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Author Topic: Photosynthesis of biofuels  (Read 1157 times)
Phoenix
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« Topic Start: March 01, 2008, 03:36:05 pm »

I was thinking ...

If plants can convert carbon dioxide and water into sugar by photosynthesis, and yeast can convert sugar to alcohol by fermentation; would it not be possible for GM bacteria to convert carbon dioxide and water directly to alcohol by photosynthesis?
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« Reply #1: March 01, 2008, 04:40:14 pm »


You know that is an interesting question, those two elements are widely available. Heck, you could actually just use a glucose of some sort (pretty readily available) and water. The only problem is restricting that bacteria just to the tanks you want it in, or if it got out make it non viable, but that really shouldn't be too difficult.

Edited To Add: I see you mentioned the photosynthesis thing, maybe it would be possible to make two organism that are mutually dependent on each other. One makes the glucose, the other the alcohol.
« Last Edit: March 01, 2008, 04:42:07 pm by nigel » Logged

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« Reply #2: March 01, 2008, 04:49:54 pm »

you could actually just use a glucose of some sort (pretty readily available) and water.
Yes, fermentation.
What I'm trying to do is by-pass the sugar stage and go directly to alcohol

Quote
The only problem is restricting that bacteria just to the tanks you want it in, or if it got out make it non viable, but that really shouldn't be too difficult.
A lot of times the will use a "suicide gene" to kill an organism if it escapes from the lab
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« Reply #3: March 01, 2008, 04:55:00 pm »


I'm thinking the sugar is a needed part of fermentation, so you could either have a bacteria that made sugar then alcohol or two organisms one making sugar the other alcohol.
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« Reply #4: March 01, 2008, 11:11:24 pm »

I'm thinking the sugar is a needed part of fermentation, so you could either have a bacteria that made sugar then alcohol or two organisms one making sugar the other alcohol.

Yes, glucose is needed, as without glucose, glycolysis would never be able to break down the sugar into pyruvate.  Once pyruvate is formed, it releases a molecule of CO2, to become Acetaldehyde.  The Acetaldehyde is reduced by NADH to Ethanol, then the NAD+ can continue the glycolysis cycle.
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« Reply #5: March 02, 2008, 10:25:37 am »

I was thinking ...

If plants can convert carbon dioxide and water into sugar by photosynthesis, and yeast can convert sugar to alcohol by fermentation; would it not be possible for GM bacteria to convert carbon dioxide and water directly to alcohol by photosynthesis?

Apparently you are not the first to think of this.

 Famed geneticist creating life form that turns CO2 to fuel

MONTEREY, California (AFP) - A scientist who mapped his genome and the genetic diversity of the oceans said Thursday he is creating a life form that feeds on climate-ruining carbon dioxide to produce fuel.

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Phoenix
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« Reply #6: March 02, 2008, 03:11:12 pm »

Apparently you are not the first to think of this.
And I used to live just across the bay from Monterey ....
Must be something in the water
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