Biodegradable Plastics Production
Mostrando 1-12 de 14 artigos, teses e dissertações.
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1. Microbial Synthesis and Characterization of Biodegradable Polyester Copolymers from Burkholderia Cepacia and Cupriavidus Necator Strains Using Crude Glycerol as Substrate
Abstract Polymers are materials of pronounced importance in the modern world, since they are massively present in everyday life, especially in the form of packaging. However, most of these materials are derived from non-renewable sources and their disposal generates large volumes of waste, which is extremely damaging to natural environments. In this context,
Braz. arch. biol. technol.. Publicado em: 24/10/2019
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2. ASSESSMENT OF POLYHYDROXYALKANOATE SYNTHESIS IN SUBMERGED CULTIVATION OF Cupriavidus necator AND Burkholderia cepacia STRAINS USING SOYBEAN AS SUBSTRATE
ABSTRACT Polyhydroxyalkanoates (PHA) are biocompatible and biodegradable polyesters produced by prokaryotic microbes for energy storage and carbon reserve. These polymers are an option to diminish the massive impact caused by inadequate disposal of synthetic plastics. In this study, evaluation and characterization of PHA produced by Cupriavidus necator (IPT
Braz. J. Chem. Eng.. Publicado em: 15/07/2019
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3. Materiales eco-compatibles reforzados a base de almidón de mandioca para aplicaciones agronómicas
ABSTRACT Plastic mulch is used in various crops production in order to increase yield, extend growing season, weed control, increase fertilizers efficiency and improve soil conditions. However, since such plastics removal and disposal represent not only an additional cost, but also a source of environmental pollution, interest in starch-based materials as a
Matéria (Rio J.). Publicado em: 02/08/2018
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4. FILMES BIODEGRADÁVEIS DE AMIDO DE MANDIOCA, PULULANA E CELULOSE BACTERIANA
The largest consumption of plastics in the world is referred to the synthetic polymers, which are not biodegradable and have a non-renewable source, generating a large environmental impact, especially in urban centers. As a result, in the last two decades several polymers obtained from renewable sources (biopolymers) have been studied as potential raw materi
Quím. Nova. Publicado em: 2016-11
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5. Extraction and Characterization of Polyhydroxybutyrates (PHB) from Bacillus thuringiensisKSADL127 Isolated from Mangrove Environments of Saudi Arabia
ABSTRACTPolyhydroxybutyrate (PHB) is a renowned biodegradable plastic that do not release any toxins or residues in the environment like petroleum based plastics. In the present study, 50 bacteria isolated from mangrove niche, Saudi Arabia, were screened for maximum PHB production. All the 50 strains showed positive for PHB production, of which one strain sh
Braz. arch. biol. technol.. Publicado em: 2015-10
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6. Volatile fatty acids influence on the structure of microbial communities producing PHAs
Polyhydroxyalkanoates (PHAs) can be produced by microorganisms and are a biodegradable alternative to fossil-fuel based plastics. Currently, the focus is on reducing production costs by exploring alternative substrates for PHAs production, and on producing copolymers which are less brittle than monomers. Accordingly, this study used a substrate consisting of
Braz. J. Microbiol.. Publicado em: 2014-06
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7. Production and characterization of PHA from recombinant E. coli harbouring phaC1 gene of indigenous Pseudomonas sp. LDC-5 using molasses
Polyhydroxyalkanoates (PHA) are biodegradable and biocompatible green thermoplastics, synthesized by wide variety of bacteria as an intracellular carbon and energy storage intermediate. They are used as an alternative to nonrenewable petroleum derived plastics. The current interest in these biopolyesters is stimulated by the search for cost-effective capital
Brazilian Journal of Microbiology. Publicado em: 2011-09
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8. Produção e caracterização de filmes biodegradáveis de amido de mandioca e goma xantana
Biodegradable plastics from renewable, especially agricultural sources, have been the aim of constant scientific interest in recent years. Cassava starch is an abundant, renewable and low cost natural polymer considered a promising substitute for oil-based plastic packaging materials. However, starch-based plastic films tend to show low resistance to moistur
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 15/03/2010
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9. Production of biodegradable plastics using sugarcane bagasse hemicellulosic hydrolysate. / Produção de plásticos biodegradáveis utilizando hidrolisado hemicelulósico de bagaço de cana-de-açúcar.
The aim of this thesis is to produce poly3-hydroxybutyrate (P3HB) and poli-3-hidroxibutirate-co-3-hydroxyvalerate (PHB-co-3HV), biodegradable polymers, using hemicellulosic hydrolysate, rich in xylose, from sugarcane bagasse. Metabolic flux analysis in silico of xylose metabolism indicated that, though metabolism redirection is possible to increase P3HB yiel
Publicado em: 2010
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10. Cloning and heterologous expression of genes responsible for synthesis of polyhydroxybutyrato em Bradyrhizobium elkanii / Clonagem e expressão heterologa dos genes responsaveis pela sintese de polihidroxibutirato em Bradyrhizobium elkanii
Polyhydroxyalkanoates (PHAs) are polymers of hydroxyalkanoate acids, produced and accumulated intracellularly as a source of carbon and energy storage material, in prokaryotic cells. Often, the PHAs accumulation occurs in conditions when the carbon source is in excess but one or several other nutrients are limited, and may represent up to 80% of the cell dry
Publicado em: 2009
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11. Produção biotecnológica de poli-hidroxialcanoatos para a geração de polímeros biodegradáveis no Brasil
In recent years, several studies have been developed in Brazil to produce biodegradable materials. A particular family of bacterial polymers, the polyhydroxyalkanoates (PHA), has received special attention. PHAs are thermoplastic, biodegradable, biocompatible, are synthesised from renewable resources and can substitute petrochemical plastics in some applicat
Química Nova. Publicado em: 2007
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12. Polímeros biodegradáveis - uma solução parcial para diminuir a quantidade dos resíduos plásticos
The large use of plastics has generated a waste deposit problem. Today plastic wastes represent 20% in volume of the total waste in the municipal landfills. To solve the disposal problem of plastics methods have been employed such as incineration, recycling, landfill disposal, biodegradation and the use of biodegradable polymers. Incineration of plastic wast
Química Nova. Publicado em: 2006-07