おからを原料とする食物繊維の調製法

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  • Production of Okara Food Material Containing High Dietary Fiber

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The removal of water-insoluble protein existing in Okara by chemical and enzymatic treatment had done in order to obtain dietary fiber (DF) of high purity, and DF were observed through scanning electron microscope (SEM). The combining chemical and enzymatic treatments were highly effective in extracting DF of high purity from Okara. The following treatments were performed : Okara was treated chemically at pH10.0, and then by enzymes, protease (method-1), and Okara was treated chemically at pH10.0, followed by enzymes, pectinase first and protease (method-2). Both Okaras were DF of high purity. Okara obtained by method-1 contained 96.3% TDF, 3.9% protein, and that by method-2 contained 98.6% TDF, 1.4% protein. It was observed by SEM that particles of Okara obtained by method-2 was much the same in form as cellulose powder on the market. On the other hand, Okara by method-1 had a large surface area and was porous. Consequently, chemical and enzymatic treatment Okara (CETO) obtained in this study was considered to be used in a similar way to cellulose on the market, and also to be used for adsorbent substances by taking advantage of its porosity.

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