Natural poly -3 -hydroxybutanoic acid

Poly-(3-hydroxybutanoic acid) (PHB), belongs to the large family of poly-(hydroxyalkanoates) (PHAs), high molecular weight natural polymers produced by various microorganisms and stored in cell cytoplasm (200). Low molecular weight PHB, also present in bacteria and are primarily involved in transport of ions and DNA across inner bacterial membrane (201). PHB could be developed as a valuable biocompatible material with possible applications in gene delivery after cytotoxic, safety, and efficacy evaluations. 

Biodegradation of the Blends of Atactic Poly[(R,S)>3> hydroxybutanoic Acid] in Natural Environments... 

The results of the present study revealed that natural poly(3-hydroxyalkanoate)s and their blends with synthetic atactic poly [(R,S)-3-hydroxybutanoic acid] degrade in natural environment, and the rate of biodegradation process depends on their composition, the nature of environment and the specific microorganisms. 

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