Abstract:
:Survivor curves for heat-resistant ascospores of Byssochlamys fulva exposed to lethal heat were nonlogarithmic. At lower heating temperatures, the log survivor curves were characterized by a shoulder plus an accelerating death rate; with increased temperatures, the rate approached logarithmic death. The formula (log No -- log N)a = kt + C was adapted to linearize these data. No and N are the initial and surviving numbers of organisms at the time t. The death rate is given by k, and C is a constant for a set of data. The a value is derived from the least-squares slope of a plot of log (log No -- log N) against log time and is used to linearize the thermal death rate curves. This formula permitted calculations of parameters analogous to those for logarithmic death (D and z). Use of formula is illustrated for selected nonlinear microbial death rate curves from the literature.
journal_name
Appl Environ Microbioljournal_title
Applied and environmental microbiologyauthors
King AD Jr,Bayne HG,Alderton Gdoi
10.1128/AEM.37.3.596-600.1979subject
Has Abstractpub_date
1979-03-01 00:00:00pages
596-600issue
3eissn
0099-2240issn
1098-5336journal_volume
37pub_type
杂志文章abstract::When sucrose is provided as a substrate for glucosyltransferase (GTF), Spp+ cells of the oral bacteria Streptococcus gordonii grow embedded in an insoluble glucan mass associated with surfaces. Spp- phase variants with lower GTF activity, which either arise from or are grown with Spp+ cells, segregate preferentially a...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.57.12.3648-3651.1991
更新日期:1991-12-01 00:00:00
abstract::Two alpha-amylase genes from the thermophilic alkaliphile Anaerobranca gottschalkii were cloned, and the corresponding enzymes, AmyA and AmyB, were investigated after purification of the recombinant proteins. Based on their amino acid sequences, AmyA is proposed to be a lipoprotein with extracellular localization and ...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.71.7.3709-3715.2005
更新日期:2005-07-01 00:00:00
abstract::The effect of CO2 availability on cell size, shape, and aggregation in continuous cultures of Candida utilis was studied in minimal medium with glucose or ethanol as the sole carbon and energy source. Enrichment with CO2 was achieved (i) by using the substrate with more C atoms, (ii) by using pure oxygen and thus decr...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.40.5.855-861.1980
更新日期:1980-11-01 00:00:00
abstract::A triplex reverse transcriptase PCR (RT-PCR) was developed to simultaneously detect poliovirus, hepatitis A virus (HAV), and rotavirus in sewage and ocean water. Sewage and ocean water samples seeded with the three different viruses were concentrated by ultrafiltration. The unseeded ocean water and sewage samples were...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.60.7.2400-2407.1994
更新日期:1994-07-01 00:00:00
abstract::Ammonia-oxidizing bacteria (AOB) are thought to contribute significantly to N2O production and methane oxidation in soils. Most of our knowledge derives from experiments with Nitrosomonas europaea, which appears to be of minor importance in most soils compared to Nitrosospira spp. We have conducted a comparative study...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.65.6.2679-2684.1999
更新日期:1999-06-01 00:00:00
abstract::Bacillus sp. strain SS, an aerobic, gram-positive sporeformer, was isolated from seeds of Astragalus crotalariae, a selenium-accumulating plant. This bacillus grew in a nutrient broth (containing beef extract and peptone) if the medium was supplemented with high concentrations of selenium. Concentrations of Na(2)SeO(3...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.44.3.737-743.1982
更新日期:1982-09-01 00:00:00
abstract::Desulfitobacterium frappieri PCP-1 was induced for ortho- and para-dechlorinating activities by different chlorophenols. Dehalogenation rates ranging from 25 to 1,158 nmol/min/mg of cell protein were observed according to the chlorophenol tested and the position of the chlorine removed. D. frappieri shows a broad subs...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.64.11.4603-4606.1998
更新日期:1998-11-01 00:00:00
abstract::We sought to determine whether microorganisms from the polychlorinated biphenyl (PCB)-contaminated sediment in Woods Pond (Lenox, Mass.) could dehalogenate brominated biphenyls. The PCB dechlorination specificities for the microorganisms in this sediment have been well characterized. This allowed us to compare the deh...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.64.3.940-947.1998
更新日期:1998-03-01 00:00:00
abstract::Bacterial growth occurs in noncarbonated natural mineral waters a few days after filling and storage at room temperature, a phenomenon known for more than 40 years. Using the full-cycle rRNA approach, we monitored the development of the planktonic bacterial community in a noncarbonated natural mineral water after bott...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.71.7.3624-3632.2005
更新日期:2005-07-01 00:00:00
abstract::Epimerization of sugar nucleotides is central to the structural diversification of monosaccharide building blocks for cellular biosynthesis. Epimerase applicability to carbohydrate synthesis can be limited, however, by the high degree of substrate specificity exhibited by most sugar nucleotide epimerases. Here, we dis...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.02131-20
更新日期:2020-12-04 00:00:00
abstract::Agrobacterium tumefaciens C58 grown on acidic medium containing glucose and solidified with bacteriological agar expressed a virB::lacZ fusion. No expression of this fusion was observed on a similar medium which was solidified with purified agarose. The fraction from bacteriological agar which was responsible for vir ...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.63.11.4578-4580.1997
更新日期:1997-11-01 00:00:00
abstract::Indirect exposure to waterborne viruses increases the risk of infection, especially among children with frequent hand-to-mouth contacts. Here, we quantified the transfer of one bacteriophage (MS2) and two enteric viruses (adenovirus and coxsackievirus) from liquid to skin. MS2, a commonly used enteric virus surrogate,...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.01809-18
更新日期:2018-10-30 00:00:00
abstract:UNLABELLED:Our goal was to develop a robust tagging method that can be used to track bacterial strains in vivo To address this challenge, we adapted two existing systems: a modular plasmid-based reporter system (pCS26) that has been used for high-throughput gene expression studies in Salmonella and Escherichia coli and...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.01346-16
更新日期:2016-07-29 00:00:00
abstract::Thermophilic sulfate-reducing bacteria were enriched from samples obtained from a geothermal underground mine in Japan. The enrichment cultures contained bacteria affiliated with the genera Desulfotomaculum, Thermanaeromonas, Thermincola, Thermovenabulum, Moorella, "Natronoanaerobium," and Clostridium. Two novel therm...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.72.5.3759-3762.2006
更新日期:2006-05-01 00:00:00
abstract::Analysis of food samples for E. coli O157:H7 using the standard U.S. Food and Drug Administration procedure is frequently complicated by overgrowth of nontarget microorganisms. A new procedure was developed for enrichment of enterohemorrhagic E. coli (EHEC) which utilizes exposure to pH 2.00 for 2 h. This procedure yi...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/aem.70.2.1226-1230.2004
更新日期:2004-02-01 00:00:00
abstract::Rhodococcus erythropolis I-19, containing multiple copies of key dsz genes, was used to desulfurize alkylated dibenzothiophenes (Cx-DBTs) found in a hydrodesulfurized middle-distillate petroleum (MD 1850). Initial desulfurization rates of dibenzothiophene (DBT) and MD 1850 by I-19 were 5.0 and 2.5 micromol g dry cell ...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.65.11.4967-4972.1999
更新日期:1999-11-01 00:00:00
abstract::An acclimated shake flask CO(2) evolution test was used to study the biodegradability of 14 commercial phthalate esters that are commonly used as plasticizers. Both CO(2) evolution (ultimate biodegradation) and loss of parent phthalate esters (primary biodegradation) were measured. With only a few exceptions, primary ...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.47.4.601-606.1984
更新日期:1984-04-01 00:00:00
abstract::The esterases and lipases from the α/β hydrolase superfamily exhibit an enormous sequence diversity, fold plasticity, and activities. Here, we present the comprehensive sequence and biochemical analyses of seven distinct esterases and lipases from the metagenome of Lake Arreo, an evaporite karstic lake in Spain (42°46...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.00240-13
更新日期:2013-06-01 00:00:00
abstract::Campylobacter jejuni was isolated from 18 of 40 processed broiler carcasses and 134 of 327 cloacal swabs obtained at four processing plants in Sydney, Australia. Three of four flocks examined carried C. jejuni. Eighty-two percent of chicken and 98% of human isolates from the area were of identical biotypes. ...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.43.5.1219-1220.1982
更新日期:1982-05-01 00:00:00
abstract::A diesel fuel-contaminated aquifer was bioremediated in situ by the injection of oxidants (O2 and NO3-) and nutrients in order to stimulate microbial activity. After 3.5 years of remediation, an aquifer sample was excavated and the material was used (i) to isolate bacterial strains able to grow on selected hydrocarbon...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.63.6.2136-2141.1997
更新日期:1997-06-01 00:00:00
abstract::A total of 52 strains of Lactobacillus acidophilus were examined for production of bacteriocins. A majority (63%) demonstrated inhibitory activity against all members of a four-species grouping of Lactobacillus leichmannii, Lactobacillus bulgaricus, Lactobacillus helveticus, and Lactobacillus lactis. Four L. acidophil...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.45.6.1808-1815.1983
更新日期:1983-06-01 00:00:00
abstract::Most denitrifiers produce nitrous oxide (N(2)O) instead of dinitrogen (N(2)) under aerobic conditions. We isolated and characterized novel aerobic denitrifiers that produce low levels of N(2)O under aerobic conditions. We monitored the denitrification activities of two of the isolates, strains TR2 and K50, in batch an...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/aem.69.6.3152-3157.2003
更新日期:2003-06-01 00:00:00
abstract::The viability of starved or dying Saccharomyces cerevisiae Y5 cells was extended for up to 1,500 h by adding osmotic supports (0.6 M sorbitol or mannitol) to the starvation media. Replacement of these polyols with 0.3 M KCl, 0.5 M MgSO4, or 0.2 M MgCl2 postponed the death of cells incubated in N-free medium, but accel...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.50.3.713-716.1985
更新日期:1985-09-01 00:00:00
abstract::Starting with a strain of Bacillus cereus excreting about 40-fold more beta-amylase than does the original wild-type strain, we isolated, after mutagenesis with N-methyl-N'-nitro-N-nitrosoguanidine, a strain designated BQ10-S1 SpoIII which showed under optimal conditions a further 5.5-fold increase in beta-amylase act...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.53.4.768-771.1987
更新日期:1987-04-01 00:00:00
abstract::Nitrification, the aerobic oxidation of ammonia to nitrate via nitrite, has been suggested to have been a central part of the global biogeochemical nitrogen cycle since the oxygenation of Earth. The cultivation of several ammonia-oxidizing archaea (AOA) as well as the discovery that archaeal ammonia monooxygenase (amo...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章,评审
doi:10.1128/AEM.01960-12
更新日期:2012-11-01 00:00:00
abstract::Biotransformation of 2-chlorophenol by a methanogenic sediment community resulted in the transient accumulation of phenol and benzoate. 3-Chlorobenzoate was a more persistent product of 2-chlorophenol metabolism. The anaerobic biotransformation of phenol to benzoate presumably occurred via para-carboxylation and dehyd...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.65.11.5169-5172.1999
更新日期:1999-11-01 00:00:00
abstract::Formation of dental plaque is a developmental process involving initial and late colonizing species that form polymicrobial communities. Fusobacteria are the most numerous gram-negative bacteria in dental plaque, but they become prevalent after the initial commensal colonizers, such as streptococci and actinomyces, ha...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.02901-08
更新日期:2009-05-01 00:00:00
abstract::Ninety-nine Campylobacter coli isolates were examined by bacterial restriction endonuclease DNA analysis (BRENDA) with HindIII. Isolates from poultry from the same environment had identical patterns, patterns of isolates carried by suckling piglets were generally the same as those of isolates recovered from their dams...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.48.3.545-549.1984
更新日期:1984-09-01 00:00:00
abstract::The putative role of biting flies in Bartonella transmission among ruminants was investigated. Amplification of the Bartonella citrate synthase gene from 83 Hippoboscidae was detected in 94% of 48 adult Lipoptena cervi flies, 71% of 17 adult Hippobosca equina flies, 100% of 20 adult Melophagus ovinus flies, and 100% o...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.70.10.6302-6305.2004
更新日期:2004-10-01 00:00:00
abstract::A number of Micromonospora strains isolated from the water column, sediment, and cellulose baits placed in freshwater lakes were shown to be able to degrade cellulose in lake water without any addition of nutrients. A selective isolation method was also developed to demonstrate that CFU arose from both spores and hyph...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.01092-08
更新日期:2008-11-01 00:00:00