Journal ArticleDOI
Biosynthesis of medium-chain-length poly(hydroxyalkanoates) from soy molasses.
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TLDR
This work represents the first description of fermentative mcl-PHA production from the soy molasses, and the most prominent repeat-unit monomers in the PHAs were 3-hydroxydodecanoate,3-hydroxyoctanoATE, 3-HydroxydODecanoates, and 3- hydroxytetradecenoate.Abstract:
Pseudomonas corrugata was selected from a screening process for the bioconversion of inexpensive soy molasses into medium-chain-length poly(hydroxyalkanoates) (mcl-PHA). We obtained yields of 1.5 g cell dry weight (CDW)/l culture with growth medium supplemented with 2% (w/v) soy molasses, and of an average of 3.4 g CDW/l with 5% (w/v) soy molasses. Crude PHAs were obtained at 5–17% of CDW. The most prominent repeat-unit monomers in the PHAs were 3-hydroxydodecanoate, 3-hydroxyoctanoate, 3-hydroxydodecanoate, and 3-hydroxytetradecenoate. This work represents the first description of fermentative mcl-PHA production from the soy molasses.read more
Citations
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Journal ArticleDOI
Polyhydroxyalkanoates: bioplastics with a green agenda.
Tajalli Keshavarz,Ipsita Roy +1 more
TL;DR: Production of polyhydroxyalkanoates has been investigated for more than eighty years but recently a number of factors including increase in the price of crude oil and public awareness of the environmental issues have become a notable driving force for extended research on biopolymers.
Journal ArticleDOI
Microbial production of polyhydroxyalkanoates (PHAs) and its copolymers: A review of recent advancements.
Anbreen Anjum,Mohammad Zuber,Khalid Mahmood Zia,Aqdas Noreen,Muhammad Naveed Anjum,Shazia Tabasum +5 more
TL;DR: An overview of various substrates, microorganisms for the economical production of PHAs and its copolymers is provided.
Journal ArticleDOI
Production of polyhydroxyalkanoates: the future green materials of choice
TL;DR: The properties of PHAs, their uses, the various attempts towards the production, focusing on the utilization of cheap substrates and the development of different fermentation strategies for the production of these polymers are described, an essential step forward towards their widespread use.
Journal ArticleDOI
Bacillus subtilis as potential producer for polyhydroxyalkanoates
TL;DR: Certain unique properties of Bacillus subtilis such as lack of the toxic lipo-polysaccharides, expression of self-lysing genes on completion of PHA biosynthetic process – for easy and timely recovery, usage of biowastes as feed enable it to compete as potential candidate for commercial production of P HA.
Journal ArticleDOI
Conversion of agricultural feedstock and coproducts into poly(hydroxyalkanoates)
TL;DR: A brief survey of research performed in the production of poly(hydroxyalkanoate) polymers, with specific emphasis on studies describing the utilization of intact triacylglycerols, dairy whey, molasses, and meat-and-bone meal as substrates in the microbial synthesis of PHA polymers.
References
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Journal ArticleDOI
Pseudomonas oleovorans as a Source of Poly(β-Hydroxyalkanoates) for Potential Applications as Biodegradable Polyesters
TL;DR: In spite of the higher cell yields obtained with octanoate and nonanoate, the use of hexanoates and heptanoate yielded higher-molecular-weight polymers, which represent an entirely new class of biodegradable thermoplastics.
Journal ArticleDOI
Occurrence, synthesis and medical application of bacterial polyhydroxyalkanoate.
TL;DR: It was found that PHA producing bacteria are able to grow simultaneously limited by carbon and nitrogen substrates, and it became possible to produce PHA at high yields on toxic substrate and also control its composition accurately (tailor-made synthesis).
Journal ArticleDOI
Bacterial Polyesters: Biosynthesis, Biodegradable Plastics and Biotechnology
TL;DR: The discovery and chemical identification of the aliphatic polyester: poly(3-hydroxybutyrate), PHB, as a granular component in bacterial cells proceeded without any of the controversies which marked the recognition of macromolecules by Staudinger.
Journal ArticleDOI
Production of rhamnolipids by Pseudomonas chlororaphis, a nonpathogenic bacterium.
TL;DR: Rhamnolipid production by P. chlororaphis was achieved by growth at room temperature in static cultures of a mineral salts medium containing 2% glucose, and yields were comparable to the production levels reported in Pseudomonas aeruginosa grown with glucose as the carbon source.
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