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Bacterial Production of Hydroxyalkanoates (PHA)
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This review examines bacterial production of polyhydroxyalkanoates (PHA) as a biodegradable alternative to petroleum-based plastics, covering fermentation processes, scaling to industrial levels, and future trends, while noting that higher production costs currently prevent PHAs from competing commercially with conventional plastics.
The dependence of plastic materials is an increasing problem. Although plastics are very useful for humankind many disadvantages derived from the difficulties linked to recycling and disposal are well known. A feasible alternative is the production and use of bioplastics. These compounds have multiple options at the end of his life that can ensure their safety and efficacy of reuse or recovery. For example, raw materials can be returned to the manufacturer for recycling. Bioplastics synthesized through biotechnology include mainly polyhydroxyalkanoates (PHAs), common lipoidic storage materials accumulated by prokaryotes. Some processes for producing PHAs by fermentation using microorganisms have been developed at a different extent. However, biopolymers (PHA) market is under development, and therefore cannot compete with traditional plastics since manufacturing is still more expensive. In this review we have focused on the study of the production processes of bioplastics where bacteria are present, also describing the scaling to industrial level aspects and future trends.
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Current trends in the production of biodegradable bioplastics: The case of polyhydroxyalkanoates
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This review evaluates the state of polyhydroxyalkanoate (PHA) bioplastic production, comparing microbiological, enzymatic, and chemical manufacturing approaches for their potential to replace petroleum-based plastics. While PHAs are naturally biodegradable and mechanically versatile, cost and scalability remain major barriers to commercial adoption.
Production of polyhydroxyalkanoate (PHA) biopolymer from crop residue using bacteria as an alternative to plastics: a review
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This review examines how PHA, a biodegradable plastic made from crop waste using bacteria, could serve as a sustainable alternative to conventional plastics. While PHA breaks down naturally unlike traditional plastics that fragment into microplastics, challenges remain in making it heat-stable and cost-competitive enough for widespread industrial use.
Polyhydroxyalkanoate (PHA) Biopolyesters - Emerging and Major Products of Industrial Biotechnology
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This review examined polyhydroxyalkanoate biopolyesters as industrially produced biodegradable plastics, covering their microbial biosynthesis, material properties, and commercial applications as sustainable alternatives to conventional petroleum-based plastics.
A Review on Biological Synthesis of the Biodegradable Polymers Polyhydroxyalkanoates and the Development of Multiple Applications
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This review covers the biological production of polyhydroxyalkanoates, a family of biodegradable bioplastics that bacteria naturally produce from waste carbon sources. Researchers found that these biopolymers have properties similar to conventional plastics like polypropylene but can fully biodegrade, making them a promising alternative to petroleum-based plastics. The study emphasizes that scaling up production and establishing proper end-of-life management are critical steps for PHAs to compete with conventional plastics and help reduce microplastic pollution.
Polyhydroxyalkanoates as multifaceted biopolymers: an eco-friendly alternative to conventional plastics.
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Plastic pollution and the microplastics it creates are a growing health concern, but this review paper looks at a promising fix: plastics made by bacteria instead of fossil fuels, called PHAs, which naturally break down without leaving lasting waste. The researchers summarize existing studies on how to grow and produce these bacteria-made plastics more efficiently and affordably, since high costs are still the main reason they haven't replaced regular plastic on store shelves. While PHAs aren't widely available yet, this research maps out what's needed to make them a real, scalable alternative that could reduce our exposure to plastic waste in the environment
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