Abstract
The various free sugars of Mutugoro and Warasubo inhabited in Ariake Bay were determined by thin layer chromatography (TLC) with microcrystalline cellulose i. e. Avicel SL. Sugars were determined by the new quantitative method (TLC-gallic acid). Four kinds of sugars (glucose, fructose, galactose and xylose) were detected in the extract from Mutugoro. But galactose, fructose and xylose were not found in Warasubo.