Nihon Chikusan Gakkaiho

Effect of Terephthalic Acid on Plasma Thiamine Level

II. Relationship between Plasma Thiamine Level and Terephthalic Acid Amounts Supplemented in Diet

Akio HOSHI, Reiko YANAI, Kazuo KURETANI

1967 Volume 38 Issue 1 Pages 1-4
Published: January 25, 1967
Released on J-STAGE: March 10, 2008

DOIhttps://doi.org/10.2508/chikusan.38.1

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Previous work in this series1) has shown the potentiating effect of terephthalic acid (TPA) upon the thiamine contents in blood plasma: the thiamine level was elevated and the high content of thiamine was maintained for a long period with a diet containing TPA at a ratio of 0.5%.
The present investigation was undertaken to see if small amounts of TPA could elevate the thiamine level in blood plasma. The amounts of TPA in the diet were diminished stepwise and changes of thiamine contents in blood plasma were determined.

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Studies on Thermal Denaturation of Hides and Leathers

Part III. Effect of Heating on Chrome Tanned Leathers at Relatively Higher Temperature

Tomoyoshi KUBO, Daiki HOZAN

1967 Volume 38 Issue 1 Pages 5-10
Published: January 25, 1967
Released on J-STAGE: March 10, 2008

DOIhttps://doi.org/10.2508/chikusan.38.5

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In this paper, we carried out the experiments on thermal stability of chrome tanned leathers having different contents of Cr2O3(0.5-7.5%, based on the hide substance), that is, the changes of physical and chemical properties of chrome leathers by dry heat at 100°-190°C were studied.
By determining tensile strength, elongation at breaking point and tortion flexibility after heating, it was recognized that all the leathers suffered from thermal deterioration of their physical properties. However, the degree of thermal change decreased with increasing fixation of Cr2O3 in the leathers. The change in case of high moisture, as the leathers treated at high temperature, was stronger than that in low moisture contents of leathers.
Chrome leathers, as compared with untanned hides, were very small in the amounts of soluble protein in water extracts. By heating chrome leathers from 100° to 130°C, the amounts of soluble protein did not change, but they increased with rising temperature from 160°to 190°C with high moisture contents.

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Calcium Metabolism in Laying Hens

I. Effects of Time of Feed Intake for Eggshell Deposition and Excretion of Calcium

Hiroshi ITOH, Tadashi HATANO

1967 Volume 38 Issue 1 Pages 11-17
Published: January 25, 1967
Released on J-STAGE: March 10, 2008

DOIhttps://doi.org/10.2508/chikusan.38.11

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Sixteen laying hens were orally administered with radiocalcium at 10am (Group A) or 4pm (Group B) continuously for ten days (Period 1). The eggshell deposition and daily excretion of Ca⁴⁵ were compared between Group A and B in Period 1 and between those of the following 10-day period without Ca⁴⁵ administration (Period 2).
Average egg production, egg weight and eggshell calcium content of both groups was 85%, 56g and 1955mg, respectively. Radiocalcium contents of eggshells in Group A averaged 57% and 71% in Group B during Period 1. Less variations of eggshell uptake of Ca⁴⁵ were observed during the 2nd to 10th day of Period 1 in both groups. Daily excretion of Ca⁴⁵ in Group A and B was 30 and 25%, respectively. The higher excretion of Ca⁴⁵ was observed in the day with no eggshell formation. It appears that the dietary calcium ingested prior to the beginning of and during the eggshell formation (mainly in the evening) is actively absorbed and immediately utilized for the eggshell calcification as compared to that ingested several hours prior to the shell formation (mainly in the morning).
The radiocalcium deposited on the eggshells produced in Period 2 have been derived from the skeletal radiocalcium stored during Period 1. The shell uptake of Ca⁴⁵ at the first day of Period 2 was about one-half of that at the last day of Period 1 in Group A, and only onefourth in Group B. This value of Group A was higher than that of Group B, indicating the higher skeletal storage of Ca⁴⁵ in Group A during Period 1. Changes of the eggshell to excreta ratios of radiocalcium content in both periods suggest that some of the decalcified skeletal radiocalcium are utilized for the eggshell formation and less are excreted endogenously
In general, it is considered that the eggshell deposition rates of dietary calcium in the laying hens are directly affected by the differences of time of feed intake and the calcium excretion is partially affected by the eggshell formation in uterus.

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Studies on Nucleic Acid Derivatives in Cheese

I. Studies on the Changes of Acid-Soluble Nucleotides in White Mold Cheese Ripened by Penicillium caseicolum during Ripening

Tomokichi TSUGO, Kokichi TANIGUCHI, Chin-Wen LIN

1967 Volume 38 Issue 1 Pages 18-23
Published: January 25, 1967
Released on J-STAGE: March 10, 2008

DOIhttps://doi.org/10.2508/chikusan.38.18

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Acid soluble nucleotides in white mold cheese ripened by Penicillium caseicolum during the period of ripening were fractionated by ion exchange column chromatography. Each fraction obtained was identified by means of determining phosphorus, ribose and bases, and submitted to paper chromatography.
The nucleotide compounds isolated from the white mold cheese and identified were: 3'-CMP, cyclic CMP, 5'-UMP, GTP, UTP, ATP and CTP. Each content of these compounds per 100 g. of cheese ripened was 8.6, 13.8, 4.7, 3.2, 4.7, trace and 25.9 pM, respectively, and the total content of nucletides was 60-120 pM, but these nucleotide compounds were not related to palatable taste. It was found that the total content of nucleotides had close relationship to the stage in cheese-ripening and that the appearance of the majority of these nucleotides in cheese was presumed to be originated from the autolysis of pen. caseicolum used as a startar.

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Influence of Excessive Single Amino Acid Intake to Free Amino Acid Potencies of Chick Organs

I. Excessive Glycine and Free Amino Acid Patterns of Chick Liver

Kei-ichiroh SUGIMURA, Sumimaro C. ITO, Shin-ichi HONDA, Hiroshi KATAYA ...

1967 Volume 38 Issue 1 Pages 24-29
Published: January 25, 1967
Released on J-STAGE: March 10, 2008

DOIhttps://doi.org/10.2508/chikusan.38.24

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Test chicks were allowed to take the following feeds: One commercial chick feed for starting chick 1 week after hatching, two basal feeds containing 16 and 20% protein and two feeds of 4% glycine added to each of the basal feeds. Free amino acids of liver of the chicks thus maintained were determined by microbiological assay to which those of the standard feed, 4% glycine added feed groups were subjected. Among the free amino acid values of liver of the test chicks, free glycine and serine value in glycine added feeds in the 3rd week subjects were found to increase markedly. No other systematic alteration in the free amino acid values was observed throughout the study. Relationships among the growth gain, potencies of the amino acids in question and variations in the behavior of the amino acids in the week agee were discussed.

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Studies on the Intergeneric Hybrids Between Chicken and Quail

I. Production of Chicken-Quail Hybrids

Seiki WATANABE, Takashi AMANO

1967 Volume 38 Issue 1 Pages 30-32
Published: January 25, 1967
Released on J-STAGE: March 10, 2008

DOIhttps://doi.org/10.2508/chikusan.38.30

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[in Japanese]

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