Green Options » E. coli

Agricultural Waste Can Clean up Nuclear Waste, Researchers Find

Susan Kraemer — Fri, 18 Sep 2009 18:04:08 +0000

Waste uranium can apparently be recovered very cheaply from the polluted runoff from uranium mining using E. Coli and a phosphate storage molecule found in seeds, British researchers have found. They used the common bacteria with a chemical parallel of what is already found in agricultural waste: inositol phosphate.

Inositol phosphate is insoluble, so it forms a precipitate on the bacteria. The E. Coli then broke down the precipitate; releasing the phosphate molecules which then attached to uranium molecules to form uranium phosphate, which can then be harvested to recover the uranium.

What they have developed is a way for one contaminant to clean up another.

Read more of this story »

Micro-Organisms Can “Predict” Enviro Changes, Proving Basic Assumptions Wrong

Michael Ricciardi — Tue, 28 Jul 2009 19:15:58 +0000

Scanning electron micrograph of Escherichia coli

Using two different model organisms–the E. coli bacterium and the single-celled yeast–scientist have begun unraveling a puzzling behavior of many micro-organisms: the ability to “predict” a change in environmental conditions.

It has been assumed for most of the history of micro-biological science that such micro-organisms are purely “reflexive”; they simply respond and adapt to external stimuli (such as exposure to chemicals, heat stress, or drugs). But research over he past 2 years by two different scientific teams (a Princeton team lead by Saeed Tavazoie, and, a team from the Weizmann Institute in Israel) is shaking up present understanding and over-turning basic assumptions.

Read more of this story »

Food Policy Friday: FDA to Conform to EPA Standards for E.Coli in Bottled Water

Gina Munsey — Fri, 05 Jun 2009 17:55:00 +0000

Drinking water poses a threat due to possible perchlorate contamination and BPA leaching from plastic, but it seems reasonable to assume that in the United States, bottled water is free from fecal matter. Yet until now, there were no requirements to test source water — 70% of which comes from the the same place as tap water.

Beginning December 1st, “bottled water containing E. coli will be considered adulterated,” says the US Food and Drug Administration. You don’t say? It doesn’t seem as though we’d need a press release to tell us that, but this is the FDA we’re talking about.

Read more of this story »

Man-Made Bacteria Produces a Fuel That’s Better Than Gas

Nick Chambers — Tue, 09 Dec 2008 17:22:01 +0000

Researchers reported Monday that they have re-engineered a common bacteria to produce complex and energy-dense alcohols similar to the hydrocarbon compounds found in fuels such as gasoline. This is the first time these types of alcohols have been synthesized by bacteria (man-made or otherwise) in the lab.

E. coli is normally found in the guts of most warm-blooded animals (yes, even yours) and if you’ve had an encounter with it that you remember, chances are you spent the weekend on the toilet wishing you were dead. Yet, while it’s true that some strains of e. coli can cause food poisoning in humans, most are actually quite harmless.

Read more of this story »

Genomatica Turns Bacteria Into Plastic

Adam Williams — Fri, 26 Sep 2008 11:02:53 +0000

Scientific American reports that like so many elements in the world, it’s all in the use and volume for whether that something, say poison or E. coli, is a friend or foe: “Escherichia coli (E. coli) can give you a severe case of food poisoning or, with a little genetic engineering, a useful plastic.”

San Diego-based scientists at Genomatica have developed the ability to manipulate bacteria into being useful to feed our societal lust for plastics, by producing “butanediol (BDO), a chemical compound used to make everything from spandex to car bumpers, thereby providing a more energy-efficient way of making it without oil or natural gas,” the article says.

Read more of this story »

ZapRoot: BPA Declared Baby Safe, Thanks FDA!

Jeff McIntire-Strasburg — Thu, 18 Sep 2008 20:00:21 +0000

This post contains additional media. Click here to view the full post.

This week from our friends at ZapRoot: The FDA needs to have their heads examined. We respond to the numerous Chinese comments. Explore the world through Google Earth’s Environment section.

This week’s show links:

Eco Child’s Play - CA Fails to Pass Chemical Ban in Baby Products
Eat Drink Better - FDA Allows Producers to Irradiate Spinach & Lettuce
BPA Opinions
Corn Syrup All Natural
Google Earth Environment

Genomatica Develops Method to Replace Oil in Plastic-Making Process

Ariel Schwartz — Wed, 17 Sep 2008 00:41:25 +0000

Genomatica, a San Diego-based sustainable chemical company, announced today that it has developed a process to make an important component of plastic without the use of petrochemicals.

The chemical, 1,4-butanediol (BDO), has an annual production value of over $4 billion in the automotive, textile, and consumer goods industries.

Read more of this story »

In Praise of Poop 2: E. coli Waste as a New Form of Biofuel

Justin Van Kleeck — Sat, 16 Aug 2008 12:00:37 +0000

Now that we have picked apart the many hidden wonders of cow manure, we may safely examine yet another, more recent entry in the annals of excellent excrement: E. coli.

Believe it or not, E. coli may actually be useful for something other than infecting spinach or beef, giving you a serious case of diarrhea, and initiating massive recalls of different food products. The waste of these reputedly nasty little bacteria can, in fact, be used as a source for biofuel. No…er, joke.

As CNN reported recently, a biotech lab in San Francisco, LS9 Inc., is using a harmless form of E. coli to make biodiesel. The genetically altered bacteria get fed various forms of sugars, anything from sugar cane to wood chips or other plant waste, and after munching their little mitochondria out (they do not have hearts, after all), they poop the equivalent of diesel fuel.1 Now that is some exciting excrement!

Read more of this story »

Iowa Flood Waters Contaminated

Sarah Pressman Lovinger — Wed, 02 Jul 2008 13:21:07 +0000

I am still waiting to hear back from a spokeswoman at the USDA to find out the answer to the question I posed last week: who is in charge of protecting us from crops affected by flood water? In the meantime, I got an alert from the Centers for Disease Control about contaminated water in Iowa. I can tell you, dear reader, that while you may not want to eat food grown along flooded riverbeds, you most definitely do not want to walk in that water, particularly if you have open sores or cuts on your feet and legs. Exposing a sore on your skin to contaminated water puts you at risk for a nasty infection.

Read more of this story »