Jerusalem artichoke tubers were washed and sliced with a slicing instrument. One part of the sliced tubers were dried in an oven at 80 C until they reached a constant weight. Another part of
the sliced tubers were immediately freeze dried. The two types of dried samples were ground to a fine powder using laboratory grinder and were sieved through a 0.2 mm sieve to produce JAP
(ovenedried powder “ODP” and freeze-dried powder “FDP”) (Supplementary-material 1