抄録
Properties and production of xylooligosaccharide with a bioreactor were studied. Substrate (xylan) was packed in a reactor. And buffer with an amount of enzyme was passed through the reactor. Enzyme absorbed to xylan hydrolyzed xylan to form xylooligosaccharide. Xylooligosaccharide was eluted earlier than the enzyme from the reactor. The amount of enzyme to form xylooligosaccharide with this reactor was less than that with a batch reactor. Sweetness of xylobiose (main component of xylooligosaccharides) was 30% that of sucrose. Xylobiose solution showed lower water activity than sucrose and maltose solution. The amount of non-freezing water of xylobiose solution was larger than that of sucrose and maltose. Administration of xylooligosaccharide promoted the growth of bifidobacteria in human intestine, lowered fecal pH, and helped to maintain the fecal water content at an optimal 80 %.
