Shuimoliuyun (Talk | contribs) |
Shuimoliuyun (Talk | contribs) |
||
Line 347: | Line 347: | ||
side, the oxidation pathway and the right side, the reduction pathway. When Clostridium | side, the oxidation pathway and the right side, the reduction pathway. When Clostridium | ||
propionate uses lactic acid as a source of energy, one molecule of lactic acid produces | propionate uses lactic acid as a source of energy, one molecule of lactic acid produces | ||
− | one third of the molecule of acetic acid and 2/3 of the propionic acid | + | one third of the molecule of acetic acid and 2/3 of the propionic acid. In the |
production process of acetic acid, there will be four electrons and 4 protons generate, | production process of acetic acid, there will be four electrons and 4 protons generate, | ||
as well as offering ATP for bacteria to grow. The acryloyl CoA in the reduction pathway | as well as offering ATP for bacteria to grow. The acryloyl CoA in the reduction pathway | ||
Line 371: | Line 371: | ||
<div class="panel-body"> | <div class="panel-body"> | ||
3-hydroxy propionic acid (3-HP) is an important chemical intermediate, there are a number of patents have reported the methods | 3-hydroxy propionic acid (3-HP) is an important chemical intermediate, there are a number of patents have reported the methods | ||
− | of sugar conversion to 3-HP | + | of sugar conversion to 3-HP. And 3-HP has two functional groups, carboxyl |
and hydroxyl. It is possible to synthesize a variety of important chemical substances | and hydroxyl. It is possible to synthesize a variety of important chemical substances | ||
such as 1,3-propanediol, succinic acid through oxidation, dehydration and esterification | such as 1,3-propanediol, succinic acid through oxidation, dehydration and esterification | ||
Line 383: | Line 383: | ||
<br> Using 3-hydroxypropionic acid-related pathways to construct engineering bacteria | <br> Using 3-hydroxypropionic acid-related pathways to construct engineering bacteria | ||
− | to produce acrylic acid is a hotspot in recent years | + | to produce acrylic acid is a hotspot in recent years, but the yield is generally |
not high, partly because of the toxic side effects of acrylic acid on cells and, | not high, partly because of the toxic side effects of acrylic acid on cells and, | ||
on the other hand, the pathway is long, and the reaction requires vitamin B12 to | on the other hand, the pathway is long, and the reaction requires vitamin B12 to |
Revision as of 14:05, 1 November 2017