Abstract：
:In this study, we developed a novel technique for preparing polyvinyl alcohol (PVA) hydrogel as an immobilizing matrix by the addition of sodium bicarbonate. This resulted in an increase in the specific surface area of PVA_sodium bicarbonate (PVA_SB) hydrogel beads to 65.23 m(2) g(-1) hydrogel beads, which was approximately 85 and 14 % higher than those of normal PVA and PVA_sodium alginate (PVA_SA) hydrogel beads, respectively. The D e value of PVA_SB hydrogel beads was calculated as 7.49 × 10(-4) cm(2) s(-1), which was similar to the D e of PVA_SA hydrogel beads but nearly 38 % higher than that of the normal PVA hydrogel beads. After immobilization with nitrifying biomass, the oxygen uptake rate and the ammonium oxidation rate of nitrifying biomass entrapped in PVA_SB hydrogel beads were determined to be 19.53 mg O2 g MLVSS(-1) h(-1) and 10.59 mg N g MLVSS(-1) h(-1), which were 49 and 43 % higher than those of normal PVA hydrogel beads, respectively. Scanning electron microscopy observation of the PVA_SB hydrogel beads demonstrated relatively higher specific surface area and revealed loose microstructure that was considered to provide large spaces for microbial growth. This kind of structure was also considered beneficial for reducing mass transfer resistance and increasing pollutant uptake.
journal_name
World J Microbiol Biotechnoljournal_title
World journal of microbiology & biotechnologyauthors
Qiao S,Duan X,Zhou J,Cheng Y,Bhatti Zdoi
10.1007/s11274-014-1621-4subject
Has Abstractpub_date
2014-07-01 00:00:00pages
1985-92issue
7eissn
0959-3993issn
1573-0972journal_volume
30pub_type
杂志文章abstract：:Olive trees play an important role in cultural, ecological, environmental and social fields, constituting in large part the Mediterranean landscape. In Tuscany, an important economic activity is based on olive. Unfortunately, the Verticillium wilt affects this species and causes vascular disease. In the present study,...
journal_title：World journal of microbiology & biotechnology
pub_type： 杂志文章
doi：10.1007/s11274-013-1342-0
更新日期：2013-10-01 00:00:00
abstract：:An extracellular polygalacturonase (EC 3.2.1.15) fromGeotrichum candidum ATCC 34614 grown onsauerkraut brine was produced and characterized. Polygalacturonic acid markedly increased the enzyme yield in the brine. The fungus produced the highest activity (290 U/l) in brine with 0.3% (w/v) polygalacturonic acid. The pH ...
journal_title：World journal of microbiology & biotechnology
pub_type： 杂志文章
doi：10.1007/BF01201944
更新日期：1992-09-01 00:00:00
abstract：:Paclitaxel is a highly toxic anticancer agent which is used in a wide range against ovarian, breast, lung, and prostate cancers. Paclitaxel is manufactured recently in the north of Iran which may lead to the introduction of the drug into the environment via pharmaceutical wastewater. To our knowledge, Paclitaxel degra...
journal_title：World journal of microbiology & biotechnology
pub_type： 杂志文章
doi：10.1007/s11274-016-2087-3
更新日期：2016-08-01 00:00:00
abstract：:An extracellular lipase producing isolate Staphylococcus sp. MS1 was optimized for lipase production and its biocatalytic potential was assessed. Medium with tributyrin (0.25 %) and without any exogenous inorganic nitrogen source was found to be optimum for lipase production from Staphylococcus sp. MS1. The optimum pH...
journal_title：World journal of microbiology & biotechnology
pub_type： 杂志文章
doi：10.1007/s11274-014-1715-z
更新日期：2014-11-01 00:00:00
abstract：:Saline wastewaters are usually generated by various industries, including the chemical, pharmaceutical, agricultural, and aquacultural industries. The discharge of untreated high-salinity wastewater may cause serious environmental pollution and damage the aquatic, terrestrial, and wetland ecosystems. For many countrie...
journal_title：World journal of microbiology & biotechnology
pub_type： 杂志文章,评审
doi：10.1007/s11274-020-02815-4
更新日期：2020-02-22 00:00:00
abstract：:Hydroxy long-chain fatty acids occur widely in animals and plants and have important physiological activities in these eukaryotes. There are indications that these compounds are also common and important in fungi. The occurrence of hydroxy-polyunsaturated fatty acids (hydroxy-PUFAs) is of biotechnological importance, ...
journal_title：World journal of microbiology & biotechnology
pub_type： 杂志文章
doi：10.1007/BF00367653
更新日期：1994-09-01 00:00:00
abstract：:The effects of different alkyl chain lengths of ionic liquids 1-ethyl-, 1-butyl- and 1-hexyl-3-methylimidazolium chloride, on the catalytic activity, thermal stability and deactivation kinetics of horseradish peroxidase were studied in the temperature range of 45-85 °C. The presence of 1-ethyl- and 1-butyl-ionic liqui...
journal_title：World journal of microbiology & biotechnology
pub_type： 杂志文章
doi：10.1007/s11274-013-1466-2
更新日期：2014-02-01 00:00:00
abstract：:A key constraint in successfully obtaining an effective inoculant is overcoming difficulties in formulating a viable and user-friendly final product and maintaining the microbial cells in a competent state. Co-cultures of rhizobia and PGPR (Plant Growth Promoting Rhizobacteria) are a logical next subject for formulati...
journal_title：World journal of microbiology & biotechnology
pub_type： 杂志文章
doi：10.1007/s11274-012-1062-x
更新日期：2012-07-01 00:00:00
abstract：:The biomass degrading enzymatic potential of 101 thermophilic bacterial strains isolated from a volcanic environment (Santorini, Aegean Sea, Greece) was assessed. 80 % of the strains showed xylanolytic activity in Congo Red plates, while only eight could simultaneously hydrolyze cellulose. Fifteen isolates were select...
journal_title：World journal of microbiology & biotechnology
pub_type： 杂志文章
doi：10.1007/s11274-012-1100-8
更新日期：2012-09-01 00:00:00
abstract：:Ethanol tolerance, osmotolerance and sugar conversion efficiency were used to screen yeasts for potential ethanol production from sweet-stem sorghum juice. Of the ten strains of Saccharomyces sp. that produced ethanol from the sorghum juice or from yeast extract/phosphate/sucrose (YEPS) media, the best sugar conversio...
journal_title：World journal of microbiology & biotechnology
pub_type： 杂志文章
doi：10.1007/BF00340211
更新日期：1996-07-01 00:00:00
abstract：:Orange juice is a major agricultural product, and oranges are among the most widely sold fresh fruits in several countries. Citrus black spot (CBS), caused by the fungus Phyllosticta citricarpa, affects almost every species of citrus, causing a esthetic depreciation of the fruit and fruit drop, with consequent financi...
journal_title：World journal of microbiology & biotechnology
pub_type： 杂志文章
doi：10.1007/s11274-019-2772-0
更新日期：2019-12-16 00:00:00
abstract：:Oxalic acid plays major role in the pathogenesis by Sclerotinia sclerotiorum; it lowers the pH of nearby environment and creates the favorable condition for the infection. In this study we examined the degradation of oxalic acid through oxalate oxidase and biocontrol of Sclerotinia sclerotiorum. A survey was conducted...
journal_title：World journal of microbiology & biotechnology
pub_type： 杂志文章
doi：10.1007/s11274-012-1130-2
更新日期：2012-11-01 00:00:00
abstract：:The co-culture of cellulolytic moulds and yeasts on apple pomace in solid-state fermentation (SSF) and liquid-state fermentation (LSF) increased the protein content of apple pomace. The co-culture of Candida utilis and Aspergillus niger was the best among several combinations and increased the protein content of dried...
journal_title：World journal of microbiology & biotechnology
pub_type： 杂志文章
doi：10.1007/BF00357577
更新日期：1994-01-01 00:00:00
abstract：:Cadmium ions in wastewater can be removed by biosorption on to Acinetobacter calca var. antratus, isolated from a wastewater sample from a copper refinery. There are two equillibrium states: the first, which is reached quickly, is probably direct adsorption, and the second may be due to the release of ion adsorption m...
journal_title：World journal of microbiology & biotechnology
pub_type： 杂志文章
doi：10.1007/BF00368363
更新日期：1991-09-01 00:00:00
abstract：:Pseudomonas strains were isolated from the rhizosphere of maize grown in yellow-red latosol from Rio de Janeiro, Brazil, to serve as a delivery system for heterologous genes and for risk assessment studies in tropical soils. Selected strains were modified by insertion of the cryIVB gene from Bacillus thuringiensis and...
journal_title：World journal of microbiology & biotechnology
pub_type： 杂志文章
doi：10.1007/BF00327720
更新日期：1996-11-01 00:00:00
abstract：:Catechol 2,3-oxygenase was produced by Escherichia coli, harbouring the recombinant plasmid pBH100 which contained the pheB gene cloned from phenol-degrading Pseudomonas putida BH, and was applied for the determination of catechol in the liquor. E. coli JM103 (pBH100) and C600 (pBH100) showed, respectively, about 5 an...
journal_title：World journal of microbiology & biotechnology
pub_type： 杂志文章
doi：10.1007/BF00329409
更新日期：1991-05-01 00:00:00
abstract：:This study was conducted to report the richness of endophytic Penicillium and Talaromyces species isolated from Tillandsia catimbauensis, a bromeliad endemic in the Brazilian tropical dry forest (Caatinga), to verify their ability to produce the enzyme L-asparaginase and to partially optimise the production of biomass...
journal_title：World journal of microbiology & biotechnology
pub_type： 杂志文章
doi：10.1007/s11274-018-2547-z
更新日期：2018-10-28 00:00:00
abstract：:Curious or skeptical friends often ask, "What and why is COBIOTECH? What is it doing?" After serving as president during its formative first years, I attempt here to provide information for the curious and allay concerns of the skeptics about COBIOTECH'S emerging role in biotechnology internationally. ...
journal_title：World journal of microbiology & biotechnology
pub_type： 杂志文章
doi：10.1007/BF00452835
更新日期：1991-11-01 00:00:00
abstract：:Extensive usage of antibiotics has led to the emergence of drug-resistant strains of pathogens and hence, there is an urgent need for alternative antimicrobial agents. Antimicrobial Peptides (AMPs) of bacterial origin have shown the potential to replace some conventional antibiotics. In the present study, an AMP was i...
journal_title：World journal of microbiology & biotechnology
pub_type： 杂志文章
doi：10.1007/s11274-020-02989-x
更新日期：2021-01-11 00:00:00
abstract：:This study investigated effects of wet and dry seasons on the bacterial community structure of the Three Gorges Reservoir by using denaturing gradient gel electrophoresis analysis of the PCR-amplified bacterial 16S rRNA gene. Bacterial diversity, as determined by the Shannon index, the Simpson's index, and the Richnes...
journal_title：World journal of microbiology & biotechnology
pub_type： 杂志文章
doi：10.1007/s11274-012-1239-3
更新日期：2013-05-01 00:00:00
abstract：:Bacillus amyloliquefaciens strain WF02, isolated from soil collected at Wufeng Mountain, Taiwan, has siderophore-producing ability and in vitro antagonistic activity against bacterial wilt pathogen. To determine the impact of plant genotype on biocontrol effectiveness, we treated soil with this strain before infecting...
journal_title：World journal of microbiology & biotechnology
pub_type： 杂志文章
doi：10.1007/s11274-016-2143-z
更新日期：2016-11-01 00:00:00
abstract：:Lactic acid bacteria (LAB) isolated from different sources (dairy products, fruits, fresh and fermented vegetables, fermented cereals) were screened for antimicrobial activity against other bacteria, including potential pathogens and food spoiling bacteria. Six strains have been shown to produce bacteriocins: Lactococ...
journal_title：World journal of microbiology & biotechnology
pub_type： 杂志文章
doi：10.1007/s11274-014-1671-7
更新日期：2014-09-01 00:00:00
abstract：:Heavy-metal chromium [Cr(VI)] is a ubiquitous environmental pollutant. Comparing with chemical reduction, microbiological reduction is considered to be a friendly and cheaper way to decrease the damage caused by chromate. A bacterial strain, CR-07, which is resistant to and capable of reducing chromate was isolated fr...
journal_title：World journal of microbiology & biotechnology
pub_type： 杂志文章
doi：10.1007/s11274-011-0962-5
更新日期：2012-04-01 00:00:00
abstract：:Dissolved oxygen (DO) is a significant operational parameter in biological systems. In this study, a pilot-scale biofilter was constructed to investigate the removal efficiency of ammonia, iron and manganese, as well as the microbial community structure evolution at different DO concentrations. Results indicated that ...
journal_title：World journal of microbiology & biotechnology
pub_type： 杂志文章
doi：10.1007/s11274-019-2617-x
更新日期：2019-02-19 00:00:00
abstract：:Polyhydroxyalkanoates (PHAs) are a class of high-molecular-weight polyesters made from hydroxy fatty acid monomers. PHAs produced by microorganisms have diverse structures, variable physical properties, and good biodegradability. They exhibit similar physical properties to petroleum-based plastics but are much more en...
journal_title：World journal of microbiology & biotechnology
pub_type： 杂志文章,评审
doi：10.1007/s11274-020-02986-0
更新日期：2021-01-04 00:00:00
abstract：:A rapid, simple and sensitive method for detection of ferulic and p-coumaric acids using HPLC has been developed which can be used to determine the respective phenolic acid esterase activities of microorganisms. Prior concentration, purification or derivatization of the samples are not required. As little as 0.5 mg fe...
journal_title：World journal of microbiology & biotechnology
pub_type： 杂志文章
doi：10.1007/BF00360920
更新日期：1996-05-01 00:00:00
abstract：:Biosurfactant-producing microorganisms inhabiting oil reservoirs are of great potential in industrial applications. Yet, till now, the knowledge about the structure and physicochemical property of their metabolites are still limited. The aim of this study was to purify and structurally characterize the biosurfactant f...
journal_title：World journal of microbiology & biotechnology
pub_type： 杂志文章
doi：10.1007/s11274-013-1565-0
更新日期：2014-05-01 00:00:00
abstract：:Cultural tourism expanded in the last half of the twentieth century, and the interest of visitors has come to include caves containing archaeological remains. Some show caves attracted mass tourism, and economical interests prevailed over conservation, which led to a deterioration of the subterranean environment and t...
journal_title：World journal of microbiology & biotechnology
pub_type： 杂志文章,评审
doi：10.1007/s11274-012-1070-x
更新日期：2012-07-01 00:00:00
abstract：:Aquilaria malaccensis produces agarwood in response to wounding and fungal attack. However, information is limited regarding Aquilaria's interaction with its diverse fungal community. In this study, time-related changes of three natural fungal colonizers in two wounded wild A. malaccensis were tracked, beginning a few...
journal_title：World journal of microbiology & biotechnology
pub_type： 杂志文章
doi：10.1007/s11274-014-1668-2
更新日期：2014-09-01 00:00:00
abstract：:Filamentous fungi, isolated from the enriched surface of garden soil, were screened for α-galactosidase production after growing on wheat-bran/carbohydrate substrate. One isolate,Aspergillus niger, had the highest enzyme activity (5.1×10(-2) units/mg protein) at pH 5.0 and 50°C. Treatment of cowpea flour with the crud...
journal_title：World journal of microbiology & biotechnology
pub_type： 杂志文章
doi：10.1007/BF01238789
更新日期：1992-11-01 00:00:00
