In volatile oil of processed Cyperus, the contents of alkene and ketone compounds are more than those in unprocessed Cypreus, while the content of acid compounds is less than that of unprocessed Cypreus.

• 醋炙香附挥发油的主要成分中各种烯类、酮类化合物含量高于生品中的含量，而酸类化合物的含量低于生品中的含量。