Malic acid

john....@btinternet.com

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Oct 30, 2016, 6:47:28 PM10/30/16

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Hi all,

With reference to the Malic acid thread I have not seen any reference as to the ratio of Ph and quantity of cider, to the weight or volume of the malic acid, any ideas please?.

Thank you,

John H.

Jeff VanElverdinghe

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Oct 30, 2016, 7:29:18 PM10/30/16

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Hi John,

1 gram of malic will reduce the pH of 1 liter of cider by approximately 0.08.

Jeff V.

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john....@btinternet.com

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Oct 31, 2016, 7:19:40 AM10/31/16

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Thanks Jeff,

That is very helpful, I am sure it will help me a lot to get my cider better!

John H

----Original message----
From : jeff...@gmail.com
Date : 30/10/2016 - 23:29 (GMTST)
To : cider-w...@googlegroups.com
Subject : RE: [Cider Workshop] Malic acid

Tony Lovering

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Nov 18, 2016, 1:36:47 PM11/18/16

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Using your calcs if I started at 4.7 and wanted to get to 3.6 in 25 ltrs I would have to add 343 grams of malic acid!. I managed to do that with 100 grams

Cheers

Andrew Lea

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Nov 18, 2016, 1:47:43 PM11/18/16

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Please everyone understand that the relation between pH and acid
addition is NOT LINEAR. pH is a LOGARITHMIC QUANTITY.

The extent of pH change also depends on the buffering capacity of your
juice or cider which you do not know. It will differ in every situation.

Andrew

Tony Lovering

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Nov 21, 2016, 2:37:44 AM11/21/16

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Logarithmic? So to go from 4-3 you will need to add 10 times the mailic acid than you would to go from 3-2? or the other way around? Now iv'e typed it in its obvious lol

Cheers

Andrew Lea

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Nov 21, 2016, 4:44:07 AM11/21/16

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Acid vs pH has been covered here so many times. There's a page on my website and Claude also has a good essay in his book and on his website see http://cjoliprsf.ca/Documents/Acidity-pH.pdf