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Bioplastics

Bioplastics

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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Related Experiment Video

Updated: May 6, 2026

Composite Scaffolds of Interfacial Polyelectrolyte Fibers for Temporally Controlled Release of Biomolecules

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Published on: August 19, 2015

Indigenously produced polyhydroxyalkanoate based co-polymer as cellular supportive biomaterial.

A Shabna¹, V Saranya, J Malathi

¹L&T Microbiology Research Centre Kamal Nayan Bajaj Research Institute, Vision Research Foundation, Chennai, Tamil Nadu, India.

Journal of Biomedical Materials Research. Part A

|November 14, 2013

Summary

This study found that polyhydroxyalkanoate (PHA):polyethylene glycol (PEG) scaffolds enhance cell growth and proliferation compared to conventional plastics. These PHA:PEG materials show promise for tissue engineering applications.

Keywords:

MNNG-S Pseudomonas sp SCL-MCL copolymer biocompatibility continuous culture polyhydroxyalkanoates

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Area of Science:

Biomaterials Science
Tissue Engineering
Polymer Chemistry

Background:

Novel polyhydroxyalkanoate (PHA) copolymers were synthesized from a mutant Pseudomonas sp. strain.
PHA was blended with polyethylene glycol (PEG), polylactic acid (PLA), and montmorillonite (MMT) to enhance scaffold properties.

Purpose of the Study:

To evaluate cell growth and proliferation on PHA-based scaffolds.
To assess the biocompatibility and cellular interaction capabilities of PHA blends for tissue engineering.

Main Methods:

Protein adsorption studies were conducted to assess scaffold-cell interaction.
Cell viability was evaluated using CCK-8 and MTT assays with various cell lines (3T3 fibroblast, HeLa, HEp-2, Vero, McCoy).
Cell proliferation was measured using a BrdU ELISA kit, and cell morphology was observed via phase contrast microscopy and SEM.

Main Results:

PHA:PEG blends demonstrated superior protein adsorption compared to other PHA blends.
Cell viability was comparable to controls for most blends, except PHA:MMT. PHA:PEG showed increased viability.
PHA:PEG scaffolds significantly increased cell proliferation and maintained normal cell morphology, with HEp-2 cells observed to be enclosed within the matrix.

Conclusions:

The PHA:PEG scaffold supports superior cell growth and proliferation compared to conventional plastic surfaces.
PHA:PEG is a promising biomaterial for tissue engineering applications due to its biocompatibility and ability to support cellular functions.