EFFECT OF LIGHT ON SOLANINE SYNTHESIS IN THE POTATO TUBER

Abstract

Storage tubers were exposed for 20 days to light from either a Mazda lamp or a Cooper Hewitt mercury Arc in Uviol. Various spectral bands were segregated by Corning glass and inorganic solution filters. In comparisons of equivalent intensities the photosynthetically efficient bands were shown to be not efficient for solanine formation. U.-v. (max. ca. 0.3[mu]) was effective. Solanine was determined volumetrically from the copper-reducing value of the hydrolyzed extract.