Abstract
Effect of administration of 4G-β-D-galactosylsucrose (lactosucrose: LS) on breath hydrogen excretion and abdominal symptoms after ingestion of lactose were investigated. Ten lactose-intolerant volunteers were administrated 5g of LS daily for 7 days before and after lactose ingestion test (lactose 20g). The breath hydrogen excretion after ingestion of lactose was decreased by LS administration. Abdominal symptoms, such as abdominal pain, borborysmus and abdominal distension, after lactose ingestion were alleviated by LS administration. Thus it was revealed that administration of LS effectively prevented abdominal symptoms in lactose-intolerant subjects.