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Volume 9 (1968)
- Issue 6 Pages 431-
- Issue 5 Pages 337-
- Issue 4 Pages 269-
- Issue 3 Pages 189-
- Issue 2 Pages 81-
- Issue 1 Pages 1-
Volume 9, Issue 6
Displaying 1-14 of 14 articles from this issue
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Hiroshi KURATA1968 Volume 9 Issue 6 Pages 431-441
Published: December 05, 1968
Released on J-STAGE: July 27, 2010
JOURNAL FREE ACCESSDownload PDF (2489K) -
I. Efficacy Evaluated by Chemical and Organoleptic TestsTadashi ISHIHARA, Masato YASUDA, Toshiharu KAWABATA, Norio YASUNAGA, T ...1968 Volume 9 Issue 6 Pages 442-448
Published: December 05, 1968
Released on J-STAGE: March 01, 2010
JOURNAL FREE ACCESSHorse mackerels (Trachurus japonicus) were treated with furyl furamide (FF, 2- (2-furyl) -3- (5-nitro-2-furyl) acrylamide) either aboard the fishing boat or immediately after landing at Nagasaki Port, then transported to Tokyo by rail under ice-chilled condition. And the experiments were repeated 3 times during July and August in 1967. The quality of test fishes were compared both before and after transport to Tokyo by chemical and organoleptic examinations.
Results obtained may be summarized as follows:
1. So far as such chemical indices as volatile basic-N, trimethylamine-N and pH value are concerned, no marked difference was recorded between FF treated fish and non-treated control, and those values determined before and after transport to Tokyo.
2. When the test fishes which had received different treatments were stored at room temperature for 13 hours (at Nagasaki), apparently longer shelf life was observed in the FF treated groups, especially long period being recorded in the samples treated with the drug aboard the boats.
3. A marked difference could be seen between FF treated and control fish as judged by organoleptic tests. Especially, fish treated with the drug aboard the boat exhibited highest quality.
4. No appreciable difference was noted in the keeping quality of test fishes between those washed with the sea water in Nagasaki Port and those with an artificial sea water.View full abstractDownload PDF (1325K) -
II. Status of Bacterial Pollution of Sea Water and Fishcatch and Efficacy of the Drug on the DecontaminationToshiharu KAWABATA, Norio YASUNAGA, Tadashi ISHIWARA, Masato YASUDA, T ...1968 Volume 9 Issue 6 Pages 449-454
Published: December 05, 1968
Released on J-STAGE: March 01, 2010
JOURNAL FREE ACCESSBacteriological survey was conducted 3 times during July and August in 1967, with respect to the contamination of sea water in Nagasaki Port and the sea waters in the holds of fishing boats. To one of the fish hold in each boat was added furyl furamide (FF) for keeping the quality of fishcatch and the others being non-treated control.
In addition, the skins and muscles of horse mackerel samples which had been either treated or non-treated with FF were examined, and the tests were done before and after transport from Nagasaki to Tokyo by rail of rapid service under chilled condition.
Results obtained may be summarized as follows:
1. The sea water in Nagasaki Port being employed for landing such fishcatch as horse mackerel and common mackerel was found to be highly contaminated showing high plate counts and coliform numbers. Moreover, it was noted that Vibrio parahaemolyticus, one of the most important causative organisms of food poisoning in Japan could be detected throughout the present survey.
2. Fairly high bacterial numbers were recorded in the sea water of the control fish holds, while addition of FF at 5ppm to the holds resulted in marked decreases in the number of indicator organisms, and almost no V. parahaemolyticus was detected in the sea water of FF treated fish holds.
3. No V. parahaemolyticus was detected in the fish samples when tested immediately after being landed at Nagasaki, whereas the presence of this organism was confirmed in the control samples of the first experiment. Interestingly, almost no Vibrio was detected in the samples which had been treated with FF.View full abstractDownload PDF (1156K) -
Thermal Decomposition in Injection Port and On-Column ReactionSaburo KATO, Michitoshi SHIMODA, Tetsuo INOUE1968 Volume 9 Issue 6 Pages 455-459
Published: December 05, 1968
Released on J-STAGE: March 01, 2010
JOURNAL FREE ACCESSThe gas chromatographic behaviours of dulcin were investigated. From the results it became clear that dulcin was decomposed in injection port at higher temperature than about 170°C where it could be vaporised, showing the appearance of the subsidiary peak which was identified to be p-phenetidine. The higher temperature of injection port, the more sharply appeared both peaks, and the subsidiary peak was increased.
By on-column reaction with trifluoroacetic anhydride, the subsidiary peak shifted and the new peak of trifluoroacetophenetidine was observed. In case of the reaction with bis- (trimethylsilyl) -acetamide, the new peak of trimethylsilyl-p-phenetidine and two peaks of trimethylsilylated-dulcin appeared.View full abstractDownload PDF (742K) -
Determination of Dulcin by Its DerivativesSaburo KATO, Michitoshi SHIMODA, Tetsuo INOUE1968 Volume 9 Issue 6 Pages 460-464
Published: December 05, 1968
Released on J-STAGE: March 01, 2010
JOURNAL FREE ACCESSIn this report, the determination of dulcin was carried out by after conversion to its derivatives. The results were as follows:
When dulcin was reacted with acetic anhydride-pyridine mixture (1: 4) in boiling water bath for 20 minutes, the product showed a single peak of acetophenetidine gas chromatographically, having a linear relation between the peak heights and amounts of dulcin. In case trifluoroacetic anhydride was added and reacted with dulcin in dichloromethane at room temperature for 5 minutes, trifluoroaceto-p-phenetidine was produced. For the determination of dulcin, the linearity and precision of this method were less than those of the acetylation method, though the procedure was simple and rapid. Dulcin reacted with bis- (trimethyl silyl) -acetamide, and on the gas chromatogram, obtained by using non-polar column, the reaction mixture showed two major peaks which were presumed to be those of mono-and di-trimethyl silyl derivatives of dulcin.View full abstractDownload PDF (857K) -
Taro KOBAYASHI, Mitsuko YADA1968 Volume 9 Issue 6 Pages 465-468
Published: December 05, 1968
Released on J-STAGE: March 01, 2010
JOURNAL FREE ACCESSStilbazo was used for the determination of tin in food stuffs, and its analytical result was compared with those obtained by the reference official method.
Presented method was proved to be more suitable for the microanalysis of tin contained in food due to the following reason.
Tin, ranging from 0.1 to 0.8ppm can be determined easily and rapidly without interference by other cations and there are no difficulties in operation, in procedure.View full abstractDownload PDF (610K) -
Umeo YOSHINO, Keiko TANAKA, Kunio YAMAUCHI, Tomokichi TSUGO1968 Volume 9 Issue 6 Pages 469-472
Published: December 05, 1968
Released on J-STAGE: March 01, 2010
JOURNAL FREE ACCESSAmong the milk constituents, protein and fat had no effect on the determination of lactose in milk by Lane-Eynon method. But the presence of calcium decreased the apparent lactose content in milk. When the effect of calcium was eliminated by the addition of potassium oxalate, sodium hexametaphosphate or EDTA, the apparent lactose content increased by 0.13% and gave the same result as that determined by Chloramine-T method.
The effect of calcium in determination of sucrose in sweetened condensed milk was less marked; when calcium became innert by addition of EDTA or sodium hexametaphos-phate, the apparent sucrose content in sweetened condensed milk decreased by 0.2%.View full abstractDownload PDF (796K) -
Effects of Oral Administration during Pregnancy on Fetus and New Born in Mice and RatsYoshihito OMORI, Tsukasa KUWAMURA, Satoru TANAKA, Kunio KAWASHIMA, Shi ...1968 Volume 9 Issue 6 Pages 473-480
Published: December 05, 1968
Released on J-STAGE: March 01, 2010
JOURNAL FREE ACCESSAdministration of ABS to rats during pregnancy caused diarrhea and suppression of body weight gain in groups given 1.0% and 2.0% diet. No remarkable effect was observed in groups given 0.5%, 0.1% and 0.025% diet. Although pregnancy was maintained even in 2.0% group the increase of fetal death and the decrease in fetal development was observed in the group. No macroscopic malformation, assumed to be caused by the administration of ABS, was observed. No deleterious effect on delivery and lactation as well as on development of new-born until 5 weeks after parturition was observed.
Oral administration of aqueous ABS to pregnant mice between 7 and 13 day of pregnancy caused slight effect on maternal weight gain, but no effect was observed in fetus from dams given 24mg/kg ABS. Administration of 240mg/kg caused increase of fetal development suppression and death on 18th day of pregnancy. Occurrence of congenital malformation, assumed to be originated from ABS administration, was not observed.View full abstractDownload PDF (1542K) -
Akinobu WATANABE, Kachiko TOMONO, Rentaro ITO1968 Volume 9 Issue 6 Pages 481-487
Published: December 05, 1968
Released on J-STAGE: March 01, 2010
JOURNAL FREE ACCESSFrom the application tests of SMEC medium to the detection of E. coli from various kinds of foods, the following results have been obtained.
(1) In comparison of positive rate of E. coli from oysters applied by SMEC medium with that applied by EC medium, it was revealed that, in SMEC medium, MPN count on the confirmation test was perfectly identical with that on the IMViC completed test, but, in EC medium, the ratio of identity was only 40 percent.
(2) An evaluation of confirmation test was made, applied either by EC- or SMEC-medium for the detection of E. coli as an index of sanitary condition of oysters. Out of 49 EC gas-positive cultures, only 37 revealed to contain E. coli actually. In case of SMEC test, however, all the 37 gas-positive cultures contained E. coli from the market foods was achieved applying EC-, SMEC-, and BGLB-medium.
The results revealed that detection rate of E. coli from the positive specimens through presumptive test was highest in SMEC-medium (79.6%), followed by that in EC-medium (46.3%), while the rate was lowest in BGLB-medium (20.8%).View full abstractDownload PDF (1338K) -
Takashi TATSUNO, Masahiro IWAIDA, Hiroya TANABE, Iwao KAWASHIRO1968 Volume 9 Issue 6 Pages 488-494
Published: December 05, 1968
Released on J-STAGE: March 01, 2010
JOURNAL FREE ACCESSDibutyl tin compounds are widely used as the stabilizer of polyvinyl chloride. The determination of such dibutyl tin compounds used can be successfully carried out by square wave polarography using mercuric pool as the electrode. Various kinds of polyvinyl chloride films were manufactured by use of dibutyl tin compounds (chloride, maleate and laurate) as the stabilizer, then the amount of stabilizer eluted by 0.01N hydrochloric acid, 4v/v% acetic acid or 20v/v% ethanol was measured by polarography. From the results it became clear that the organic tin in the stabilizer is more apt to be eluted by ethanol than that in dibutyl tin maleate. The stabilizer was scarcely eluted from rigid polyvinyl chloride in the experimental conditions.View full abstractDownload PDF (928K) -
Systematic Separation of Carotene, Chlorophyllin Salt and Phytol, and Their UtilizationOtoharu ISHIZAKA, Hideko ISHIHARA, Sadao NIMI1968 Volume 9 Issue 6 Pages 495-498
Published: December 05, 1968
Released on J-STAGE: March 01, 2010
JOURNAL FREE ACCESSIn this paper a systematic separation of carotene, phytol and chlorophyllin salt from methanol extraction of lyophylized Chlorella vulgaris was investigated and the following results were obtained:
1) Chlorophyllin salt, phytol and carotene were obtained in relatively high yield.
2) Copper and iron chlorophyllin salts from chlorella chlorophyll were conformed to the regulations of food additives.
On the cultivation test of Chlorella in Arnon medium added with copper-, iron-, cobalt or zinc-chlorophyllin salt it did not seem to have any influence directly on the multiplication.View full abstractDownload PDF (539K) -
Umeo YOSHINO, Shinko NISHIZAWA, Kunio YAMAUCHI, Tomokichi TSUGO1968 Volume 9 Issue 6 Pages 499-501
Published: December 05, 1968
Released on J-STAGE: March 01, 2010
JOURNAL FREE ACCESSLane-Eynon volumetric method, the Japanese official method for the determination of sucrose in sweetened condensed milk, was compared with the polarimetric method proposed by International Dairy Federation as the International Standard.
The difference between the two methods was-0.49%-+0.33%, and was not considered significant. In sweetened condensed milk (two to eight months after manufacture), 0.030%-0.048% of invert sugar was found. This amount of invert sugar, however, did not interfere the determination of sucrose by either method.
Because of its simplicity and rapidity, Lane-Eynon method is suitable for routine method. But the further studies are needed on the effect of calcium and the change of copper reducing power of lactose at the condition of inversion of sucrose.View full abstractDownload PDF (626K) -
Masahiro IWAIDA, Tsuyako SHIROTORI, Iwao KAWASHIRO1968 Volume 9 Issue 6 Pages 502-505
Published: December 05, 1968
Released on J-STAGE: March 01, 2010
JOURNAL FREE ACCESSDownload PDF (887K) -
Application of Fisher's Orthogonal Polynomial to the Changes of Vitamin C Content in Commercial Soft Drink by the Lapse of TimeKoku MATSUMOTO, Masatoshi INOUE, Tadashi FUJITA, Tomoko OKAMOTO, Toshi ...1968 Volume 9 Issue 6 Pages 506-509
Published: December 05, 1968
Released on J-STAGE: March 01, 2010
JOURNAL FREE ACCESSDownload PDF (581K)
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