Hi,
I am a student of 12th.
I have been given an investigation project on "To study the effect of potassium Bisulphite as food preservative under various conditions (Jam)". I have to set up the experiment in lab and then have to write report.But I don't know anything about it,I didn't get anything from web search. If anyone knows about it,anything.. it will be helpful for me.

Google it !

Maybe something on the following sites will be of help to you.

GSFA Online Food Additive Details for Potassium Bisulphite (http://www.codexalimentarius.net/gsfaonline/additives/details.html?id=230)

GSFA Online Food Additive Group Details for SULPHITES (http://www.codexalimentarius.net/gsfaonline/groups/details.html?id=161)

GSFA Online Food Category 04.1.2.6 (http://www.codexalimentarius.net/gsfaonline/foods/details.html?id=65)