The dried rhizomes of Indonesian ginger, Zingiber officinale, were inv
estigated for antirhinoviral activity in the plaque reduction rest. Fr
actionation by solvent extraction, solvent partition, and repeated chr
omatography guided by bioassay, allowed the isolation of several sesqu
iterpenes with antirhinoviral activity. The most active of these was b
eta-sesquiphellandrene [2] with an IC50 of 0.44 mu M vs. rhinovirus IB
in vitro.