Due to biocompatibility and
biodegradability of biologically-produced PHA for possible uses as
plastics with promising physical and chemical characteristics (e.g.,
can be changed by blending and/or modifying the surface), PHAs
could be applicable to be biodegradable polymers for green technology
of sustainable development [2].
As a matter of fact, several
naturally-occurring microbes were reported to have capabilities
of PHA biosynthesis (e.g., Azotobacter vinelandii [3], Pseudomonas
sp. [4] and Aeromonas sp. [5]).
The reason
why these PHA-generating bacteria could own such promising
capabilities of producing PHA and associated monomers was due
to induced expression of their DNA sequences for PHA synthesis
(e.g., PhaA, PhaB, PhaC; [8]).
In
particular, several PHA-producing microbes evolved in contaminated
environments could simultaneously degrade pollutants and
synthesize PHAs, since the metabolism of PHA synthesis could
be expressed in hostile environments.
Due to this, this study
tended to explore optimal operation strategy of PHA production
using indigenous dye-decolorizing bacterium A. hydrophila NIU01
[10] for wastewater treatment and materials recycling and reuses
afterwards. Recently, prior study [11] also showed the promising
capability of PHA synthesis for A. hydrophila in the presence of
decolorized intermediate(s) for wastewater decolorization.