Abstract：
:Eight Enterococcus faecium strains isolated from ewe milk and artisanal cheese from northwest Argentina were screened for biotechnological properties relevant to flavour development. The API ZYM test showed absence of proteases, presence of high amounts of peptidases, and high esterase-lipase activities. Low extracellular proteolytic activity was observed. Most strains produced diacetyl in milk, with E. faecium OvL 214 and OvL 254 being the best producers. Biomass and growth rate increased when citrate was added to the medium, suggesting that these strains could use citrate as a main energy source. After 24 h of incubation, citrate was completely consumed in complex medium supplemented with glucose and citrate. An average of 17% residual citrate was detected in complex media supplemented with citrate. For all strains, esterase activity was detected up to alpha-naphthyl-caproate. They hydrolyzed alpha-naphthyl derivatives of fatty acids in this order: C3 > C6 > C4 > C8 > C2. Post-electrophoretic detection of esterase activities revealed the presence of multiple esterases. Hydrolysis of tributyrin, tricaprylin, and milk fat was observed in cell-free extracts. Enterococcus faecium strains isolated from ewe milk and artisanal cheese from northwest Argentina present the metabolic potential to contribute to cheese flavour development.
journal_name
Can J Microbioljournal_title
Canadian journal of microbiologyauthors
Abeijón MC,Medina RB,Katz MB,González SNdoi
10.1139/w05-136subject
Has Abstractpub_date
2006-03-01 00:00:00pages
237-45issue
3eissn
0008-4166issn
1480-3275pii
w05-136journal_volume
52pub_type
杂志文章abstract：:A purified lipopolysaccharide (LPS) isolated from the rickettsial agent of Q fever, Coxiella burnetii phase 1, possesses some of the in vivo and in vitro biological properties previously only associated with bacterial endotoxins. The Coxiella LPS is mitogenic for guinea pig leukocytes, induces non-specific resistance ...
journal_title：Canadian journal of microbiology
pub_type： 杂志文章
doi：10.1139/m78-259
更新日期：1978-12-01 00:00:00
abstract：:Viruses were isolated from every sample of raw (100 L) and treated (1000 L) water collected at a water treatment plant drawing sewage-contaminated river water. Few plaque-forming isolates were formed but cytopathogenic viruses were isolated as frequently in drinking water as in raw water. In drinking water some sample...
journal_title：Canadian journal of microbiology
pub_type： 杂志文章
doi：10.1139/m81-063
更新日期：1981-04-01 00:00:00
abstract：:Listeria grayi is a nonpathogenic Gram-positive bacterium that demonstrates considerable similarities to other members in the genus Listeria, including the foodborne human pathogen Listeria monocytogenes and the animal pathogen Listeria ivanovii. A rapid diagnostic test to identify and diagnose listeriosis would be va...
journal_title：Canadian journal of microbiology
pub_type： 杂志文章
doi：10.1139/w04-108
更新日期：2005-01-01 00:00:00
abstract：:Large numbers of minute, flat, long, straight, but often broken structures were observed in aqueous extracts of soil. We have applied the purely descriptive term 'tubules' to these structure, because they apparently became flattened during preparation for electron-microscopic viewing. The tubules appeared to be compos...
journal_title：Canadian journal of microbiology
pub_type： 杂志文章
doi：10.1139/m79-105
更新日期：1979-06-01 00:00:00
abstract：:A large pool of antibiotic resistant and auxotrophic mutants was isolated from the Staphylococcus aureus phage group 2 strains UT0002-19 and UT0017 by (1) antibiotic gradient plates, (2) trimethoprim selection, and (3) nitrosoguanidine mutagenesis, which sometimes was coupled by enrichment with either penicillin or me...
journal_title：Canadian journal of microbiology
pub_type： 杂志文章
doi：10.1139/m80-161
更新日期：1980-08-01 00:00:00
abstract：:The microbial community plays an important role in soil nutrient cycles and energy transformations in alpine grassland. In this study, we investigated the composition of the soil microbial community collected from alpine cold swamp meadow (ASM), alpine cold meadow (AM), and alpine cold desert steppe (ADS) within the B...
journal_title：Canadian journal of microbiology
pub_type： 杂志文章
doi：10.1139/cjm-2017-0585
更新日期：2018-03-01 00:00:00
abstract：:Fungal chitinases play essential roles in chitin degradation, cell wall remodeling, chitin recycling, nutrition acquisition, autolysis, and virulence. In this study, 18 genes of the glycoside hydrolase 18 (GH18) family were identified in the Isaria cicadae genome. Seventeen of the genes belonged to chitinases and one ...
journal_title：Canadian journal of microbiology
pub_type： 杂志文章
doi：10.1139/cjm-2019-0129
更新日期：2020-04-01 00:00:00
abstract：:We report a cinematographic analysis of culmination in fruiting bodies of Polysphondylium pallidum. During the final stages of aggregation, sorogen elongation is slow. An increase in the rate of sorogen elongation occurs when the growing stalk contacts the substratum, lifting the cell mass into the air. The elongation...
journal_title：Canadian journal of microbiology
pub_type： 杂志文章
doi：10.1139/m80-163
更新日期：1980-08-01 00:00:00
abstract：:The influence of plant growth promoting (PGP) activity of bacterial communities recovered from each of six weed species (barnyard grass (Echinochloa crusfalli (L.) Beauv.), corn spurrey (Spergula arvensis L.), goldenrod (Sonchus sp.), Italian ryegrass (Lolium multiflorum L.), lamb's-quarters (Chenopodium album L.), an...
journal_title：Canadian journal of microbiology
pub_type： 杂志文章
doi：10.1139/w01-110
更新日期：2001-11-01 00:00:00
abstract：:Dark spots disease (DSD) is a relatively new coral disease that has become one of the most prevalent afflictions in the Caribbean Sea. To partially characterize bacterial communities associated with DSD, carbon utilization patterns of bacterial strains isolated from the surface mucopolysaccharide layers of healthy and...
journal_title：Canadian journal of microbiology
pub_type： 杂志文章
doi：10.1139/W07-002
更新日期：2007-04-01 00:00:00
abstract：:Yersinia enterocolitica biotype 1A (B1A) strains are considered mainly nonpathogenic. However, some studies considered strains of this biotype to be the causal agents of infections in humans and animals. In South America, there are no studies that have compared clinical and nonclinical strains of B1A typed by pulsed-f...
journal_title：Canadian journal of microbiology
pub_type： 杂志文章
doi：10.1139/cjm-2014-0211
更新日期：2014-06-01 00:00:00
abstract：:The respiration of Candida lipolytica on n-tetradecane is decreased in the presence of bentonite. This inhibition is less pronounced by the introduction of hydrophobic chains on the bentonite. Oxygen demand of resting cells varies with the length of hydrophobic chains. In fermentor, addition of adsorbant does not stim...
journal_title：Canadian journal of microbiology
pub_type： 杂志文章
doi：
更新日期：1976-08-01 00:00:00
abstract：:Canadian oil sands tailings are predominately sodic residues contaminated by hydrocarbons such as naphthenic acids. These conditions are harsh for plant development. In this study, we evaluated the effect of inoculating roots of Alnus viridis ssp. crispa and Alnus incana ssp. rugosa with ectomycorrhizal fungi in the p...
journal_title：Canadian journal of microbiology
pub_type： 杂志文章
doi：10.1139/cjm-2015-0703
更新日期：2016-07-01 00:00:00
abstract：:Plant-microbial interactions have been well studied because of the ecological importance of such relationships in aquatic systems. However, general knowledge regarding the composition of these biofilm communities is still evolving, partly as a result of several confounding factors that are attributable to plant host p...
journal_title：Canadian journal of microbiology
pub_type： 杂志文章
doi：10.1139/w2012-053
更新日期：2012-06-01 00:00:00
abstract：:A dairy product processing plant was studied for 2.5 years to examine contamination with Staphylococcus aureus and try to correlate the source of contamination. Cultures were submitted to an antibiotic susceptibility test (AST) and characterised by Pulsed-field Gel Electrophoresis (PFGE) analysis. Results showed that ...
journal_title：Canadian journal of microbiology
pub_type： 杂志文章
doi：10.1139/w00-111
更新日期：2000-12-01 00:00:00
abstract：:The possibility of using the volatile-producing fungus Muscodor albus for biofumigation against building molds was investigated. Several species of Aspergillus and Penicillium as well as fungi belonging to nine other genera were inhibited or killed in vitro by volatiles produced by potato dextrose agar or rye grain cu...
journal_title：Canadian journal of microbiology
pub_type： 杂志文章
doi：10.1139/W06-124
更新日期：2007-03-01 00:00:00
abstract：:This research validates a novel approach for source tracking based on denaturing gradient gel electrophoresis (DGGE) analysis of DNA extracted from Escherichia coli isolates. Escherichia coli from different animal sources and from river samples upstream from, at, and downstream of a combined sewer overflow were subjec...
journal_title：Canadian journal of microbiology
pub_type： 杂志文章
doi：10.1139/W07-083
更新日期：2007-10-01 00:00:00
abstract：:A real-time polymerase chain reaction assay that uses degenerate primers and a dual-labelled probe was developed to detect the bexA gene of Haemophilus influenzae, including those belonging to non-b serotypes as well as clonal division II strains. This assay is sensitive and specific, detecting 20 copies of the gene, ...
journal_title：Canadian journal of microbiology
pub_type： 杂志文章
doi：10.1139/cjm-2013-0040
更新日期：2013-05-01 00:00:00
abstract：:Urinary tract infections are common. Few published studies have demonstrated the change in Escherichia coli urinary isolate antimicrobial susceptibility over time within a given area and (or) population. The purpose of this study was to evaluate the change in susceptibility of E. coli clinical isolates obtained from u...
journal_title：Canadian journal of microbiology
pub_type： 杂志文章
doi：10.1139/w2012-001
更新日期：2012-03-01 00:00:00
abstract：:Three isolates, a Pseudomonas sp., Bacillus sp., and Arthrobacter sp., which had been isolated from a meadow soil at Devon Island, Canada, were subjected to freezing and thawing at low rates under various conditions. When cells were frozen in sand or soil, survival was dependent on moisture level, storage time, and th...
journal_title：Canadian journal of microbiology
pub_type： 杂志文章
doi：10.1139/m78-236
更新日期：1978-12-01 00:00:00
abstract：:The anaerobic degradative pathway for metabolism of 2,4,6-trinitrotoluene (TNT) by a consortium of Desulfovibrio spp. isolated from a creek sediment was studied. This consortium has the metabolic capability to degrade TNT to fatty acids. The growth of the consortium and the metabolism of TNT were greatly enhanced in t...
journal_title：Canadian journal of microbiology
pub_type： 杂志文章
doi：10.1139/m96-155
更新日期：1996-12-01 00:00:00
abstract：:Administered orally, Quillaja saponin markedly potentiated the humoral immune responses of mice fed inactivated rabies vaccine, and significantly increased their resistance to subsequent intracerebral challenge with live rabies virus. Although mean serum neutralizing antibody titres were generally 8- to 16-fold higher...
journal_title：Canadian journal of microbiology
pub_type： 杂志文章
doi：10.1139/m86-078
更新日期：1986-05-01 00:00:00
abstract：:Bacterial communities that can degrade surfactants have been selected from coastal seawaters contaminated by urban sewages. Only the linear fraction of commercial anionic surfactants was quickly degraded, and a residual fraction representing 10% of the initial concentration always remained. The highest concentrations ...
journal_title：Canadian journal of microbiology
pub_type： 杂志文章
doi：
更新日期：1987-10-01 00:00:00
abstract：:Polynucleotide sequences among 24 motile and 11 non-motile aeromonads were studied by analysis of deoxyribonucleic acid - deoxyribonucleic acid (DNA-DNA) duplexes with endonuclease S1. In addition, DNA base composition (mole % guanine and cytosine (G + C)) and relative genome sizes were determined for selected strains...
journal_title：Canadian journal of microbiology
pub_type： 杂志文章
doi：10.1139/m79-083
更新日期：1979-05-01 00:00:00
abstract：:The attachment of Bradyrhizobium sp. (Lupinus) strain MSDJ718 to excised roots of white lupin was examined. Maximal attachment occurred at early to middle log phases of bacterial growth. This binding was pH dependent, with an optimal value reached at 6.6. Irrespective of the culture age, the attachment was strongly af...
journal_title：Canadian journal of microbiology
pub_type： 杂志文章
doi：10.1139/m96-035
更新日期：1996-03-01 00:00:00
abstract：:From electron-microscopical observations, a decreased metabolic activity in 3-day-old Candida albicans chlamydospores was suggested, and progressive deterioration in chlamydospores aged 2-8 months was shown. Oxygen utilization by chlamydospore-pseudomycelium (CSP) preparations was less than that by yeast, while 3-day-...
journal_title：Canadian journal of microbiology
pub_type： 杂志文章
doi：10.1139/m79-111
更新日期：1979-06-01 00:00:00
abstract：:The shikimate metabolites are key precursors to a large number of natural products, including aromatic amino acids. Chorismic acid is an important branch point in the biosynthetic pathway to aromatic amino acids. Chorismic acid is also unique among natural products since it is the only compound known to undergo an enz...
journal_title：Canadian journal of microbiology
pub_type： 杂志文章
doi：10.1139/m91-043
更新日期：1991-04-01 00:00:00
abstract：:Sixty-four species of filamentous fungi from five flare pits in northern and western Canada were tested for their ability to degrade crude oil using gas chromatographic analysis of residual hydrocarbons following incubation. Nine isolates were tested further using radiorespirometry to determine the extent of mineraliz...
journal_title：Canadian journal of microbiology
pub_type： 杂志文章
doi：
更新日期：2000-01-01 00:00:00
abstract：:The prevalence of Coxiella burnetti infection (Q fever) was determined among Nova Scotia (N.S.) and Prince Edward Island (P.E.I.) blood donors by using the complement fixation and microimmunofluorescence (IF) test. The complement fixation and IF antibody tests measured antibody prevalence for the phase II or phase I a...
journal_title：Canadian journal of microbiology
pub_type： 杂志文章
doi：10.1139/m84-021
更新日期：1984-01-01 00:00:00
abstract：:Through genomic analysis of mucosa-associated Escherichia coli strains, we found a close genetic association among isolates from pediatric inflammatory bowel disease (IBD) patients. A specific E. coli pathovar, adherent-invasive E. coli (AIEC), was found in Crohn's disease (CD) adult patients - this pathovar has enhan...
journal_title：Canadian journal of microbiology
pub_type： 杂志文章
doi：10.1139/w2012-007
更新日期：2012-04-01 00:00:00
