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Volume 13 (1972)
- Issue 6 Pages 499-
- Issue 5 Pages 359-
- Issue 4 Pages 257-
- Issue 3 Pages 173-
- Issue 2 Pages 115-
- Issue 1 Pages 1-
Volume 13, Issue 3
Displaying 1-7 of 7 articles from this issue
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Toshiki MORICHI1972 Volume 13 Issue 3 Pages 173-183
Published: June 05, 1972
Released on J-STAGE: February 22, 2010
JOURNAL FREE ACCESSDownload PDF (2444K) -
Distribution and Deposition of β-BHC in Rat TissuesKeiichi OSHIBA, Hyozo KAWAKITA1972 Volume 13 Issue 3 Pages 184-188
Published: June 05, 1972
Released on J-STAGE: February 22, 2010
JOURNAL FREE ACCESSRats were fed with a diet containing 10ppm of β-BHC and sacrificed at regular intervals to determine the resultant deposition of the chemical in their tissues.
There were no noticeable changes in the body weights and the organs examined after 56 days of feeding with the test diet.
The concentration of the deposited chemical in various organs was found to reach equilibrium levels within four weeks. However, the deposition in white adipose tissue continued to increase through the experimental period.
The concentration ratio (deposition in tissue (μg/g) /concentration in blood (μg/ml)) of the chemical based on this of blood were between 3 to 20 in various organs, while above 250 in white adipose tissue.View full abstractDownload PDF (829K) -
Effect of Lipid Metabolism on Reduction of the BHC Deposition in Rat TissuesKeiichi OSHIBA, Hyozo KAWAKITA1972 Volume 13 Issue 3 Pages 189-194
Published: June 05, 1972
Released on J-STAGE: February 22, 2010
JOURNAL FREE ACCESSThe purpose of experimental study was to clarify whether the BHC deposition in organs and tissues of rats reduced under the conditions to accelerate the lipid metabolism. The results obtained are as follows:
1) Dosing dietary fat as a way to reduce the BHC deposition in the organs and tissues, resulted in the remarkable decrease of γ-BHC deposition while reduction in β-BHC deposition was found to be slow.
2) By rendering the BHC-fed rats to a starvation condition, it was recognized that the γ-BHC deposition reduction was higher while the β-BHC deposition reduction lower, and the β-BHC from the adipose tissue moved and redeposited into other organs and tissues.
3) Dosing hormones accelerating fat movement for the reduction of γ-BHC deposition in the organs and tissues, resulted in significant reduction of γ-BHC deposition in the organs except liver and adipose tissue.
4) It was suggested that the transportation of BHC to the organs and tissues was related to the lipid metabolism.View full abstractDownload PDF (1239K) -
Katsuhiko IKEBE, Yukio TANAKA, Ryoichi TANAKA, Nobuharu KUNITA1972 Volume 13 Issue 3 Pages 195-204
Published: June 05, 1972
Released on J-STAGE: February 22, 2010
JOURNAL FREE ACCESSThe optimum conditions for the determination of manganese, copper, lead and zinc in unpolished rice by atomic absorption spectrophotometry were investigated, and the satisfactory result was obtained in accuracy and rapidness.
The metals in the samples were extracted by nitric acid for the analysis of atomic absorption spectrophotometry, after ashing them by a low temperature asher using the oxygen plasma.
The mean values of the recovery rates in ten experiments for manganese, copper, lead and zinc were 99.3%, 100.5%, 98.3%, and 101.6%, respectively, and liner calibration curves were obtained in the range from 0.5ppm to 2.0ppm for manganese and zinc, and from 1.0ppm to 4.0ppm for copper and lead.
From these results, it was found that the low temperature ashing-acid extraction method is available for the simultaneous determinations of several metals in the unpolished rice.
The concentration of heavy metals in the 60 samples of unpolished rice were determined by the method above mentioned.View full abstractDownload PDF (1419K) -
Tatsuo OZAWA, Yoshiyuki NAKAMURA, Kumiko HIRAGA1972 Volume 13 Issue 3 Pages 205-207
Published: June 05, 1972
Released on J-STAGE: March 25, 2010
JOURNAL FREE ACCESSFor evaluation of antioxidant activity, polarographic oxygen analyzer was applied to measure oxygen absorption following the trial by Tappel, A. L. et. al. and Yagi, K..
In the measurement, a preparation procedure of emulsified test solution and an indication of degree of antioxidative activity, namely, protective index, were improved. By this improvement, reproducibility was raised and it was noticed that peroxide values were proportional to the amounts of oxygen absorbed at the first stage of lipid autoxidation in the reaction system, linoleic acid emulsion-ferrous sulfate-antioxidant.View full abstractDownload PDF (635K) -
Tatsuo OZAWA, Yoshiyuki NAKAMURA, Kumiko HIRAGA1972 Volume 13 Issue 3 Pages 208-211
Published: June 05, 1972
Released on J-STAGE: February 22, 2010
JOURNAL FREE ACCESSBy use of Polarographic oxygen analyzer, the effects of antioxidants were investigated on thefollowing subjects.
1. The antioxidative activity of several types of antioxidant, such as phenolic, quinolinic, flavonoid compounds was measured and the strength of antioxidant activity was found to be in following order butyl hydroxy anisole (BHA) >quercetin>ethoxyquin>dl-α-tocopherol.
2. The activity of the five antioxidants approved as food additives was found to be in order BHAle≤dibutyl hydroxy toluene (BHT) >nordihydroguaiaretic acid (NDGA) >propyl gallate (PG) >ethyl protocatechuate (EPCA). Protective index of fifteen compounds in linoleic acid was measured by this method and the data showing the same tendency was obtained as those reported by Lew by use of Warburg's apparatus.
3. Effective concentrations of antioxidants were found to be 5×10-3 for BHA and BHT, 1×10-3M for NDGA, 5×10-2M for PG, 1×10-1M for EPCA per M of linoleic acid, and the addition of increased quantities of the antioxidants above this level was not effective.
4. The relationship between the antioxidant effect of alkyl gallates and the length of alkyl chain was researched and it was found that twelve carbon-numbered alkyl group showed the maximum activity.View full abstractDownload PDF (587K) -
Kikuo FUJIWARA, Nobuyuki KURITA1972 Volume 13 Issue 3 Pages 212-213
Published: June 05, 1972
Released on J-STAGE: February 22, 2010
JOURNAL FREE ACCESSA procedure to detect Staphylococcal enterotoxin C in foods was devised.
The method is as follows.
1. Sample is homogenized in tap water at room temperature.
2. The homogenate is centrifuged and the supernatant is concentrated by dialysis against polyethylene glycol.
3. A paper disc immersed with this concentrate is placed on agar plate for precipitation test with antienterotoxin.
Food samples containing more than 0.4μg enterotoxin C per gram showed a precipitation line of identity with this procedure.View full abstractDownload PDF (721K)
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