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Related Concept Videos

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Bioplastics derived from microbial processes present a sustainable alternative to conventional petroleum-based plastics. Among these, polyhydroxyalkanoates (PHAs), particularly polyhydroxybutyrates (PHBs), have emerged as prominent candidates due to their biodegradability and biocompatibility. These polymers are synthesized by a variety of bacteria, such as Cupriavidus necator and Pseudomonas putida, which naturally accumulate PHAs as intracellular carbon and energy reserves, especially under...
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Polyethylene terephthalate (PET) is a synthetic polymer widely utilized in the packaging industry, particularly for bottles and containers. Due to its chemical stability and durability, PET accumulates in the environment, contributing significantly to plastic pollution. It comprises repeating units of terephthalic acid and ethylene glycol, resulting in a semi-crystalline structure that is resistant to natural degradation processes.A notable breakthrough in plastic biodegradation came with the...
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The introduction of polyesters has brought major development to the textile industry. The wrinkle-free behavior of polyester blends has eliminated the need for starching and ironing clothes.
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Step-growth or condensation polymerization is a stepwise reaction of bi or multifunctional monomers to form long-chain polymers. As all the monomers are reactive, most of the monomers are consumed at the early stages of the reaction to form small chains of reactive oligomers, which then combine to form long polymer chains in the late stages. Hence, the reaction has to proceed for a long time to achieve high molecular weight polymers.
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The microbial conversion of organic matter into biofuels holds potential as a renewable energy source. Among biofuel sources, microalgae are recognized as a highly efficient and adaptable feedstock for biodiesel production, owing to their rapid biomass accumulation, elevated lipid productivity, and capacity to proliferate in diverse aquatic systems, including freshwater, marine, and wastewater habitats. Unlike terrestrial crops, microalgae do not compete for land and can achieve significantly...
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The polymerization process that involves carbanion as an intermediate is called anionic polymerization. It is also a type of addition or chain-growth polymerization. Anionic polymerization gets initiated by a strong nucleophile such as an organolithium or a Grignard reagent. The most commonly used initiator for anionic polymerization is butyl lithium. Monomers involved in anionic polymerization must possess a vinyl group bonded to one or two electron-withdrawing groups. For instance,...
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Polyhydroxyalkanoates - what are the uses? Current challenges and perspectives.

Farha Masood1,2, Tariq Yasin3, Abdul Hameed2

  • 1a Department of Biosciences , COMSATS Institute of Information Technology (CIIT) , Islamabad , Pakistan .

Critical Reviews in Biotechnology
|June 26, 2014
PubMed
Summary

Microbial polyhydroxyalkanoates (PHAs) offer biodegradable, biocompatible, and non-toxic properties. This review explores their current applications and future potential in biomedical, environmental, and industrial fields.

Keywords:
Biocompatiblebiodegradablebiofuelbiomedical implantgreen compositepolyhydroxyalkanoatestherapeutic carriertissue engineering

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Area of Science:

  • Biotechnology and Materials Science

Background:

  • Microbial polyhydroxyalkanoates (PHAs) have garnered significant attention due to their unique properties.
  • These properties include biodegradability, biocompatibility, non-toxicity, and thermoplasticity, making them versatile materials.

Purpose of the Study:

  • To provide a critical review of existing research on polyhydroxyalkanoates (PHAs).
  • To highlight current trends and future perspectives on the value-added applications of PHAs.
  • To explore the utility of PHAs across biomedical, environmental, and industrial sectors.

Main Methods:

  • Literature review of scientific publications on PHAs.
  • Analysis of research trends and application domains.
  • Synthesis of information on PHA properties and uses.

Main Results:

  • PHAs exhibit a range of valuable properties suitable for diverse applications.
  • Significant progress has been made in understanding and utilizing PHAs.
  • The review identifies key areas for future development and application.

Conclusions:

  • Polyhydroxyalkanoates (PHAs) represent a promising class of biopolymers with broad applicability.
  • Continued research and development are expected to expand their use in critical industries.
  • PHAs offer sustainable alternatives in various technological fields.