지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
초록· 키워드
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A galactose fermentation bacterium producing lactose from red seaweed, which was known well to compromise the galactose as main reducing sugar, was isolated from button mushroom bed in Buyeo-Gun, Chungchugnamdo province. The lactic acid bacteria MONGB-2 was identified as Lactobacillus paracasei subsp. tolerans by analysis of 16S rRNA gene sequence. When the production of lactic acid and acetic acid by L. paracasei MONGB-2 was investigated by HPLC analysis with various carbohydrates, the strain MONGB-2 efficiently convert the glucose and galactose to lactic acid with the yield of 18.86 g/L and 18.23 g/L, respectively and the ratio of lactic acid to total organic acids was 1.0 and 0.91 g/g for both substrates. However, in the case of acetic acid fermentation, other carbohydrates besides galactose and red seaweed hydrolysate could not be totally utilized as carbon sources for acetic acid production by the strain. The lactic acid production from glucose and galactose in the fermentation time courses was gradually enhanced upto 60 h fermentation and the maximal concentration reached to be 16-18 g/L from both substrates after 48 h of fermentation. The initial concentration of glucose and galactose were completely consumed within 36 h of fermentation, of which the growth of cell also was maximum level. In addition, the bioconversion of lactic acid from the red seaweed hydrolysate by L. paracasei MONGB-2 appeared to be about 20% levels of the initial substrates concentration and this results were entirely lower than those of galactose and glucose showed about 60% of conversion. The apparent results showed that L. paracasei MONGB-2 could produce the lactic acid with glucose as well as galactose by the homofermentation through EMP pathway.
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참고문헌 (18)
참고문헌 신청
Datta, R. / 1995 / Technological and economic-potential of poly(lactic acid) and lactic acid derivatives / FEMS Microbiol. Rev 16:221~231
Gao, M.T / 2005 / Development of a continuous electrodialysis fermentation system for production of lactic acid by Lactobacillus rhamnosus / Process Biochem 40:1033~1036
Garde, A / 2002 / Lactic acid production from wheat straw hemicellulose hydrolysate by Lactobacillus pentosus and Lactobacillus brevis / Bioresour. Technol 81:217~223
Hofvendahl, K. / 1997 / L-Lactic acid production from whole wheat flour hydrolyzate using strains of Lactobacilli and Lactococci / Enzyme Microb. Technol 20:301~307
Jang, S. S / 2012 / Production of mono sugar from acid hydrolysis of seaweed / African J. Biotechnol 11:1953~1963
Gao, M.T / 2005 / Development of a continuous electrodialysis fermentation system for production of lactic acid by Lactobacillus rhamnosus / Process Biochem 40:1033~1036
Garde, A / 2002 / Lactic acid production from wheat straw hemicellulose hydrolysate by Lactobacillus pentosus and Lactobacillus brevis / Bioresour. Technol 81:217~223
Hofvendahl, K. / 1997 / L-Lactic acid production from whole wheat flour hydrolyzate using strains of Lactobacilli and Lactococci / Enzyme Microb. Technol 20:301~307
Jang, S. S / 2012 / Production of mono sugar from acid hydrolysis of seaweed / African J. Biotechnol 11:1953~1963
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