posted 10 years ago
http://www.wiley-vch.de/books/biopoly/pdf_v06/bpol6014_439_448.pdf
Article has a table. Sunchoke, Chicory and Dandelion all run in the teens, while yacon runs from 3 to nineteen. Looks like Camas is the champ, running from 12 to 22. I am presuming that the chart is reporting percentages, although I don't see it indicated in either the legend or the text.