Hi all,

Im doing research on diacetyl whereby I am going to build a model in matlab
to predict whether the fermentation is bad based on the first 48-60 hours
using past datasets . I was wondering if anyone could send me information
regarding diacetyl or past work done on this subject. What is diacetyl
affected by during the course of fermentation... ie. I have data on yeast
generation number, time, temperature, specific gravity and VDK (diacetyl)
for 43 bach fermentations. Can anyone tell what links are between Specific
gravity and Diacetyl concentration.

I need to plot a graph of 'Time taken for diacetyl to be in spec. (i.e
below value of 0.1)' vs. 'steepest slope of SG curve'). Any idea on what I
should expect?

John

Can anyone help?



"john" <j.l.owens@blueyonder.co.uk> wrote in message
news:yFPae.145844$Nr5.122230@fe2.news.blueyonder.co.uk...[color=blue]
> Hi all,
>
> Im doing research on diacetyl whereby I am going to build a model in
> matlab to predict whether the fermentation is bad based on the first 48-60
> hours using past datasets . I was wondering if anyone could send me
> information regarding diacetyl or past work done on this subject. What is
> diacetyl affected by during the course of fermentation... ie. I have data
> on yeast generation number, time, temperature, specific gravity and VDK
> (diacetyl) for 43 bach fermentations. Can anyone tell what links are
> between Specific gravity and Diacetyl concentration.
>
> I need to plot a graph of 'Time taken for diacetyl to be in spec. (i.e
> below value of 0.1)' vs. 'steepest slope of SG curve'). Any idea on what I
> should expect?
>
> John
>[/color]

john wrote:[color=blue]
>
> Hi all,
>
> Im doing research on diacetyl whereby I am going to build a model in matlab
> to predict whether the fermentation is bad based on the first 48-60 hours
> using past datasets . I was wondering if anyone could send me information
> regarding diacetyl or past work done on this subject. What is diacetyl
> affected by during the course of fermentation... ie. I have data on yeast
> generation number, time, temperature, specific gravity and VDK (diacetyl)
> for 43 bach fermentations. Can anyone tell what links are between Specific
> gravity and Diacetyl concentration.
>
> I need to plot a graph of 'Time taken for diacetyl to be in spec. (i.e
> below value of 0.1)' vs. 'steepest slope of SG curve'). Any idea on what I
> should expect?
>
> John[/color]

John tery posting this on [url]www.brewandviews.com[/url]. There is at least one
poster there, by the name of Fredrik, who has done some work on
something similar.

---------->Denny
--
Life begins at 60 - 1.060, that is.

Reply to denny_at_projectoneaudio_dot_com

This link doesn't appear to work???


"Denny Conn" <me@privacy.net> wrote in message
news:1114462844.8296a6b4dca063f0dd9ffec27cb7dff5@teranews...[color=blue]
> john wrote:[color=green]
>>
>> Hi all,
>>
>> Im doing research on diacetyl whereby I am going to build a model in
>> matlab
>> to predict whether the fermentation is bad based on the first 48-60 hours
>> using past datasets . I was wondering if anyone could send me
>> information
>> regarding diacetyl or past work done on this subject. What is diacetyl
>> affected by during the course of fermentation... ie. I have data on yeast
>> generation number, time, temperature, specific gravity and VDK (diacetyl)
>> for 43 bach fermentations. Can anyone tell what links are between
>> Specific
>> gravity and Diacetyl concentration.
>>
>> I need to plot a graph of 'Time taken for diacetyl to be in spec. (i.e
>> below value of 0.1)' vs. 'steepest slope of SG curve'). Any idea on what
>> I
>> should expect?
>>
>> John[/color]
>
> John tery posting this on [url]www.brewandviews.com[/url]. There is at least one
> poster there, by the name of Fredrik, who has done some work on
> something similar.
>
> ---------->Denny
> --
> Life begins at 60 - 1.060, that is.
>
> Reply to denny_at_projectoneaudio_dot_com[/color]