Abstract
Wheat starches labeled with carbon-14 have been fractionated by a novel leaching procedure to give amylose, amylopectin, and a highly-branched minor fraction designated "amylopectin C". Marked differences in the specific activity of the fractions are found. Subfractionation of amylopectin also gives products of varying specific activity. These findings provide radiochemical evidence for heterogeneity in wheat starch.

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