Killing Yeast

Killing Yeast

Post by OzWineKi » Thu, 09 Jan 2003 17:28:00



Has anyone ever tried using a solution of KMS & K-Sorbate in water, in
a small hand-pump spray bottle, and squirted over the surface of the
wine to kill-off most of the TOP FERMENTING yeast cells?

Just interested as to whether the proceedure has been tried before and
if it is successful in stopping/slowing primary fermentation?

Cheers,
Steve!

 
 
 

Killing Yeast

Post by Lum » Fri, 10 Jan 2003 02:02:06



Quote:
> Has anyone ever tried using a solution of KMS & K-Sorbate in water, in
> a small hand-pump spray bottle, and squirted over the surface of the
> wine to kill-off most of the TOP FERMENTING yeast cells?

> Just interested as to whether the proceedure has been tried before and
> if it is successful in stopping/slowing primary fermentation?

> Cheers,
> Steve!

Hi Steve,

Yes, I have tried the above technique several times with little success, but
here is a technique that was used in the Cucamona wineries 50 years ago.

Mix up a sulfite solution which will provide a 20 or 30 ppm SO2 addition to
the wine container.  Then carefully pour, dribble or spray all of the
solution over the surface of the infected wine.  The idea is to keep most of
the solution right at the surface of the wine where the film yeast lives.

This way, you can have several hundred ppm of SO2 near the film yeast for a
day or two.  Of course, the SO2 will mix by diffusion and the wine will have
a normal SO2 content after a week or so.

Regards,
lum

 
 
 

Killing Yeast

Post by Sha Z » Fri, 10 Jan 2003 07:40:10


why don`t you put some VODKA in a spray bottle & sanitize every thing
with it ???
 
 
 

Killing Yeast

Post by OzWineKi » Fri, 10 Jan 2003 10:02:37


Thanks Lum,

I'm trialing a simplified QUICK home-winemaking system which requires
only 1 rack. I have found a great Na/Ca blend bentonite which gives a
very compact lees in a short time, (about 1/2 regular wastage), and
have a very efficient Silica-Sol clarifying agent.

Just have to perfect the quick killing of yeast at SG 0.995 before
going too dry and without a rack. The spray pack seemed to me to be
the cheapest and best for even distribution - unless you have any
other ideas? Heres hoping that it will just work effectively on the
remnant yeast, on its way down through the must.

Cheers,
Steve!