Rubber Seed Oil as a Novel Substrate for Polyhydroxyalkanoates Accumulation in Bacillus cereus

Polyhydroxyalkanoates (PHA), the microbial polymers that can be used as biodegradable alternatives for conventional plastics are not commercialized due to the high cost of suitable substrates. A comparative study is conducted to conclude that rubber seed oil is most effectively utilized by Bacillus...

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Bibliographic Details
Published in:Clean : soil, air, water air, water, 2017-10, Vol.45 (10), p.n/a
Main Authors: Kynadi, Anna S., Suchithra, T. V.
Format: Article
Language:English
Subjects:
Accumulation
Bacillus cereus
Biodegradability
Biodegradable materials
Biodegradation
bioplastics
biopolymers
Commercialization
Comparative analysis
Comparative studies
Dry weight
Genotype & phenotype
gram‐positive bacilli
Microorganisms
Oil
Oilseeds
Polyhydroxyalkanoates
Polymers
Rubber
rubber seed oil
Seeds
Substrates
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Summary:Polyhydroxyalkanoates (PHA), the microbial polymers that can be used as biodegradable alternatives for conventional plastics are not commercialized due to the high cost of suitable substrates. A comparative study is conducted to conclude that rubber seed oil is most effectively utilized by Bacillus cereus to accumulate PHA up to 524.0 ± 2.1 mg g−1 of cell dry weight and exhibits a final yield of 1.80 ± 0.06 g L−1. This is the first report on the use of rubber seed oil, which has negligible industrial relevance, for PHA accumulation. A wild Bacillus cereus strain isolated from oil‐contaminated soil is confirmed to synthesize polyhydroxyalkanoates (PHA), biodegradable polymers with properties similar to that of conventional plastics. Following a comparative analysis, rubber seed oil is selected as a novel, efficient, and low cost substrate for PHA production. FT‐IR characterization of the polymer is carried out and its biodegradability is proven.
ISSN:1863-0650
1863-0669
DOI:10.1002/clen.201600572