polyhydroksialkanoaatteja

Polyhydroksialkanoaatteja, often abbreviated as PHAs, are a family of polyesters naturally synthesized by many microorganisms. These bacteria produce PHAs as intracellular storage materials, typically in response to nutrient limitations. They serve as a source of carbon and energy for the bacteria when other nutrients are scarce.

PHAs are biodegradable and biocompatible, making them attractive for a range of applications. Their properties can vary significantly depending on the specific monomers incorporated into the polymer chain, allowing for a wide spectrum of physical characteristics, from flexible to rigid. This versatility stems from the ability of microorganisms to produce a diverse range of PHA copolymers.

The production of PHAs is achieved through fermentation processes where microorganisms are cultured under controlled conditions. After fermentation, the PHAs are extracted from the bacterial biomass. Research and development efforts are focused on optimizing production yields, reducing costs, and expanding the range of achievable PHA properties. Potential applications for PHAs include biodegradable plastics, biomedical devices like sutures and drug delivery systems, and agricultural films. Their natural origin and biodegradability position them as a sustainable alternative to conventional petroleum-based plastics.