リン酸酸性フッ化物溶液の卵殻表面への影響 : 走査型電顕的研究(自然科学編)

概要

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The aim of this study is to examine the effect of the acidulated phosphate fluoride (APF) treatments on eggshell surfaces and to investigate the acid-resistant mechanism of fluoride on eggshells by scanning electron microscopy (SEM). The part of egg was treated with five-minute APF solution. Some of the eggs were immersed in acetic acid solutions for five minutes. The eggshell specimens were observed by means of SEM. The SEM observations revealed that treated eggshell surfaces of the APF were completely covered with compounds, suggestive of CaF_2 at a depth of 2〜3μm. This layer may, help to prevent demineralization of eggshells. The results suggest that the reaction products produced by treatment with APF are able to effectively reduce solubility of eggshells.
千葉県立衛生短期大学の論文