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How This Newly Discovered Amazonian Bacteria Is the Secret Key to Biodegrading Plastic

Apr 1, 2012 06:17 PM

Since the rise of private property and industrial production, modern capitalism has been on a undeniable crash course with Mother Nature. It's no so much that we'll end up murdering the entire planet, but just that the planet will quietly smother us with a pillow of famine, heat, cold and hurricanes. We over-farm land and replace the nutrients in the soil with oil. To package our oil-based produce, we wrap them in synthetic oil-based plastics, soon to be discarded in a trash heap or ocean.

Map outline of Hawaii in the Pacific Ocean.

The "Great Pacific Garbage Patch" is a floating sea of plastic waste in the Pacific Ocean covering an area larger than the state of Texas.

Boat surrounded by debris and plastic waste in water.

A boat making its way through the "Great Pacific Garbage Patch".

A pile of plastic bottles littered on the ground.

Plastic bottles in the "Great Pacific Garbage Patch".

Underwater scene showing marine debris and plastic waste entangled with aquatic plants.

More trash in the oceans.

Plastic waste scattered in ocean waves.

Plastic, plastic, everywhere.

Turtle with plastic debris in its mouth.

Turtle eating plastic.

Map outline of Hawaii in the Pacific Ocean.

The "Great Pacific Garbage Patch" is a floating sea of plastic waste in the Pacific Ocean covering an area larger than the state of Texas.

Boat surrounded by debris and plastic waste in water.

A boat making its way through the "Great Pacific Garbage Patch".

A pile of plastic bottles littered on the ground.

Plastic bottles in the "Great Pacific Garbage Patch".

Underwater scene showing marine debris and plastic waste entangled with aquatic plants.

More trash in the oceans.

Plastic waste scattered in ocean waves.

Plastic, plastic, everywhere.

Turtle with plastic debris in its mouth.

Turtle eating plastic.

However, Mother Earth sometimes turns a kind eye on her attackers and graces is us with a ridiculously useful plant, animal, or fungus to enslave to our own ends.

Researchers working in the Ecuadorian Amazon have isolated several species of fungi and bacteria that can actually metabolize plastic! These crazy critters can live at the bottom of a trash heap with no air at all, happily munching away on polyester polyurethane plastic.

Plastic is made up of extremely stable carbon to carbon bonds. The process of turning petroleum into plastic creates long chains of monomers bound together by these carbon bonds. Our magic fungus sustains itself by breaking up these bonds and metabolizing the freed carbon.

The study examined 20 different species of bacteria and fungi that all exhibited the ability to break down plastics. The picture below shows a sample of some of the most active decomposers after a two week test period.

Study results comparing control and test organisms in a laboratory setting, displaying test tubes on the left and a bar graph on the right.

The most active decomposing fungi, Lasiodiplodia, ate away a full 8 cm of plastic in just two weeks. In the image above, the metabolized plastic has turned clear, while the untouched plastic remains white. Below, the lines in the graph which slope downward are the most effective plastic decomposing fungi.

Graph showing optical density measurements over time for different bacterial strains.

On a side note, it's good to know that such ground breaking research is done with improvised tin foil stoppers...

Two laboratory flasks with foil covers, one containing a clear liquid and the other a milky solution.

Pestalotiopsis microspora E2712A (left) degrading PUR Impranil DLN as a sole carbon source after a 16-day time course. The remaining material in the flask is the result of fungal growth.

While the findings are certainly encouraging, future studies will have to be done about the possible ecological impacts of introducing swarms of these spores into the world's dumps. Even then, the realities of capitalism will preclude a universal implementation of magic plastic-eating spore powder. The discovery does bring us hope for rolling back the ecological crimes of the past, after we get the consumption of the present under control.

Imagine one day, having household microbial plastic composters! I suppose our next step as mad scientists is to find some samples of these fungi and make our own homebrew plastic compost!

Share your ideas for putting these fungi to work on our forum. Share your personal compost ideas and projects on our corkboard. Sharing is caring and even more so with scientific knowledge.

Photos by NH Register, Scietch, Living Green Network, Green Manolo, Local Philosophy, Fast Company, epromos, frankenstoen

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