نتایج جستجو برای: poly β hydroxybutyrate

تعداد نتایج: 257915  

Journal: :Applied and environmental microbiology 2010
Björn Andreessen Alexander Steinbüchel

3-Hydroxypropionate (3HP) is an important compound in the chemical industry, and the polymerized 3HP can be used as a bioplastic. In this review, we focus on polyesters consisting of 3HP monomers, including the homopolyester poly(3-hydroxypropionate) and copolyesters poly(3-hydroxybutyrate-co-3-hydroxypropionate), poly(3-hydroxypropionate-co-3-hydroxybutyrate-co-3-hydroxyhexanoate-co-3-hydroxyo...

2016
Priyanka Sharma Bijender Kumar Bajaj

High cost of poly-3-hydroxybutyrate production remained a major hindrance for its wide range applications. In the current study poly-3-hydroxybutyrate producing bacteria were isolated from environmental sources. Highest poly-3hydroxybutyrate producing isolate Bacillus cereus PS 10 was investigated for its ability to use wide range of low-cost carbon sources including agro-industrial residues, v...

Journal: :Dalton transactions 2010
Tanmoy Kumar Saha Bijja Rajashekhar Ravikumar R Gowda Venkatachalam Ramkumara Debashis Chakraborty

Bis(imino)phenoxide complexes of zirconium possess spectacular reactivity towards the solvent-free polymerization of cyclic ester monomers and lactides. Polymerization of lactide is living and the resulting product has exceptionally high number average molecular weights (Mn). Polymerization of β-butyrolactone gives syndiotactic poly(3-hydroxybutyrate) with good Mn and molecular weight distribut...

Journal: :Chemical communications 2012
Cuiling Xu Insun Yu Parisa Mehrkhodavandi

An ethoxy-bridged dinuclear indium catalyst was used for the ring opening polymerization of the cyclic ester β-butyrolactone to form the biodegradable polyester poly(hydroxybutyrate) (PHB). The catalyst shows remarkable activity and control during polymerization, allowing for formation of diblock polymers. Addition of high ratios of alcohols to the catalyst leads to fast chain transfer and immo...

Journal: :Journal of bacteriology 2011
André Antunes Intikhab Alam Vladimir B Bajic Ulrich Stingl

We present the genome of Salinisphaera shabanensis, isolated from a brine-seawater interface and representing a new order within the Gammaproteobacteria. Its adaptations to physicochemical and nutrient availability fluctuations include six genes encoding heavy metal-translocating P-type ATPases and multiple genes involved in iron uptake, siderophore production, and poly-β-hydroxybutyrate synthe...

2001
Tadahisa Iwata Yukiko Furuhashi Fengyu Su Yoshiharu Doi

Single crystals of biodegradable aliphatic polyesters, poly([R]-3-hydroxybutyrate), poly([R]-3-hydroxyvalerate), poly(L-lactic acid), poly( -propiolactone), poly(4-hydroxybutyrate), poly(Æ-valerolactone), poly("caprolactone), poly(ethylene succinate) and poly(tetramethylene adipate), were grown from dilute solution by isothermal crystallization, and the crystal structures and morphologies were ...

Journal: :Chemical communications 2011
Jing-Ling Zhu Kerh Li Liu Zhongxing Zhang Xian-Zheng Zhang Jun Li

Amphiphilic star-block copolymers based on poly(3-hydroxybutyrate) with adamantyl end-functionalization were synthesized via anionic ring-opening polymerization and alkyne-azide "Click Chemistry" coupling. In aqueous medium, the copolymers self-assembled into nanogel-like large compound micelles, and transformed into vesicular nanostructures under the direction of host-guest interaction between...

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