Besides vitamin B17, fruits are also alkaline. "An apple a day keeps the doctor away". Here is a list of alkaline foods, also in cancer treatment there is a high alkaline diet.
http://www.trans4mind.com/nutrition/pH.html
http://www.essense-of-life.com/info/foodchart.htm
http://www.liferesearchuniversal.com/acid.html
It's not the first time I heard about alkaline and acidic foods and their effects. I have a book from 1970 there is a doctor there who talks about the same thing
I am not a doctor, I don't know more, I will remain at these, it's not complicated to have a healthy diet.
$this->bbcode_second_pass_quote('', '"')Note that a food's acid or alkaline-forming tendency in the body has nothing to do with the actual pH of the food itself. For example, lemons are very acidic, however the end-products they produce after digestion and assimilation are very alkaline so lemons are alkaline-forming in the body. Likewise, meat will test alkaline before digestion but it leaves acidic residue in the body so, like nearly all animal products, meat is classified as acid-forming. "