from this plant (Nessa et al, 2004). In Luodian county,
Guizhou province, the major producing area of BB, the local
farmers take the volatile oil from BB by steam distillation
(Jiang et al, 2006) and discard the waste residues ad libitum.
This causes both the waste of resources and the
environmental pollution.
In the ongoing research, we found the residues of BB
could ameliorate diabetes. To explore the potentiality, we
carried out assays to screen the active fractions hampering the
glucose absorption in vivo and in vitro. In this paper, we
report the active fractions screening results. The compounds
were all assayed to determine whether they could inhibit the
activity of α-glucosidase, and their inhibiting manner. So the
study could extend the application field of BB residues and
proper utilization of waste resource, and reduce the
environmental pollution as well.