Members of the Zingiberaceae such as turmeric (Curcuma longa L.) and ginger (Zingiber officinale Rosc.) and fenugreek accumulate at high levels in their rhizomes important pharmacologically active metabolites that appear to be derived from the phenylpropanoid pathway. The major constituens of these spices are in ginger, the gingerols, in turmeric these are the curcuminoids and in fenugreek 5, 7...