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  • Articles  (1,707)
  • MDPI Publishing  (1,195)
  • Blackwell Publishing Ltd
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  • Articles  (1,707)
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  • 1
    Electronic Resource
    Electronic Resource
    Desulfurization of light gas oil in immobilized-cell systems of Gordona sp. CYKS1 and Nocardia sp. CYKS2 (2000)
    Oxford, UK : Blackwell Publishing Ltd
    FEMS microbiology letters 182 (2000), S. 0 
    Details
    ISSN: 1574-6968
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Desulfurizations of a model oil (hexadecane containing dibenzothiophene (DBT)) and a diesel oil by immobilized DBT-desulfurizing bacterial strains, Gordona sp. CYKS1 and Nocardia sp. CYKS2, were carried out. Celite bead was used as a biosupport for cell immobilization. Seven–eight cycles of repeated-batch desulfurization were conducted for each strain. Each batch reaction was carried out for 24 h. In the case of model oil treatment with strain CYKS1, about 4.0 mM of DBT in hexadecane (0.13 g sulfur loil−1) was desulfurized during the first batch, while 0.25 g sulfur loil−1 during the final eighth batch. The mean desulfurization rate increased from 0.24 for the first batch to 0.48 mg sulfur ldispersion−1 h−1 for the final batch. The sulfur content in the light gas oil was decreased from 3 to 2.1 g loil−1 by strain CYKS1 in the first batch. The mean desulfurization rate was 1.81 mg sulfur ldispersion−1 h−1, which decreased slightly when the batch reaction was repeated. No significant changes in desulfurization rate were observed with strain CYKS2 when the batch reaction was repeated. When the immobilized cells were stored at 4°C in 0.1 M phosphate buffer (pH 7.0) for 10 days, the residual desulfurization activity was about 50∼70% of the initial value.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1574-6968.2000.tb08913.x
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  • 2
    Electronic Resource
    Electronic Resource
    Isolation of Lysozyme from Hen Egg Albumen by Alcohol-Insoluble Cross-Linked Pea Pod Solid Ion-Exchange Chromatography (2001)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 66 (2001), S. 0 
    Details
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: : Albumen from hen eggs was diluted 3-fold with 0.05 M NaCl solution at pH 4.0 and was further treated with 30% ethanol for 8 h. The supernatant (77900 U/mg protein) thus obtained was further diluted (2.5-fold) with distilled water and its pH value was adjusted to 8.0 before being subjected to alcohol-insoluble cross-linked pea pod solid (AICLPPS) ion-exchange chromatography for lysozyme isolation. Results showed that AI-CLPPS ion-exchange chromatography increased the purification to 68-fold with a 72% lysozyme recovery from the starting albumen.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2621.2001.tb16086.x
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  • 3
    Electronic Resource
    Electronic Resource
    Characterization of Lactoferrin (LF) from Colostral Whey Using Anti-LF Antibody Immunoaffinity Chromatography (2002)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 67 (2002), S. 0 
    Details
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: : Lactoferrin (LF) in colostral whey was isolated by anti-LF immunoglobulin in yolk (IgY)-Sepharose 4B immunoaffinity chromatography, and parameters such as binding capacity (qm) and dissociation constant (Kd, × 10−6 M) of this immunoaffinity gel for LF were discussed. Purification folds for colostral whey I (from colostrum collected within 6 d of postpartum) and colostral whey II (from colostrum collected within 1 d of postpartum) by anti-LF IgY-immunoaffinity chromatography were 135.80 and 103.60, respectively. The recovery for LF in the same colostral whey sample by anti-LF IgY-immunoaffinity chromatography was 82 to 99 %. qm of anti-LF IgY-immunoaffinity gel for LF in colostral whey I and whey II were 0.372 and 0.272 mg LF/mL wet gel, respectively. Kd of anti-LF IgY-immunoaffinity gel for LF in colostral whey I was 1.594 × 10−6 M and II was 1.587 × 10−6 M.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2621.2002.tb09442.x
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  • 4
    Electronic Resource
    Electronic Resource
    De-esterification and Transacylation Reactions of Pectinesterase from Jelly Fig (Ficus awkeotsang Makino) Achenes (2001)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 66 (2001), S. 0 
    Details
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: : Pectinesterase (PE) was isolated from jelly fig (Ficus awkeotsang Makino) achenes, then the optimal conditions for de-esterification and transacylation reactions were determined. Molecular weight of pectin (DE = 62.8 %) when reacted with PE at pH 6.5 and 45 °C in 0.2 M NaCl for 20 min remarkably increased from the original 72 kDa to 410 kDa, as determined by Fractogel TSK 65(S) gel permeation chromatography. Prolonging the incubation time of pectin-PE mixtures to 2 and 4 h also increased the molecular weights of pectin. Therefore, transacylation reaction was considered to occur and to increase the molecular weight of pectins when de-esterification reaction was catalyzed by pectinesterase (PE).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2621.2001.tb15178.x
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  • 5
    Electronic Resource
    Electronic Resource
    TRIMETHYLAMINE-SPECIFIC ELECTRODE FOR FISH QUALITY CONTROL (1976)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 41 (1976), S. 0 
    Details
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Trimethylamine (TMA) is one of the major components of the smell of spoiled marine fish. An increased TMA level is so characteristic of spoilage that the TMA levels have been used as an objective index of fish quality. A specific electrode was developed in order to simplify the measurement of TMA. The Orion ammonia electrode was made specific for TMA by replacing the inner filling solution with 0.01M TMA · HCl in 0.04M KCl and by adding enough formaldehyde to the sample solution to obtain a concentration of 0.22% (0.075M). The electrode is suitable for the measurement of TMA in aqueous solutions and in homogenates of fish muscle. The use of this electrode is much simpler than the methods now used for TMA analysis and it may be applicable in commercial practice.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2621.1976.tb00711_41_3.x
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  • 6
    Electronic Resource
    Electronic Resource
    Identification of a locus involved in the utilization of iron by Actinobacillus pleuropneumoniae (1996)
    Oxford, UK : Blackwell Publishing Ltd
    FEMS microbiology letters 143 (1996), S. 0 
    Details
    ISSN: 1574-6968
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Abstract The cloned afu locus of Actinobacillus pleuropneumoniae restored the ability of an Escherichia coli K-12 mutant (aroB) to grow on iron-limited media. DNA sequence analysis of the fragment showed that there are three genes designated afuA, afuB and afuC (Actinobacillus ferric uptake) that encode products similar to the SfuABC proteins of Serratia marcescens, the HitABC proteins of Haemophilia influenzae, the FbpABC proteins of Neisseria gonorrhoeae and the YfuABC proteins of Yersinia enterocolitica. The three genes encode a periplasmic iron-binding protein (AfuA), a highly hydrophobic integral cytoplasmic membrane protein with two consensus permease motifs (AfuB) and one hydrophilic peripheral cytoplasmic membrane protein with Walker ATP-binding motifs (AfuC), respectively. This system has been shown to constitute a periplasmic binding protein-dependent iron transport system in these organisms. The afuABC operon is locating approximately 200 bp upstream of apxIC gene, but transcribed in opposite direction to the ApxI-toxin genes.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1574-6968.1996.tb08452.x
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  • 7
    Electronic Resource
    Electronic Resource
    Identification of a virulence-associated protein homolog gene and ISRa1 in a plasmid of Riemerella anatipestifer (1999)
    Oxford, UK : Blackwell Publishing Ltd
    FEMS microbiology letters 179 (1999), S. 0 
    Details
    ISSN: 1574-6968
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Riemerella anatipestifer is the causative agent of polyserositis of ducks and geese. We have previously reported that a 3.9-kb plasmid, pCFC1, carries protein genes (vapD1 and vapD2) that are similar to virulence-associated genes of other bacteria. In the present study, we report the complete sequence of a second plasmid of 5.6 kb, pCFC2. pCFC2 has a 28% G-C content and three large open reading frames (ORFs). One of the ORFs (designated asVapD1) encodes a polypeptide that shares 53.9, 53.9, 48.3, 48.3 and 46.1% identity with virulence-associated proteins of Dichelobacter nodosus, Actinobacillus actinomycetemcomitans, Neisseria gonorrhoeae, Helicobacter pylori and Haemophilus influenzae, respectively. The second ORF encodes a putative DNA replication protein (RepA3) with 309 amino acids and a molecular mass of approximately 36 kDa. A novel insertion sequence (IS) element, designated ISRa1, was found on the plasmid pCFC2. ISRa1 was flanked by 15-bp imperfect inverted repeats (only one mismatched nucleotide). ISRa1 contained an ORF encoding a putative transposase of 292 amino acids. Southern blot analysis indicated that in R. anatipestifer strains examined, ISRa1 was present with 2–20 copies (at least). ISRa1 displayed a sequence approximately 35% homologous to the putative IS982 and RSBst-α from Lactococcus lactis ssp. cremoris SK11 and Bacillus stearothermophilus CU21. Three hybridization patterns of genomic DNA of eight R. anatipestifer strains with an ISRa1 probe indicated that ISRa1 might be a useful tool for epidemiological studies.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1574-6968.1999.tb08701.x
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  • 8
    Electronic Resource
    Electronic Resource
    Sequence diversity of β-tubulin (tubA) gene in Phaeosphaeria nodorum and P. avenaria (2005)
    Oxford, UK : Blackwell Publishing Ltd
    FEMS microbiology letters 249 (2005), S. 0 
    Details
    ISSN: 1574-6968
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Full-length coding sequences of the β-tubulin gene (tubA) were PCR-amplified and sequenced from 42 Phaeosphaeria isolates, including 16 P. nodorum and 23 P. avenaria species from cereals, two Polish isolates from rye (Secale cereale L.), and one isolate from dallis grass (Paspalum dilatatum Poir). A tubA gene of size 1556 bp was identified in wheat- and barley-biotype P. nodorum (PN-w and PN-b), P. avenaria f. sp. avenaria (Paa), homothallic P. avenaria f. sp. triticea (Pat.) (Pat1) and the Pat. isolate (Pat3) from the State of Washington. The tubA gene length polymorphisms were detected in two Pat. isolates (Pat2) from foxtail barley (Hordeum jubatum L.), one from dallis grass and two Polish isolates from rye. These size differences were due to the variation of intron lengths among these three Phaeosphaeria species. All Phaeosphaeria isolates have identical 1344 bp exons that can be translated into a 447 amino acid β-tubulin. Like glyceraldehyde-3-phosphate dehydrogenase, the β-tubulin amino acid sequence was identical in all Phaeosphaeria species used in this study, with the exception of the two Pat2 isolates. Six amino acid differences were evident in the β-tubulin of these Pat2 isolates.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/j.femsle.2005.05.049
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  • 9
    Electronic Resource
    Electronic Resource
    Production of Poly(β-Hydroxybutyric Acid) by Recombinant Escherichia colia (1994)
    Oxford, UK : Blackwell Publishing Ltd
    Annals of the New York Academy of Sciences 721 (1994), S. 0 
    Details
    ISSN: 1749-6632
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Natural Sciences in General
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1749-6632.1994.tb47375.x
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  • 10
    Electronic Resource
    Electronic Resource
    Biogenic Amines in the Flesh of Sailfish (Istiophorus plafypferus) Responsible for Scornbroid Poisoning (1995)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 60 (1995), S. 0 
    Details
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Sailfish fillets were involved in a 1994 food poisoning outbreak in westem Taiwan. Samples were collected from the victims’residues and from retail and wholesale suppliers. They were analyzed for amines by a gradient elution system of HPLC. Tryptamine, histamine, spermine, trimethylamine, spermidine, and cadaverine were found; other amines were not detectable. The concentration of histamine was higher than 100 mg/100g which was assumed as the toxic level. The allergy-like symptoms of the victims along with the high content of histamine in the sailfish they had eaten were reasonable evidence that the food poisoning was directly associated with histamine intoxication.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2621.1995.tb06263.x
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