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Research activities

In this division, studies on nutrient preservation and health assessment of foods are performed and the examination of specialnutritive foods according to the Low for Improvement of Nutrition and analyses of foods for which analysis was requested are conducted. They include the following:
1. Examination of special nutritive foods.
Acccording to Articles 12 and 16 of the Low for Imporvement of Nutrition,Enriched foods,foods for special dietary uses, processed powdered milk for infants etc. were examined.
In 1993 fiscal year, 365 foods were examined plus 17 foods for which analysis was requested.
2. Research projects.
Our investigations are on the relationship of foods or thier ingredients including nutrients to function of biological body or its dysfunction including diseases and on the analysis of ingredients of foods .
The main studies conducted in this division in 1993 are as follows:
1 ) Hypotensive effects of dietary components
2 ) Mechanism of kidney damage by GSH depletion in vitamin E deficient rats and its protection
3 ) Studies on the identification of food additives other than chemical synthetics (non-chemically synthesized food additives)
4 ) Studies on the protective effects of antioxidative nutrients on chromosomal damage.
5 ) Research on vitamin C in human serum by HPLC
6 ) Research on the role of fat tissue on accumulation and excretion of lipophilic chemicals
7 ) Analysis of contributing factors to induce spontaneous lung tumorigenesis in mice
8 ) Verification of "the iron stores cancer hypothesis" on lung tumorigenesis in mice
9 ) Determination of marker enzymes related to the promotion stage of lung lurmorigenesis
10) Analysis of a mechanism of vitamin E-associated modulating effect on active oxygen generation by alveolar macrophage
11) Nutritional studies on the relationship between aging, circadian rhythmicity and control mechanism of reproductive ability
12) Studies on the effect of magnesium and "asakusa-nori" (a kind of edible sea weed) on calcium, phosphorus and magnesium metabolism