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Volume 14 (1973)
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Volume 14, Issue 6
Displaying 1-18 of 18 articles from this issue
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Yoshio UENO1973 Volume 14 Issue 6 Pages 501-510
Published: December 05, 1973
Released on J-STAGE: March 01, 2010
JOURNAL FREE ACCESSDownload PDF (1688K) -
Akio MITSURA, Ryuji AMANO, Hiroya TANABE1973 Volume 14 Issue 6 Pages 511-516
Published: December 05, 1973
Released on J-STAGE: July 27, 2010
JOURNAL FREE ACCESSExperiments were carried out on the acaricidal effects of the treatments of stored food with four kinds of compressed gases under various conditions, as a possible measure for the control of mites with non-poisonous materials. The gases used in the experiments were carbon dioxide, dinitrogen monooxide (laughing gas), nitrogen and hydrogen, all in high pressure bombs. Samples of the grain mite, Tyrophagus putrescentiae were placed in high-pressure resistant autoclave for chemical synthesis (200ml capacity) together with the culture medium (dried yeast), and were treated with these gases under various pressures and temperatures for different time lengths. The materials after treatment were incubated in a chamber regulated to 21°C and 85-90% R.H. for two months, and the treatment conditions, in which no survival and no breeding of the mites was confirmed, were regarded as the effective dose.
The results indicate that the acaricidal effects were highest in carbon dioxide, while dinitrogen monooxide was slightly effective, and almost no effects were observed with nitrogen and hydrogen even when these gases were applied under high pressures. With carbon dioxide, for example, the minimum effective dose at 40°C was 10 minutes at 16kg/cmcm2 (absolute), 20 minutes at 11kg/cmcm2 and 65 minutes at 6kg/cmcm2. Under lower temperature conditions, higher pressure was necessary to obtain the same effects with the same exposure time, as shown in Table 2 and Fig. 3. It was observed through these experiments that effective control of the mites in stored food could be achieved by application of high pressure carbon dioxide for a certain length of time under a given temperature.View full abstractDownload PDF (1213K) -
Masami MATSUI, Toshiharu KAWABATA, Tohru ISHIBASHI1973 Volume 14 Issue 6 Pages 517-523
Published: December 05, 1973
Released on J-STAGE: March 01, 2010
JOURNAL FREE ACCESSPreparation of prepared solution and conditions for the quantitative analysis of steryl esters in milk fat by gas-liquid chromatography (GLC) were investigated, and components of steryl esters in various dairy products were analysed. Results obtained may be summarized as follows:
1. Clean-up of the preparated solution by a silicic acid column technique was superior to that by the thin-layer chromatographic separation.
2. Steryl esters in commercial milk fat were found to consist of cholesteryl esters of C-10, C-12, C-14, C-16, C-18 and C-20, in which the most predominant component was the C-18 ester. However, the amount of C-18 ester in milk fat was rather inconsistent showing a marked seasonal variation in the level.
3. GLC analysis of steryl esters was carried out using cholesteryl cinnamate as an internal standard. Ratios of cholesteryl esters of C-18 to C-16 in milk fat were much higher than those values obtained with so-called synthetic (commerical milk fat) or imitation milk fat. The ratio of cholestleryl esters of C-18 to C-16 may be applicable for the identification of so-called synthetic milk fat in various dairy products, especially, may fit for detecting adulterated or unnatural milk fat.
4. Judging from the retention time of GLC, the fatty acid components and the total amount of cholesterol in a so-called synthetic milk fat were almost the same as those of the natural milk fat, whereas the triglyceride components in both types of milk fat were distinguished each other according to GLC being equipped with a column of good separating ability (theoretical plate number of the column was more than 800 when calculated for tristearin).View full abstractDownload PDF (1047K) -
Analytical Method of Organophosphorus Insecticide Residues in Agricultural ProductsKatsharu FUKUHARA, Mitsuharu TAKEDA, Hiroya TANABE1973 Volume 14 Issue 6 Pages 524-529
Published: December 05, 1973
Released on J-STAGE: March 01, 2010
JOURNAL FREE ACCESSVarious kinds of organophosphorus insecticides were investigated to establish the analytical method of those insecticides by use of gas chromatograph with a flame photometric detector (FPD).
The separation of 22 kinds of organophosphorus insecticides on gas chromatogram is not complete under the condition examined in this study.
It was found that FPD detector has good sensitivity for these insecticides and detection limits of them were between 0.15ng and 5ng on column of 2% QF-1.
Furthermore, FPD gas chromatography was examined to analyze the residues of 7 kinds of organophosphorus insecticides in agricultural products, and it was shown that the recoveries of these insecticides added to sample homogenates were between 76% and 110% in this method.View full abstractDownload PDF (1140K) -
Kaoru KATSUMURA, Mutsuo ISHIZAKI, Tokihiro SASAMOTO, Seiichi UENO, Yut ...1973 Volume 14 Issue 6 Pages 530-534
Published: December 05, 1973
Released on J-STAGE: March 01, 2010
JOURNAL FREE ACCESSThe determination of aluminum in food by the atomic absorption spectrometry was studied.
The operating conditions were as follows: analytical line was 3092Å for aluminum, electric current in the hollow cathode lamp was 15mA, and combustion gas flow rates were 6L/min for nitrous oxide and 5.5L/min for acetylene.
The most suitable pH for the extraction of aluminum was studied, and it was found that the optimum pH was within 11 to 13. The relationship between the volume ratio (R) of the aqueos prepared solution containing aluminum ion to acetylacetone-butyl acetate and the extraction ratio was studied in order to obtain quantitative extraction. Aluminum was extracted quantitatively at R=3 to 6.
In the case of analysis of aluminum in food, plant, and sake (Japanese wine) by atomic absorption spectrometry, it was necessary to destroy the organic substances. For this purpose, a wet digestion procedure was adopted. Approximately 5 to 10g of the food sample or 100ml of sake was taken into a digestion flask of 300ml capacity to which was added a mixture of nitric, and sulfuric acid (10+1). After digestion, the acidic digested solution was diluted to 100ml with distilled water, and the solution was used for preparated solution.
The prepared solution was adjusted at pH 12, then extracted by acetylacetone-butyl acetate, and aluminum was determined by the atomic absorption method, the amounts of aluminum in food, plants, and sake were as follow: Miso (soybean paste), 2.4 to 32.9ppm; soybean, 22.0ppm; sake, 2.6ppm, and the coefficients of variation were about 14%.View full abstractDownload PDF (763K) -
Nonenzymic Dephosphorylation of 5′-RibonucleotidesSadao KUSUI, Akira MURAKOSHI, Hideyuki MORI1973 Volume 14 Issue 6 Pages 535-541
Published: December 05, 1973
Released on J-STAGE: July 27, 2010
JOURNAL FREE ACCESSThe nonenzymic dephosphorylation of 5′-ribonucleotides (I) was investigated in buffer solutions ranging pH 1 to 12.5 at 100°C.
I was shown to be dephosphorylated in the pH 1 to 8 region being a maximum at around pH 4, but scarcely or not in alkaline media.
5′-Purine nucleotides such as 5′-inosinic acid (5′-IMP), 5′-guanylic acid (5′-GMP), and 5′-adenylic acid (5′-AMP) liberated more readily phosphoric acid in acidic media than 5′-pyrimidine nucleotides such as 5′-cytidylic acid (5′-CMP) and 5′-uridylic acid (5′-UMP).
2′ (3′) -Ribonucleotides (II), isomers of I, such as 2′ (3′) -GMP, 2′ (3′) -AMP, 2′ (3′) -CMP, and 2′ (3′) -UMP were dephosphorylated more rapidly in acidic media than I.
The rate constants of dephosphorylation of I and II at pH 5.0 at 100°C were in the following order,
2′ (3′) -GMP=2′ (3′) -AMP=2′ (3′) -CMP≥2′ (3′) -UMP>5′-GMP>5′-AMP≥5′-IMP>5′-UMP≥5′-CMP.
The dephosphorylation of I was found to be catalyzed greatly by Th (IV), Ce (III), Pb (II), and Au (III) and slightly by lanthanides (III). ZrO (II), Y (III), Ir (IV), and Cs (I), while inhibited by Al (III), Cr (III), UO2 (II), In (III), Be (II), WO4 (II), Nb (V), Sn (IV), and Sb2O7 (IV). On the other hand, many other metal ions were not effective in the dephosphorylation of I. Therefore, metal ions tested can be classified into three groups, that is, catalytic, inhibitory, and ineffective ions on the dephosphorylation of I.View full abstractDownload PDF (1206K) -
Effects of Cydohexylamine and Cydohexylamine Sulfate on the Fetal Development in RatsSatoru TANAKA, Shinsuke NAKAURA, Kunio KAWASHIMA, Shigeyuki NAGAO, Tsu ...1973 Volume 14 Issue 6 Pages 542-548
Published: December 05, 1973
Released on J-STAGE: March 01, 2010
JOURNAL FREE ACCESSThe teratogenic effects of cyelohexylamine (CHA) and cyclohexylamine sulfate (CHA-sulfate) were examined in rats. The results obtained were as follows:
Adult Wistar strain female and male rats and Wistar-lmamichi strain non-pregnant and pregnant female rats were orally given aqueous solution of CHA. Acute toxic symptoms caused by CHA were staggering gait, salivation, lacrymation and convulsion. In postmortem examination, remarkable hemorrhage in lung, marked edematous change in the mucous membrane of fore-stomach and congestion in glandural-stomach and duodenum were observed.
Median lethal doses calculated following oral administration of CHA were 236.6mg/kg, 278.2mg/kg for Wistar strain female and male rats, 155.7mg/kg for Wistar-Imamichi strain female rats and 180.1mg/kg for pregnant Wistar-Imamichi rats, respectively.
Pregnant Wistar-Imamichi strain rats were orally given once daily for 7 days from day 7 to 13 of gestation at the doses of 1.8, 3.6, 18 and 36mg/kg of CHA and its sulfate of 71.6mg/kg.
In the highest dose of CHA, a suppression in body weight gain and reduction in food and water consumptions were ebserved and 2 of 17 dams died following the administration. No significant difference between the treated and control groups was found in maintenance of pregnancy and in fetal development, and no abnormal ities of the fetuses such as resorption and malformation were observed in all groups.View full abstractDownload PDF (1181K) -
Teratogenic Effect of Dietary Salicylic Acid in RatsSatoru TANAKA, Kunio KAWASHIMA, Shinsuke NAKAURA, Shigeyuki NAGAO, Tsu ...1973 Volume 14 Issue 6 Pages 549-557
Published: December 05, 1973
Released on J-STAGE: March 01, 2010
JOURNAL FREE ACCESSSalicylic acid was administered to pregnant rats at levels of 0.06, 0.1, 0.2 and 0.4% in diet from the 8th to 14th day of gestation, and its teratogenic effects were examined.
A temporal body weight loss with toxic symptoms such as salivation, piloerection following the administration was observed in 0.4% group, and also high mortality and growth retardation in fetuses were noticed. Not any toxic signs were observed in other three lower dose groups, but a significant growth retardation was noticed in fetuses of 0.2% group. Some kinds of anomalies with considerably high frequency were occurred in both groups of 0.4 and 0.2%, but not in the low dose groups below 0.1%.
In the postnatal observation, in 0.4% group only 6 newborn were obtained alive from one dam and all died within 1 day after birth. Among low dose groups below 0.2%, no marked difference in litter size and in weaning rate at 8 weeks after birth and no evidence of growth retardation were obtained. In the postmortem examination, neither external nor internal organ anomalies were found in all groups, but minor changes in cervical bone occurred in some pups of 0.2% group.
These findings support a view that salicylic acid acts as embryotoxic and teratogenic in rat, even after administration by dietary route as well as forced oral administration.View full abstractDownload PDF (1327K) -
Hiroyuki KURODA, Takaaki MORI, Hideo HIROSE, Miyuki TADA1973 Volume 14 Issue 6 Pages 558-560
Published: December 05, 1973
Released on J-STAGE: March 01, 2010
JOURNAL FREE ACCESSSeveral kinds of determination methods of cyanide in some beans have been published, however, most of them do not base on the specific reaction for cyanide, but bare on such as the titration method.
In this paper, the colorimetric method using hemoglobin for the new determination of cyanide was studied. The principle of the presented method was based on the fact that cyanide is converted to cyanmethemoglobin with hemoglobin at room temperature. The minimum limit of detection was approximately 1μg as cyanide in preparated solution.View full abstractDownload PDF (387K) -
Kazuko TODA, Yaeko IZAKI, Takashi ITOKAWA1973 Volume 14 Issue 6 Pages 561-564
Published: December 05, 1973
Released on J-STAGE: March 01, 2010
JOURNAL FREE ACCESSA method is described for the reproducible determination of nitrosamines by conversion to their corresponding nitramines using peroxytrifluoroacetic acid.
1. The use of 90w/w% hydrogen peroxide brings a higher, constant yield of peroxytrifluoroacetic acid.
2. The reaction between 1 mole of 90% hydrogen peroxide and 1 mole of trifluoroacetic anhydride in methylene chloride is finished very rapidly. The solution of peroxytrifluoroacetic acid is stable for 24 hours.
3. Optimum time for convertive reaction of nitrosamines is 120 minutes and the temperature is 40°C.
Using these procedures, desirable reproducible yields of nitramines are obtained.View full abstractDownload PDF (658K) -
Studies on Noodles VIMasuo TANADA, Haruhiko UCHIDA, Chisako IDE, Sachimi TAMAKI1973 Volume 14 Issue 6 Pages 565-568
Published: December 05, 1973
Released on J-STAGE: March 01, 2010
JOURNAL FREE ACCESSThe reduction of hydrogen peroxide (H2O2) in Japanese noodle by cooking was studied in this papers. 50-80% of H2O2 in Japanese noodle (produced with the using of cutter No. 8-No. 20) was eluted by boiling for 3 minutes, and the residual H2O2 in Japanese noodle (produced with the using of cutter No. 12) was 30%. The remarkable effects on H2O2 decomposition were found by soy sauce and soy bean paste (miso). The residual H2O2 after initial cooking was less than about 50%.View full abstractDownload PDF (742K) -
Influence of the Degree of Powdering on the Extraction of Organochlorine Pesticides from Cereals and BeansMitsuharu TAKEDA, Hiroshi SEKITA, Kumiko OTSUKI, Hiroya TANABE, Yasuo ...1973 Volume 14 Issue 6 Pages 569-573
Published: December 05, 1973
Released on J-STAGE: March 01, 2010
JOURNAL FREE ACCESSUsing unpolished and polished rice, wheat, red beans and soybeans, influence of the degree of powdering of the powdered samples on the extraction ratio of organochlorine pesticide residues was examined.
In the powdered samples of unpolished and polished rice, wheat and red beans in which pesticide residues were in comparatively low levels, the analytical values of organochlorine pesticides were almost equal among the samples of the different degrees of powdering within the same cereals or beans.
In the powdered soybean samples in which relatively high levels of the organochlorine pesticide residues were present, the analytical values of residues were higher in the samples of the high degree of powdering than in the low degree of powdering.View full abstractDownload PDF (1013K) -
Analytical Method of Organochlorine Insecticide Residues in OnionMitsuharu TAKEDA, Takashi SUZUKI, Kumiko OTSUKI, Hiroshi SEKITA, Katsu ...1973 Volume 14 Issue 6 Pages 574-579
Published: December 05, 1973
Released on J-STAGE: March 01, 2010
JOURNAL FREE ACCESSThe stability of 13 organochlorine insecticides to potassium permanganate treatment was investigated.
It was found that aldrin and heptachlor were in lack of stability and pp′-DDE and pp′-DDD were unstable, but other insecticides were very stable in this condition.
The removal of interfering substances of onion in the pesticide analysis was examined by the treatment of potassium permanganate, and also the analytical method of organochlorine insecticide residues in onion were investigated on the basis of these results.
It was shown in this report that the recovery of insecticides added to onion homogenate were between 77% and 97% except aldrin, heptachlor, pp′-DDE and pp′-DDD and those of pp′-DDE and pp-DDD werevery low (56 and 54%, respectively), but aldrin and heptachlor were not recovered at all.View full abstractDownload PDF (1071K) -
Fumiya MASUDA, Kikuhiko OKAMOTO, Kunio INOUE1973 Volume 14 Issue 6 Pages 580-582
Published: December 05, 1973
Released on J-STAGE: March 01, 2010
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Saburo KATO, Michitoshi SHIMODA, Tsugio KANEKO1973 Volume 14 Issue 6 Pages 583-594
Published: December 05, 1973
Released on J-STAGE: March 01, 2010
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Presence of Mutton in Commereial Minced MeatSumie YAMANAKA, Hiromi SATO, Masao NISHIMURA1973 Volume 14 Issue 6 Pages 595-600
Published: December 05, 1973
Released on J-STAGE: March 01, 2010
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[in Japanese], [in Japanese], [in Japanese], [in Japanese], [in Japane ...1973 Volume 14 Issue 6 Pages 601-620
Published: December 05, 1973
Released on J-STAGE: March 01, 2010
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1973 Volume 14 Issue 6 Pages 673
Published: 1973
Released on J-STAGE: March 01, 2010
JOURNAL FREE ACCESSDownload PDF (185K)
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