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Volume 5 (1964)
- Issue 6 Pages 415-
- Issue 5 Pages 355-
- Issue 4 Pages 273-
- Issue 3 Pages 189-
- Issue 2 Pages 103-
- Issue 1 Pages 1-
Volume 5, Issue 3
Displaying 1-11 of 11 articles from this issue
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Kishichiro KONDO1964 Volume 5 Issue 3 Pages 189-193
Published: June 05, 1964
Released on J-STAGE: November 22, 2010
JOURNAL FREE ACCESSNo paper on the quantitative analysis of sodium polyacrylate (PA-Na) as synthetic thickner in foods has been represented up to the present. The determination of PA-Na by phenyllithium colour reaction is not suitable, because other polymers indicate similar colours too. But the precipitation method by MgSO4 is effective procedure when PA-Na exists in foods with other legal thickner.
This method is quantitative one and can be applyied to the examination of processed foods. On the quantitative determination of PA-Na in dry vermicelli or bread, the recovery was fairly satisfactory. The recovery from dry vermicell is worse than that from bread, because the former is very viscous. But this extraction will be made easier by methods of enzyme or acid decomposition.
On this determination, the author has need to adjust to pH 7.6-7.8, when phosphate is used, so that PA-Na can be determined quantitatively without the disturbance.View full abstractDownload PDF (682K) -
Determination of Synthetic AntisepticsTadahiro NARAFU, Junko HAYAKAWA, Masuo YAMADA1964 Volume 5 Issue 3 Pages 194-198
Published: June 05, 1964
Released on J-STAGE: November 22, 2010
JOURNAL FREE ACCESSThe determination of synthetic antisepties as food additives is very difficuit and its official method has not yet been given by the authorities.
For the purpose of finding the best method, various analytical methods were examined. The gas chromatographic technique seemed to be the best.
Sorbic acid, benzoic acid, salicylic acid, dehydroacetic acid, methyl naphthoquinone and butyl p-hydroxybenzoate were examined. As their calibration curves were in accordance with the Lambert-Beer Law, they were able to be determined. This technique was applied to jam mixed with sorbic acid, benzoic acid, dehydroacetic acid, methyl naphthoquinone and juice mixed with benzoic acid, dehydroacetic acid. The result has shown fairly good precision with variant coefficient of 3.16%, 2.94%, 4.36%, 3.05%, 3.85% and 3.32% respectively.
Considering that various chemicals are to be determined simultaneously, this method seemed to be the best as compared with the others.
Analytical conditions a, b and c were as follows:
Column: 1m (for a, b and c)
Stationery phase: Apiezone grease M (30%) (for a and b)
Silicone D. C. 550 (for c)
Column temp.: 155° (for a) 190° (for b and c)
Carrier gas: He
Flow rate: 34ml/min
Recorder Sens.: 2mV
Bridge Curr.: 200mA
Chart Speed: 5mm/min
(for a, b and c)View full abstractDownload PDF (635K) -
Kanamori KASAI, Kimiko OBUCHI, Takeo MATSUI, Mitsuo KANBAYASHI1964 Volume 5 Issue 3 Pages 199-205
Published: June 05, 1964
Released on J-STAGE: November 22, 2010
JOURNAL FREE ACCESSNewly developed uses of fat soluble pigments which change in color depending upon the quantity of fatty acids, and of nutrient agar media containing emulsified milk fat are among the methods for the measurement of the lipolitic activities of bacteria for milk fat.
Studies on lipolitic bacteria in raw milk by the use of the Victoria blue base-margarine fat nutrient agar medium which had been deviced recently by E. L. Crossley, resulted in isolating Micrococcus, Alcaligenes, Pseudomonas and other Gram-negative bacilli.
Use of Hugh-Leifson medium and check of pigment producing ability by cytochrome oxidase test seemed helpful for characterization of Gram-negative bacilli.View full abstractDownload PDF (1087K) -
Isolation of the Vibrio parahaemolyticus from Night SoilYoki OSE, Taira IKEDA1964 Volume 5 Issue 3 Pages 206-210
Published: June 05, 1964
Released on J-STAGE: November 22, 2010
JOURNAL FREE ACCESSVibrio parahaemolyticus was isolated from night soil. The night soil was collected from Japanese lavatory (Kumitori-Benjo) in Gifu-shi by honey car.
Relation between the percentage of the strain isolated and the number of patients suffered from Vibrio parahaemolyticus was shown in Fig. 1. Because the night soil was laied by for ca. 20 days in lavatory jar, so the close relation is observed among them.
The experiment showed the hypothesis about the biocycle of Vibrio parahaemolyticus in nature as follows:
Patients suffered from Vibrio parahaemolyticus→faeces contaminated by the microorganismus→collection the contaminated night soil by car→faUing out the night soil to sea water by ship→contamination of the sea water and the subsoil→contamination of the fishes in sea water→man who eat the fishes→Patients→ (upper cycle).View full abstractDownload PDF (890K) -
Kikuo FUJIWARA, Hiroshi KATOH, Kazuyo TATSUMI, Fumie SAWADA, Yasuko TS ...1964 Volume 5 Issue 3 Pages 211-214
Published: June 05, 1964
Released on J-STAGE: November 22, 2010
JOURNAL FREE ACCESSIn the present report, a highly selective tellulite agar medium is described, which has a marked inhibitory effect on growth of many strains of Escherichia, Salmonella, Shigella, Proteus, Bacillus, Staphylococcus, Pseudomonas and most vibrio but allows growth of Vibrio parahaemolyticus and El Tor Vibrio. This medium was named TTGA agar and consists of: gelatin 10g/L, NaCl 30g/L, Na-taurocholate 5g/L, Na2CO3 1g/L, K-tellulite 10mg/L, and agar 15g/L.
The laboratory investigations detecting Vibrio parahaemolyticus in feces of food poisoning patients suggested that this medium is adequate for field trials.View full abstractDownload PDF (599K) -
Chusaburo KOIZUMI, Shoichi MIYAMOTO, Ikuo TOMIYAMA, Akira SUZUKI1964 Volume 5 Issue 3 Pages 215-221
Published: June 05, 1964
Released on J-STAGE: November 30, 2010
JOURNAL FREE ACCESSThis paper describes the results of gas sterilization with ethylen oxide for 13 kinds of the spice in the laboratory and factory scheme.
Living bacteria in spices, such as pepper, white pepper, nutmeg, garlic, onion, mace, ginger, red pepper, and mixed spice, were almost all killed by exposing to 800-1500mg per m3 volume of ethylene oxide vapor for period of 24 hours at about 30°C. But, to achieve sterilization of black pepper, coriander, and curry the double treatments under the same conditions as mentioned above are necessary.View full abstractDownload PDF (1339K) -
Isao NIIYA, Kazuko TAKAGI1964 Volume 5 Issue 3 Pages 222-228
Published: June 05, 1964
Released on J-STAGE: November 22, 2010
JOURNAL FREE ACCESSMargarine samples of salt content of 0, 1, 2, 3, 4 and 5% were tested on the mold inhibition effect.
Growth of mold, giving out of the smell of ester. A.V. and P.O.V. were determined 10 times, every 3 days after preparation of the samples.
The results obtained were as follows:
1) Growth of mold was already observed at the first check on every salt free sample, and at the third or forth check, on the samples of 1% content, never observed apparently, however, on the samples of more than 3% content.
Strength of the smell of ester corresponded with the moldiness of a sample in general.
However, little smell of ester and fermentive smell were given out by the growth of Asp. usamii and by Rhizopus, respectively.
2) Samples of salt content of up to 2%, by the growth of Pen. roqueforti, Pen. caseicolum and Asp. awamori, and those of up to 3%, by Asp. usamii, resulted in the increase of their A.V.
No increase of A.V. was observed of the samples of larger salt content for the molds mentioned above.
In care of Rhizopus, however, increase of A.V. was independent of the salt content. P.O.V. had nothing to do with the growth of the molds.
3) The more moldy a sample was, the higher in A.V., I.V. and I.V. -Th. V. the less in S. V., the lower in m. p. and the paler in color the recovered oil was.View full abstractDownload PDF (893K) -
[in Japanese]1964 Volume 5 Issue 3 Pages 229-232
Published: June 05, 1964
Released on J-STAGE: November 22, 2010
JOURNAL FREE ACCESSDownload PDF (804K) -
[in Japanese]1964 Volume 5 Issue 3 Pages 233-244
Published: June 05, 1964
Released on J-STAGE: November 22, 2010
JOURNAL FREE ACCESS -
[in Japanese], [in Japanese]1964 Volume 5 Issue 3 Pages 244-245
Published: June 05, 1964
Released on J-STAGE: November 22, 2010
JOURNAL FREE ACCESSDownload PDF (262K) -
[in Japanese], [in Japanese]1964 Volume 5 Issue 3 Pages 246-249
Published: June 05, 1964
Released on J-STAGE: November 22, 2010
JOURNAL FREE ACCESS
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