L-theanine extraction with supercritical CO2



Hi, Everyone!

Green tea is decaffeinated by supercritical CO2. L-theanine is one of
the most important components of green tea that acts antagonistically
to caffeine. It is a non-protein amino acid. Does anyone know if the
supercritical CO2 removes L-theanine with caffeine?

Thank You.
 
Looking at both molecules i would say it does.
The polarities of caffeine and L-theaine look similar and the difference in
molecular weight is not that big either- I think they would have similar
vapor pressures and solubility properties and thus be both extracted with
CO2 in one process.
Its just a guess though.

<[email protected]> schrieb im Newsbeitrag
news:[email protected]...
> Hi, Everyone!
>
> Green tea is decaffeinated by supercritical CO2. L-theanine is one of
> the most important components of green tea that acts antagonistically
> to caffeine. It is a non-protein amino acid. Does anyone know if the
> supercritical CO2 removes L-theanine with caffeine?
>
> Thank You.
>
 
I think that based on the structures, the mere fact that L-theanine is
an amino *acid* would exclude it from SFE.

>Looking at both molecules i would say it does.
>The polarities of caffeine and L-theaine look similar and the difference in
>molecular weight is not that big either- I think they would have similar
>vapor pressures and solubility properties and thus be both extracted with
>CO2 in one process.
>Its just a guess though.
>
><[email protected]> schrieb im Newsbeitrag
>news:[email protected]...
>> Hi, Everyone!
>>
>> Green tea is decaffeinated by supercritical CO2. L-theanine is one of
>> the most important components of green tea that acts antagonistically
>> to caffeine. It is a non-protein amino acid. Does anyone know if the
>> supercritical CO2 removes L-theanine with caffeine?
>>
>> Thank You.
>>

>