Abstract:
:Three Methocel methylcellulose ethers of 1.9 degree of substitution with [14C]methyl labels were shown to be biodegradable using batch-type activated sludge tests. The maximum rate for conversion to 14CO2, attained after 1 week, was only 0.62 mg of methylcellulose/g of mixed liquor volatile solids per day. In 20 days, 55 to 73% of the radioactivity had been removed from solution as 14CO2, and the suspended solids contained 12 to 15% of the original radioactivity. Only 4% of the original methylcellulose appeared to be polymeric after the 20-day period. Thin-layer chromatography of supernatant liquid indicated at least two degradation products.
journal_name
Appl Environ Microbioljournal_title
Applied and environmental microbiologyauthors
Blanchard FA,Takahashi IT,Alexander HCdoi
10.1128/AEM.32.4.557-560.1976subject
Has Abstractpub_date
1976-10-01 00:00:00pages
557-60issue
4eissn
0099-2240issn
1098-5336journal_volume
32pub_type
杂志文章abstract::Light-dependent regulation of cell cycle progression in the marine cyanobacterium Synechococcus strain WH-8101 was demonstrated through the use of flow cytometry. Our results show that, similar to eucaryotic cells, marine Synechococcus spp. display two gaps in DNA synthesis, at the beginning and at the end of the cell...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.55.2.425-432.1989
更新日期:1989-02-01 00:00:00
abstract::The common reed (Phragmites australis), a cosmopolitan aquatic macrophyte, plays an important role in the structure and function of aquatic ecosystems. We compared bacterial community compositions (BCCs) and their assembly processes in the root-associated compartments (i.e., rhizosphere and endosphere) of reed and bul...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.00379-20
更新日期:2020-07-02 00:00:00
abstract::Bacterial plasmolytic response to osmotic stress was evaluated as a physical indicator of membrane integrity and hence cellular viability. Digital image analysis and either low-magnification dark-field, high-magnification phase-contrast, or confocal laser microscopy, in conjunction with pulse application of a 1.5 M Na...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.62.11.3939-3947.1996
更新日期:1996-11-01 00:00:00
abstract::Eubacterium lentum is a gram-positive, nonsporeforming, nonmotile, asaccharolytic anaerobe. In the present investigations, 3 E. lentum strains (group E) isolated from rat feces were compared with 30 E. lentum strains (groups A, B, C, and D) previously studied by Macdonald et al. (I. A. Macdonald, J. F. Jellet, D. E. M...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.47.1.39-43.1984
更新日期:1984-01-01 00:00:00
abstract::Mechanisms for Fe(III) oxide reduction were investigated in Geothrix fermentans, a dissimilatory Fe(III)-reducing microorganism found within the Fe(III) reduction zone of subsurface environments. Culture filtrates of G. fermentans stimulated the reduction of poorly crystalline Fe(III) oxide by washed cell suspensions,...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/aem.68.5.2294-2299.2002
更新日期:2002-05-01 00:00:00
abstract::The fate of Listeria monocytogenes during refrigerated storage was determined on several processed meat products, including ham, bologna, wieners, sliced chicken, sliced turkey, fermented semidried sausage, bratwurst, and cooked roast beef. The meats were surface inoculated with a five-strain mixture of less than or e...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.55.6.1565-1569.1989
更新日期:1989-06-01 00:00:00
abstract::Digital dermatitis (DD) is an important cause of lameness in dairy cattle worldwide. It has now been reported in beef cattle and also sheep (contagious ovine digital dermatitis [CODD]). Three Treponema phylogroups are consistently isolated from lesions, Treponema medium-like, Treponema phagedenis-like, and Treponema p...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.01956-15
更新日期:2015-11-01 00:00:00
abstract::Recently, a new metabolic link between fatty acid de novo biosynthesis and biosynthesis of poly(3-hydroxy-alkanoate) consisting of medium-chain-length constituents (C(6) to C(14)) (PHA(MCL)), catalyzed by the 3-hydroxydecanoyl-[acyl-carrier-protein]:CoA transacylase (PhaG), has been identified in Pseudomonas putida (B...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/aem.66.5.2117-2124.2000
更新日期:2000-05-01 00:00:00
abstract::An accurate most-probable-number enumeration method was developed for counting the number of Beggiatoa trichomes from various freshwater sediments. The medium consisted of extracted hay, diluted soil extract, 0.05% acetate, and 15 to 35 U of catalase per ml. The same enrichment medium, but without the acetate, was the...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.36.5.755-770.1978
更新日期:1978-11-01 00:00:00
abstract::Specific Saccharomyces cerevisiae strains were recently found to be capable of efficiently utilizing inulin, but genetic mechanisms of inulin hydrolysis in yeast remain unknown. Here we report functional characteristics of invertase SUC2 from strain JZ1C and demonstrate that SUC2 is the key enzyme responsible for inul...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.02658-12
更新日期:2013-01-01 00:00:00
abstract::Thiosphaera pantotropha is capable of simultaneous heterotrophic nitrification and aerobic denitrification. Consequently, its nitrification potential could not be judged from nitrite accumulation, but was estimated from complete nitrogen balances. The maximum rate of nitrification obtained during these experiments was...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.54.11.2812-2818.1988
更新日期:1988-11-01 00:00:00
abstract::Preliminary observations in a large-scale fermentation process suggested that the lipase expression of Pseudomonas alcaligenes can be switched on by the addition of certain medium components, such as soybean oil. In an attempt to elucidate the mechanism of induction of lipase expression, we have set up a search method...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.01632-07
更新日期:2008-03-01 00:00:00
abstract::Escherichia coli isolates from rectal swabs from 62 chickens and stools from 42 children living in close contact with chickens on the same farms in Kiambu district, Kenya, were compared for their genetic relatedness. Antibiotic susceptibility profiles broadly categorized isolates from the children and from the chicken...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.65.2.472-476.1999
更新日期:1999-02-01 00:00:00
abstract::Heat inactivation of mycobacteria from lesions and from culture was compared in meat products. In vivo-grown organisms were more easily heat inactivated than were in vitro-grown organisms. ...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.41.6.1484-1485.1981
更新日期:1981-06-01 00:00:00
abstract::A dot blot hybridization procedure with 32P-labeled whole chromosomal DNA of the type strains as probes was developed as a rapid and simple method for identification of intestinal Bacteroides species. Bacterial cells were fixed onto membrane filters by slight suction, treated with 0.5 N NaOH, and hybridized with these...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.54.5.1158-1162.1988
更新日期:1988-05-01 00:00:00
abstract::Sequence analysis of the five genes (gutRMCBA) downstream from the previously described sorbitol-6-phosphate dehydrogenase-encoding Lactobacillus casei gutF gene revealed that they constitute a sorbitol (glucitol) utilization operon. The gutRM genes encode putative regulators, while the gutCBA genes encode the EIIC, E...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.00230-08
更新日期:2008-09-01 00:00:00
abstract::To understand the ecological and genetic role of viruses in the marine environment, it is critical to know the infectivity of viruses and the types of interactions that occur between marine viruses and their hosts. We isolated four marine phages from turbid plaques by using four indigenous bacterial hosts obtained fro...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.64.2.535-542.1998
更新日期:1998-02-01 00:00:00
abstract::Microbial communities from a subseafloor sediment core from the southwestern Sea of Okhotsk were evaluated by performing both cultivation-dependent and cultivation-independent (molecular) analyses. The core, which extended 58.1 m below the seafloor, was composed of pelagic clays with several volcanic ash layers contai...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/aem.69.12.7224-7235.2003
更新日期:2003-12-01 00:00:00
abstract::Shuttle vectors that replicate stably and express selectable phenotypes in both Thermococcus kodakaraensis and Escherichia coli have been constructed. Plasmid pTN1 from Thermococcus nautilis was ligated to the commercial vector pCR2.1-TOPO, and selectable markers were added so that T. kodakaraensis transformants could...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.00305-08
更新日期:2008-05-01 00:00:00
abstract::Symbiotic microorganisms are widespread in nature and can play a major role in the ecology and evolution of animals. The aphid-Serratia symbiotica bacterium interaction provides a valuable model to study the mechanisms behind these symbiotic associations. The recent discovery of cultivable S. symbiotica strains with a...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.02445-18
更新日期:2019-05-02 00:00:00
abstract::Previous studies from this laboratory have documented the presence of coliform bacteria emanating from wooden reservoirs containing finished drinking water. Coliforms were identified as Klebsiella pneumoniae and Enterobacter spp. In the present report, evidence is presented which suggests that the origin of these coli...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.36.1.178-185.1978
更新日期:1978-07-01 00:00:00
abstract::A new virulent phage belonging to the Siphoviridae family and able to infect Lactococcus garvieae strains was isolated from compost soil. Phage GE1 has a prolate capsid (56 by 38 nm) and a long noncontractile tail (123 nm). It had a burst size of 139 and a latent period of 31 min. Its host range was limited to only tw...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.02603-15
更新日期:2015-12-01 00:00:00
abstract::Although Pelobacter species are closely related to Geobacter species, recent studies suggested that Pelobacter carbinolicus may reduce Fe(III) via a different mechanism because it lacks the outer-surface c-type cytochromes that are required for Fe(III) reduction by Geobacter sulfurreducens. Investigation into the mech...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.02901-07
更新日期:2008-07-01 00:00:00
abstract::Two different Cd(2+) uptake systems were identified in Lactobacillus plantarum. One is a high-affinity, high-velocity Mn(2+) uptake system which also takes up Cd(2+) and is induced by Mn(2+) starvation. The calculated K(m) and V(max) are 0.26 microM and 3.6 micromol g of dry cell(-1) min(-1), respectively. Unlike Mn(2...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.65.11.4741-4745.1999
更新日期:1999-11-01 00:00:00
abstract::Despite the increasing knowledge of Synechococcus spp. and their co-occurring cyanophages in oceanic and coastal water, little is known about their abundance, distribution, and interactions in the Chesapeake Bay estuarine ecosystem. A 5-year interannual survey shows that Synechococcus spp. and their phages are persist...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.00267-11
更新日期:2011-11-01 00:00:00
abstract::Free-living soybean rhizobia and Bradyrhizobium spp. (lupine) have the ability to catabolize ethanol. Of the 30 strains of rhizobia examined, only the fast- and slow-growing soybean rhizobia and the slow-growing Bradyrhizobium sp. (lupine) were capable of using ethanol as a sole source of carbon and energy for growth....
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.52.4.951-953.1986
更新日期:1986-10-01 00:00:00
abstract::Oligodeoxynucleotide hybridization probes were developed to complement specific regions of the small subunit (SSU) rRNA sequences of cultivated and uncultivated cyanobacteria and Chloroflexus-like bacteria, which inhabit hot spring microbial mats. The probes were used to investigate the natural distribution of SSU rRN...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.60.2.697-704.1994
更新日期:1994-02-01 00:00:00
abstract::Two anaerobic bacteria were isolated from polyethylene glycol (PEG)-degrading, methanogenic, enrichment cultures obtained from a municipal sludge digester. One isolate, identified as Desulfovibrio desulfuricans (strain DG2), metabolized oligomers ranging from ethylene glycol (EG) to tetraethylene glycol. The other iso...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.52.4.852-856.1986
更新日期:1986-10-01 00:00:00
abstract::Rotavirus virus-like particles (VLPs) and MS2 bacteriophages were bioaccumulated in bivalve mollusks to evaluate viral persistence in shellfish during depuration and relaying under natural conditions. Using this nonpathogenic surrogate virus, we were able to demonstrate that about 1 log10 of VLPs was depurated after 1...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.71.10.6049-6053.2005
更新日期:2005-10-01 00:00:00
abstract::A previously identified insert expressing an endopeptidase from a Lactobacillus helveticus CNRZ32 genomic library was characterized. Nucleotide sequence analysis revealed an open reading frame of 1,941 bp encoding a putative protein of 71.2 kDa which contained a zinc-protease motif. Protein homology searches revealed ...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.64.9.3411-3415.1998
更新日期:1998-09-01 00:00:00