Abstract
The carbohydrate composition of hydrol, obtained from sweet potato starch was analyzed and the sugar component of hydrol were fractionated by carbon column chromatography. Glucose, levoglucosan, scphorose, sakebiose, maltose, cellobiose, isomaltose and gentiobiose were isolated and identified by means of their crystalline sugars or acetic derivatives. Further trehalose, kojibiose and laminaribiose were identified by a paper chromatography and sugar-borate paper ionophoresis.