Polyhydroxyalkanoate (PHA) biosynthesis from directly valorized ragi husk and sesame oil cake by Bacillus megaterium strain Ti3: Statistical optimization and characterization

Polyhydroxyalkanoates (PHAs) signify the most promising biological substitute to petrochemical plastics. Renewable and inexpensive agro-industrial by-products can be used as potent fermentation feedstocks for sustainable PHA biosynthesis. This study aimed at using a wild type B. megaterium strain Ti...

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Bibliographic Details
Published in:International journal of biological macromolecules 2020-04, Vol.148, p.20-30
Main Authors: Israni, Neetu, Shivakumar, Srividya
Format: Article
Language:English
Subjects:
3-Hydroxybutyric Acid - analysis
Amylases - metabolism
B. megaterium
Bacillus megaterium - metabolism
Bacterial Proteins - metabolism
Cellulase - metabolism
Eleusine - chemistry
Fermentation
Lipase - metabolism
Optimization
Plastics
Polyhydroxyalkanoates
Polyhydroxyalkanoates - biosynthesis
Ragi husk
Sesame Oil - chemistry
Sesame oil cake
Sesamum - chemistry
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Summary:Polyhydroxyalkanoates (PHAs) signify the most promising biological substitute to petrochemical plastics. Renewable and inexpensive agro-industrial by-products can be used as potent fermentation feedstocks for sustainable PHA biosynthesis. This study aimed at using a wild type B. megaterium strain Ti3 innate hydrolytic enzyme/s for eco-friendly valorization of 16 lignocellulosic agrowastes to PHA without pretreatments. Initial hydrolytic screening PHA concentration of (0.04–0.17 g/L), highlighted the strain's metabolic versatility. Pareto ranking of Taguchi orthogonal array (TOA) established ragi husk (RH), sesame oil cake (SOC) and KH2PO4 as the most influential factors (p 
ISSN:0141-8130
1879-0003
DOI:10.1016/j.ijbiomac.2020.01.082