ソルカフロック、ごぼう残査のミネラル移動に及ぼすpHの影響について

概要

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The influence of pH on binding of calcium, magnesium, zinc, and iron to SF (Solka Flock) and GDF(Gobo-Dietary Fiber) was investigated during 24 hr incubation at 30℃ in buffer solution. 1. The endogenous calcium and magnesium in fiber samples (SF and GDF) were mostly liberated fromfiber tissues at pH 5, zinc and iron remained considerably in the nonmobile form in fiber aatall pH levels. In particular, the endogenous iron in fiber is firmly bound in fiber tissue compared with other minerals. percentage in the mobility of minerals in SF-fiber at all pH levels was higher than that in GDF. 2. The percentage of the values which liberate endogenous calcium and magnesium from SF-fiber in buffer solution in which one ml of a 500 ppm of calcium and one ml of a 100 ppm of magnesium were added was high at all pH levels as compared with that from GDF under the same condition. Inhibitive effect of liberation of calcium from GDF was slightly found by adding calcium to buffer solution on the same condition. Magnesium did not show a significant difference with calcium. When one ml of a 100 ppm zinc and one ml of a 500 ppm iron were added to each buffer solution, zinc in byffer solution significantly increased in the amount of zinc bound to GDF at pH 6.0 and 7.0. Iron in buffer sulution indicated the highest value in the amount of ironbound to two fiber samples at pH 7.0.
松山東雲女子大学・松山東雲短期大学の論文