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You searched for: Publication year rev 7992-2008 Remove constraint Publication year rev: 7992-2008 Subject term acetates Remove constraint Subject term: acetates
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1. A highly sensitive spectrophotometric determination of micro amounts of vanadium(V) in environmental and alloy samples by using 3,4-dihydroxybenzaldehydeisonicotinoylhydrazone (3,4-DHBINH)

Author:
S. Lakshmi Narayana; K. Janardhan Reddy; S. Adi Narayana Reddy; Y. Sarala; A. Varada Reddy
Source:
Environmental monitoring and assessment 2008 v.144 no.1-3 pp. 341-349
ISSN:
0167-6369
Subject:
absorbance; absorption; acetates; alloys; anions; atomic absorption spectrometry; cations; detection limit; leaves; pH; sampling; soil water; spectral analysis; tobacco; vanadium; wavelengths
Abstract:
... 3, 4-Dihydroxybenzaldehydeisonicotinoylhydrazone was prepared, characterized with spectral analyses and used for developing a new method for the simple, sensitive and rapid spectrophotometric determination of vanadium(V) which gives maximum absorbance at wave length 360 nm. The metal ion gives a yellow colored complex with 3, 4-DHBINH in acetate buffer of pH 5.5 with 1:1 (metal:ligand) composition ...
DOI:
10.1007/s10661-007-9997-3

2. A new in vitro system to study the effect of liquid phase turnover and pH on microbial fermentation of concentrate diets for ruminants

Author:
Fondevila, M.; Pérez-Espés, B.
Source:
Animal feed science and technology 2008 v.144 no.3-4 pp. 196-211
ISSN:
0377-8401
Subject:
gas production (biological); in vitro digestion; liquids; feed concentrates; ruminants; ruminant nutrition; rumen microorganisms; rumen fermentation; propionates; acetates; butyrates; forage evaluation; inoculum; volatile fatty acids; batch systems
Abstract:
... A simple and inexpensive in vitro feed evaluation system which estimates microbial fermentation by measuring gas production and allows for adjustment of liquid dilution rate has been design. Working conditions, in terms of substrate and inoculum proportions (experiment 1, EXP 1) and the liquid replacement schedule (experiment 2, EXP 2) were initially set. In EXP 1, three substrate concentrations ( ...
DOI:
10.1016/j.anifeedsci.2007.10.013

3. A new irreversible enzyme-aided esterification method in organic solvents

Author:
Jeromin, Günter E.; Zoor, Annegreth
Source:
Biotechnology letters 2008 v.30 no.5 pp. 925-928
ISSN:
0141-5492
Subject:
Pseudozyma antarctica; acetates; carboxylic acids; esterification; solvents; triacylglycerol lipase
Abstract:
... A new irreversible esterification method for carboxylic acids catalyzed by a lipase from Candida antarctica (Novozyme 435) in organic solvents has been developed. The water produced during the process is chemically destroyed by a corresponding ester of acetoacetate, which acts as a sacrificial substrate in this reaction. The flavour esters isobutyl acetate, methyl butyrate, ethyl butyrate and benz ...
DOI:
10.1007/s10529-007-9632-y
PubMed:
18196460

4. A preliminary in vitro assessment of GroBiotic-A, brewer's yeast and fructooligosaccharide as prebiotics for the red drum Sciaenops ocellatus

Author:
Burr, G.; Hume, M.; Ricke, S.; Nisbet, D.; Gatlin, D. III
Source:
Journal of environmental science and health 2008 v.43 no.3 pp. 253-260
ISSN:
0360-1234
Subject:
fish culture; intestinal microorganisms; volatile fatty acids; acetates; gastrointestinal system; anaerobes; ribosomal DNA; polymerase chain reaction; Sciaenops ocellatus; conserved sequences; Saccharomyces cerevisiae; fructooligosaccharides; brewers yeast; prebiotics; in vitro studies; gel electrophoresis
Abstract:
... This study examined the effects of brewers yeast, fructooligosaccharide (FOS), and GroBiotic®-A, a mixture of partially autolyzed brewers yeast, dairy components and dried fermentation products, on the intestinal microbial community of red drum, Sciaenops ocellatus. Gastrointestinal (GI) tracts were aseptically removed from three sub-adult red drum previously maintained on a commercial diet and pl ...
Handle:
10113/16367
DOI:
10.1080/03601230701771438
PubMed:
18368546

5. Activation and functionalization of benzylic derivatives by palladium catalysts

Author:
Benoît Liégault; Jean-Luc Renaud; Christian Bruneau
Source:
Chemical Society reviews 2008 v.37 no.2 pp. 290-299
ISSN:
1460-4744
Subject:
acetates; carbonates; catalysts; catalytic activity; halides; organic halogen compounds; palladium; phosphonates
Abstract:
... Palladium-catalyzed transformations of aryl halides and pseudo-halides involving carbonylation, carbon–carbon and carbon–heteroatom bond-forming reactions, etc. are very well documented, and have already been reviewed several times. The metal-catalyzed activation of benzylic derivatives is much less described. However, during the last decades, a number of papers have shown the interest offered by ...
DOI:
10.1039/b704255h

6. Altered expression of the chloroplast ATP synthase through site-directed mutagenesis in Chlamydomonas reinhardtii

Author:
Johnson, Eric A.
Source:
Photosynthesis research 2008 v.96 no.2 pp. 153-162
ISSN:
0166-8595
Subject:
Chlamydomonas reinhardtii; H-transporting ATP synthase; acetates; adenosine triphosphate; amino acids; genes; hydrolysis; mutants; peptides; photoinhibition; physiological response; protons; site-directed mutagenesis; thylakoids
Abstract:
... The chloroplast ATP synthase gates the flow of protons out of the thylakoid lumen. In Chlamydomonas reinhardtii deletion of any of the genes for the ATP synthase subunits, or misfolding of the peptides results in photosynthetic membranes devoid of the enzyme (Lemaire and Wollman, J Biol Chem 264:675-685, 1989). This work examines the physiologic response of an algal strain in which the epsilon sub ...
DOI:
10.1007/s11120-008-9296-z
PubMed:
18365763

7. An electricity-generating prosthecate bacterium strain Mfc52 isolated from a microbial fuel cell

Author:
Kodama, Yumiko; Watanabe, Kazuya
Source:
FEMS microbiology letters 2008 v.288 no.1 pp. 55-61
ISSN:
0378-1097
Subject:
acetates; alpha-Proteobacteria; appendages; bacteria; biofilm; cellulose; electricity; electrodes; glucose; graphene; metabolites; microbial fuel cells; organic acids and salts; phylogeny
Abstract:
... Rod-shaped Alphaproteobacteria possessing long prosthecae-like appendages have been detected abundantly in biofilms attaching onto anode graphite of cellulose-fed microbial fuel cells (MFCs). To identify their ecological roles, the present study isolated a corresponding bacterium (strain Mfc52) by direct plating of a biofilm suspension onto a solid medium containing glucose and ferric ion. Phyloge ...
DOI:
10.1111/j.1574-6968.2008.01326.x
PubMed:
18793200

8. An integrated biodesulfurization process, including inoculum preparation, desulfurization and sulfate removal in a single step, for removing sulfur from oils

Author:
Tangaromsuk, Jantana; Borole, Abhijeet P.; Kruatrachue, Maleeya; Pokethitiyook, Prayad
Source:
Journal of chemical technology and biotechnology 2008 v.83 no.10 pp. 1375-1380
ISSN:
0268-2575
Subject:
Rhodococcus erythropolis; absorbance; acetates; biocatalysts; bioprocessing; enzymes; fermentation; microbial growth; oils; sulfur
Abstract:
... BACKGROUND: A single-stage reactor, in which the growth of bacterial culture, induction of desulfurizing enzymes, and desulfurization reaction are carried out in a single step, was adopted to investigate desulfurization of dibenzothiophene (DBT) at high cell densities. Rhodococcus erythropolis, IGTS8 was used as the biocatalyst. Optimal conditions for bacterial growth and DBT desulfurization were ...
DOI:
10.1002/jctb.1949

9. Antifouling activity of sessile bacilli derived from marine surfaces

Author:
Ortega-Morales, Benjamín Otto; Chan-Bacab, Manuel Jesús; Miranda-Tello, Elizabeth; Fardeau, Marie-Laure; Carrero, Julio César; Stein, Torsten
Source:
Journal of industrial microbiology & biotechnology 2008 v.35 no.1 pp. 9-15
ISSN:
1367-5435
Subject:
Artemia salina; Bacillus firmus; Bacillus mojavensis; Halomonas marina; acetates; antifouling agents; antimicrobial properties; bacteria; biofilm; culture media; desorption; ethanol; industry; mass spectrometry; microbial biomass; ribosomal DNA; surfactin
Abstract:
... Marine biofilms are a virtually untapped source of bioactive molecules that may find application as novel antifoulants in the marine paint industry. This study aimed at determining the potential of marine biofilm bacteria to produce novel biomolecules with potential application as natural antifoulants. Nine representative strains were isolated from a range of surfaces and were grown in YEB medium ...
DOI:
10.1007/s10295-007-0260-2
PubMed:
17909869

10. Antimicrobial, antioxidant, and antiviral activities of Retama raetam (Forssk.) Webb flowers growing in Tunisia

Author:
Edziri Hayet; Mastouri Maha; Ammar Samia; Matieu Mata; Patrich Gros; Hiar Raida; Mahjoub Mohamed Ali; Ali Si Mohamed; Laurent Gutmann; Zine Mighri; Aouni Mahjoub
Source:
World journal of microbiology & biotechnology 2008 v.24 no.12 pp. 2933-2940
ISSN:
0959-3993
Subject:
polyphenols; foods; acetates; cytopathogenicity; flavonoids; chloroform; inhibitory concentration 50; biopreservatives; Retama raetam; ammonium thiocyanate; viruses; ingredients; butanol; Human betaherpesvirus 5; antifungal properties; Gram-negative bacteria; amoxicillin; oxacillin; tannins; antioxidant activity; pharmaceutical industry; antibacterial properties; ticarcillin; antiviral properties; methanol; flowers; Tunisia
Abstract:
... Antimicrobial, antioxidant, and antiviral activities of flower extracts of Retama raetam Forssk. Webb (Fabaceae) were screened both from standard and isolated Gram-positive and Gram-negative bacteria by solid medium technique. Oxacillin, Amoxicillin, Ticarcillin, Cefotaxim, and Amphotericin were used as the control agents. The antiviral activity was evaluated against human cytomegalovirus (HCMV) s ...
DOI:
10.1007/s11274-008-9835-y

11. Antioxidant Activity and Chemical Characterization of Essential Oil of Bunium persicum

Author:
Shahsavari, Neda; Barzegar, Mohsen; Sahari, Mohammad Ali; Naghdibadi, Hasanali
Source:
Plant foods for human nutrition 2008 v.63 no.4 pp. 183-188
ISSN:
0921-9668
Subject:
Bunium persicum; acetates; antioxidant activity; antioxidants; beta-carotene; bleaching; butylated hydroxyanisole; butylated hydroxytoluene; chemical composition; essential oils; food additives; gamma-terpinene; gas chromatography-mass spectrometry; medicinal plants; monitoring; oilseeds; oxidation; screening; soybean oil; temperature; thiobarbituric acid-reactive substances; Iran
Abstract:
... The search for natural antioxidants, especially of plant origin, has notably increased in recent years. Bunium persicum Boiss. is an economically important medicinal plant growing wild in the dry temperature regions in Iran. In this study, chemical constituents of the essential oil of the seed from Bunium persicum Boiss. have been studied by GC/MS technique. The major components were caryophyllene ...
DOI:
10.1007/s11130-008-0091-y
PubMed:
18810640

12. Antioxidant activities of ethanolic extracts from the twigs of Cinnamomum osmophloeum

Author:
Chua, Meng-Thong; Tung, Yu-Tang; Chang, Shang-Tzen
Source:
Bioresource technology 2008 v.99 no.6 pp. 1918-1925
ISSN:
0960-8524
Subject:
Cinnamomum; acetates; antioxidant activity; antioxidants; brain; chelates; indigenous species; lipid peroxidation; metals; mice; Taiwan
Abstract:
... Cinnamomum osmophloeum Kaneh. is an indigenous tree species in Taiwan. In this study, phytochemical characteristics and antioxidant activities of ethanolic extracts from the twigs of C. osmophloeum were investigated for the first time. The extracts were obtained successively using liquid-liquid partition to yield n-hexane (Hex), ethyl acetate (EtOAc), n-butanol (BuOH) and water fractions. The anti ...
DOI:
10.1016/j.biortech.2007.03.020
PubMed:
17478090

13. Antioxidant activity of the phenol rich fractions of leaves of Chukrasia tabularis A. Juss

Author:
Kaur, Rajbir; Arora, Saroj; Singh, Bikram
Source:
Bioresource technology 2008 v.99 no.16 pp. 7692-7698
ISSN:
0960-8524
Subject:
DNA; acetates; antioxidant activity; chloroform; free radical scavengers; leaf extracts; leaves; methanol; phenol
Abstract:
... The present study was designed to explore the antioxidant potential of chloroform, ethyl acetate, n-butanol and water fractions of 80% methanol extract of leaves Chukrasia tabularis by 2,2'-diphenyl-1-picrylhydrazyl (DPPH), deoxyribose degradation (non-site specific and site specific), reducing power and DNA nicking assays. The different fractions showed significant activities in all the free radi ...
DOI:
10.1016/j.biortech.2008.01.070
PubMed:
18353635

14. Antioxidant properties of methanol extract and its solvent fractions obtained from selected Indian red seaweeds

Author:
Ganesan, P.; Kumar, Chandini S.; Bhaskar, N.
Source:
Bioresource technology 2008 v.99 no.8 pp. 2717-2723
ISSN:
0960-8524
Subject:
Acanthophora; Gracilaria; Kappaphycus; acetates; antioxidant activity; ascorbic acid; butanol; ethers; free radical scavengers; gallic acid; hydroxyl radicals; macroalgae; methanol; methylene chloride; petroleum; phenol
Abstract:
... In vitro antioxidant activities of three selected Indian red seaweeds - viz., Euchema kappaphycus, Gracilaria edulis and Acanthophora spicifera were evaluated. Total phenolic content and reducing power of crude methanol extract were determined. The antioxidant activities of total methanol extract and five different solvent fractions (viz., petroleum ether (PE), ethyl acetate (EA), dichloromethane ...
DOI:
10.1016/j.biortech.2007.07.005
PubMed:
17706415

15. Aroma-active compounds of Elsholtzia splendens using AEDA and HS-SPME-GC-O dilution analysis

Author:
Choi, Hyang S.; Min, Kyung C.
Source:
Flavour and fragrance journal 2008 v.23 no.1 pp. 58-64
ISSN:
0882-5734
Subject:
Elsholtzia splendens; acetates; alpha-pinene; aromatic compounds; carvone; essential oils; flavor; gas chromatography-mass spectrometry; geraniol; headspace analysis; nerol; odors; oils; sensory evaluation; solid phase microextraction
Abstract:
... This study was conducted to determine the composition of essential oil and headspace from Elsholtzia splendens, and to determine the aroma-active compounds of this aromatic plant. Eighty-five components were identified in the oil by GC and GC-MS. The major compounds were naginata ketone (70.43%) and elsholtzia ketone (4.95%). Sixty-eight volatile flavour constituents were detected in the headspace ...
DOI:
10.1002/ffj.1856

16. Behavioural responses of wheat stem sawflies to wheat volatiles

Author:
Piesik, D.; Weaver, D.K.; Runyon, J.B.; Buteler, M.; Peck, G.E.; Morrill, W.L.
Source:
Agricultural and forest entomology 2008 v.10 no.3 pp. 245-253
ISSN:
1461-9555
Subject:
Cephus cinctus; acetates; adults; air; air flow; beta-ocimene; bioassays; females; grasses; males; oviposition; pest management; sawflies; stems; volatile compounds; wheat
Abstract:
... 1 Adult wheat stem sawflies Cephus cinctus, pests of cultivated cereals that also infests wild grasses, migrate into wheat fields where they oviposit in elongating, succulent stems. 2 Volatiles released by wheat plants at susceptible stages were analyzed to determine potential semiochemical compounds. Seven major compounds were identified and quantified. 3 A Y-tube bioassay was developed to evalua ...
DOI:
10.1111/j.1461-9563.2008.00380.x

17. Biodegradation of high phenol containing synthetic wastewater by an aerobic fixed bed reactor

Author:
Bajaj, M.; Gallert, C.; Winter, J.
Source:
Bioresource technology 2008 v.99 no.17 pp. 8376-8381
ISSN:
0960-8524
Subject:
acetates; biodegradation; biofilm; chemical oxygen demand; clay; fatty acids; feeds; microorganisms; organic nitrogen compounds; phenol; temperature; urea nitrogen; wastewater
Abstract:
... The continuous aerobic degradation of phenol, mixed with readily degradable synthetic wastewater was studied over a period of 400 days at 25±5°C temperature in a fixed bed biofilm reactor using 'Liapor' clay beads as packing material. The phenol concentration added to the reactor ranged from 0.19 to 5.17g/l and was achieved by a gradual increase of phenol in wastewater, thus adapting the microbial ...
DOI:
10.1016/j.biortech.2008.02.057
PubMed:
18440804

18. Bioenergetic models for acetate and phosphate transport in bacteria important in enhanced biological phosphorus removal

Author:
Burow, Luke C.; Mabbett, Amanda N.; McEwan, Alastair G.; Bond, Philip L.; Blackall, Linda L.
Source:
Environmental microbiology 2008 v.10 no.1 pp. 87-98
ISSN:
1462-2912
Subject:
acetates; adenosinetriphosphatase; bacteria; cell membranes; cyanides; decarboxylation; extrusion; ions; membrane potential; microbial communities; models; monensin; phosphates; phosphorus; protons; respiratory system; sodium; valinomycin
Abstract:
... Most of our understanding of the physiology of microorganisms is the result of investigations in pure culture. However, in order to understand complex environmental processes, there is a need to investigate mixed microbial communities. This is true for enhanced biological phosphorus removal (EBPR), an environmental process that results in the enrichment of the polyphosphate-accumulating organism A ...
DOI:
10.1111/j.1462-2920.2007.01432.x
PubMed:
18211269

19. Biofilm formation and interactions of bacterial strains found in wastewater treatment systems

Author:
Andersson, Sofia; Kuttuva Rajarao, Gunaratna; Land, Carl Johan; Dalhammar, Gunnel
Source:
FEMS microbiology letters 2008 v.283 no.1 pp. 83-90
ISSN:
0378-1097
Subject:
Acinetobacter calcoaceticus; Comamonas denitrificans; Pseudomonas aeruginosa; acetates; amyloid; bacteria; biofilm; coculture; culture media; gentian violet; glucose; hydrophobicity; mixed culture; synergism; wastewater; wastewater treatment
Abstract:
... Biofilm formation and adherence properties of 13 bacterial strains commonly found in wastewater treatment systems were studied in pure and mixed cultures using a crystal violet microtiter plate assay. Four different culture media were used, wastewater, acetate medium, glucose medium and diluted nutrient broth. The medium composition strongly affected biofilm formation. All strains were able to for ...
DOI:
10.1111/j.1574-6968.2008.01149.x
PubMed:
18422628

20. Biofiltration of ethyl acetate and amyl acetate using a composite bead biofilter

Author:
Chan, Wu-Chung; Su, Mei-Qi
Source:
Bioresource technology 2008 v.99 no.17 pp. 8016-8021
ISSN:
0960-8524
Subject:
acetates; biodegradation; biofilters; biofiltration; microbial growth
Abstract:
... Biodegradation kinetic behaviors of ethyl acetate and amyl acetate in a composite bead biofilter were investigated. The composite bead was the spherical PVA/peat/KNO₃/GAC composite bead which was prepared in our previous works. Both microbial growth rate and biochemical reaction rate were inhibited at higher inlet concentration. For the microbial growth process, the microbial growth rate of ethyl ...
DOI:
10.1016/j.biortech.2008.03.045
PubMed:
18445522