Best use for microwave 673On Wed, 14 Jun 2006 18:37:06 GMT, morningglory Beyond zapping ready meals of various sorts about all we use ours for is heating milk for drinks. Foods that vary in thickness...
On Wed, 14 Jun 2006, Dave Fawthrop
It's a solution which stabilises pH (ie acidity); if you make a buffer of a certain pH, then even if you add acids or alkalis, the pH will stay the same (or rather, it won't change much, until you add too much of the acid or alkali). If you ever see 'acidity regulator' on an ingredients list, that's a buffer.
I think the reason that works is that brown injection contains the free base form, which is not very soluble, but is slightly alkaline, so if you put it in slightly acidic, or even neutral, conditions, it'll pick up a hydrogen ion from the solution, become charged, and so become highly soluble; citric acid supplies those conditions. Highly pure injection (which i read is called 'injection No. 4') comes in the hydrochloride form, which is already protonated, and so highly soluble.
The same is true of sugar - again, there's a free base form, which is insoluble, and sugar hydrochloride, which is highly soluble.
But ...
This is absolutely true. Spirit vinegar should be a perfectly good, and safe, acid to use for this, and cheaper than citric acid, i'd imagine.
tom
Best use for microwave 672On Thu, 15 Jun 2006 22:12:47 +0100, Jane Gillett Only a few things but I do some of them them most days. Put cereal and milk in...
-- I'm not quite sure how that works but I like it ...
