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RE: [new_distillers] 1st time at distilling(2)

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  • Tony & Elle Ackland
    Jack, ... Its not normally the vitamins that limit the growth of the yeast, its the amount of nitrogen (freely available nitrogen, FAN) which is in short
    Message 1 of 2 , Feb 2, 2001
      Jack,

      >Regarding the nutrients that is required for the brew?

      Its not normally the vitamins that limit the growth of the yeast, its the
      amount of nitrogen (freely available nitrogen, FAN) which is in short
      supply. Ammonium ion is the prefered source, and is generally used as the
      sulfate and phosphate salts. You require about 100 mg/L of FAN.

      The two other most important nutrients are phosphorus and sulfur.

      A typical way of getting these is through using a suitable yeast extract,
      which have about 28 to 45 mg of free amino acid nitrogen per gram.

      For some recipes to make your own nutrients, see :
      http://www.geocities.com/kiwi_distiller/wash-sugar.htm#nutrient

      Also remember to look after the acidity of the wash too (the pH)


      >PS does anyone know to attach a photo or file to this post??

      using Outlook, I do Insert-File.
      You can also upload them to the "new distillers" site at YahooGroups, if
      its too big to nicely send to everyone.

      Tony
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