Polyhydroxyalkanoates (PHAs) are polyester materials made by bacteria consuming carbon-based substances and going through starvation for basic nutrients such as nitrogen. The result of this type of stress causes the bacteria to accumulate large amounts of high-energy granules. Once these granules are separated from the bacterium and appropriately processed, the resulting material is a type of plastic that can be 100% biodegradable and can also exhibit similar characteristics as a regular polymer material (stretchability, moldability, printability, etc.). Unlike regular polymers, however, PHAs can completely decompose in soil, compost, or ocean water.
It’s hard to believe, but science supports it.
It’s like a revolution in a petri dish.
The future of PHA is dependent upon its continued development in several areas including packaging, food/beverage, medical devices and agriculture as those practices create opportunities for replacing traditional plastic products while also enabling a circular economy.
The findings of the review are based on an extensive literature review by the authors of Biotechnology Advances (PubMed/NCBI), with findings reflecting PHA’s ability to be scaled in each of the identified sectors. In all cases the authors concluded that “scale up” represents the only barrier present whereas, all other aspects of PHA technology represented no barriers to commercial use.
Towards Packaging‘s 2025 PHA market analysis
- $133B bioplastics market projected by 2035 (MRFR, 2025)
- 1% CAGR for bioplastics 2025–2035
- 64% PHA revenue from packaging applications in 2024
- 55% PHA film consumption from food & beverage sector, 2024
According to Towards Packaging’s latest PHA market analysis, these numbers demonstrate both enthusiasm for and the structural need for recycled materials. The EU PHA Regulations are now requiring 60% of packaging to be recycled by 2025 and increasing that to 80% by 2035. As a result, companies that once used sustainable packaging as a differentiator in the marketplace now consider sustainable packaging’s use to be a requirement for compliance.
Why PHA Wins
There are many different types of bioplastics, including PLA, PBAT, and starch-based blends. However, from an end-of-life perspective, the one that really stands out is PHA.
PLA is by far the most widely used bioplastic, but requires that you put it in an industrial composting facility, where specific composting conditions (temperature, humidity, time) can be met in order to break PLA down into compost. If you leave a cup made from PLA in your yard, after 5 years it will still be there! In contrast, when PHA breaks down, it will break down in your yard, in your home compost pile, and in a marine environment (without requiring any type of industrial facility).
Not only do PHAs have excellent barrier properties, but their barrier properties are also becoming more expensive to manufacture than any other competitor’s (ScienceDirect, 2024). Some electrospun PHA/bacterial cellulose nanocomposites produce significantly better oxygen and moisture barriers which is important for fresh produce as well as dairy products and ready-to-eat meals. One of the most notable developments in 2024 was a European consortium that developed a process to produce PHAs using a feedstock made from industrial methane emissions, which reduced production costs by 20% compared to traditional methods of producing PHA through sugar-based fermentation.
The cost gap between PHA and traditional plastics has been a major weakness for PHA. Currently, PHA costs about 3-4 times the price of standard polypropylene based on market analysis. However, as fermentation optimizations and solvent-recycling extraction methods become more advanced and as regulatory pressures drive prices higher for conventional plastics via carbon pricing and extended producer responsibility programs, the economics will start to match each other.
Supply Chain Implications
Let’s talk practically about packaging materials. So, for instance, a brand may switch their packaging material; however, there are still many existing supply chain networks like warehouses, cold chains, logistics networks to navigate before getting it to the consumer. PHA is thermoplastic, meaning it can be manufactured using standard injection moulding, extrusion, and thermoforming machinery and provides packaging manufacturers with a very cost-effective conversion solution since no additional capital investment will be required. The ability to convert using standard equipment represents a significant difference between theoretical sustainability and usable sustainability.
For global supply chains managers, PHA is likewise a straightforward solution for meeting sustainability reporting obligations like reductions in carbon footprint, metrics for recyclability as per the EU Packaging and Packaging Waste Regulation (PPWR), and alignment of your packaging materials with applicable United Nations Sustainable Development Goals, including 12 (responsible consumption), 13 (climate action), and 14 (life below water). With PHA packaging, you’re able to meet all three of these goals simply by switching to just one type of material.
Where TerraPHA Enters the Picture
TerraPHA was built around a single conviction that the gap between PHA’s scientific potential and commercial reality is a supply chain problem, not just a chemistry problem. The company bridges that gap for manufacturers, brands, and logistics operators who want to move fast without reinventing their operations.
- Custom PHA formulations matched to specific packaging applications
- Drop-in compatibility with existing extrusion and molding lines
- Scalable supply from pilot batches to full production volumes
- End-of-life guidance and compostability certification support
- Supply chain sustainability reporting aligned with EU PPWR targets
- Technical R&D partnership for novel barrier and functional films
Whether you’re a food brand looking to replace fossil-fuel trays, an e-commerce operator searching for compostable mailers, or a contract packager navigating new regulatory requirements, TerraPHA’s team works alongside you to find the PHA solution that performs at scale.
Frequently Asked Questions
Q: What makes TerraPHA different from other bioplastic suppliers?
TerraPHA combines material science expertise with supply chain integration support, meaning clients get more than a raw material. TerraPHA provides custom PHA formulations tuned to specific performance requirements (barrier properties, flexibility, thermal resistance), scalable supply chains that grow with your volumes, end-of-life and compostability certification guidance, and ongoing R&D partnership. The focus is on making the transition to PHA packaging operationally seamless, not just scientifically possible.
Q: Is PHA packaging actually compostable at home or does it need an industrial facility?
PLA needs industrial composting at higher temperatures to be broken down, PHA biodegrades under home compost conditions, soil, or even marine conditions with the help of naturally occurring microbes. The process’s speed will depend on factors such as temperature and humidity levels as well as microbial activity, but there is no need for any special industrial facilities for the decomposition process.
Q: Can PHA packaging be processed on our existing manufacturing equipments?
Yes, and this is one of the most commercially valuable characteristics of PHA. PHA is a thermoplastic polymer that is able to be manufactured through traditional injection molding, extrusion, blown film, and thermoforming processes. The majority of converters have little difficulty incorporating PHA into their systems without any significant cost outlay, as opposed to other materials that necessitate entirely new processing equipment.
