michael94
Member
- Joined
- Oct 11, 2015
- Messages
- 2,419
speaking of hydrogenation
did you know if you hydrogenate glucose and fructose you get sorbitol and mannitol? ...
I wonder if hydrogenation of sugars is any way related to hydrogenation of fats. Or if its simply irrelevant. Any ideas? One issue I see is they use nickel catalyst to do the hydrogenation.
ok this is very important and no one talks about it outside of these research cliques
apparently sorbitol made with nickel or iron catalysts leak metals into the mixture
very big problem
probably why sugar alcohols made in this why can be a problem, possibly toxic
Carbon supported Ru catalysts as promising alternative for Raney-type Ni in the selective hydrogenation of d-glucose - ScienceDirect
this is huge, how can i contact ray about this or would someone be willing to send an email on my behalf I will compose the question. thx
did you know if you hydrogenate glucose and fructose you get sorbitol and mannitol? ...
I wonder if hydrogenation of sugars is any way related to hydrogenation of fats. Or if its simply irrelevant. Any ideas? One issue I see is they use nickel catalyst to do the hydrogenation.
Industrial synthesisEdit
Mannitol is commonly produced via the hydrogenation of fructose, which is formed from either starch or sucrose (common table sugar). Although starch is a cheaper source than sucrose, the transformation of starch is much more complicated. Eventually, it yields a syrup containing about 42% fructose, 52% glucose, and 6% maltose. Sucrose is simply hydrolyzed into an invert sugarsyrup, which contains about 50% fructose. In both cases, the syrups are chromatographically purified to contain 90–95% fructose. The fructose is then hydrogenated over a nickel catalyst into a mixture of isomers sorbitol and mannitol. Yield is typically 50%:50%, although slightly alkaline reaction conditions can slightly increase mannitol yields.[16]
ok this is very important and no one talks about it outside of these research cliques
apparently sorbitol made with nickel or iron catalysts leak metals into the mixture
very big problem
probably why sugar alcohols made in this why can be a problem, possibly toxic
Carbon supported Ru catalysts as promising alternative for Raney-type Ni in the selective hydrogenation of d-glucose - ScienceDirect
this is huge, how can i contact ray about this or would someone be willing to send an email on my behalf I will compose the question. thx