So far, more than 20 natural acridone alkaloids have been isolated from the citrus plant, and they are known to have various functions and bioactivities such as anticancer, antitumour, antivirus, antiproliferation and anti-malaria.

• 至今已从柑橘类植物中分离得到20多种吖啶酮生物碱，它们在抗癌、抗肿瘤、抗病毒、抗疟疾和抗白血病等方面有重要作用。