Isolation and characterization of novel S-equol-producing bacteria from brines of stinky tofu, a traditional fermented soy food in Taiwan

References

• Abiru Y, Kumemura M, Ueno T, Uchiyama S, Masaki K. 2012. Discovery of an S-equol rich food stinky tofu, a traditional fermented soy product in Taiwan. Int J Food Sci Nutr 63:964–970
   PubMed Web of Science ®Google Scholar
• Adlercreutz H. 2002. Phyto-oestrogens and cancer. Lancet Oncol 3:364–373
   PubMed Web of Science ®Google Scholar
• Akaza H, Miyanaga N, Takashima N, Naito S, Hirao Y, Tsukamoto T, Fujioka T, et al. 2004. Comparisons of percent equol producers between prostate cancer patients and controls: case-controlled studies of isoflavones in Japanese, Korean and American Residents. Jpn J Clin Oncol 34:86–89
   PubMed Web of Science ®Google Scholar
• Aso T, Uchiyama S, Matsumura Y, Taguchi M, Nozaki M, Takamatsu K, Ishizuka B, et al. 2012. A natural S-(-)equol supplement alleviates hot flushes and other menopausal symptoms in equol nonproducing postmenopausal Japanese women. J Women’s Health 21:92–100
   PubMed Web of Science ®Google Scholar
• Barrow GI, Feltham RKA. 1993. Cowan and Steel’s manual for the identification of medical bacteria. 3rd ed. Cambridge, UK: Cambridge University Press
   Google Scholar
• Chao SH, Tomii Y, Watanabe K, Tsai YC. 2008. Diversity of lactic acid bacteria in fermented brines used to make stinky tofu. Int J Food Microbiol 123:134–141
   PubMed Web of Science ®Google Scholar
• Ezaki T, Hashimoto Y, Yabuuchi E. 1989. Fluorometric deoxyribonucleic acid-deoxyribonucleic acid hybridization in microdilution wells as an alternative to membrane filter hybridization in which radioisotopes are used to determine genetic relatedness among bacterial strains. Int J Syst Bacteriol 39:224–229
   Google Scholar
• Jin JS, Kitahara M, Sakamoto M, Hattori M, Benno Y. 2010. Slackia equolifaciens sp. nov., a human intestinal bacterium capable of producing equol. Int J Syst Evol Microbiol 60:1721–1724
   PubMed Web of Science ®Google Scholar
• Jou HJ, Tsai PJ, Tu JH, Wu WH. 2013. Stinky tofu as a rich source of bioavailable S-equol in Asian diets. J Functional Foods 5:651–659
   Web of Science ®Google Scholar
• Katayama-Fujimura Y, Komatsu Y, Kuraishi H, Kaneko T. 1984. Estimation of DNA base composition by high performance liquid chromatography of its nuclease P1 hydrolysate. Agric Biol Chem 48:3169–3172
   Web of Science ®Google Scholar
• Kudou S, Fleury Yvette, Welti D, Magnolato D, Uchida T, Kitamura K, Okubo K. 1991. Malonyl isoflavone glycosides in soybean seeds (Glycine max MERRILL). Agric Biol Chem 55:2227–2233
   Web of Science ®Google Scholar
• Lundh TJ, Pettersson H, Kiessling KH. 1988. Liquid chromatographic determination of the estrogens daidzein, formononetin, coumestrol, and equol in bovine blood plasma and urine. J Assoc Off Anal Chem 71:938–941
   PubMedGoogle Scholar
• Marmur J. 1961. A procedure for the isolation of deoxyribonucleic acid from micro-organisms. J Mol Biol 3:208–218
   Web of Science ®Google Scholar
• Maruo T, Sakamoto M, Ito C, Toda T, Benno Y. 2008. Adlercreutzia equolifaciens gen. nov., sp. nov., an equol-producing bacterium isolated from human faeces, and emended description of the genus Eggerthella. Int J Syst Evol Microbiol 58:1221–1227
   PubMed Web of Science ®Google Scholar
• Matthies A, Clavel T, Gutschow M, Engst W, Haller D, Blaut M, Braune A. 2008. Conversion of daidzein and genistein by an anaerobic bacterium newly isolated from the mouse intestine. Appl Environ Microbiol 74:4847–4852
   PubMed Web of Science ®Google Scholar
• Matthies A, Blaut M, Braune A. 2009. Isolation of a human intestinal bacterium capable of daidzein and genistein conversion. Appl Environ Microbiol 75:1740–1744
   PubMed Web of Science ®Google Scholar
• Minamida K, Tanaka M, Abe A, Sone T, Tomita F, Hara H, Asano K. 2006. Production of equol from daidzein by gram-positive rod-shaped bacterium isolated from rat intestine. J Biosci Bioeng 102:247–250
   PubMed Web of Science ®Google Scholar
• Nakagawa Y, Sakane T, Suzuki M, Hatano K. 2002. Phylogenetic structure of the genera Flexibacter, Flexithrix, and Microscilla deduced from 16S rRNA sequence analysis. J Gen Appl Microbiol 48:155–165
   PubMed Web of Science ®Google Scholar
• Saitou N, Nei M. 1987. The neighbor-joining method: a new method for reconstructing phylogenetic trees. Mol Biol Evol 4:406–425
   PubMed Web of Science ®Google Scholar
• Setchell KDR, Brown NM, Olsen EL. 2002. The clinical importance of the metabolite equol – a clue to the effectiveness of soy and its isoflavone. J Nutr 132:3577–3584
   PubMed Web of Science ®Google Scholar
• Setchell KDR, Clerici C, Lephart ED, Cole SJ, Heenan C, Castellani D, Wolfe BE, et al. 2005. S-Equol, a potent ligand for estrogen receptor β, is the exclusive enantiomeric form of the soy isoflavone metabolite produced by human intestinal bacterial flora. Am J Clin Nutr 81:1072–1079
   PubMed Web of Science ®Google Scholar
• Shimada Y, Yasuda S, Takahashi M, Hayashi T, Miyazawa N, Sato I, Abiru Y, et al. 2010. Cloning and expression of a novel NADP(H)-dependent daidzein reductase, an enzyme involved in the metabolism of daidzein, from equol-producing Lactococcus strain 20–92. Appl Environ Microbiol 76:5892–5901
   PubMed Web of Science ®Google Scholar
• Shimada Y, Takahashi M, Miyazawa N, Ohtani T, Abiru Y, Uchiyama S, Hishigaki H. 2011. Identification of two novel reductases involved in equol biosynthesis in Lactococcus strain 20–92. J Mol Microbiol Biotechnol 21:160–172
   PubMed Web of Science ®Google Scholar
• Shimada Y, Takahashi M, Hayashi T, Miyazawa N, Abiru Y, Uchiyama S, Hishigaki H. 2012. Identification of a novel dihydrodaidzein racemase essential for boisysthesis of equol from daidzein in Lactococcus sp. strain 20–92. Appl Environ Microbiol 78:4902–4907
   PubMed Web of Science ®Google Scholar
• Stackebrandt E, Ebers J. 2006. Taxonomic parameters revisited: tarnished gold standards. Microbiol Today 33:152–155
   Google Scholar
• Tamura K, Peterson D, Peterson N, Stecher G, Nei M, Kumar S. 2011. MEGA5: molecular evolutionary genetics analysis using maximum likelihood, evolutionary distance, and maximum parsimony methods. Mol Biol Evol 28:2731–2739
   PubMed Web of Science ®Google Scholar
• Thompson JD, Higgins DG, Gibson TJ. 1994. CLUSTAL W: improving the sensitivity of progressive multiple sequence alignment through sequence weighting, position-specific gap penalties and weight matrix choice. Nucleic Acids Res 22:4673–4680
   PubMed Web of Science ®Google Scholar
• Tindall BJ, Rossello-Mora R, Busse HJ, Ludwig W, Kampfer P. 2010. Notes on the characterization of prokaryote strains for taxonomic purposes. Int J Syst Evol Microbiol 60:249–266
   PubMed Web of Science ®Google Scholar
• Toda T, Tamura J, Okuhira T. 1997. Isoflavone content in commercial soybean foods. FFI J 172:83–89
   Google Scholar
• Tousen Y, Ezaki J, Fujii Y, Ueno T, Nishimuta M, Ishimi Y. 2011. Natural S-equol decreases bone resorption in postmenopausal, non-equol-producing Japanese women: a pilot randomized, placebo-controlled trial. Menopause 18:563–574
   PubMed Web of Science ®Google Scholar
• Tsuji H, Moriyama K, Nomoto K, Miyanaga N, Akaza H. 2010. Isolation and characterization of the equol-producing bacterium Slackia sp. strain NATTS. Arch Microbiol 192:279–287
   PubMed Web of Science ®Google Scholar
• Tsuji H, Moriyama K, Nomoto K, Akaza H. 2012. Identification of an enzyme system for daidzein-to-equol conversion in Slackia sp. strain NATTS. Appl Environ Microbiol 78:1228–1236
   PubMed Web of Science ®Google Scholar
• Uchino Y, Yokota A, Sugiyama J. 1997. Phylogenetic position of the marine subdivision of Agrobacterium species based on 16S rRNA sequence analysis. J Gen Appl Microbiol 43:243–247
   PubMed Web of Science ®Google Scholar
• Uchiyama S, Ueno T, Masaki K, Shimizu S, Aso T, Shirota T. 2007a. The cross-sectional study of the relationship between soy isoflavones, equal and the menopausal symptoms in Japanese women. J Jpn Menopause Soc 15:28–37
   Google Scholar
• Uchiyama S, Ueno T, Suzuki T. 2007b. Identification of a newly isolated equol-producing lactic acid bacterium from the human feces. J Intest Microbiol 21:217–220
   Google Scholar
• Wang XL, Hur HG, Lee JH, Kim KT, Kim SI. 2005. Enantioselective synthesis of S-equol from dihydrodaidzein by a newly isolated anaerobic human intestinal bacterium. Appl Environ Microbiol 71:214–219
   PubMed Web of Science ®Google Scholar
• Wayne LG, Brenner DJ, Cowell RR, Grimont PAD, Kandler O, Krichevsky MI, Moore LH, et al. 1987. Report of the ad hoc committee on reconciliation of approaches to bacterial systematics. Int J Syst Bacteriol 37:463–464
   Google Scholar
• Yokoyama S, Suzuki T. 2008. Isolation and characterization of a novel equol-producing bacterium from human feces. Biosci Biotechnol Biochem 72:2660–2666
   PubMed Web of Science ®Google Scholar
• Yu ZT, Yao W, Zhu WY. 2008. Isolation and identification of equol-producing bacterial strains from cultures of pig faeces. FEMS Microbiol Lett 282:73–80
   PubMed Web of Science ®Google Scholar