栄養学雑誌
Online ISSN : 1883-7921
Print ISSN : 0021-5147
ISSN-L : 0021-5147
21 巻 , 6 号
選択された号の論文の4件中1~4を表示しています
  • 菅原 龍幸, 菅原 紀子
    1963 年 21 巻 6 号 p. 155-160
    発行日: 1963年
    公開日: 2010/10/29
    ジャーナル フリー
    The riciprocity between the Quality of dietary protein and the maintenance of liver enzyme activity in rats have been investigated.
    The results are as follows:
    1) We have found paralleled relation between the xanthine oxidase activity of rat's liver and growth in weanling rats fed the same protein by using 15 kinds of food protein respectively. Arginase, however, hasn't brought us such relation.
    2) Next we have found that with the kind of carbohydrate and fat in the diet, there was no influence upon the activity of rat's liver enzyme under fixed condition.
    Judging from these results, we can presume that under the fixed condition the activity response of rat's liver xanthine oxidase can be used as a criterion for estimation of protein quality.
  • 菅原 龍幸, 菅原 紀子
    1963 年 21 巻 6 号 p. 161-166
    発行日: 1963年
    公開日: 2010/10/29
    ジャーナル フリー
    The suitable level of protein in diet for evaluation of food protein quality by using adult rat's liver enzyme activity as a criterion was examined by using 15 kinds of food proteins.
    The results are as follows:
    About xanthine oxidase, the most remarkable paralleled relation between protein quality and enzyme activity were obtained when at 15% and 20% levels of food protein in the diet. About arginase this paralleled relation is found in the case of 20% only.
    From these results and previously reported results, we have divided 15 kinds of food protein used into groups by using xanthine oxidase activity. The 3 groups are found: the groups of eggs with the highest activity, that of soya beans with middle activity, and that of glutens with the lowest activity.
    These results tell us that such results almost correspond with the so far well-known nutritive value of food proteins.
  • 田所 吉忠
    1963 年 21 巻 6 号 p. 167-171
    発行日: 1963年
    公開日: 2010/10/29
    ジャーナル フリー
    Influence of vibration (frequency 12-13/sec., amplitude 1.6-6.8mm, for seven hours daily) on protein metabolism of white rats fed on normal-protein (16%) and low-protein (10%) diets was observed for six weeks.
    Results shows that under the vibration the nitrogen balance is much more positive in the case of the normal-protein diet than in low-protein diet.
    In other words, in such a abnormal environment, the animal needs enough protein in order to reach full growth.
  • 田所 吉忠
    1963 年 21 巻 6 号 p. 172-178
    発行日: 1963年
    公開日: 2010/10/29
    ジャーナル フリー
    (1) 異なる種類の単一蛋白質を含む同一熱量をもつた飼料で一定期間飼育した白鼠に振動を負荷した場合の成長および肝臓 Xanthin-Oxidase 活性度の差を調べた。
    (2) 振動の有無にかかわらずカゼイン食餌は脱脂大豆食餌より窒素利用率は高く, 振動を負荷する事によりいずれの食餌においても窒素の利用率は低下する。
    (3) 肝臓 Xanthin-Oxidase 活性度は飼料蛋白の摂取量を考えた場合, 振動負荷によつて活性度に影響有るものの如く, 振動負荷群はいずれも対称群より強く現われた。一方蛋白質の種類により活性度に差の有ることを認めた。即ちカゼイン食餌群は脱脂大豆食餌群より活性度が強かつた。
    (4) 高蛋白食群は対称群を設定しなかつたため振動による比較が得られなかつたが, 振動負荷にかかわらず他の蛋白食餌群 (対称群を含む) に比し優位の成長を示した。即ち振動負荷によつても成長には大きな影響はないものの如く思われる。
    即ち振動を負荷することにより食欲の減退, 飼料摂取量の減少より蛋白分解酵素の分泌が減少し体内蛋白代謝が低下するものの如く, 通常の成長を維持するためには蛋白摂取を相当増加する必要があるようだ。
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