活性汚泥中の粘質物成分としてのフィチン酸 : 活性汚泥中の粘質物に関する研究(第3報)

概要

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In a previous paper, the authors demonstrated that mucilage containing protein, nucleic acid and carbohydrates was obtained easily by extracting activated sludge with an EDTA (Ethylenediamineteraacetic acid sodium salts) solution.Further investigation revealed the existence of a considerable amount of phytic acid (inositol hexaphosphate) in the mucilage. Inositol phosphates were extracted from the mucilage with a HCl solution and precipitated with barium acetate. The precipitate was fractionated by an ion exchange column chromatographic technique and phytic acid was identified as a major component of the fraction containing organic phosphates.The content of phytic acid in the activated sludge was estimated as about 0.6 per cent of the dry soilds. Phytic acid was also isolated by extracting the activated sludge directly with 3 N HCl but not with 0.25 N HCl.On the basis of these results, it is supposed that phytic acid and metal ions make a profound contribution to the properties of the activated sludge tested.
社団法人日本生物工学会の論文
1974-05-25