ABSTRACT
Green polymers are produced by a wide range of microbes and require specific nutrients and environmental parameters. Basically, these lipid polymers are storage materials that are accumulated in microbes in various forms of liquid granules or amorphous compounds that are mobile, allowing the cells to survive under stress. Biopolymers are environmentally friendly as they are produced from renewable resources or substrates from other industrial wastes. One of the most advanced inventions is the synthetic polymers/plastics, with approximately 20 different kinds being used worldwide. Polyhydroxyalkanoate (PHA) and polyhydroxybutyrate (PHB) are environmentally sustainable biopolymers that are efficiently biodegradable and so can help in replacing synthetic polymers with their applications in various fields. With respect to the dependence on synthetic polymers it has been drastically increased with their production and usage over the last few decades due to their durability, cost effectiveness, flexibility, and versatility.
