Wax worm larvae, commonly known as wax worms, rapidly digest polyethylene, one of the most resistant and widespread types of plastic. These insects typically parasitize beehives, feeding on beeswax. Researchers discovered that the chemical structures of beeswax and polyethylene are similar, enabling the larvae to effectively break down plastic, according to Wired.
The Wax Worm Phenomenon and Plastic Recycling
Researchers found that approximately 2,000 wax worms can break down an entire polyethylene bag in just 24 hours. Bryan Cassone, a biology professor at Brandon University, noted that adding stimulants like sugar could significantly reduce the number of larvae required.
Symbiotic Acinetobacter bacteria, located in the larvae’s gut, play a crucial role in this process by breaking down the polymer. Scientists also discovered that genes responsible for fat metabolism are activated in the worms, enabling them to convert plastic decomposition products into energy and accumulate lipids.
However, a diet consisting solely of plastic proved fatal for the larvae in the long term. Consequently, researchers decided to introduce nutritional supplements to their diet, which also enhanced the efficiency of the recycling process.
Technological Prospects
Scientists have proposed two primary applications for this unique technology. First, cultivating the worms on specialized farms. Second, developing industrial bioreactors: This method involves isolating enzymes and bacteria from the larvae’s intestines to create bioreactors capable of degrading plastic without the direct involvement of the insects themselves.
