Download Plastics from Bacteria: Natural Functions and Applications by Guo-Qiang Chen (auth.), George Guo-Qiang Chen (eds.) PDF
By Guo-Qiang Chen (auth.), George Guo-Qiang Chen (eds.)
Due to the prospect that petroleum offers should be exhausted within the subsequent many years to come back, an increasing number of cognizance has been paid to the creation of bacterial pl- tics together with polyhydroxyalkanoates (PHA), polylactic acid (PLA), poly(butylene succinate) (PBS), biopolyethylene (PE), poly(trimethylene terephthalate) (PTT), and poly(p-phenylene) (PPP). those are well-studied polymers containing at the very least one monomer synthesized through bacterial transformation. between them, PHA, PLA and PBS are renowned for his or her biodegradability, while PE, PTT and PPP are most likely much less biodegradable or are much less studied by way of their biodegradability. over the last years, their homes and appli- tions were studied intimately and items were constructed. actual and chemical alterations to lessen their price or to enhance their houses were carried out. PHA is the single biopolyester relations thoroughly synthesized by means of organic ability. they've been investigated through microbiologists, molecular biologists, b- chemists, chemical engineers, chemists, polymer specialists, and clinical researchers for a few years. PHA purposes as bioplastics, high quality chemical compounds, implant biomate- als, medications, and biofuels were constructed. businesses were est- lished for or interested by PHA comparable R&D in addition to huge scale creation. It has develop into transparent that PHA and its similar applied sciences shape an commercial price chain in fermentation, fabrics, feeds, and effort to clinical fields.
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Extra info for Plastics from Bacteria: Natural Functions and Applications
Example text
Moreover, 3HBME was observed to Plastics Completely Synthesized by Bacteria: Polyhydroxyalkanoates 33 enhance gap junctional intercellular communication between neurons. Thus, 3HB and its derivatives enhance learning and memory, possibly through a signaling pathway requiring PUMA-G that increases protein synthesis and gap junctional intercellular communication (Zou et al. 2009). 5 Conclusion and Future Perspectives The development of PHA into a branch of bulk chemical industry will address at least three issues: shortage of petroleum for plastic materials, reduction of CO2 emissions, and environmental protection.
These differences translate into materials that extend the property space of biologically synthesized scl PHA. Wu et al (2008) succeeded in producing PHB–poly(d,l-lactide) (PLA)–poly (e-caprolactone) triblock copolymers using a low molecular weight methyl-PHB oligomer precursor as the macroinitiator through ring-opening polymerization with d,l-lactide and e-caprolactone. The triblock copolymers exhibited flexible properties with good biocompatibility. 3 Eukaryotic PHA PHB has been found to be a ubiquitous component of the cellular membranes of plants and animals (Reusch et al.
Chem Soc Rev. 38:2434–2446 Chen GQ (2009b) Industrial production of PHA. Microbiol Monogr . 1007/978-3-64203287-5_6 Chen GQ, Zhang G, Park SJ, Lee SJ (2001) Industrial production of poly(hydroxybutyrate-cohydroxyhexanoate). Appl Microbiol Biotechnol 57:50–55 Chen JY, Liu T, Zheng Z, Chen JC, Chen GQ (2004) Polyhydroxyalkanoate synthases PhaC1 and PhaC2 from Pseudomonas stutzeri 1317 had different substrate specificities. FEMS Microbiol Lett 234:231–237 Chen GQ and Wu Q (2005) Polyhydroxyalkanoates as tissue engineering materials.