Shetye, Laukik published the artcilePoly(3-hydroxybutyrate-co-3-hydroxyvalerate) synthesis in Nostoc muscorum from biodiesel industry waste: a sustainable model of bioplastic production, Category: esters-buliding-blocks, the main research area is Nostoc muscorum biodiesel industry waste bioplastic glycerol.
Poly-3-hydroxybutyrate-co-hydroxyvalerate [P(HB-co-HV)] co-polymer has superior material properties than poly-3-hydroxybutyrate (PHB) and hence exhibits wide applications, especially in the biomedical industry. But the high cost of production restricts its market potential when directly competing with synthetic polymers. Hence, the current study proposes a cost-effective model of [P(HB-co-HV)] synthesis in Nostoc muscorum using biodiesel industry waste containing glycerol as the principal organic substrate. It is the first report on [P(HB-co-HV)] synthesis in N. muscorum using unrefined glycerol as a carbon source. Our findings show that N. muscorum accumulated 31.3% cell dry weight of [P(HB-co-HV)] from the biodiesel waste production media. FTIR and GC-MS anal. confirmed the polymer obtained was [P(HB-co-HV)]. Gel permeation chromatog. anal. estimates the weight average mol. weight (Mw) of the co-polymer to be 315,420 g mol-1 with a number average mol. weight (Mn) of 74,043 g mol-1 and a polydispersity index (P.D.I.) of 4.25. TGA/DTA anal. shows that its thermal decomposition temperature [Td(100%)] was 246°C and the melting temperature (Tm) was 158°C resp. The tensile strength, elongation to break, and Young’s modulus of the [P(HB-co-HV)] films were 25.8 MPa, 62.2%, and 0.98 GPa, resp. The results indicate that cyanobacteria can synthesize PHA co-polymers similar to heterotrophic bacteria. Also, the proposed PHA synthesis model envisages a reduction in the production cost of PHA co-polymer since expensive synthetic media gets replaced with cheap and readily available raw material.
Journal of Applied Phycology published new progress about Biodiesel fuel. 5405-41-4 belongs to class esters-buliding-blocks, name is Ethyl 3-hydroxybutanoate, and the molecular formula is C6H12O3, Category: esters-buliding-blocks.
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics