PHA is the first bioplastic resin to be certified by TUV as biodegradable and compostable in all mediums including soil, compost, fresh water and salt water environments. PHAs are polyesters biosynthesized by a bacterium fed by inexpensive oils derived from the seeds of plants such as canola and soy. Stirling Flavors is proud to be the exclusive distributor for PHA straws. Call or email now for more information on how your business can replace plastic straws with natural, organic straws. (Minimum purchase required).