Production of poly-D(-)-3-hydroxybutyrate and poly-D(-)-3-hydroxyvalerate by strains ofAlcaligenes latus

Chen, Guoqiang; König, K. H.; Lafferty, R. M.

doi:10.1007/bf00580443

Cited by 44 publications

(14 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Attempts have been made to produce PHA as an environmental friendly thermoplastic because of its biodegradability and thermoplastic‐like properties 12–16. Much effort has also been spent to optimize PHB bioproduction and to blend PHB with other polymers to improve the physical and mechanical properties 17–26.…”

Section: Introductionmentioning

confidence: 99%

Thermal degradation of poly(3‐hydroxybutyrate) and poly(3‐hydroxybutyrate‐co‐3‐hydroxyvalerate) as studied by TG, TG–FTIR, and Py–GC/MS

Jun

et al. 2003

J of Applied Polymer Sci

View full text Add to dashboard Cite

ABSTRACT:The thermal degradation kinetics of poly(3-hydroxybutyrate) (PHB) and poly(3-hydroxybutyrate-co-3-hydroxyvalerate) [poly(HB-HV)] under nitrogen was studied by thermogravimetry (TG). The results show that the thermal degradation temperatures (T o , T p , and T f ) increased with an increasing heating rate (B). Poly(HB-HV) was thermally more stable than PHB because its thermal degradation temperatures, T o (0), T p (0), and T f (0)-determined by extrapolation to B ϭ 0°C/min-increased by 13°C-15°C over those of PHB. The thermal degradation mechanism of PHB and poly(HB-HV) under nitrogen were investigated with TG-FTIR and Py-GC/MS. The results show that the degradation products of PHB are mainly propene, 2-butenoic acid, propenyl-2-butenoate and butyric-2-butenoate; whereas, those of poly(HB-HV) are mainly propene, 2-butenoic acid, 2-pentenoic acid, propenyl-2-butenoate, propenyl-2-pentenoate, butyric-2-butenoate, pentanoic-2-pentenoate, and CO 2 . The degradation is probably initiated from the chain scission of the ester linkage.

show abstract

Section: Introductionmentioning

confidence: 99%

Thermal degradation of poly(3‐hydroxybutyrate) and poly(3‐hydroxybutyrate‐co‐3‐hydroxyvalerate) as studied by TG, TG–FTIR, and Py–GC/MS

Jun

et al. 2003

J of Applied Polymer Sci

View full text Add to dashboard Cite

show abstract

“…98 For instance, copolymers of P(3HB-co-3HV) are accumulated when the cultures are fed with odd-chain-length n-alkanoic acids such as propionic acid, valeric acid and heptanoic acid. 107 The generally-regarded-as-safe (GRAS) bacterium Lactococcus lactis has been genetically engineered to produce PHA beads. Unfortunately this recombinant strain did not show feasibility for commercial-scale production, since the beads were both smaller in size and contributed less PHA per CDW (6%) than other PHA producing bacteria.…”

Section: Bug Systems For Scaling Up: Wild Type Over Recombinant Cellsmentioning

confidence: 99%

Smart polyhydroxyalkanoate nanobeads by protein based functionalization

Dinjaski

Prieto

2015

Nanomedicine: Nanotechnology, Biology and Medicine

View full text Add to dashboard Cite

In the 21st century, we are coming into the age of personalized medicine. There is a growing use of biomaterials in the clinical setting. In this review article, the authors describe the use of natural polyhydroxyalkanoate (PHA) nanoparticulates, which are formed within bacterial cells and can be easily functionalized. The potential uses would include high-affinity bioseparation, enzyme immobilization, protein delivery, diagnostics etc. The challenges of this approach remain the possible toxicity from endotoxin and the high cost of production.

show abstract

“…Research and development of PHA production in China can be traced back 20 years [77][78][79][80]. In the beginning, research interests were focused on strain screening and breeding as well as optimization of fermentation conditions to increase intracellular PHA yield [81].…”

Section: Polyhydroxyalkanoatesmentioning

confidence: 99%

Organic Chemicals from Bioprocesses in China

Huang

Lin

et al. 2010

Biotechnology in China II

View full text Add to dashboard Cite

Over the last 20 years, China has successfully established a modern biotechnology industry from almost nothing. Presently, China is a major producer of a vast array of products involving bioprocesses, for some China is even the world's top producer. The ever-increasing list of products includes organic acids, amino acids, antibiotics, solvents, chiral chemicals, biopesticides, and biopolymers. Herein, the research and development of bioprocesses in China will be reviewed briefly. We will concentrate on three categories of products: small molecules produced via fermentation, biopolymers produced via fermentation and small chemicals produced by enzyme-catalyzed reactions. In comparison with the traditional chemical process, in which, nonrenewable mineral resources are generally used, products in the first and second categories noted above can use renewable bioresources as raw materials. The bioprocesses are generally energy saving and environmentally benign. For products developed via the third category, although the raw materials still need to be obtained from mineral resources, the biocatalysts are more effective with higher selectivity and productivity, and the bioprocesses occur under ambient temperature and pressure, therefore, these are "green processes." Most of the products such as citric acid, xanthan and acrylamide etc., discussed in this paper have been in large-scale commercial production in China. Also introduced herein are three scientists, Prof.

show abstract

Production of poly-D(-)-3-hydroxybutyrate and poly-D(-)-3-hydroxyvalerate by strains ofAlcaligenes latus

Cited by 44 publications

References 1 publication

Thermal degradation of poly(3‐hydroxybutyrate) and poly(3‐hydroxybutyrate‐co‐3‐hydroxyvalerate) as studied by TG, TG–FTIR, and Py–GC/MS

Thermal degradation of poly(3‐hydroxybutyrate) and poly(3‐hydroxybutyrate‐co‐3‐hydroxyvalerate) as studied by TG, TG–FTIR, and Py–GC/MS

Smart polyhydroxyalkanoate nanobeads by protein based functionalization

Organic Chemicals from Bioprocesses in China

Contact Info

Product

Resources

About