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Wyszukujesz frazę "1,3-propanediol" wg kryterium: Wszystkie pola

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    Wyświetlanie 1-7 z 7
    Tytuł:
    Biotechnological production of 1,3-propanediol from crude glycerol
    Autorzy:
    Drozdzynska, A.
    Leja, K.
    Czaczyk, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/81121.pdf
    Data publikacji:
    2011
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    1,3-propanediol
    bioconversion
    biotechnological production
    chemical industry
    crude oil
    glycerol
    Klebsiella pneumoniae
    metabolic pathway
    microorganism
    natural fat
    waste biomass
    Źródło:
    BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2011, 92, 1
    0860-7796
    Pojawia się w:
    BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Screening of environmental samples for bacteria producing 1,3-propanediol from glycerol
    Autorzy:
    Dąbrowski, Sławomir
    Zabłotna, Ewa
    Pietrewicz-Kubicz, Dorota
    Długołęcka, Anna
    Powiązania:
    https://bibliotekanauki.pl/articles/1039709.pdf
    Data publikacji:
    2012
    Wydawca:
    Polskie Towarzystwo Biochemiczne
    Tematy:
    anaerobic fermentation
    Clostridium
    screening
    biodiesel
    glycerol
    1,3-propanediol
    Opis:
    Twenty nine environmental samples were screened for the presence of anaerobic microorganisms fermenting glycerol with 1,3-propanediol as a final product. Seven samples were then selected for the next step of our research and eight bacteria strains were cultured anaerobically. Seven of them produced 1,3-propanediol with a yield of 0.47-0.58. Six of the the isolated microorganisms were then classified as Clostridium butyricum (four strains), C. lituseburense (one strain), and C. sartagoforme (one strain). We suggest that of all these strains C. butyricum 2CR371.5 is the best 1,3-propanediol producer as producing no lactate as a by-product and growing well on a glycerol-containing medium.
    Źródło:
    Acta Biochimica Polonica; 2012, 59, 3; 353-356
    0001-527X
    Pojawia się w:
    Acta Biochimica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Separation of 1,3-Propanediol from Aqueous Solutions by Ion Exchange Chromatography
    Autorzy:
    Rukowicz, B.
    Miesiąc, I.
    Alejski, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/778477.pdf
    Data publikacji:
    2014
    Wydawca:
    Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
    Tematy:
    1,3-propanediol
    glycerol
    fermentation
    sorption
    ion-exchange chromatography
    Opis:
    1,3-propanediol is a promising monomer with many applications and can be produced by bioconversion of renewable resources. The separation of this product from fermentation broth is a difficult task. In this work, the application of cation exchange resin for the separation of 1,3-propanediol from model aqueous solution was examined. The best effect of separation of 1,3-propanediol from glycerol using sorption method was obtained for H+ resin form, although the observed partition coefficient of 1,3-propanediol was low. On the basis of the results of the sorption of 1,3-propanediol, the ionic forms of the resin were selected and used in the next experiments (H+, Ca2+, Ag+, Na+, Pb2+, Zn2+). The best results in ion exchange chromatography were obtained for cation exchange resin in H+ and Ca2+ form. The use of smaller particle size of resin and a longer length of the column allows to obtain better separation of mixtures.
    Źródło:
    Polish Journal of Chemical Technology; 2014, 16, 2; 82-86
    1509-8117
    1899-4741
    Pojawia się w:
    Polish Journal of Chemical Technology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Biotechnological conversion of glycerol from biofuels to 1,3-propanediol using Escherichia coli
    Autorzy:
    Przystałowska, Hanna
    Lipiński, Daniel
    Słomski, Ryszard
    Powiązania:
    https://bibliotekanauki.pl/articles/1039124.pdf
    Data publikacji:
    2015
    Wydawca:
    Polskie Towarzystwo Biochemiczne
    Tematy:
    bioconversion
    biodiesel
    carbon source
    Escherichia coli
    glycerol
    1,3-propanediol
    Opis:
    In the face of shortage of fossil fuel supplies and climate warming triggered by excessive carbon dioxide emission, alternative resources for chemical industry have gained considerable attention. Renewable resources and their derivatives are of particular interest. Glycerol, which constitutes one of the by-products during biodiesel production, is such a substrate. Thus, generated excess glycerol may become an environmental problem, since it cannot be disposed of in the environment. The most promising products obtained from glycerol are polyols, including 1,3-propanediol, an important substrate in the production of synthetic materials, e.g. polyurethanes, unsaturated polyesters, and epoxy resins. Glycerol can be used as a carbon and energy source for microbial growth in industrial microbiology to produce 1,3-propanediol. This paper is a review of metabolic pathways of native producers and E. coli with the acquired ability to produce the diol via genetic manipulations. Culture conditions during 1,3-PDO production and genetic modifications of E. coli used in order to increase efficiency of glycerol bioconversion are also described in this paper.
    Źródło:
    Acta Biochimica Polonica; 2015, 62, 1; 23-34
    0001-527X
    Pojawia się w:
    Acta Biochimica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Zatężanie roztworów 1,3-propanodiolu metodą destylacji membranowej
    Concentration of 1,3-propanediol solutions by membrane distillation
    Autorzy:
    Gryta, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/2072388.pdf
    Data publikacji:
    2013
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    destylacja membranowa
    1,3-propanodiol
    glicerol
    zatężanie roztworów
    membrane distillation
    1,3-propanediol
    glycerol
    solution concentration
    Opis:
    Proces destylacji membranowej wykorzystano do zatężania roztworów 1,3-propanodiolu, uzyskując ponad 99,6% zatrzymanie alkoholu w koncentracie. W procesie zastosowano kapilarne membrany Accurel PP. Przeprowadzone długoterminowe badania zatężania (ponad 600 h) wykazały dobrą odporność użytych membran polipropylenowych na zwilżanie.
    Membrane distillation process was utilized for the concentration of 1,3-propanediol solutions resulting in the retention of alcohol in retentate by more than 99.6%. Long-term studies of the concentration carried out for over 600 h had demonstrated a good resistance to wettability of used polypropy¬lene Accurel PP membranes.
    Źródło:
    Inżynieria i Aparatura Chemiczna; 2013, 5; 421--422
    0368-0827
    Pojawia się w:
    Inżynieria i Aparatura Chemiczna
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Influence of reduction time of copper based catalysts: Cu/Al2O3 and CuCr2O4 on hydrogenolysis of glycerol
    Autorzy:
    Wołosiak-Hnat, A.
    Milchert, E.
    Lewandowski, G.
    Grzmil, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/779823.pdf
    Data publikacji:
    2011
    Wydawca:
    Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
    Tematy:
    hydrogenoliza
    1,3-propanodiol
    glicerol
    hydrogenolysis
    1,2-propanediol
    1,3-propanediol
    glycerol
    Opis:
    High activity of copper based catalysts for C-O bond hydro-dehydrogenation and their poor activity for C-C bond cleavage1 have prompted an attempt to apply such catalysts in the hydrogenolysis of glycerol to 1,2- and 1,3-propanediol. In the present study the infl uence of hydrogen reduction time of the Cu/ Al2O3 and CuCr2O4 copper catalysts on glycerol conversion and selectivity of transformation to propanediols and by-products was studied. At fi rst a general comparison was made between the commercial catalysts and those prepared by the co-precipitation method. As better results were obtained in the presence of catalysts prepared by co-precipitation, they were selected for further detailed studies of the influence of reduction time. For both prepared catalysts Cu/Al2O3 and CuCr2O4 the reduction time of 8 h was optimal. In the presence of Cu/Al2O3 catalyst the conversion of glycerol was 59.0%, selectivity of transformation to 1,2-propanediol 77.4% and selectivity to 1,3-propanediol 1.9%. In the presence of CuCr2O4 the glycerol conversion was 30.3% and selectivity to 1,2-propanediol 67.3%.
    Źródło:
    Polish Journal of Chemical Technology; 2011, 13, 4; 71-76
    1509-8117
    1899-4741
    Pojawia się w:
    Polish Journal of Chemical Technology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    1,3-propanediol production by Escherichia coli expressing genes of dha operon from Clostridium butyricum 2CR371.5
    Autorzy:
    Dąbrowski, Sławomir
    Pietrewicz-Kubicz, Dorota
    Zabłotna, Ewa
    Długołęcka, Anna
    Powiązania:
    https://bibliotekanauki.pl/articles/1039710.pdf
    Data publikacji:
    2012
    Wydawca:
    Polskie Towarzystwo Biochemiczne
    Tematy:
    anaerobic fermentation
    Clostridium butyricum
    Escherichia coli
    biodiesel
    dha operon
    glycerol
    1,3-propanediol
    Opis:
    1,3-propanediol is used as a monomer in the production of some polymers e.g. polytrimethylene terephthalate used in the production of carpets and textile fibers and in the thermoplastics engineering. However, the traditional chemical synthesis is expensive, generates some toxic intermediates and requires a reduction step under high hydrogen pressure. Biological production of 1,3-propanediol could be an attractive alternative to the traditional chemical methods. Moreover, crude glycerol which is a by-product of biodiesel production, can be used. We constructed a recombinant Escherichia coli strain producing 1,3-propanediol from glycerol by introducing genes of the dha operon from Clostridium butyricum 2CR371.5, a strain from our collection of environmental samples and strains. The E. coli strain produced 3.7 g of 1,3-propanediol per one litre of culture with the yield of 0.3 g per 1 g of glycerol consumed.
    Źródło:
    Acta Biochimica Polonica; 2012, 59, 3; 357-361
    0001-527X
    Pojawia się w:
    Acta Biochimica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-7 z 7

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