[compost_tea] Re: Why There are Spores in Peat - Pasteurization vs. Sterilization

From: dkemnitz2000 <dkemnitz2000_at_yahoo.com>
Date: Thu, 06 Nov 2003 03:49:31 -0000

--- In compost_tea_at_yahoogroups.com, "chriscreid" <reidchris_at_e...>
wrote:
> Only recently did I get clear about the difference between
> pasteurization and sterilization, while surfing through some
> mushroom farming sites. Here's a quote that encapsulates the
> difference:
>
> The pasteurization is carried out for a prolonged time at around
170°
> F and is supposed to kill only heat susceptible organisms and their
> spores, while sterilization works at a temperature of 250°F and is
> supposed to kill all organisms.
> The beneficial microorganisms(mainly bacteria)that are left alive
> when pasteurizing, guard the substrate against other contaminants,
> for instance different molds, but don't affect the growth of
> mushroom mycelium.
> Pasteurization is used for bulk substrates like straw, dung and
> composts and wood chips, also casings, and

Chris I don't understand this part below as I've never heard of
sterilizing grains. Dennis Kemnitz



sterilization for all
> high nutritious substrates, like different grains.
>
> This info is from:
>
> http://www.shroomery.org/index/par/23371
>
> Chris Reid


------------------------ Yahoo! Groups Sponsor ---------------------~-->
Buy Ink Cartridges or Refill Kits for your HP, Epson, Canon or Lexmark
Printer at MyInks.com. Free s/h on orders $50 or more to the US & Canada.
http://www.c1tracking.com/l.asp?cid=5511
http://us.click.yahoo.com/mOAaAA/3exGAA/qnsNAA/0PSxlB/TM
---------------------------------------------------------------------~->

To unsubscribe from this group, send an email to:
compost_tea-unsubscribe_at_yahoogroups.com

 

Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/




Received on Thu Nov 06 2003 - 02:50:26 EST

This archive was generated by hypermail 2.3.0 : Tue Feb 07 2012 - 14:14:50 EST