By Kumar Sudesh
The environmental difficulties attributable to petroleum-based plastic and plastic waste have resulted in an expanding call for for biobased and biodegradable plastics, corresponding to polyhydroxyalkanoates (PHAs). those polyesters are synthesized from carbon resources, e.g. sugar and plant oils, via quite a few micro organism. This publication highlights the opportunity of plant oils, specifically palm oil, as a feedstock for PHA construction. moreover, new PHA functions are mentioned and the sustainability of PHA creation from plant oils is severely examined.
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Additional resources for Polyhydroxyalkanoates from Palm Oil: Biodegradable Plastics
Sample text
4 million tonnes in 2009 (MPOB 2009). 42 3 Plant Oils and Agricultural By-Products as Carbon Feedstock for PHA Production Palm oil is obtained from the fruit of a palm tree, Elaeis guineensis, native to tropical West Africa and cultivated in Africa, Indonesia, Malaysia, and tropical America. The palm fruit grows in large bunches weighing approximately 10–20 kg which could be made up of 1,000–2,000 individual fruitlet, consisting of a fleshy mesocarp outer later and hard whitish kernel. Being a perennial tree, this crop bears fruit throughout the year.
80/kg, respectively (Akiyama et al. 2003). It should be noted that antibiotic was used to maintain the plasmid containing PHA synthase of A. caviae. In an attempt to eliminate antibiotic usage, studies were carried out to integrate the PHA synthase into the chromosome of the host (Mifune et al. 2008). To date, results on PHA production using plant oils and agricultural by-products seems to be promising as positive findings are constantly being reported by researchers around the globe. The only factor that may affect the potential usage of plant oils is its price.
Therefore, the simplest approach 2 Bio-Based and Biodegradable Polymers 26 System A Examples Sugars, Plant oils Bacteria Fermentation PHA R. 7 Strategies for the production of PHAs using different renewable resources as the starting material is to choose the cheapest and most readily available carbon substrates (preferably bio-based) that could support the microbial growth efficiently. Sugars (Borah et al. 2002), plant oils (Loo et al. 2005), and several agricultural by-products such as beet molasses (Omar et al.