独居後期女性高齢者の栄養摂取状況の事例研究

The population of elderly people in our country is increasing rapidly. One important problem is to establish what conditions are needed for elderly people to have a normal active healthy life. With this in mind, the authors investigated the diet and nutrients of an old old woman who lived alone healthfully and actively. The purpose of this study is to make clear the relationships among health, diet and nutrients. We analyzed her diet and nutrients for one week. Her intake of an antioxidant, vitamin C, was less than 50 % of that necessary. Vitamin D was sufficient with about 200 % of the necessary amount. Folic acid and protein were also sufficient. In this case, vitamin D and protein were thought to contribute to the prevention of osteoporosis and to an active and healthful life. To improve her diet she should increase the amount of food containing vitamin C

乳化剤無添加のジアシルグリセロールで調製した油中水滴型エマルションの乳化特性に及ぼす塩類の影響

The effect of various types of salt on the properties of water-in-oil emulsions prepared with diacylglycerol (DAG) without the addition of an emulsifier was examined. Aqueous salt solutions containing 0, 0.025, 0.05, 0.1, 0.25M and 0.5M concentrations of NaCl, KCl, CaCl_2, MgCl_2, Na_2S0_4, K_2 SO_4 and MgSO_4 were each separately used as aqueous phase. The same volume of DAG and each salt solution was emulsified at 10,000 rpm for 5 min. The emulsion stability, the particle-size distribution and the flow behavior of each emulsion were measured. The emulsion stability was markedly increased by the addition of all types of salt tested, the stability depended on salt concentration up to 0.1M. In spite of the combination of different anion, this effect was stronger for those salts having a divalent cation than a monovalent cation. On the other hand, the particle-size distribution of the all of the emulsions was similar, regardless of the type of salt or its concentration. A high salt concentration had a greater effect and increased for those salts having a divalent cation than a monovalent cation on flow behavior. From these results, we thought that divalent cations in the emulsions would have strengthened the film of the oil-water interface

染色したセルロース繊維の光劣化について

The influence of reactive dyes on the photodegradation rates of cellulosic fabrics (cotton, linen, rayon) were evaluated. Cellulosic fabrics were dyed with reactive dyes and then exposed to xenon arc lamp light for incremental doses for up to 40 days. Changes in color, tensile strength, a degree of polymerization (D.P.) and cellulose crystallinities were evaluated. After exposure each undyed cellulosic fabric showed a greater loss in tensile strength and D.P. than the dyed fabrics. Tensile strength and D.P. of dyed rayon fabrics decreased at a constant rate. The tensile strength of dyed cotton and linen also decreased similar to that of the dyed rayon, but D.P. of cotton and linen didn\u27t decrease severely as the tensile strength. This suggests that cleavages of glycoside linkage as well as pyranose ring and/or hydrogen bonds may occur by exposure to the light. Crystallinity did not change after the exposure. From this result, it was thought that both crystalline and amorphous regions in the fibers degraded