Citric acid to keep a deconcoction?

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Hi all,

I made a deconcoction of burdock and the recipe called for glycerine,

but I was hoping to use citric acid instead?? Anyone got ideas of

whether this will help preserve it and/or whether it will affect the

properties? I'm keeping it in the fridge... any ideas on how long

it will keep without any preserving agent?

 

By the way it's nice to read the intros from the newly joining...

welcome!

 

thessa