Abstract：
:Safe and eco-friendly alternatives to currently used hazardous chemico-physical methods of silver nanoparticles (AgNPs) synthesis are need of time. Rapid, low cost, selective detection of toxic metals in environmental sample is important to take safety action. Toxicity assessment of engineered AgNPs is essential to avoid its side effects on human and non-target organisms. In the present study, biologically active latex from Euphorbia heterophylla (Poinsettia) was utilized for synthesis of AgNPs. AgNPs was of spherical shape and narrow size range (20-50 nm). Occurrence of elemental silver and crystalline nature of AgNPs was analyzed. Role of latex metabolites in reduction and stabilization of AgNPs was analyzed by FT-IR, protein coagulation test and phytochemical analysis. Latex-synthesized AgNPs showed potential in selective and sensitive detection of toxic mercury ions (Hg(2+)) with limit of detection around 100 ppb. Addition of Hg(2+) showed marked deviation in color and surface plasmon resonance spectra of AgNPs. Toxicity studies on aquatic non-target species Daphnia magna showed that latex-synthesized AgNPs (20.66 ± 1.52% immobilization) were comparatively very less toxic than chemically synthesized AgNPs (51.66 ± 1.52% immobilization). Similarly, comparative toxicity study on human red blood cells showed lower hemolysis (4.46 ± 0.01%) by latex-synthesized AgNPs as compared to chemically synthesized AgNPs causing 6.14 ± 0.01% hemolysis.
journal_name
Bioprocess Biosyst Engjournal_title
Bioprocess and biosystems engineeringauthors
Borase HP,Patil CD,Salunkhe RB,Suryawanshi RK,Salunke BK,Patil SVdoi
10.1007/s00449-014-1200-ysubject
Has Abstractpub_date
2014-11-01 00:00:00pages
2223-33issue
11eissn
1615-7591issn
1615-7605journal_volume
37pub_type
杂志文章abstract：:The discovery of quorum sensing as a mechanism for regulating specific phenotypes in bacteria based on population density has conveyed attention to find molecules capable of interfering quorum sensing networks (QSN) in a process coined quorum quenching. Here, we examined the dynamics of Escherichia coli AI-2 and Pseud...
journal_title：Bioprocess and biosystems engineering
pub_type： 杂志文章
doi：10.1007/s00449-008-0276-7
更新日期：2009-06-01 00:00:00
abstract：:Menaquinone homologs (MK-n), that is, MK-4, MK-5, and MK-6, can be produced by the fermentation of Flavobacterium. In this study, we proposed a simple and efficient method for the extraction of menaquinones from wet cells without the process of drying the biomass. Meanwhile, a rapid and effective solution for the sepa...
journal_title：Bioprocess and biosystems engineering
pub_type： 杂志文章
doi：10.1007/s00449-017-1851-6
更新日期：2018-01-01 00:00:00
abstract：:The effects of light, pH and organic carbon sources were investigated on hydrogen production by algae. An optical fiber was examined as an internal light source. The optical fiber rendered prolonged lag time and total time of hydrogen production. The optimal pH to produce hydrogen for Chlorella sp. was 8.0. Glucose, f...
journal_title：Bioprocess and biosystems engineering
pub_type： 杂志文章
doi：10.1007/s00449-012-0819-9
更新日期：2013-07-01 00:00:00
abstract：:In the present investigation, growth kinetics of Kocuria marina DAGII during batch production of β-Cryptoxanthin (β-CRX) was studied by considering the effect of glucose and maltose as a single and binary substrate. The importance of mixed substrate over single substrate has been emphasised in the present study. Diffe...
journal_title：Bioprocess and biosystems engineering
pub_type： 杂志文章
doi：10.1007/s00449-016-1678-6
更新日期：2017-01-01 00:00:00
abstract：:Of various metal ions (Ca2+, Cr3+, Cu2+, Fe2+, Mg2+, Mn2+, Ni2+ and Zn2+) added to the culture medium of Agrobacterium tumefaciens at 1 mM, only Ca2+ increased Coenzyme Q10 (CoQ(10)) content in cells without the inhibition of cell growth. In a pH-stat fed-batch culture, supplementation with 40 mM of CaCO3 increased th...
journal_title：Bioprocess and biosystems engineering
pub_type： 杂志文章
doi：10.1007/s00449-009-0318-9
更新日期：2009-08-01 00:00:00
abstract：:Bio-catalytic in vitro multistep reactions can be combined in a single step in one pot by optimizing multistep reactions under identical reaction condition. Using this analogy, the process of making PEGylated insulin, IN-105, was simplified. Instead of taking the purified active insulin bulk powder as the starting mat...
journal_title：Bioprocess and biosystems engineering
pub_type： 杂志文章
doi：10.1007/s00449-012-0722-4
更新日期：2012-10-01 00:00:00
abstract：:A biosurfactant producing microbe isolated from a river bank was identified as Lysinibacillus fusiformis S9. It was identified with help of biochemical tests and 16S rRNA gene phylogenetic analysis. The biosurfactant S9BS produced was purified and characterized as glycolipid. The biosurfactant showed remarkable inhibi...
journal_title：Bioprocess and biosystems engineering
pub_type： 杂志文章
doi：10.1007/s00449-013-0976-5
更新日期：2014-02-01 00:00:00
abstract：:This work is focused on the characterization of a commercial cellulase in terms of optimum pH and temperature, stability to pH and temperature and affinity of this enzyme to several substrates, determining the Michaelis-Menten parameters. Maximum activity of cellulase was obtained for the temperature range from 40 to ...
journal_title：Bioprocess and biosystems engineering
pub_type： 杂志文章
doi：10.1007/s00449-012-0710-8
更新日期：2012-09-01 00:00:00
abstract：:MnS is a p-type semiconductor with both antiferromagnetism and wide band gap, endowing it potential applications for short wavelength optoelectronic devices, solar cells and luminescent materials. Despite successful biosynthesis of nano CdS, PbS and ZnS with extremely low solubility product, there have been no reports...
journal_title：Bioprocess and biosystems engineering
pub_type： 杂志文章
doi：10.1007/s00449-014-1261-y
更新日期：2015-02-01 00:00:00
abstract：:Lipase-catalyzed caffeic acid phenethyl ester (CAPE) synthesis in ionic liquid, 1-ethyl-3-methylimidazolium bis[(trifluoromethyl)sulfonyl]imide ([Emim][Tf(2)N]), was investigated in this study. The effects of several reaction conditions, including reaction time, reaction temperature, substrate molar ratio of phenethyl...
journal_title：Bioprocess and biosystems engineering
pub_type： 杂志文章
doi：10.1007/s00449-013-0906-6
更新日期：2013-06-01 00:00:00
abstract：:UV photolysis was used to relieve inhibition of biomass growth by sulfadiazine (SD), a broad-spectrum anti-microbial. To investigate the effects of SD on biomass growth, three substrates-glucose alone (G), glucose plus sulfadiazine (G+SD), and glucose plus photolyzed SD (G+PSD)-were used to culture the bacteria acclim...
journal_title：Bioprocess and biosystems engineering
pub_type： 杂志文章
doi：10.1007/s00449-014-1335-x
更新日期：2015-05-01 00:00:00
abstract：:A kinetic model for glucose and xylose co-substrate uptake in Saccharomyces cerevisiae is presented. The model couples the enzyme kinetics with the glucose-dependent genetic expression of the individual transport proteins. This novel approach implies several options for optimizing the co-substrate utilization. Interes...
journal_title：Bioprocess and biosystems engineering
pub_type： 杂志文章
doi：10.1007/s00449-007-0169-1
更新日期：2008-06-01 00:00:00
abstract：:Polyhydroxybutyrate (PHB) is a biodegradable bioplastic that is comparable with many petroleum-based plastics in terms of mechanical properties and is highly biocompatible. Lignocellulosic biomass conversion into PHB can increase profit and add sustainability. Glucose, xylose and arabinose are the main monomer sugars ...
journal_title：Bioprocess and biosystems engineering
pub_type： 杂志文章
doi：10.1007/s00449-020-02434-1
更新日期：2021-01-01 00:00:00
abstract：:Economical production of xylanase and three cellulases, endo-β-1,4-glucanase (CMCase), exo-β-1,4-glucanase (FPase), β-glucosidase (BGL) was studied in submerged fermentation using cane molasses medium. A statistical optimization approach involving Plackett-Burman design and response surface methodology (RSM) resulted ...
journal_title：Bioprocess and biosystems engineering
pub_type： 杂志文章
doi：10.1007/s00449-015-1502-8
更新日期：2016-01-01 00:00:00
abstract：:Several carbon sources were investigated for the production of 1,3-propanediol (PDO) and 2,3-butanediol (BDO) simultaneously, using an isolated indigenous Klebsiella sp. Ana-WS5. The results indicate that glycerol is a suitable carbon source for both BDO and PDO production. Further investigation suggests that adjustme...
journal_title：Bioprocess and biosystems engineering
pub_type： 杂志文章
doi：10.1007/s00449-013-1008-1
更新日期：2014-03-01 00:00:00
abstract：:The gold-rhenium (AuRe) composite nanoparticle was prepared by NaBH(4) reduction procedure, and was modified by the aptamer to obtain an AuRe nanoprobe (AuRessDNA) for thrombin. In pH 7.0 Tris-HCl buffer solution and in the presence of salt, the nanoprobe specifically combined with thrombin to form AuRe-aptamer-thromb...
journal_title：Bioprocess and biosystems engineering
pub_type： 杂志文章
doi：10.1007/s00449-010-0434-6
更新日期：2010-11-01 00:00:00
abstract：:Incomplete denitrification and ammonia accumulation were found to cause proliferation of filamentous microorganisms in sequencing batch reactors (SBRs) for swine wastewater treatment. Foaming was observed in response to the accumulation of 115.2 and 12.2 mg/L of nitrate and ammonia, respectively. The mixed liquor susp...
journal_title：Bioprocess and biosystems engineering
pub_type： 杂志文章
doi：10.1007/s00449-009-0332-y
更新日期：2010-03-01 00:00:00
abstract：:The performance of down-flow hanging sponge (DHS) system treating UASB reactor effluent at different sponge volume of 38.2, 28.7, 19.1 and 9.6% was investigated. The hydraulic retention time (HRT) and flow rate were kept constant at 2.6 h and 0.46 m(3)/day, respectively. The results obtained indicated that reducing th...
journal_title：Bioprocess and biosystems engineering
pub_type： 杂志文章
doi：10.1007/s00449-009-0399-5
更新日期：2010-09-01 00:00:00
abstract：:Wheat straw is a low-cost feedstock for the production of biofuel. Pretreatment process is an important stage in producing biofuels since it makes the fibers more accessible to enzymatic hydrolysis which is the final step of producing biofuels. Pretreated wheat straw (PWS) slurries are non-Newtonian fluids with yield ...
journal_title：Bioprocess and biosystems engineering
pub_type： 杂志文章
doi：10.1007/s00449-018-1959-3
更新日期：2018-09-01 00:00:00
abstract：:High amounts of outer membrane (OM) components were released in glucose-limited fed-batch (GLFB) cultures at 37 degrees C at specific growth rates approaching 0.05 h(-1). Endotoxin analyses from a 20 degrees C GLFB culture gave similar results. An alternative fermentation technique, the temperature-limited fed-batch (...
journal_title：Bioprocess and biosystems engineering
pub_type： 杂志文章
doi：10.1007/s00449-004-0377-x
更新日期：2005-04-01 00:00:00
abstract：:ε-Poly-L-lysine (ε-PL), one of the only two homo-poly amino acids known in nature, is used as a preservative. In this study, strategies of feeding precursor L-lysine into 5 L laboratory scale fermenters, including optimization of L-lysine concentration and time, was investigated to optimize the production of ε-PL by S...
journal_title：Bioprocess and biosystems engineering
pub_type： 杂志文章
doi：10.1007/s00449-013-0958-7
更新日期：2013-12-01 00:00:00
abstract：:The previous works on simulated broths are continued and developed for Propionibacterium shermanii broths. The obtained results indicated the considerable increase of kLa in presence of n-dodecane as oxygen-vector and the existence of a certain value of hydrocarbon concentration that corresponds to the maximum mass tr...
journal_title：Bioprocess and biosystems engineering
pub_type： 杂志文章
doi：10.1007/s00449-005-0416-2
更新日期：2005-07-01 00:00:00
abstract：:The enzymatic method for synthesising polyglycerol polyricinoleate (PGPR), a food additive named E-476, was successfully carried out in the presence of immobilised Rhizopus oryzae lipase in a solvent-free medium. The great advantage of using the commercial preparation of R. oryzae lipase is that it is ten times cheape...
journal_title：Bioprocess and biosystems engineering
pub_type： 杂志文章
doi：10.1007/s00449-012-0874-2
更新日期：2013-09-01 00:00:00
abstract：:The lack of sensors for some relevant state variables in fermentation processes can be coped by developing appropriate software sensors. In this work, NARX-ANN, NARMAX-ANN, NARX-SVM and NARMAX-SVM models are compared when acting as software sensors of biomass concentration for a solid substrate cultivation (SSC) proce...
journal_title：Bioprocess and biosystems engineering
pub_type： 杂志文章
doi：10.1007/s00449-013-0925-3
更新日期：2014-01-01 00:00:00
abstract：:In this study, a newly isolated ascomycete fungus Trichoderma lixii F21 was explored to bioremediate the polar [Alizarin Red S (ARS)] and non-polar [Quinizarine Green SS (QGSS)] anthraquinone dyes. The bioremediation of ARS and QGSS by T. lixii F21 was found to be 77.78 and 98.31 %, respectively, via biosorption and e...
journal_title：Bioprocess and biosystems engineering
pub_type： 杂志文章
doi：10.1007/s00449-016-1677-7
更新日期：2017-01-01 00:00:00
abstract：:Bacillusfirmus strain 37 produces the cyclomaltodextrin glucanotransferase (CGTase) enzyme and CGTase produces cyclodextrins (CDs) through a starch cyclization reaction. The strategy for the cloning and expression of recombinant CGTase is a potentially viable alternative for the economically viable production of CGTas...
journal_title：Bioprocess and biosystems engineering
pub_type： 杂志文章
doi：10.1007/s00449-018-02068-4
更新日期：2019-04-01 00:00:00
abstract：:An alternating pumped sequencing batch biofilm reactor (APSBBR) system was developed to treat small-scale domestic wastewater. This laboratory system had two reactor tanks, Reactor 1 and Reactor 2, with two identical plastic biofilm modules in each reactor. Reactor 1 of the APSBBR had five operational phases--fill, an...
journal_title：Bioprocess and biosystems engineering
pub_type： 杂志文章
doi：10.1007/s00449-005-0038-8
更新日期：2006-04-01 00:00:00
abstract：:During the production of bio-based bulk chemicals, such as lactic acid (LA), organic impurities have to be removed to produce a ready-to-market product. A capillary electrophoresis method for the simultaneous detection of LA and organic impurities in less than 10 min was developed. LA and organic impurities were detec...
journal_title：Bioprocess and biosystems engineering
pub_type： 杂志文章
doi：10.1007/s00449-017-1761-7
更新日期：2017-07-01 00:00:00
abstract：:A total monosaccharide concentration of 37.8 g/L and 85.9% conversion from total fermentable monosaccharides of 44.0 g/L from 110 g dw/L Eucheuma denticulatum slurry were obtained by thermal acid hydrolysis and enzymatic saccharification. Subsequent adsorption treatment to remove 5-hydroxymethylfurfural (5-HMF) using ...
journal_title：Bioprocess and biosystems engineering
pub_type： 杂志文章
doi：10.1007/s00449-016-1705-7
更新日期：2017-03-01 00:00:00
abstract：:Phosphatidylserine is widely used in food, health, chemical and pharmaceutical industries. The phospholipase D-mediated green synthesis of phosphatidylserine has attracted substantial attention in recent years. In this study, the phospholipase D was heterologously expressed in Bacillus subtilis, Pichia pastoris, and C...
journal_title：Bioprocess and biosystems engineering
pub_type： 杂志文章
doi：10.1007/s00449-019-02116-7
更新日期：2019-07-01 00:00:00
