watermelonman
Cook
- Joined
- Aug 11, 2007
- Messages
- 70
Why does the red vinegar shelf at the store have a lead warning? How much lead are they talking about here? Should I be concerned?
YT2095 said:erm... I gotta ask, are we talking lead as in Pb element #82 here?
if so, Where does that come from??? it Has to be a contaminant from the process, elements DO NOT change from one to the other in a chem reaction of ANY sort unless it`s an Isotope (and I think that`s unlikely!).
__________________kitchenelf said:Well UB - that is the problem. I don't know and that can be a problem when posting something like this too. We need a bit more information. I would think it would be with certain labels who process their vinegar in certain vessels. I would assume they have to put this warning on their bottles?
kitchenelf said:YT - ................
Well UB - that is the problem. I don't know and that can be a problem when posting something like this too. We need a bit more information. I would think it would be with certain labels who process their vinegar in certain vessels. I would assume they have to put this warning on their bottles?
Andy M. said:I found the following at this site:
Cider vinegar. The cider is placed in barrels (with their bung holes open) which are exposed during the summer to the heat of the sun. The acetification is completed in the course of about two years. The process of the fermentation, however, must be watched, and as soon as perfect vinegar is formed, it should be racked off into clean barrels. Without this precaution, the acetous fermentation would run into, the putrefactive, and the vinegar spoil. Cider vinegar contains no aldehyde. It contains malic acid, and therefore yields a precipitate with lead acetate. The absence of such a precipitate indicates that the alleged cider vinegar is a manufactured substitute, although a fictitious article might yield a similar precipitate.
keltin said:...It seems it is the vessel that is to blame. Vinegar that has been aged in a barrel or some other suitable container would not have lead in it...
Andy M. said:Keltin, if you go back and read the section I posted, they discuss cider vinegar in barrels and that the precipitation of a lead compound as a natural process because of the presence of malic acid...