Development and characterization of polyhydroxybutyrate biocomposites and their application in the removal of heavy metals

Hungund, Basavaraj S.; Umloti, S.G.; Upadhyaya, Kishor; Manjanna, J.; Yallappa, S.; Ayachit, N. H.

doi:10.1016/j.matpr.2018.06.495

Cited by 12 publications

(7 citation statements)

References 12 publications

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“…It has been reported that bacteria synthesize more than 150 different types of PHAs (Wu et al, 2016). PHAs derived bacterial cells have characteristics analogous to that of conventional polymers such as polypropylene (Hungund et al, 2018). Many microorganisms can degrade PHAs quickly (3-9 months) by using their own PHA depolymerases to produce carbon dioxide and water (Jendrossek 2020).…”

Section: The Physical Properties Of Phas and Their Monomer Makeupmentioning

confidence: 99%

A Review on Production of Polyhydroxyalkanoates in Microorganisms

Ranganadhareddy¹

2022

J Biochem Technol

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Plastic waste is a concern that is growing due to its nondegradable nature. Many species of microorganisms naturally produce polyhydroxyalkanoates, macromolecule-polyesters that may be used to replace conventional plastics. A variety of microorganisms can completely biodegrade PHAs within a year, which is unlike petroleum-derived plastic that takes decades to degrade. Carbon dioxide and water are produced during this biodegradation, which is returned to the environment. Many methods of mass-producing PHAs have been attempted. Genetically modified microorganisms can be used to establish novel production mechanisms. PHA production, as well as the expression of a few genes, must be maximized in the host for this task. Despite significant advances that have been achieved in generating transgenic organisms, acquiring large quantities of PHA at reasonable costs continues to remain a difficulty. The increasing awareness as well as the promising nature of utilizing microorganisms as a source of polyhydroxyalkanoates are highlighted in this review.

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Section: The Physical Properties Of Phas and Their Monomer Makeupmentioning

confidence: 99%

A Review on Production of Polyhydroxyalkanoates in Microorganisms

Ranganadhareddy¹

2022

J Biochem Technol

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“…PHB is biocompatible, biodegradable, and bioabsorbable and can be spun into fibers, and its in vivo degradation results in nontoxic metabolites, which naturally exist in blood . PHB fibers, due to their high surface area/mass ratio, are an adequate material for filters for water and air, , curative dressings, scaffolds to support cell adhesion and proliferation, − and drug delivery . PHB is also adequate for packaging and for the release of pesticides and mulch. , …”

Section: Introductionmentioning

confidence: 99%

Solution-Blown Poly(hydroxybutyrate) and ε-Poly-l-lysine Submicro- and Microfiber-Based Sustainable Nonwovens with Antimicrobial Activity for Single-Use Applications

Dias

Robles

Sinha-Ray

et al. 2021

ACS Biomater. Sci. Eng.

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Antimicrobial nonwovens for single use applications (e.g., diapers, sanitary napkins, medical gauze, etc.) are of utmost importance as the first line of defense against bacterial infections. However, the utilization of petrochemical nondegradable polymers in such nonwovens creates sustainability-related issues. Here, sustainable poly(hydroxybutyrate) (PHB) and ε-poly-l-lysine (ε-PLL) submicro- and microfiber-based antimicrobial nonwovens produced by a novel industrially scalable process, solution blowing, have been proposed. In such nonwovens, ε-PLL acts as an active material. In particular, it was found that most of ε-PLL is released within the first hour of deployment, as is desirable for the applications of interest. The submicro- and microfiber mat was tested against C. albicans and E. coli, and it was found that ε-PLL-releasing microfibers result in a significant reduction of bacterial colonies. It was also found that ε-PLL-releasing antimicrobial submicro- and microfiber nonwovens are safe for human cells in fibroblast culture. Mechanical characterization of these nonwovens revealed that, even though they are felt as soft and malleable, they possess sufficient strength, which is desirable in the end-user applications.

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“…scl-PHAs and mcl-PHAs [33,36,[45][46][47][48][49] The heteropolymers include P(3HHx-co-3HO). These can be used to manufacture high value added products such as drug delivery systems, medical implants and stitching [93][94][95]. Lcl-PHAs are less frequent and are therefore, rarely studied [61].…”

Section: Hp= Homopolymersmentioning

confidence: 99%

“…Hungund et al [93] (2018) developed and used polyhydroxyalkanoates (PHAs) composites such as PHB-Starch and PHB-PEG composites for the removal of heavy metals from the aqueous solution. These composites have very positively showed successful adsorption of Pb 2+ ion.…”

Section: Removal Of Heavy Metalsmentioning

confidence: 99%

Plastics Versus Bioplastics

Nadeem

Muneer

2021

Degradation of Plastics

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Plastics are polymers of long chain hydrocarbons based on petrochemicals. Due to their physiochemical properties these are almost non-degradable and their complete recycling is impossible. High production rate and less disposal capacities have made plastic environmental pollutant resulting in severe impacts on the health of organisms and destruction of habitats thus effecting the biosphere in different ways. Biodegradation, thermal and catalytic degradation of plastics is widely studied to ensure a sustainable disposal of plastic waste with limited results until the present however, a new field where ecofriendly polymers obtained from natural biomass are used to make materials is flourishing. Bioplastics are polymers derived from biomass such as cellulose, starch, chitin and microbial polyhydroxyalkanoates that have the ability to produce products of daily use that can replace their counter parts made from the synthetic plastics. Bioplastics degrade easily in natural environment and replace the petrochemical based plastic polymers, thus saving the natural environment from plastic pollution and ensuring a sustainable environment.

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Development and characterization of polyhydroxybutyrate biocomposites and their application in the removal of heavy metals

Cited by 12 publications

References 12 publications

A Review on Production of Polyhydroxyalkanoates in Microorganisms

A Review on Production of Polyhydroxyalkanoates in Microorganisms

Solution-Blown Poly(hydroxybutyrate) and ε-Poly-l-lysine Submicro- and Microfiber-Based Sustainable Nonwovens with Antimicrobial Activity for Single-Use Applications

Plastics Versus Bioplastics

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