Abstract：
:The present investigation deals with the optimization of cell growth rate of the candidate probiotic Pediococcus acidilactici in the presence of the specific prebiotic inulin. Three independent variables viz. concentration of inulin, concentration of glucose and pH have been selected for optimization study using response surface methodology. Theoretical analysis indicates that the maximum cell growth rate occurs at pH 7, 20 g/dm(3) concentration of inulin and 20 g/dm(3) concentration of glucose. Validation of these values has been done through a set of programmed experiments. Studies on cell dynamics in the presence of different concentrations of inulin have also been carried out to identify any limitation on the initial inulin concentration. Results clearly indicate that cell growth is enhanced with the increase in inulin concentration. However, there is a critical value of the prebiotic concentration (20 g/dm(3) inulin) beyond which the cell growth is inhibited. A summative type growth model has been proposed to explain the growth behaviour of P. acidilactici in the presence of the dual substrate, i.e. glucose and inulin. While growth on glucose follows Monod model, Haldane-type substrate-inhibited growth model holds good for growth on inulin. Intrinsic kinetic parameters for all the model equations have been determined experimentally.
journal_name
Arch Microbioljournal_title
Archives of microbiologyauthors
Samanta Koruri S,Chowdhury R,Bhattacharya Pdoi
10.1007/s00203-015-1131-2subject
Has Abstractpub_date
2015-09-01 00:00:00pages
955-63issue
7eissn
0302-8933issn
1432-072Xjournal_volume
197pub_type
杂志文章abstract：:L-(+)-lactate dehydrogenase (LDH) from Staphylococcus epidermidis ATCC 14990 was purified by affinity chromatography. The purified enzyme was specifically activated by fructose-1,6-diphosphate (FDP). The concentration of FDP required for 50% maximal activity was about 0.15 mM. The enzyme activity was inhibited by aden...
journal_title：Archives of microbiology
pub_type： 杂志文章
doi：10.1007/BF00447150
更新日期：1975-11-07 00:00:00
abstract：:The main property of an Amt- (ammonium transport negative) mutant of Klebsiella pneumoniae is its inability to accumulate NH4+ intracellularly. When growing on nitrogen sources other than NH4+, the mutant constantly looses NH3 by diffusion. This loss results in poor growth. The NH3 excretion suggests the existence of ...
journal_title：Archives of microbiology
pub_type： 杂志文章
doi：10.1007/BF00402008
更新日期：1984-10-01 00:00:00
abstract：:Pulicat Lake sediments are often severely polluted with the toxic heavy metal mercury. Several mercury-resistant strains of Bacillus species were isolated from the sediments and all the isolates exhibited broad spectrum resistance (resistance to both organic and inorganic mercuric compounds). Plasmid curing assay show...
journal_title：Archives of microbiology
pub_type： 杂志文章
doi：10.1007/s00203-006-0088-6
更新日期：2006-04-01 00:00:00
abstract：:Dunaliella tertiolecta (marine) and D. viridis (halophilic) were each trained by serial transfer to grow at salt concentrations previously regarded as the other's domain. D. viridis then had a salt optimum at 1.0-1.5 M sodium chloride whereas that for D. tertiolecta was less than 0-2 M. Nevertheless D. tertiolecta gre...
journal_title：Archives of microbiology
pub_type： 杂志文章
doi：10.1007/BF00428592
更新日期：1977-05-13 00:00:00
abstract：:Methanolic extract of Artemisia pallens (MEAP) (Asteraceae) was explored as greenbiocorrosion inhibitor for mild steel 1010 in 1.5% sodium chloride environment. Bacillus megaterium SKR7 induces the development of biofilm on the metal surface and forms the pitting corrosion. MEAP was showed (25 ppm) optimum inhibition ...
journal_title：Archives of microbiology
pub_type： 杂志文章
doi：10.1007/s00203-020-01951-7
更新日期：2020-10-01 00:00:00
abstract：:Over 2,800 Tn 5 insertion mutants of Salmonella enterica sv. Typhimurium were screened for the loss of ability to suppress the multiplication of a spectinomycin-resistant (Spc(r)) but otherwise isogenic S. enterica sv. Typhimurium strain, when the Spc(r) mutant was added to 24-h LB broth cultures of the mutants. Selec...
journal_title：Archives of microbiology
pub_type： 杂志文章
doi：10.1007/s00203-002-0458-7
更新日期：2002-12-01 00:00:00
abstract：:After the addition to soil of large numbers of a cowpea Rhizobium strain, the population declined steadily until the numbers reached about 10(7)/g, and the protozoa rose to about 10(4)/g. When indigenous protozoa were suppressed by the addition of actidione to the soil, the density of the test rhizobium did not fall i...
journal_title：Archives of microbiology
pub_type： 杂志文章
doi：10.1007/BF00492022
更新日期：1977-06-20 00:00:00
abstract：:The metabolism of methylamine as the nitrogen source for growth of the non-methylotrophic yeast Candida utilis and the methylotrophic yeast Hansenula polymorpha was investigated. Growth of both organisms in media with glucose and methylamine was associated with the presence of an amine oxidase in these cells. The enzy...
journal_title：Archives of microbiology
pub_type： 杂志文章
doi：10.1007/BF00511216
更新日期：1980-06-01 00:00:00
abstract：:During a screening program intended to identify genes encoding enzymes typical for secondary metabolism in Sorangium cellulosum So ce90, an aromatic amino acid decarboxylase gene (ddc) was detected. Expression of ddc in Escherichia coli and subsequent enzyme assays with cell-free extracts confirmed the proposed functi...
journal_title：Archives of microbiology
pub_type： 杂志文章
doi：10.1007/s002039900131
更新日期：2000-04-01 00:00:00
abstract：:A monoclonal antibody obtained by immunization of mice with heat-killed cells of Listeria monocytogenes serotype 4d showed reactivity towards a protein (P45) from L. monocytogenes with an apparent molecular mass of 45 kDa. This protein was detected in the culture supernatant and at the cell surface of L. monocytogenes...
journal_title：Archives of microbiology
pub_type： 杂志文章
doi：10.1007/s002030050003
更新日期：2000-01-01 00:00:00
abstract：:Glyoxalase I is a ubiquitous enzyme that detoxifies methylglyoxal, which is derived from glycolysis but inhibits the growth of cells from microorganisms to mammals. Here, the structural gene for glyoxalase I ( glo1(+)) from the fission yeast Schizosaccharomyces pombe was identified. Disruption of glo1(+) enhanced susc...
journal_title：Archives of microbiology
pub_type： 杂志文章
doi：10.1007/s00203-004-0666-4
更新日期：2004-05-01 00:00:00
abstract：:Pyruvate kinase (ATP: pyruvate phosphotransferase (EC 2.7.1.40) was partially purified from both autotrophically and heterotrophically grown Paracoccus denitrificans. The organism grown under heterotrophic conditions contains four times more pyruvate kinase than under autotrophic conditions. The enzyme isolated from b...
journal_title：Archives of microbiology
pub_type： 杂志文章
doi：10.1007/BF00427847
更新日期：1977-10-24 00:00:00
abstract：:Non-hemolytic enterotoxin (NHE), a tri-partite, proteinaceous toxin encoded by contiguous nheA, nheB and nheC genes of Bacillus cereus sensu lato (B. cereus s.l.), is considered to be associated with the foodborne diarrheic syndrome. However, B. cereus s.l. includes a number of closely related strains, and the occurre...
journal_title：Archives of microbiology
pub_type： 杂志文章
doi：10.1007/s00203-017-1350-9
更新日期：2017-07-01 00:00:00
abstract：:Colistin is a mixture of polymyxin E1 and E2, bactericidal pentacationic lipopeptides used to treat infections caused by Gram-negative pathogens such as Pseudomonas aeruginosa and Klebsiella pneumoniae. Industrial production of colistin is obtained by a fermentation process of the natural producer Paenibacillus polymy...
journal_title：Archives of microbiology
pub_type： 杂志文章
doi：10.1007/s00203-015-1084-5
更新日期：2015-05-01 00:00:00
abstract：:NAD-linked lactate dehydrogenases specific for the D- and L-lactate have been demonstrated in a number of strains of unicellular cyanobacteria. The D-lactate dehydrogenase of one strain (Synechococcus 6716) was partially purified and its properties were studied. The enzyme has a molecular weight of ca. 115000-120000...
journal_title：Archives of microbiology
pub_type： 杂志文章
doi：10.1007/BF00447300
更新日期：1975-06-20 00:00:00
abstract：:Although, there have been many published bacterial strains aerobically degrading the heterocyclic amine compounds, only one strain to date has been reported to degrade pyrrolidine under denitrifying conditions. In this study, denitrifying bacteria degrading pyrrolidine and piperidine were isolated from diverse geologi...
journal_title：Archives of microbiology
pub_type： 杂志文章
doi：10.1007/s00203-008-0452-9
更新日期：2009-04-01 00:00:00
abstract：:Twelve genes involved in thiamin biosynthesis in prokaryotes have been identified and overexpressed. Of these, six are required for the thiazole biosynthesis (thiFSGH, thil, and dxs), one is involved in the pyrimidine biosynthesis (thiC), one is required for the linking of the thiazole and the pyrimidine (thiE), and f...
journal_title：Archives of microbiology
pub_type： 杂志文章,评审
doi：10.1007/s002030050713
更新日期：1999-04-01 00:00:00
abstract：:In this study, chromium (Cr)-tolerant bacteria were test for their efficiency in alleviating Cr stress in Cicer arietinum plants. On the basis of 16S rRNA gene analysis, the isolates were identified belonging to genus Stenotrophomonas maltophilia, Bacillus thuringiensis B. cereus, and B. subtilis. The strains produced...
journal_title：Archives of microbiology
pub_type： 杂志文章
doi：10.1007/s00203-019-01801-1
更新日期：2020-05-01 00:00:00
abstract：:During the course of isolating rare actinobacteria from unexplored habitats, strain CH32T was obtained from an arid soil sample in eastern Anatolia, Turkey. Polyphasic characterization and comprehensive genome analyses showed that the strain is a member of the genus Nonomuraea and it is closely related to Nonomuraea g...
journal_title：Archives of microbiology
pub_type： 杂志文章
doi：10.1007/s00203-020-01941-9
更新日期：2020-10-01 00:00:00
abstract：:The present study investigated the endophytic bacterial communities in the seeds of mature, natural common reed (Phragmites australis) and narrowleaf cattail (Typha angustifolia L.). Additionally, seed endophytic bacterial communities were compared with rhizospheric and root endophytic bacterial communities using Illu...
journal_title：Archives of microbiology
pub_type： 杂志文章
doi：10.1007/s00203-018-1493-3
更新日期：2018-08-01 00:00:00
abstract：:Klebsiella pneumoniae NCTC 418 was cultured aerobically in chemostat cultures (D = 0.3 h-1; 35 degrees C) under respectively carbon-, phosphate-, potassium-, sulphate-, and ammonia-limited conditions with glucose as the sole carbon and energy source. The effect of the external pH value on glucose metabolism and on the...
journal_title：Archives of microbiology
pub_type： 杂志文章
doi：10.1007/BF00413140
更新日期：1989-01-01 00:00:00
abstract：:Stress resistance and fermentative capability are important quality characteristics of baker's yeast. In the present study, we examined protective effects of exogenous alpha-ketoglutarate (AKG), an intermediate of the tricarboxylic acid cycle and amino acid metabolism, against freeze-thaw and carbohydrate-induced stre...
journal_title：Archives of microbiology
pub_type： 杂志文章
doi：10.1007/s00203-017-1423-9
更新日期：2018-01-01 00:00:00
abstract：:In autotrophic methanogens, pyruvate oxidoreductase (POR) plays a key role in the assimilation of CO(2) and the biosynthesis of organic carbon. This enzyme has been purified to homogeneity, and the genes from Methanococcus maripaludis were sequenced. The purified POR contained five polypeptides with molecular masses o...
journal_title：Archives of microbiology
pub_type： 杂志文章
doi：10.1007/s00203-003-0554-3
更新日期：2003-06-01 00:00:00
abstract：:In phototrophic and chemoautotrophic proteobacteria, genes encoding enzymes of the Calvin-Benson-Bassham pathway of CO2 fixation are often found in clusters that are transcribed from a single promoter under control of the LysR-type transcriptional activator, CbbR. Mutations affecting CbbR prevent induction of cbb gene...
journal_title：Archives of microbiology
pub_type： 杂志文章,评审
doi：10.1007/s002030050369
更新日期：1996-09-01 00:00:00
abstract：:Acinetobacter strain IVS-B aerobically grows on isovalerate as sole carbon and energy source. Isovalerate is metabolised via isovaleryl-CoA, an intermediate of the oxidative (S)-leucine degradation pathway. A 3-methylglutaconyl-CoA hydratase (EC 4.2.1.18) was purified 65-fold to apparent homogeneity from cell-free ext...
journal_title：Archives of microbiology
pub_type： 杂志文章
doi：10.1007/s00203-006-0095-7
更新日期：2006-05-01 00:00:00
abstract：:A strain of Pseudomonas fluorescens was capable of co-metabolizing 3-chlorobenzoic acid with the production of a chlorinated catechol black pigment. A peroxidase and another enzymatic activity referred to as a polyphenol oxidase were found to be involved in the oxidation of 4-chlorocatechol to 4-chloro-1,2-benzoquinon...
journal_title：Archives of microbiology
pub_type： 杂志文章
doi：10.1007/BF00252220
更新日期：1993-01-01 00:00:00
abstract：:Citrobacter rodentium (Cr) is a mouse pathogen that mimics many aspects of enteropathogenic Escherichia coli infections including producing attaching and effacing (A/E) lesions. Host-adapted (HA) Cr cells that are shed at the peak of infection have been reported to be hyper-infective. The exact mechanism underlying th...
journal_title：Archives of microbiology
pub_type： 杂志文章
doi：10.1007/s00203-016-1191-y
更新日期：2016-05-01 00:00:00
abstract：:In the fermentation of L-aspartate by a free-living Campylobacter spec., the products formed were acetate, succinate, carbon dioxide and ammonia. The oxidative part of the fermentation pathway yielded acetate, succinate, carbon dioxide and ammonia, and the reductive part gave rise to the formation of succinate and amm...
journal_title：Archives of microbiology
pub_type： 杂志文章
doi：10.1007/BF00689359
更新日期：1978-04-27 00:00:00
abstract：:The major cobamide-containing protein from methanol-utilizing Sporomusa ovata was 8-fold enriched to apparent homogeneity. The protein exhibited a molecular mass of 40 kDa and of 38 kDa determined by gel filtration and by SDS-polyacrylamide gel electrophoresis, respectively. This finding indicates a monomeric protein ...
journal_title：Archives of microbiology
pub_type： 杂志文章
doi：10.1007/BF00245367
更新日期：1992-01-01 00:00:00
abstract：:In recent years, bioremediation is considered as an efficient method to remove the pollutants from the industrial wastewater. In this study, quantitative gene expressions (Real-time RT-PCR) of mtr gene cluster (mtrA, mtrB, mtrC, mtrD, mtrE, mtrF and omcA) in five different uranium concentrations (0.1, 0.25, 0.5, 1 and...
journal_title：Archives of microbiology
pub_type： 杂志文章
doi：10.1007/s00203-020-01981-1
更新日期：2020-12-01 00:00:00
