The Japanese Journal of Nutrition and Dietetics
Online ISSN : 1883-7921
Print ISSN : 0021-5147
ISSN-L : 0021-5147
Volume 47, Issue 2
Displaying 1-5 of 5 articles from this issue
  • Nutritional Education and Nutritional Diagnosis
    Seiki Nambu
    1989 Volume 47 Issue 2 Pages 63-76
    Published: 1989
    Released on J-STAGE: April 30, 2010
    JOURNAL FREE ACCESS
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  • Mitsuko Okazaki, Yuko Yagi
    1989 Volume 47 Issue 2 Pages 77-84
    Published: 1989
    Released on J-STAGE: April 30, 2010
    JOURNAL FREE ACCESS
    We examined the relationship between snacks and oral health in 3-year-old children living in a city (155 children) and a rural village (41 children). Mothers accompanying children for the health checks at the health centers were asked to fill in the questionnaires. Following results were obtained.
    1) Daily between-meal snacks
    There were more children living with their grandparents in the rural area than in the city. About half of rural mothers had jobs outside home. There were more children in the city than in the village who were given between-meal snacks regularly. The rural children drank much more amount of lactbacillus beverages than those in the city.
    2) Oral health
    The prevalence of children with caries was lower in the city than in the rural village…approximately half of them were caries-free, while the number of children with B type caries was higher in the rural area than in the city.
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  • Fumiko Hirahara, Yoshiko Koike
    1989 Volume 47 Issue 2 Pages 85-91
    Published: 1989
    Released on J-STAGE: April 30, 2010
    JOURNAL FREE ACCESS
    Tocopherol (Toc) contents in nine cultivar of sweet potato tubers with known times and places of harvest were determined by the high performance liquid chromatography method, and changes in the content according to cooking methods. The following result was obtained.
    1) Alpha-toc content was distributed in the order of the center>upper part>bottom part. But the distribution was not significantly different because of the wide deviations among individual values. There was also no difference in the toc content according to size.
    2) The toc contents before and after cooking with different methods were compared. After roasting or microwave oven cooking, the toc content remained in quantities in the order of the bottom part>upper part>center. Steaming did not cause changes according to the parts of tuber.
    3) Alpha-toc content difference according to cultivar was very small, which was attributed to different conditions at the places of harvest. This difference was especially noted in Simon.
    4) As for changes in α-toc, that after heating was 41% of that of uncooked tubers. Compared to other species, Simon showed a high decomposition ratio for toc even after the microwave treatment which does not decompose the content so much. The remainder was much less after steaming or roasting.
    5) Loss of water after cooking was considerably large in the order of microwave cooking<steaming<roasting. It was concluded that sweet potato tuber is one of the important sources of vitamin E similarly to edible oils because of a comparatively large amount ingested at one time despite its losses after cooking.
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  • Itaro Oguni, Keiko Nasu, Setsuko Kanaya, Yuichi Ota, Shigehiro Yamamot ...
    1989 Volume 47 Issue 2 Pages 93-102
    Published: 1989
    Released on J-STAGE: April 30, 2010
    JOURNAL FREE ACCESS
    Vital statistics for Japanese people showed that the death rate from cancer, especially stomach cancer in both males and females in Shizuoka Prefecture is much lower than the average of Japanese people. We further investigated this phenomenon epidemiologically and experimentally. The results were as follows:
    1) The standardized mortality ratio (SMR) for cancer of all sites and stomach cancer in the midwest areas of Shizuoka Pref. where green tea is the staple product was much lower compared with the national avarage in both sexes.
    2) Significant differences in habitual green tea drinking of the inhabitants between “3K Town” with low SMR and “O Town” with high SMR due to stomach cancer were observed in both sexes.
    3) The extracts from fresh green tea leaves were effective on growth inhibitory activity against mouse sarcoma 180.
    These data suggest the possibility that the green tea may be capable of diminishing cancer risk.
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  • Shoji Azami, Shizuko Hiratsuka, Takao Kitano, Takatoshi Esashi
    1989 Volume 47 Issue 2 Pages 103-112
    Published: 1989
    Released on J-STAGE: April 30, 2010
    JOURNAL FREE ACCESS
    The experiment was carried out to observe the effect of dietary protein quality and quantity on urinary calcium (Ca), phosphorus (P) and magnesium (Mg) excretions in female rats.
    Casein and soy protein isolates were used as a protein source, and a protein content in the diet was 20% or 40% respectively.
    Female Fischer-strain rats of 4 weeks of age were divided into groups of 20% casein diet (C20), 40% casein diet (C40), 20% soy protein isolate diet (S20) and 40% soy protein isolate diet (S40), and were fed one of the experimental diets for 25 weeks. In 1, 13 and 25 weeks, Ca, P and Mg balance studies were done.
    After the 25 weeks balance studies, rats were killed and the Ca, P and Mg content of serum, kidney and right femur were determined.
    The results were as follows:
    1) Body weight gain was not significantly different among the four groups.
    2) Calcium and P absorption decreased with age but were not affected by the diets, whereas C40 group exhibited higher urinary Ca, P and Mg excretions. Ca, P and Mg retention also decreased with age.
    3) Soy protein isolate diets always indicated high Mg retention than the casein diets. On the other hand, C40 group showed the highest urinary Mg excretion and gave nagative Mg balance at 25 weeks.
    4) The weight of fat-free femur, the ash content of per gram of femur, and the Ca content and Ca/P ratio of femur did not show a significant difference among the four groups. But the Ca content of femur per 100g body weight significantly decreased in the C40 group than in the S40 group.
    5) The kidney weights of the 40% protein diet groups significantly increased than the 20% protein diet groups. The calcium and Mg content of per gram of the kidney in the 40% protein diet groups significantly decreased than the 20% protein diet groups.
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