5-dimethoxybenzoyl) butane (IX), which was reduced by WOLF-KISNER method to 1, 6-bis-(2, 5-dimethoxyphenyl) hexane (XIII) and was then demethylated.
4) The synthesis of 1, 10-bis-(2, 5-dihydroxyphenyl) decane (XVII): This compound was prepared in 'the same way as in (XIV), using sebacoyl chloride and hydroquinone dimethylether as starting materials.
The antioxydant activities of these compounds will be discussed in the following paper.
The authors wish to express their appreciation to Professor Dr. Y. SUMIKI for his guidance and advice.抄録全体を表示PDF形式でダウンロード (552K) -
(第1報)ペーパークロマトグラフによる糖類の検索鳥井 秀一, 金沢 純1954 年 28 巻 1 号 p. 34-38
発行日: 1954年
公開日: 2008/11/21
ジャーナル フリー茶葉炭水化物を8フラクションに分別し,各フラクションの構成糖類を二次元反覆展開クロマトグラムにより検索し,遊離糖としてglucose, fructose, sucrose,未詳のoligosaccharide 2,配糖体構成糖として, glucose, rhamnose, galactose, arabinose,水溶性多糖類構成糖としてglucose, galactose, arabinose, xylose,mannose, rhamnose, galacturonic acid,未詳のウロン酸4,核酸構成糖としてribose, desoxyribose,ヘミセルロース溝成糖としてglucose, galactose, arabinose, xylose, rhamnose, fructose, glucuronic acid,及びその他未詳のウロン酸を検出した.抄録全体を表示PDF形式でダウンロード (426K) -
(第1報)内地米及び外地米澱粉の諸性質比較福場 博保1954 年 28 巻 1 号 p. 38-41
発行日: 1954年
公開日: 2008/11/21
ジャーナル フリーThe Japanese rice, which belongs to Oryza sativa L. japonica, and the rice which belongs mainly to Oryza sativa L. indica showed the same contents of moisture, ash, crude fat, crude protein, and crude carbohydrate. The starches of the Burmese, Siamese, and Californian rites showed greater affinity for iodine and they produced the aqueous paste with greater specific viscosity than the Japanese rice starch. The starch of Rikuu No. 132 (produced mainly in the northern Japan) probably contains the amylopectin which had the long terminal glucose chain.抄録全体を表示PDF形式でダウンロード (426K) -
(第2報)内地米及び外地米のアミログラム福場 博保1954 年 28 巻 1 号 p. 41-43
発行日: 1954年
公開日: 2008/11/21
ジャーナル フリーThe Brabender's amylograph was used for comparing the viscocity of the non-glutinous and glutinous Japanese rices, which mainly belong to Oryza sativa L. japonica, and the Burmese, Siamese, and other rices which belong to Oryza sativa L. indica. The glutinous rice had lower gelatinating temperature than the non-glutinous rice. Generally speaking, the rice of indica type showed the highest Brabender Unit and the glutinous Japanese rice showed the lowest. It is assumed from these results that the amylose content of the starch separated from the rice of japonica type or/and the terminal glucose chain of amylopectin of the former starch is longer than that of the latter.抄録全体を表示PDF形式でダウンロード (242K) -
(第23報)Agroclavineの分解反応阿部 又三1954 年 28 巻 1 号 p. 44-47
発行日: 1954年
公開日: 2008/11/21
ジャーナル フリーIn the alkali fusion of dihydroagroclavine (II), a small amount of methylamine has been obtained, but the formation of such a substance as naphthalene derivative could not be confirmed. On the other hands, oxalic acid and an acid, C14H11O0N, have been isolated from the nitric acid oxidation of agroclavine (I). Titration of the latter acid has shown it to be dibasic and it has been found to contain an N-methyl group. On distillation with soda-lime, this acid has been found to yield β-methylquinoline (IV) together with methylamine and an acid (mp. 216_??_24°). It appears probable, therefore, that the dibasic acid is a quinoline derivative and possibly an 1, 3-dimethylquinoline betaine dicarboxylic acid, for which (III) is a possible formula. Moreover, it has been found that there is no difference between pH values of agroclavine and dihydroagroclavine hydrochloride solutions. The fact makes it probable that the easily reducible double bond in agroclavine must be located at position between carbon atoms s 8 and 9. These findings will support the proposed formula (I) for agroclavine.抄録全体を表示PDF形式でダウンロード (469K) -
(第7報)麹菌糖化酵素の精製と性質(その1)岡崎 浩1954 年 28 巻 1 号 p. 48-51
発行日: 1954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 (1149K) -
(第8報)麹菌糖化酵素の精製と性質(その2)岡崎 浩1954 年 28 巻 1 号 p. 51-56
発行日: 1954年
公開日: 2008/11/21
ジャーナル フリー1. Partially purified preparation of the saccharogenic amylase of Aspergillus oryzae was isolated from Takadiastase. The principle of the method: Takadiastase solution is saturated completely with ammonium sulfate ahd the dialyzed supernatant is attacked with 1_??_2% HgCl2 at 30° for one or two days. Other enzymes are destroyed completely and only the saccharogenic enzyme remains.
2. The followings are some properties observed on the preparation:
(1) The saccharogenic activity is always associated with maltase activity and these are not separated each other by any methods so far tested.
(2) Optimum pH: 4.2_??_5.2 (Fig. 1, Part 2).
(3) Optimum temperature: 50_??_55° (Fig. 2, Part 2).
(4) Stable between pH 3.8_??_6.5, most stable at pH 5.2 (Table 1, Part 2). It is destroyed completely at that pH within 10 minutes at 70° Calcium ions appear to have an unfavourable influence upon the stability. (Table 2, Part 2)
(5) All of the following substances have no inhibitive or activating actions: HgCl2, CuSO4, Pb(CH3COO)2, FeSO4, AgNO3, ZnSO4, MgSO4, MnSO4, CaCl2, BaCl2, NaCl, NaF, KCl, KCN, phenol, streptomycin, chloromycetin, phenylhydrazine.
(6) The enzyme is not precipitated by trichloroacetic acid, phosphomolybdic acid, phosphotungstic acid, picric acid and tannic acid.
(7) 70_??_80% of its activity remains in the supernatant when the enzyme solution is saturated with ammonium sulfate. (Table 3, Part 2)
(8) Molecular weight: 7500_??_8000 by Northrop-Anson's diffusion method.
(9) Electrophoresis shows that the preparation yet contains two components (Photo 1, Part 1), perhaps the one may be a polysaccharide composed of glucose and xylose and the other may be a polypeptide containing tryptophan, arginine, isoleucine, valine, glutamic acid, lysine and one more that is not yet certained.
(10) Maximum absorption is at 278 mμ by Beckman Spectrophotometer. (Fig. 3, Part 2)
3. As it is shown above, the enzyme is not prepared in a pure state yet. However, these properties suggest us that the enzyme may be a very different one from other enzymes so far reported on its action and chemical compositions.
Further purification is following now.抄録全体を表示PDF形式でダウンロード (1288K) -
(第2報)遊離脂肪酸の組成に就て辻野 勇1954 年 28 巻 1 号 p. 56-59
発行日: 1954年
公開日: 2008/11/21
ジャーナル フリーThe constituents of the free fatty acids of the cuttle-fish oil, obtained from the dark oil by the method reported in previous paper, are as follows.
1) The free fatty acids contain about 31.1% solid acids and about 68.9% liquid acids.
2) Acids of the saturated saries are C14H28O2, C16H32O2, C18H36O2, C20H40O2 and C22H44O2.
3) Acids of the oleic series are C16H30O2, C18H34O2, C20H35O2 and C22H42O2.
4) Acids of the polyunsaturated series are C18H30O2, C18H26O2, C20H32O2, C22H36O2 and C22H34O2.抄録全体を表示PDF形式でダウンロード (383K) -
福場 博保, 山沢 伸江, 稲垣 長典1954 年 28 巻 1 号 p. 59-62
発行日: 1954年
公開日: 2008/11/21
ジャーナル フリーThe determination of fat in foods can be performed by the saponification method. The procedure of this method is as follows:
After the addition of 10ml. of 33% KOH solution and 40ml. of 96% EtOH to W g. of sample, the mixture is boiled for 30 min., then cooled, and the soap formed by the saponification is decomposed with 17 ml. of 25% HCI, and the free fatty acids are then extracted with 50 ml. of petroleum naphtha, and 25 ml. of this naphtha solution are titrated with a standard NaOH solution. When T is the volume of N/10 NaOH used for the titration, the fat content (%) can be calculated by the following formula:
T×284×2×1.04×100/W×10.000=5.907T/W For the determination in samples with high a starch content, KOH used for the saponification must be dissolved in EtOH.抄録全体を表示PDF形式でダウンロード (339K) -
(第3報)実験室的規模に依る糖蜜の連続醗酵に就て上田 清基, 小嶋 哲也, 宮坂 隆之助, 朝井 勇宣1954 年 28 巻 1 号 p. 62-66
発行日: 1954年
公開日: 2008/11/21
ジャーナル フリーMolasses was successfully and continuously fermented in the laboratory plant with the cycle time of 24 hours and controlled pH for extended period without any apparent yeast degradation.
The fermentors consisted of two ten-liter glass jar fermentor in series. The mash was agitated mechanically and removed continuously by overflow system. When the yeast level, about 120×106 cells per ml., was maintained in the secondary fermentor, the fermentation cycle (24 hours) was neary equal to that of batch fermentation which was inoculated with a small quantity of yeast and agitated mechanically. At the yeast level, about 190×106, cellss per ml., the fermentation cycle was reduced to 16 hours.抄録全体を表示PDF形式でダウンロード (1405K) -
(第1報)麹菌蛋白分解酵素の特性及び強力蛋白分解菌の検索に就て(その1)吉田 文彦1954 年 28 巻 1 号 p. 66-70
発行日: 1954年
公開日: 2008/11/21
ジャーナル フリー(1) A procedure for studying 542 strains of Aspergilli is described in this paper. Two types of proteolytic enzyme systems are obtained.
(2) Five hundred strains of Asp. orysae type are tested. Thirty-three strains produce, sufficient proteinase activity to warrant further study.
(3) Individual mold strains varied in their ability to attack various substrates, and these dissimilarities suggest differences in the specificity and composition of the proteolytic enzyme systems elaborated by the various strains.抄録全体を表示PDF形式でダウンロード (466K) -
(第1報)Aspergillus属菌類によるCystineの分解について小幡 彌太郎, 石川 芳典1954 年 28 巻 1 号 p. 70-73
発行日: 1954年
公開日: 2008/11/21
ジャーナル フリーSulfate formation in eystine-media(its nitrogen source was L-cystine only) by Aspergillus molds were studied. Addition of other nitrogen sources (amino-acids, ammonium salts, nitrate, urea) diminished its formation. From cysteic acid, taurine, dithiodilactic acid, dithiodiglycol, and thioglycolic acid, sulfate formation could not be recognized. Only mercaptopyruvic acid was the precursor of sulfate.
The data accumulated lead us to postulate tentatively the following pathways of cystine metabolism.
(-SCH2CHNH2COOH)2→(-SCH2COCOOH)2→HO2SCH2COCOOH→SO4''.抄録全体を表示PDF形式でダウンロード (408K) -
(第1報)枝豆の高級脂肪酸脱水素酵素について福場 博保, 小丸 晴夫1954 年 28 巻 1 号 p. 74-78
発行日: 1954年
公開日: 2008/11/21
ジャーナル フリーThe extract of green soybeans had the action of the higher fatty acid dehydrogenase. This dehydrogenase took only the following fatty acids as the substrate: myristic, palmitic, stearic, oleic, linoleic, and alpha-hydroxy, 12-hydroxy, 9, 10-dihydroxy, and 9, 10, 12-trihydroxystearic, acids, and the optimum pH of this enzyme was 6.8 and the optimum temperature was between 35 and 40°.
By the use of 2, 3, 5-triphenyltetrazolium chloride, as the hydrogen acceptor and the indicator, it was observed that the enzyme reaction proceeded linearly with time.抄録全体を表示PDF形式でダウンロード (520K) -
(第3報)1新結晶グルコフラクタンに就て(その2)水野 卓, 林 金雄1954 年 28 巻 1 号 p. 78-83
発行日: 1954年
公開日: 2008/11/21
ジャーナル フリーA new crystalline glucofructan obtained from the water or 80% alcohol extract of the bulb of Lytoris radiata HERB. was confirmed to be a nonasaccharide consisted of one part of gluco-se and eight parts of fructose and was named “Lycorisin” by the authors.
Experiments on the intermediate hydrolysates and methylation of glucofructan showed that fructose residues linked through C1 and C2 and that glucose was Fan end group linked with fructose as the form of sucrose, and so the above-mentioned constitutional formula was assumed.抄録全体を表示PDF形式でダウンロード (563K) -
(第1報)助棲菌に依る或る種異常醗酵の抑制効果について木下 祝郎, 志賀 昭夫, 奥村 拓二1954 年 28 巻 1 号 p. 83-87
発行日: 1954年
公開日: 2008/11/21
ジャーナル フリー1. 癈糖蜜のアセトン・ブタノール醗酵に於てしばしば経験される各種異常醗酵の中,著者等がB型と呼ぶ1種の酸醗酵を改善する目的で有効助棲菌の探索した.
2. 試験した各種好気性菌或は酵母等の中でTorula utilisはしばしば異常醗酵を起す台湾糖蜜醪を旺盛に醗酵せしめ, B型異常醗酵を解消する作用のある事を知つた.亦この助棲作用に依り糖蜜醗酵に適さないと考えられていた多数のブタノール菌株も使用驚能となるものである事を知つた.
3. この有効因子は加熱で容易に破壊され且培養濾液中にも存在する.この濾液のinvertase activityを検した処,蔗糖の強い転化力を有する事が証明され,廃糖蜜をこの濾液で転化して醗酵に用うれば良好な醗酵を行うので,この菌の助棲作用はそのinvertase activityに在ると考えられる.
4.Torula utilisの外種種の酵母,糸状菌の中にもこのinvertase activityの強いものを認め,これらの中でsolvent比に影響を及ぼさない菌株は助棲菌として使用可能であろう事が推察される.
終りに異常醗酵に関し種種御教示を賜つた東大坂口教授,朝井教授,有馬助教授に対し,亦本研究に鞭撻と発表の許可を与えられた協和醗酵工業社長加藤弁三郎博士に深く感謝致します.
本稿の要旨は昭和27年4月農芸化学大会で口演した.抄録全体を表示PDF形式でダウンロード (506K) -
能勢 和夫1954 年 28 巻 1 号 p. 87-90
発行日: 1954年
公開日: 2008/11/21
ジャーナル フリー1. In CuSO4-NaOH-Na3 citrate mixture, the moler ratio Cu/citrate of the Cu-citrate complex is 1:1 in strong alkaline solutions, while both complexes with molar ratios 1:1 and 1:2 coexist in less alkaline solutions.
2. In CuSO4-Ca(OH)2-glucose mixture, a Cu-glucose complex is formed, in which the molar ratio Cu/glucose is 1:1.
3. In the acidity, the activity of Cu++ in CuSO4-Na3 citrate mixture is exceedingly smaller than that in CuSO4-glucose mixture.
4. The following assumption as to the action of Bordeaux mixture has been suggested: under a strong alkaline condition as exists at the plant surface sprayed with the Bordeaux mixture, Cu forms a complex with glucose or similar substances, and goes into solution. As soon as the complex thus formded is absorbed in the cell, intracellular pH being between 5_??_7 it decomposes to liberate Cu++. It is pressumed that the Cu++ is biologically active.抄録全体を表示PDF形式でダウンロード (337K)
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