By Kumar Sudesh
The environmental difficulties because of petroleum-based plastic and plastic waste have ended in an expanding call for for biobased and biodegradable plastics, similar to polyhydroxyalkanoates (PHAs). those polyesters are synthesized from carbon assets, e.g. sugar and plant oils, by way of a variety of micro organism. This publication highlights the potential for plant oils, particularly palm oil, as a feedstock for PHA construction. additionally, new PHA purposes are mentioned and the sustainability of PHA construction from plant oils is seriously examined.
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Extra resources for Polyhydroxyalkanoates from Palm Oil: Biodegradable Plastics
In addition, mixtures of nonanoic acid or octanoic acid with 6-bromoundecanoic acid and 8-bromo-octanoic acid have also been identified as potential precursors for the production of PHA containing monomer with halogenated functional group by P. oleovorans (Abe et al. 1990; Doi and Abe 1990; Kim et al. 1992; Kim et al. 1996). PHA containing sulfur atom could also be synthesized by feeding the polythioesters-accumulating bacteria such as C. necator with special mercap toalkanoic acid such as 3-mercaptopropionic acid, 3,3′-dithiodipropionic acid, and 3-mercaptobutyric acid (Lutke-Eversloh et al.
PHA accounted for about 10 % of the bioplastic market which is currently dominated by poly(lactic acid) and other starch-based biopolymers (Barker et al. 2009). 8 % of Malaysia’s total CPKO production) is required as carbon feedstock for microbial fermentation. 6 % of total oil palm planted area in Malaysia. 78. 45 million tonnes per annum (Shen et al. 2010). 5 Characteristics of Palm Oil Oil palm fruit is unique compared to other oil-producing crops as two different types of oils could be extracted from the mesocarp and kernel of the oil fruit, respectively (Fig.
Hence, these two metabolic processes may interfere with one another resulting in the reduction of PHA production. Therefore, nonspore-forming mutant strains of Bacillus are being evaluated for their PHA production ability. Genetic engineering is a useful tool to design strains that have better ability to produce PHA with tailored properties (Verlinden et al. 2007). Most wild-type PHA-producing bacteria have a relatively slow growth rate during fermentation. In addition, the cells are also usually hard to lyse, making PHA extraction and purification difficult.