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 Hey Tom, 
  
I don't know if you remeber our meeting in Corvallis last Nov. 
with Bruce.  In any case I do have experience using non preserved Yucca 
extract from Desert King.  It is a 50% concentration product.  They 
make it special order only as they normally include Sodium Benzoate.  
Unfortunately I have never tested my tea after the Yucca is in because I never 
add Yucca until the tea is in the application rig.  The biggest concern for 
non preserved Yucca is how long it will store.  I have stored my 
unpreserved for at least 8 months with no problems.  I order it in 5 gallon 
pales but they also ship in 1 gallon containers.  They will not ship in 50 
gal drums because of the risk of spoilage.  The key is to keep the lid 
closed and don't pour material back into the source container.  I hope 
this helps and provides additional resources for those who are interested.  
I agree with you that the small amount of Sodium Benzoate in a large volume 
of CT is not a problem;  but for the same cost if we can avoid it, why 
not? 
Regards, 
Jason Kimm 
  ----- Original Message -----  
  
  
  Sent: Monday, September 08, 2003 3:16 
  PM 
  Subject: [compost_tea] sodium benzoate 
  was Re: Fruit Club Update 
  
  I found the information I had previously read. It sounds 
  like once  this preservative hits our water at a pH of 7.5 it's rendered 
  useless  as an "icide". Although I have to admit that just because it's 
  in every soda pop (I  drink none!) doesn't make me feel good about 
  it.
  sodium benzoate NOUN:      The sodium 
  salt of benzoic acid, NaC7H5O2, used as a food  preservative, an 
  antiseptic, and an intermediate in dye manufacture  and in the production 
  of pharmaceuticals. Also called benzoate of  soda.  Sodium benzoate has 
  been used as a food preservative since the early  1900's.  It is 
  employed in a wide range of preservative applications  because of its 
  antimicrobial action combined with its low toxicity  and low taste.  
  It is most suitable when used in foods and beverages  with a pH of 4.5 and 
  below and is not recommended for use when the pH  exceeds 4.5.
  The 
  lower the pH level, the greater the effectiveness of sodium  benzoate on 
  yeasts, molds and bacteria.  At low pH levels, it may  impart a slight 
  tang if used at maximum concentration levels (0.1%).   To maximize its 
  effectiveness against enzyme formation, it is  recommended that it be added 
  at the earliest processing step possible.
  Sodium benzoate is widely 
  used in carbonated and non-carbonated  beverages, fruit and fruit juices, 
  syrups, jams and jellies, prepared  salads, tomato-based products 
  (including sauce, paste and salsa),  margarine, olives, pickles and other 
  condiments.  It also is used in  conjunction with fumaric acid and 
  boric acid for fish preservation.
 
 
 
 
  --- In 
  compost_tea@yahoogroups.com, "tomjasz" <tom@l...> wrote: > The 
  next question should be, what effect does the preservative have  > on 
  the end product. Tom Piatkowski will hopefully write some on the  > 
  effect. I believe Saponyn also has a preservative. I have used and  > 
  tested with ThermX70 and Saponyn and test results didn't show any  > 
  problem. Highland, I think, uses Saponyn in their ACT and has had  > 
  some of the most diverse teas brewed to date. I think we should  check 
   > the science here. Unfortunately the users of preservative free 
   Yucca   > haven't tested nor has the seller posted any test 
  results. >  >  >  > --- In 
  compost_tea@yahoogroups.com, Lmvine1@c... wrote: > > It may be OMRI 
  listed but in an e-mail from factory they said  they  > use a 
   > > preservative!! > >  E-mail below in 
  quotes. > > "We use 0.1% sodium benzoate as a preservative in the 
  Thermx-70.  > The percent  > > saponin in Thermx-70 is a 
  minimum of 20%, it is usally aroun 23%.  > If you have  > > 
  anymore questions feel free to call me at 1-800-327-0000. > > 
   > > Wilfredo Idolyantes > >  Customer Sales 
  &Service" > >  > > Dan
 
 
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