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11.
Oh Byeong Seob Kim Ji-Sun Yu Seung Yeob Ryu Seoung Woo Park Seung-Hwan Kang Se Won Park Jam-Eon Choi Seung-Hyeon Han Kook-Il Lee Keun Chul Eom Mi Kyung Suh Min Kuk Kim Han Sol Lee Dong Ho Yoon Hyuk Kim Byung-Yong Lee Je Hee Lee Jung-Sook Lee Ju Huck 《Journal of microbiology (Seoul, Korea)》2020,58(2):99-104
Journal of Microbiology - An obligately anaerobic, Gram-stain-negative, non-motile, non-spore-forming, and coccobacilli-shaped bacterial strain, designated KGMB03119T, was isolated from human... 相似文献
12.
Ki Beom Lee Russell Cail Seung-Hyeon Moon Man Bock Gu 《Biotechnology and Bioprocess Engineering》1999,4(2):93-97
The acquired freeze-thaw tolerance was investigated forLactococcus lactis ssp.diacetylactis. Pretreatment of microorganisms at less severe temperatures to initiate cold tolerance gaveL. lactis ssp.diacetylactis improved cell viability after successive freezings and thawings. The ability of cells to survive freeze-thaw was dependent
on factors experienced prior to freezing. Factors affecting lactic acid bacteria survival during freeze-thaw cycles were found
to be different diluents, growth phase, and different cold temperatures. Viability experiments showed that this strain displaying
cold shock cryotolerance had an improved survival capacity in stationary phase. The plasmid contents of lactic acid bacteria
isolated from different types, DRC-2 and DRC-2C, were examined and compared with the plasmid contents of culture collection
strains both before and after cold shock treatment. Using agarose gel electrophoresis, no obvious correlation between the
cold shock response and the number of plasmids in the cell could be observed. 相似文献
13.
Kibeom Lee Jeewon Lee Yang-Hoon Kim Seung-Hyeon Moon Young-Hoon Park 《Current microbiology》2001,43(6):383-390
With four Lactobacilli--L. delbrueckii subsp. lactis (ATCC 12315), L. casei (NRRL-B1445), L. delbrueckii (NRRL-B445), and L. heveticus (NRRL-B1937)--the characteristics of cell growth and production of lactate and amino acids were investigated. Especially, the time-course variation in concentration of amino acids (classified into alanine, serine, aspartate, glutamate, aromatic amino acid, and histidine families) was estimated in detail, and the results were systematically compared. It was elucidated that L. delbrueckii (NRRL-B445) and L. helveticus (NRRL-B1937) had quite different characteristics in growth, lactic acid synthesis, and amino acid production. L. helveticus (NRRL-B1937) was superior in the production of amino acids as well as in cell growth, but showed very poor ability in lactic acid production. However, L. delbrueckii (NRRL-B445) showed higher yield of lactic acid despite repressed cell growth, but suffered from severe amino acid deficiency in culture. By modulating the initial concentration of each strain in the mixed culture containing both L. delbrueckii (NRRL-B445) and L. helveticus (NRRL-B1937), the lactic acid production (i.e., the amount of lactic acid produced and lactic acid yield to glucose consumed) was significantly improved, presumably via symbiotic interaction between the two strains. 相似文献
14.
This paper reports the formation of veratraldehyde by electroenzymatic oxidation of veratryl alcohol (3,4-dimethoxybenzyl alcohol) hybridizing both electrochemical and enzymatic reactions and using lignin peroxidase. The novel electroenzymatic method was found to be effective for replacement of hydrogen peroxide by an electrochemical reactor, which is essential for enzyme activity of lignin peroxidase. The effects of operating parameters such as enzyme dosage, pH, and electric potential were investigated. Further, the kinetics of veratryl alcohol oxidation in an electrochemical reactor were compared to oxidation when hydrogen peroxide was supplied externally. 相似文献
15.
Kim Ji-Hun Sim Dae-Won Park Dongsun Jung Tai-Geun Lee Seonghwan Oh Taeheun Ha Jong-Ryul Seok Seung-Hyeon Seo Min-Duk Kang Ho Chul Kim Young Pil Won Hyung-Sik 《Applied microbiology and biotechnology》2016,100(24):10521-10529
Applied Microbiology and Biotechnology - Fragment engineering of monoclonal antibodies (mAbs) has emerged as an excellent paradigm to develop highly efficient therapeutic and/or diagnostic agents.... 相似文献
16.
The effect of plasmid content on growth of Lactococcus lactis ssp. diacetylactis harboring different plasmids and on plasmid stability was studied. Strain DRC-2C is a plasmid Lac+- and Prt+-free strain. Strain DRC-2 utilizes lactose as carbohydrate and has proteinase activity. The plasmid-free strain DRC-2C exhibited
none of these features. Plasmid-encoded properties were clearly identified. Results showed that plasmid content decreased
bacterial growth in terms of the specific growth rate determined. Slightly lower specific growth rate and lactic acid production
were observed in the strain of higher plasmid content owing to the plasmid presence, causing metabolic burden to the host
cell. The plasmid profile results showed that the number of bands in the two strains before and after fermentation were the
same. This indicated that the plasmids were stably maintained and unchanged during the fermentation.
Received: 27 July 2002 / Accepted: 27 August 2002 相似文献
17.
Enhanced degradation of an endocrine-disrupting chemical,butyl benzyl phthalate,by Fusarium oxysporum f. sp. pisi cutinase 总被引:1,自引:0,他引:1
Compared to yeast esterase, fungal cutinase degraded butyl benzyl phthalate (BBP) far more efficiently; i.e., almost 60% of the BBP disappeared within 7.5 h. Also, the final chemical composition significantly depended on the enzyme used. Toxicity monitoring using bioluminescent bacteria showed that butyl methyl phthalate, a major product of degradation by esterase, was an oxidative toxic hazard. 相似文献
18.
The effect of plasmid content on growth of Lactococcus lactis ssp. diacetylactis harboring different plasmids and on plasmid stability was studied. Strain DRC-2C is a plasmid Lac(+)- and Prt(+)-free strain. Strain DRC-2 utilizes lactose as carbohydrate and has proteinase activity. The plasmid-free strain DRC-2C exhibited none of these features. Plasmid-encoded properties were clearly identified. Results showed that plasmid content decreased bacterial growth in terms of the specific growth rate determined. Slightly lower specific growth rate and lactic acid production were observed in the strain of higher plasmid content owing to the plasmid presence, causing metabolic burden to the host cell. The plasmid profile results showed that the number of bands in the two strains before and after fermentation were the same. This indicated that the plasmids were stably maintained and unchanged during the fermentation. 相似文献
19.