Flowers, H.M., Department of Biophysics, The Weizmann Institute of Science, Rehovot, Israel
Ascher, K.R.S., Department of Toxicology, Agricultural Research Organization, The Volcani Center, Bet Dagan, Israel
Meisner, J., Department of Toxicology, Agricultural Research Organization, The Volcani Center, Bet Dagan, Israel

Spodoptera littoralis larvae were fed l-fucose mixed with sucrose, on Styropor lamellae, and their excretions were analysed by paper chromatography. Analysis of the main peak obtained showed that more than half of the fucose ingested was excreted as free fucose. This result was obtained both in experiments with radioactive fucose and by conventional chemical quantitation (silver nitrate method) of the peak. Two further peaks were shown by acid hydrolysis followed by sodium borohydride reduction to consist of fucose disaccharides and trisaccharides, respectively. © 1976.