From oil to bioplastics, a dream come true?
نویسنده
چکیده
Human overpopulation combined with the current lifestyle urges the rational, efficient and sustainable use of natural resources to produce environmentally friendly plastic materials such as polyhydroxyalkanoic acids (PHA), whose production/degradation cycle reduces undesirable wastes and emissions. In this issue Sabirova et al. (15) presents results of paramount importance: a PHA hyper-producer mutant of the oildegrading marine bacterium Alcanivorax borkumensis SK2 that deposits the PHA in the extracellular environment by a still unknown mechanism (Figure 1). This phenotype is only observed when grown on aliphatic hydrocarbons, one of the main components of petroleum. Occurrence of PHA in bacteria has been known since 1926 when Lemoigne observed that Bacillus megaterium produced an intracellular polymer of hydroxybutyrate monomers, later called polyhydroxybutyrate (PHB), which is the most widely produced PHA by bacteria (6). Six decades later, other related biopolyesters with longer side chains (medium chain length PHA or mcl-PHAs) were also described. Their production was first reported in Pseudomonas putida GPo1 (formerly known as Pseudomonas oleovorans GPo1) growing on alkanes (e. g., n-octane) (3). Since then, PHA has been AC CE TE D Copyright © 2006, American Society for Microbiology and/or the Listed Authors/Institutions. All Rights Reserved. J. Bacteriol. doi:10.1128/JB.01576-06 JB Accepts, published online ahead of print on 3 November 2006
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ورودعنوان ژورنال:
- Journal of bacteriology
دوره 189 2 شماره
صفحات -
تاریخ انتشار 2007