The significant correlation (r = 0.81, P > 0401) between
IDF and RS contents suggested that some of the starch
in the potato samples had become indigestible by amylolytic
enzymes after cooking, and this could cause the
observed increment in the IDF fraction. It appears that
previously reported data on DF of heat-treated foods
could possibly have been overestimated. It is therefore
essential to redefine DF and to decide whether or
not RS should be included in DF for food labeling.
Perhaps, the main concern of this presently controversial
issue may be that it could create an incentive for
food manufacturers to explore possible ways for raising
levels of RS in processed foods as a means of generating
extra ‘dietary fiber