サイロイドの理化学的性状と粉末食品へのサイロイド添加の影響

Syloid is a minute crystal of anhydrous sillica, the use of which has been permitted by F.D.A. in 1966 as an anticaking agent for pulverized food. Sillica is essentially an adsorbent, and used for chromatography to isolate various chemical compounds. It is, therefore, anticipated that it may adsorb the nutrients to decrease the nutritive value of food, when used as the food additive. This report describes some physico-chemical properties of syloid, the determination of syloid added to food, and the adsorption of some nutrients. Recovery of syloid, more than 96 per bent, was determined. Nutrients such as amino acids, vitamin C and glucose were scarcely adsorbed by syloid. Thiamine was a little adsorbed only in an alkaline medium. Either denaturation or decomposition of the nutrients was not observed by paper partition chromatography and absorption spectrum.