ASCORBIC ACID FORMATION IN POTATO TUBER SLICES

Abstract
Ascorbic acid content of potato tuber slices, detd. by the indophenol and dinitrophenylhydrazine methods, increased 2-3 times in 48 hrs. in properly aerated aqueous media. Fluoride and iodoacetate caused parallel inhibition of ascorbic acid synthesis and anaerobic CO2 evolution, while 02 consumption and aerobic CO2 evolution were less sensitive. It is proposed that ascorbic acid is synthesized by an L-triose by-pass of normal glycolysis.