Planta Med 2006; 72 - P_012
DOI: 10.1055/s-2006-949812

Flavonoids and insecticidal activity of Teucrium zanonii

KA Abdelshafeek 1, IA Ismail 2, MA Alwahsh 1
  • 1ALTahady University, Faculty of Science, Chemistry dept, Sirt, Libya p.o.674
  • 2National Research Center, pests and plant protection dept, Dokki, Cairo, Egypt

In frame of our investigation for medicinal Libyan plants we choose Teucrium zanonii Pamp. (Family Labiatae) which is an endemic plant growing in Abofakhra region (25 Km from Benghazi City) [1]. The plant was used in folk medicine for gastrointestinal troubles, tonic, renal inflammatory and antidiabetic [2]. Investigation of the flavonoidal constituents lead to the identification of ciriliol, luteolin, chrysoeriol, and xanthomicrol from the ethyl acetate fraction while apigenin –6,8– di-O-glucoside and Luteolin –7– O – rutinoside from the butanol fraction. All structures were established using different chromatographic and spectroscopic (UV,MS, FAB-MS, 1H,13C-nmr) measurements [3]. The insecticidal activity measurements of different extracts against Phloeotribus oleae on olive trees showed that, the aqueous extract exhibit the highest mortality in the lab. and field experiments (86.67% and 70.82) respectively [4].

References: 1. Siddiqi, M.A. (1985), Flora of Libya, Vol. 118: Lamiaceae. Revolution printing press, Tripoli, Libya. 2. Assem, M.E., Karam, T.H. (2004), Biochem. Syst. Ecol. 32: 665–674. 3. Savona, G., Paternostro, M.P, et al. (1979), An. Quim. 75: 433–436. 4. Bruno, M., Piozzi, F. et al. (2002) Biochem. Syst. Ecol. 30: 595–599.