Food Hygiene and Safety Science (Shokuhin Eiseigaku Zasshi)
Online ISSN : 1882-1006
Print ISSN : 0015-6426
ISSN-L : 0015-6426
Volume 7 , Issue 4
Showing 1-15 articles out of 15 articles from the selected issue
  • Tadashi ARAI
    1966 Volume 7 Issue 4 Pages 289-297
    Published: August 05, 1966
    Released: December 11, 2009
    JOURNALS FREE ACCESS
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  • Strilization of Mould Injurious to the Stored Cereals and Influence on Germination of Plant Seeds
    Osamu TSURUTA, Akiko ISHIHARA
    1966 Volume 7 Issue 4 Pages 298-303_1
    Published: August 05, 1966
    Released: December 11, 2009
    JOURNALS FREE ACCESS
    The condition of sterilization of mould readily parasitic to the stored cereals was investigated to obtain the highest efficiency of fumigant the effective minimum fumigating times were as follows:
    2 hours for the ethylene concentration of 30% in fumigation chamber, 48 hours for 0.8% and for the concentration of 0.7% 72 hours to expect a complete effect.
    The influence of the fumigant to the seed germination was also observed and it was found that the effect depends on the kind of the subjected plant.
    In this respect, in general, shorter fumigating time with higher fumigant concentration is preferable to the opposite way.
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  • Assay of 2-(2-Furyl)-3-(5-nitro-2-furyl)-acrylamide and Nitrofurazone by the Control Standard Method
    Seiji FUJII, Moto-o HARADA, Nobue OKA, Saburo KANNO, Yutaka WADA, Tada ...
    1966 Volume 7 Issue 4 Pages 304-308_1
    Published: August 05, 1966
    Released: December 11, 2009
    JOURNALS FREE ACCESS
    The control standard method was applied to the assays for 2-(2-furyl)-3-(5-nitro-2-furyl)-acrylamide (abbreviated as furylfuramide) and nitrofurazone.
    The procedures are as follows:
    FURYLFURAMIDE
    Reagent:
    Control standard solution: Weigh accurately about 0.1g of potassium bichromate, dissolve in 0.01N sulfuric acid and make exactly to 1000ml.
    Sample solution:
    Weigh accurately about 0.1g of furylfuramide, dissolve in 40ml of dimethylformamide and dilute with water exactly to 1000ml. Dilute 10ml of this solution with the mixture of 0.05M KH2PO4 solution and 0.05M Na2HPO4 solution (9:1, pH6.0) to 100ml. The volumetric flask used should be colored, because furylfuramide solution is very sensitive to light.
    Determination:
    Determine the absorbance of the control standard solution (As), at the wave length of absorption minimum (about 313mμ). At the same time determine the absorbance of the sample solution (A), at the wave length of absorption maximum (about 308mμ).
    Calculation:
    Content(%)=A/As×0.842×Weight of potassium bichromate(g)/Weight of furylfuramide(g)×100
    NITROFURAZONE
    Reagent:
    Control standard solution: Weigh accurately about 0.1g of potassium bichromate, dissolve in 0.01N sulfuric acid and make exactly to 1000ml. Dilute 25ml of this solution with 0.01N sulfuric acid to 100ml.
    Sample solution:
    Weigh accurately about 0.1g of nitrofurazone, dissolve in 40ml of dimethylformamide and dilute with water exactly to 1000ml. Dilute 5ml of this solution with the mixture of 0.05M KH2PO4 solution (9:1, pH6.0) to 100ml. The volumetric flask used should be colored, because nitrofurazone solution is very sensitive to light.
    Determination:
    Determine the absorbance of the control standard solution (As), at the wave length of absorption maximum (about 257mμ). At the same time determine the absorbance of the sample solution (A), at the wave length of absorption maximum (about 261mμ).
    Calculation:
    Content(%)=A/As×0.947×Weight of potassium bichromate(g)/Weight of nitrofurazone(g)×100
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  • Effect of Dehydroacetic Acid on the Drug Metabolizing Enzyme Activity of Rat Liver
    Eigo TAKABATAKE, Toshihiko ARIYOSHI, Seigo KATAOKA
    1966 Volume 7 Issue 4 Pages 309-314_1
    Published: August 05, 1966
    Released: December 11, 2009
    JOURNALS FREE ACCESS
    The effects of food preservatives on the metabolism of drugs were investigated using female rats. Among five preservatives dehydroacetic acid (DHA) showed some stimulating effect on the metabolism of drugs. The pretreatment of female rats with 200mg/kg of DHA daily for 7 or 10 days shortened the duration of hypnosis by 100mg/kg of hexobarbital. The liver preparation from DHA-treated rat had higher activity of N-demethylation of aminopyrine, hydroxylation of hexobarbital or cyclobarbital, aromatic hydroxylation of aniline, and hydrolysis of parathion than control. DHA increased glycogen content but did not change the amount of crude fat in liver. Electronmicroscopical picture of liver from DHA-treated rat showed a marked proliferation of smooth-surfaced endoplasmic reticulum in the hepatic cell. These observations were discussed in connection with the inductive effect of some drugs on the metabolism of drugs.
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  • Tadaiku UEYAMA, Takihiko KAWASE
    1966 Volume 7 Issue 4 Pages 315-318_1
    Published: August 05, 1966
    Released: December 11, 2009
    JOURNALS FREE ACCESS
    A survey of Salmonella-carrying rats was carried out at the Osaka City Central Wholesale Market from May 1st to June 30 in 1965.
    This survey revealed that 4 or 3.67 per cent of 109 rats examined were positive for Salmonella and all isolated strains were S. enteritidis.
    But rats which had carried Salmonella were caught at two shops only, cafeteria and butcher's shop of the 112 shops examined. The percentage of carrier rats found 20 in latter.
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  • Detection of the Aerobic Sporeforming Thiaminase Bacteria from Foods
    Yasuta NAOI
    1966 Volume 7 Issue 4 Pages 319-323_1
    Published: August 05, 1966
    Released: December 11, 2009
    JOURNALS FREE ACCESS
    50 Strains of aerobic sporeforming thiaminase bacteria, 14 strains Bacillus aneurinolyticus and 36 strains Bacillus thiaminolyticus, were isolated from 370 foods. Their biological characteristics and disintegration of carbohydrates were accordance with standard strain.
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  • On the Content of Copper and Iron in Shochu, Whisky and Brandy
    Tatsuo KONDO, Masakazu YAMADA
    1966 Volume 7 Issue 4 Pages 324-327_1
    Published: August 05, 1966
    Released: December 11, 2009
    JOURNALS FREE ACCESS
    The content of iron and copper was determined by square-wave polarography for 14 samples of shochu, 7 samples of whisky and 5 samples of brandy.
    The results of the experiment were shown in Table 1, 2 and 3.
    Copper in the samples is considered to have resulted from the exposure of beverages to the corrosived surface of distillation apparatus used.
    The content of copper was strikingly varied in accordance with brand of beverages.
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  • On the Content of Copper, Iron, Zinc, Lead and Tin in Sake, Wine and Beer
    Tatsuo KONDO
    1966 Volume 7 Issue 4 Pages 327-330_1
    Published: August 05, 1966
    Released: December 11, 2009
    JOURNALS FREE ACCESS
    The contents of iron, copper, zinc, lead and tin in sake brewing water, sake, wine and beer were determined by square-wave polarography.
    The results obtained are summarized as follows:
    1. The content of iron: Below 0.10ppm (8 samples) and 0.11-0.40ppm (14 samples) for sake. 3.47-14.16ppm (2 samples) for canned sake. Below 0.50ppm (1 sample) and 0.88-6.72ppm (4 samples) for wine. 0.12-0.17ppm (4 samples) for canned beer and below 0.10ppm (1 sample) for beer.
    2. The content of copper: 0.09-1.20ppm (24 samples) for sake. 0.18-1.46ppm (2 samples) for canned sake. 0.14-7.85ppm (5 samples) for wine. 0.06-0.14ppm (4 samples) for canned beer and 0.06ppm (1 sample) for beer.
    3. The content of zinc: 0.71-2.10ppm (14 samples) for sake and 0.12-1.53ppm (5 samples) for wine.
    4. The content of lead: Below 0.05ppm (5 samples) and 0.06-0.44ppm (10 samples) for sake. Below 0.10ppm (3 samples) and 0.12-0.32ppm (2 samples) for wine.
    5. The content of iron in canned sake (2 samples) was higher than in bottled one while tin was very low in canned sake and beer.
    6. It was confirmed that copper-contamination of high degree in samples (No. 1, 2, 3 and 4) was due to exposure on the corrosived surface of the filter apparatus.
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  • On the Relationship between the Content of Metals and the Developed Color of Sake
    Tatsuo KONDO
    1966 Volume 7 Issue 4 Pages 331-333_1
    Published: August 05, 1966
    Released: December 11, 2009
    JOURNALS FREE ACCESS
    The relationship between the content of metals and the developed color in sake after storages was studied for 37 samples produced in various districts.
    The content of metals was measured by square-wave polarography and the color intensity of sake was measured spectrophotometrically using 5cm cell.
    The results of the experiment were shown in Table 1.
    As the results, it was seemed that the higher contents of metals in sake, the deeper color appeared.
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  • Reaction between Aldehydes and 2-Thiobarbituric Acid
    Ryuji AMANO
    1966 Volume 7 Issue 4 Pages 334-337_1
    Published: August 05, 1966
    Released: December 11, 2009
    JOURNALS FREE ACCESS
    Condensation products of several aldehydes and oxidized soy-bean oil with 2-thiobarbituric acid (TBA) were tested chemically and spectrophotometrically. Oxidized soy-bean oil yielded the precipitate (I) with TBA, which showed the same absorption spectrum as malonic aldehyde-TBA condensation product (II). The nitrogen contents and the results obtained by “the continuous variation method” revealed that one molecule of malonic aldehyde condenses with two molecules of TBA, whereas when one molecule of glyoxal reacts with one molecule of TBA, a red color (λmax 520mμ) is produced, and when with two molecules of TBA, a pink color (λmax 548mμ) appears. The dissociation constants of (I) and (II) were determined by spectrophotometric method at pH range from 1 to 13.5, and it was observed that both substances showed the same three value of pKa: 9.4, 10.3 and 13.4.
    The above findings data indicated that the condensation product made by one molecule of malonic aldehyde and two molecules of TBA was at least one of various pigments formed at the TBA test for rancid fatty food.
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  • Separation and Identification of Water-Soluble Dyes (1) On the Developing Solvent and Condition of Activation of Silica Gel
    Mieko KAMIKURA
    1966 Volume 7 Issue 4 Pages 338-342_1
    Published: August 05, 1966
    Released: December 11, 2009
    JOURNALS FREE ACCESS
    Thin layer chromatography with silicagel was applied to water-soluble dyes. Silica gel chromatoplates used were prepared under three different conditions of activation: No activation, 60°C activation for 60 minutes, and 100°C activation for 60 minutes. Using eight developing solvents, the influence of the conditions for activation upon the separation of water-soluble dyes was investigated. The results are shown in Table 3.
    Of the eight developing solvents investigated by the author, methyl ethyl ketone+water (20:1.0) mixture and methyl ethyl ketone+acetone+water (10:0.1:0.4) mixture gave clear separation for xanthene dyes, including Fluorescein, Erythrosine, Eosine, Rose Bengale, Phloxine and Acid Red, whose Rf values decrease in the described order. Methyl ethyl ketone+water (20:1.0) was applied to eight adsorbents and two silica-gel coated sheets which were purchased from different manufacturers. The chromatograms obtained are shown on Figures 7 and 9.
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  • Infrared Spectrometric Determination of Sodium Cyclamate in Mixed Synthetic Sweetening Agents
    Masaya KAMIJO, Taro KAWAMURA, Tetsuo INOUE
    1966 Volume 7 Issue 4 Pages 343-348_1
    Published: August 05, 1966
    Released: December 11, 2009
    JOURNALS FREE ACCESS
    In generally, sodium cyclamate has been determined by EDTA method. However, this method is complicated and time-consuming.
    In this report, studies on the infrared spectrometric analysis of cyclohexyl nitrite which was derived from sodium cyclamate by sodium nitrite, are described.
    The results obtained are as follows:
    1. The absorption of cyclohexyl nitrite in IR-region by carbon tetrachloride was applied to the analysis of sodium cyclamate.
    2. For the quantitative analysis, 1, 645cm-1 is useful as key band for cyclohexyl nitrite.
    3. The influence of the other food additives and saccharides were investigated, and the determination of sodium cyclamate was found possible.
    4. This method was applied to several samples contained synthetic sweetening agents and the recovery of sodium cyclamate was 97.0-100.7%.
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  • Changes on Nitrogen Distribution in Mastitic Milk
    Hideo HOSOYA, Yoshihiro KUWABARA, Yukio IGARASHI, Tadashi KUGOH
    1966 Volume 7 Issue 4 Pages 349-353_1
    Published: August 05, 1966
    Released: December 11, 2009
    JOURNALS FREE ACCESS
    The quarter milk from the Holstein cows was collected at random. The California Mastitis Test (CMT) was carried out for all the samples collected, and at the same time the nitrogen components were analyzed by using the Rowland's semi-quantitative method. The following results were obtained:
    1) Total nitrogen contents in mastitic milk increased slightly as compared with normal milk.
    2) Casein contents decreased considerably in mastitis.
    3) Alubumin and globulin contents increased largely in mastitis; there was significant difference between normal and mastitic milk.
    4) Other nitrogen contents increased slightly in mastitis.
    5) Casein number was below 70% in mastitic milk, and there was significant difference between mastitic and normal milk.
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  • [in Japanese]
    1966 Volume 7 Issue 4 Pages 354-360
    Published: August 05, 1966
    Released: December 11, 2009
    JOURNALS FREE ACCESS
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  • [in Japanese], [in Japanese], [in Japanese], [in Japanese]
    1966 Volume 7 Issue 4 Pages 361-365
    Published: August 05, 1966
    Released: December 11, 2009
    JOURNALS FREE ACCESS
    Download PDF (2083K)
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