Dear AxisOfBeagles:

On Jan 2, 12:37*pm, AxisOfBeagles > wrote:
> To the best of my knowledge, ozone is an excellent alternative to
> burning sulfur - but is not a treatment for a tainted barrel.

http://www.carlsenassociates.com/web...O3-Article.pdf

Seems like it can be a treatment for tainted barrels also.

David A. Smith

On Jan 2, 3:31*pm, dlzc > wrote:
> Dear AxisOfBeagles:
>
> On Jan 2, 12:37*pm, AxisOfBeagles > wrote:
>
> > To the best of my knowledge, ozone is an excellent alternative to
> > burning sulfur - but is not a treatment for a tainted barrel.
>
> http://www.carlsenassociates.com/web...O3-Article.pdf
>
> Seems like it can be a treatment for tainted barrels also.
>
> David A. Smith

Great link, thanks.

Joe

First, thank you for an excellent link. But I fail to see where the
article suggests that ozone is a treatment for tainted barrels, other
than the Fresno study showing that ozone killed a brett infection. If
the taint, as indicated in the OP, is a VA problem (such as an
acetobacter contamination) then I still find no indication that ozone
is a treatment for such.

I agree with the primary premise of the article - ozone is arguably the
most effective barrel sanitizer available, imaprts no taint of it's own
to the barrel, is environmentally less imapctful than many
alternatives, and seems to have no adverse impact on the qualities of
the oak that the winemaker desires. But other than the one study
regarding Brett, this article does not seem to suggest that ozone is a
treatment for barrel contaminations that result in VA in your wine.
Does it?



On 2008-01-02 12:31:45 -0800, dlzc > said:
>
> http://www.carlsenassociates.com/web...O3-Article.pdf
>
> Seems like it can be a treatment for tainted barrels also.
>
> David A. Smith

Dear AxisOfBeagles:

On Jan 3, 12:12*pm, AxisOfBeagles > wrote:
> First, thank you for an excellent link.

Actually, you can thank Google... ;>)

> But I fail to see where the
> article suggests that ozone is a treatment for tainted barrels,
> other than the Fresno study showing that ozone killed a
> brett infection. If the taint, as indicated in the OP, is a VA
> problem (such as an acetobacter contamination) then I still
> find no indication that ozone is a treatment for such.

The link specifically states that acetobacter is killed by ozone.

http://www.oxicom.es/eng/embotellado...o_barricas.php
http://www.icwt.net/conference/Ozone...ron%20Tapp.pdf
http://goliath.ecnext.com/coms2/gi_0...shing-hot.html
... (not pushing membership, nor can I read the entire article)
http://www.newworldwinemaker.com/art...ent.asp?id=159
http://www.blackwell-synergy.com/doi...ournalCode=fri
http://www.springerlink.com/content/t1299uj3g2n82562/

> I agree with the primary premise of the article - ozone is
> arguably the most effective barrel sanitizer available, imaprts
> no taint of it's own to the barrel,

... it can be a little hard on the natural epoxy binder. I remember
seeing a customer's installation that decided he did not need an ozone
destruct unit, and how his wooden shingles near the offgas vent looked
after two months...

> is environmentally less imapctful than many alternatives,
> and seems to have no adverse impact on the qualities of
> the oak that the winemaker desires. But other than the
> one study regarding Brett, this article does not seem to
> suggest that ozone is a treatment for barrel contaminations
> that result in VA in your wine. Does it?

See links above. Only one of which is actual peer reviewed
literature.

> >http://www.carlsenassociates.com/web...O3-Article.pdf
>
> > Seems like it can be a treatment for tainted barrels also.

Ozone only has difficulties with slime-forming, colony-forming
organisms.

A "soak" probably would not be advantageous, but a vigorous spray
should place high concentration ozone near the barrel wall.

http://www.bionewsonline.com/q/1/microbial_d.htm
... gaseous ozone and treatment of viable barley for fungus

http://www.asm.org/Media/index.asp?bid=42949
... even inactivation of "mad cow" prions with ozone (which surprised
the hell out of me).

Just can't ignore the ozone offgas.

David A. Smith