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Laboratory Report

Articles: Laboratory Report

Destruction of Phenolic Resins

Phenolic resins are produced in the US at an annual rate of 2.2 million metric tons. They are used as industrial adhesives for products such as exterior plywood, Oriental strawboard, density fiberboard, plastic trim on car bodies, and plastic containers that hold air filters. They are resistant to attack by fungi and termites and are not biodegradable. They also cannot be melted or remolded, so most of them end up in landfills. Researchers in Wisconsin questioned whether lignin degraders, such as white rot fungi, could degrade the resins, which have a molecular structure similar to lignin. After trying several white rot fungi and a brown rot fungus (which attacks cellulose), they found one fungus (Phanerochaete chrososporium) that was able to break down the resins in a short time to a water-soluble material, from which the constituents of the resins could be recovered. Environmental Science and Technology 40: 4196-4199.

 

Plant Volatiles Affecting Plants

It is known that plant volatiles aid insect herbivores and their natural enemies in plant location, and in identity and condition. Although it has been suggested that similar volatil...

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Articles: Calochortophilia: A Californian’s Love Affair with a Genus by Katherine Renz

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