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New Findings on Biotechnology from B. Laycock and Co-Authors Summarized (Crystallisation and fractionation of selected polyhydroxyalkanoates produced...

July 30, 2014



New Findings on Biotechnology from B. Laycock and Co-Authors Summarized (Crystallisation and fractionation of selected polyhydroxyalkanoates produced from mixed cultures)

By a News Reporter-Staff News Editor at Biotech Week -- Research findings on Technology are discussed in a new report. According to news originating from Lund, Sweden, by NewsRx correspondents, research stated, "Poly[R-3-hydroxybutyrate-co-(R-3-hydroxyvalerate)] (PHBV) copolymers were produced from mixed cultures of biomass (activated sludge) fed with acetic acid (HAc) and propionic acid (HPr). Feeding was performed in such a way as to produce materials with a wide range of monomer compositions and microstructures."

Our news journalists obtained a quote from the research, "Solvent-cast thin films of these materials have recently been shown to exhibit a narrow range of mechanical properties similar to those of the homopolymer poly(R-3-hydroxybutyrate) (PHB) [1]. In this work, more detailed analyses of the thermal and crystallisation properties of these mixed-culture polyesters have revealed that they like comprise complex blends with broad compositional distribution of random and/or blocky copolymers of very different 3-hydroxyvalerate (3HV) contents and melting temperatures and thus have very different respective crystallisation kinetics. This blend complexity was confirmed by solvent fractionation of selected samples. The findings support the hypothesis that overall mechanical properties of these complex copolymer blend materials will be strongly influenced by the more rapidly crystallising components that form the matrix within which the slower crystallising components exist as microdomains."

According to the news editors, the research concluded: "New opportunities in the material development of PHAs are likely to be found in establishing and exploiting such structure-function relationships."

For more information on this research see: Crystallisation and fractionation of selected polyhydroxyalkanoates produced from mixed cultures. New Biotechnology, 2014;31(4):345-356. New Biotechnology can be contacted at: Elsevier Science Bv, PO Box 211, 1000 Ae Amsterdam, Netherlands. (Elsevier - www.elsevier.com; New Biotechnology - www.elsevier.com/wps/product/cws_home/713354)

The news correspondents report that additional information may be obtained from B. Laycock, AnoxKaldnes AB, SE-22647 Lund, Sweden. Additional authors for this research include M.V. Arcos-Hernandez, A. Langford, S. Pratt, A. Werker, P.J. Halley and P.A. Lant (see also Technology).

Keywords for this news article include: Lund, Sweden, Europe, Technology

Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2014, NewsRx LLC


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Source: Biotech Week


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