| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method for producing Natto by using a strain of Bacillus natto such as the Bacillus natto deficient in a levan-synthetase gene (sacB) and a sucrose intake protein gene (sacP); and to provide a Natto product produced thereby. <P>SOLUTION: The method for producing the Natto having a high content of a soybean oligosaccharide involves producing the Natto by using the strain of the Bacillus natto deficient in the levan-synthetase gene (sacB) and the sucrose intake protein gene (sacP), or the Bacillus natto having at least no or reduced activity for expressing the sacP to reduce the decomposition of a fructosyl group-containing oligosaccharide derived from the raw material soybean or the added oligosaccharide in the fermentation process of the Natto. The Natto having the high content of the soybean oligosaccharide heightened by inhibiting the decomposition of the sucrose, raffinose and stachyose in the fermentation process is also provided. <P>COPYRIGHT: (C)2007,JPO&INPIT |
