Food Science and Technology Research
Online ISSN : 1881-3984
Print ISSN : 1344-6606
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Contribution of a Fermentation Process using Bacillus subtilis (natto) to High Polyamine Contents of Natto, a Traditional Japanese Fermented Soy Food
Kazuya KobayashiSayaka ShimojoSatoshi Watanabe
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2016 Volume 22 Issue 1 Pages 153-157

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Abstract

We developed a more convenient method for assaying polyamines and re-examined the variation of polyamine contents during each step of the natto production process. The steaming process slightly decreased spermidine in soybeans, and the subsequent fermentation process resulted in 41.1% increase of spermidine and 19.4% reduction of spermine compared with those of steamed soybeans. These results indicated that Bacillus subtilis (natto) produces spermidine during the fermentation process. Further, we determined that spermidine production differs among inoculum strains. It was also suggested that the selection of starter cultures with high spermidine productivity improves polyamine levels in natto.

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© 2016 by Japanese Society for Food Science and Technology
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