High efficacy bioconversion of starch to lactic acid using an amylolytic lactic acid bacterium isolated from Thai indigenous fermented rice noodles

2014 ◽  
Vol 23 (5) ◽  
pp. 1541-1550 ◽  
Author(s):  
Apinun Kanpiengjai ◽  
Wannisa Rieantrakoonchai ◽  
Ronachai Pratanaphon ◽  
Wasu Pathom-aree ◽  
Saisamorn Lumyong ◽  
...  
Keyword(s):  
Lactic Acid ◽  
Lactic Acid Bacterium ◽  
High Efficacy

scholarly journals Structural and Functional Conversion of Molecular Chaperone ClpB from the Gram-Positive Halophilic Lactic Acid Bacterium Tetragenococcus halophilus Mediated by ATP and Stress

2006 ◽  
Vol 188 (23) ◽  
pp. 8070-8078 ◽  
Author(s):  
Shinya Sugimoto ◽  
Hiroyuki Yoshida ◽  
Yoshimitsu Mizunoe ◽  
Keigo Tsuruno ◽  
Jiro Nakayama ◽  
...  
Keyword(s):  
Lactic Acid ◽  
Lactic Acid Bacterium ◽  
Molecular Chaperone ◽  
Thermal Inactivation ◽  
Gel Filtration ◽  
Ring Structure ◽  
Stress Conditions ◽  
Gel Filtration Chromatography ◽  
Gram Positive ◽  
Tetragenococcus Halophilus

ABSTRACT In this study, we report the purification, initial structural characterization, and functional analysis of the molecular chaperone ClpB from the gram-positive, halophilic lactic acid bacterium Tetragenococcus halophilus. A recombinant T. halophilus ClpB (ClpB Tha ) was overexpressed in Escherichia coli and purified by affinity chromatography, hydroxyapatite chromatography, and gel filtration chromatography. As demonstrated by gel filtration chromatography, chemical cross-linking with glutaraldehyde, and electron microscopy, ClpB Tha forms a homohexameric single-ring structure in the presence of ATP under nonstress conditions. However, under stress conditions, such as high-temperature (>45°C) and high-salt concentrations (>1 M KCl), it dissociated into dimers and monomers, regardless of the presence of ATP. The hexameric ClpB Tha reactivated heat-aggregated proteins dependent upon the DnaK system from T. halophilus (KJE Tha ) and ATP. Interestingly, the mixture of dimer and monomer ClpB Tha , which was formed under stress conditions, protected substrate proteins from thermal inactivation and aggregation in a manner similar to those of general molecular chaperones. From these results, we hypothesize that ClpB Tha forms dimers and monomers to function as a holding chaperone under stress conditions, whereas it forms a hexamer ring to function as a disaggregating chaperone in cooperation with KJE Tha and ATP under poststress conditions.

scholarly journals Draft Genome Sequence of Enterococcus faecalis DD14, a Bacteriocinogenic Lactic Acid Bacterium with Anti-Clostridium Activity

2017 ◽  
Vol 5 (30) ◽  
Author(s):  
Yanath Belguesmia ◽  
Valérie Leclère ◽  
Matthieu Duban ◽  
Eric Auclair ◽  
Djamel Drider
Keyword(s):  
Lactic Acid ◽  
Lactic Acid Bacterium ◽  
Enterococcus Faecalis ◽  
Genome Sequence ◽  
Draft Genome ◽  
Draft Genome Sequence ◽  
Coding Sequences ◽  
Content Type ◽  
Gram Positive Bacteria ◽  
Healthy Newborn

ABSTRACT We report the draft genome sequence of Enterococcus faecalis DD14, a strain isolated from meconium of a healthy newborn at Roubaix Hospital (France). The strain displayed antagonism against a set of Gram-positive bacteria through concomitant production of lactic acid and bacteriocin. The genome has a size of 2,893,365 bp and a 37.3% G+C ratio and is predicted to contain at least 2,755 coding sequences and 62 RNAs.

Production and purification of a novel exopolysaccharide from lactic acid bacterium Streptococcus phocae PI80 and its functional characteristics activity in vitro

2011 ◽  
Vol 102 (7) ◽  
pp. 4827-4833 ◽  
Author(s):  
Paulraj Kanmani ◽  
R. Satish kumar ◽  
N. Yuvaraj ◽  
K.A. Paari ◽  
V. Pattukumar ◽  
...  
Keyword(s):  
Lactic Acid ◽  
Lactic Acid Bacterium ◽  
Functional Characteristics

scholarly journals Phylogenetic analysis of the genus Pediococcus, including Pediococcus claussenii sp. nov., a novel lactic acid bacterium isolated from beer.

2002 ◽  
Vol 52 (6) ◽  
pp. 2003-2010 ◽  
Author(s):  
C Melissa Dobson ◽  
Harry Deneer ◽  
Sun Lee ◽  
Sean Hemmingsen ◽  
Sarah Glaze ◽  
...  
Keyword(s):  
Phylogenetic Analysis ◽  
Lactic Acid ◽  
Lactic Acid Bacterium

scholarly journals Characterization of γ-Aminobutyric acid(GABA) produced by a lactic acid bacterium from button mushroom bed

2013 ◽  
Vol 11 (4) ◽  
pp. 181-186 ◽  
Author(s):  
Yun-Seok Lee ◽  
Tae-Young Song ◽  
Won-Sik Kong ◽  
Min-Ho Yoon
Keyword(s):  
Lactic Acid ◽  
Lactic Acid Bacterium ◽  
Aminobutyric Acid ◽  
Button Mushroom

scholarly journals Analysis of Transcriptomic Response to SO 2 by Oenococcus oeni Growing in Continuous Culture

2021 ◽  
Author(s):  
Cristobal A. Onetto ◽  
Peter J. Costello ◽  
Radka Kolouchova ◽  
Charlotte Jordans ◽  
Jane McCarthy ◽  
...  
Keyword(s):  
Lactic Acid ◽  
Lactic Acid Bacterium ◽  
High Sensitivity ◽  
Malolactic Fermentation ◽  
Oenococcus Oeni ◽  
Low Ph ◽  
Transcriptomic Response ◽  
Content Type ◽  
Bacterium Species ◽  
High Ethanol

Malolactic fermentation is an indispensable step in the elaboration of most wines and is generally performed by Oenococcus oeni , a Gram-positive heterofermentative lactic acid bacterium species. While O. oeni is tolerant to many of the wine stresses, including low pH and high ethanol concentrations, it has high sensitivity to SO 2 , an antiseptic and antioxidant compound regularly used in winemaking.

Characterization of a new virulent phage infecting the lactic acid bacterium Oenococcus oeni

2016 ◽  
Vol 54 ◽  
pp. 167-177 ◽  
Author(s):  
Fety Jaomanjaka ◽  
Olivier Claisse ◽  
Mélanie Blanche-Barbat ◽  
Melina Petrel ◽  
Patricia Ballestra ◽  
...  
Keyword(s):  
Lactic Acid ◽  
Lactic Acid Bacterium ◽  
Oenococcus Oeni ◽  
Virulent Phage

Development of a new beverage fermented with a lactic acid bacterium using a sweet potato shochu distillery by-product and milk.

2009 ◽  
Vol 104 (12) ◽  
pp. 969-977 ◽  
Author(s):  
Toshikazu YONEMOTO ◽  
Tomoki NAKANO ◽  
Toshikazu TAKESAKO ◽  
Tarushige NAKAJI ◽  
Kazunori TAKAMINE ◽  
...  
Keyword(s):  
Lactic Acid ◽  
Lactic Acid Bacterium ◽  
Sweet Potato

scholarly journals Global Survey and Genome Exploration of Bacteriophages Infecting the Lactic Acid Bacterium Streptococcus thermophilus

2017 ◽  
Vol 8 ◽  
Author(s):  
Brian McDonnell ◽  
Jennifer Mahony ◽  
Laurens Hanemaaijer ◽  
Horst Neve ◽  
Jean-Paul Noben ◽  
...  
Keyword(s):  
Lactic Acid ◽  
Lactic Acid Bacterium ◽  
Streptococcus Thermophilus ◽  
Global Survey
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