Preliminary Screening of some Plant Extracts for Molluscicidal Activity

Abstract

A Colony of Bulinus (Ph~opsis) globosus has been established in our laboratory for testing for molluscicidal activity in Nigerian medicinal plants. The snails were established with slight modification of the method of M~C L~. I . L A N I ) [7]. 181 plant extracts employed in Nigerian herbal medicine were screened for molluscicidal activity following the W.H. 0. method [ I ] with laboratory reared snails of known age. Only 23 (12.7 %) of these plant extracts, however, showed 100 % mortatility to the snails at a concentration of I00 ppm of extract.

A study of the larvicidal and molluscicidal activities of some medicinal plants from northeast Brazil

“…With respect to molluscicidal activity, extracts from the leaves of Kigelia africana (Adewunmi and Sofowora, 1980) and Dysoxylum lenticellare (Aladesanmi and Adewunmi, 1995) possess activities similar to that reported here for the wood bark extract from Marsdenia altissima. On the other hand, extracts from the roots of Jatropha gossypiifolia (LC 90 35 ppm; Adewunmi and Adesogen, 1986) and Annona squamosa (LC 90 8.6 ppm; dos Santos and Sant'Ana, 2001) and from the latex of Euphorbia milii (LC 50 0.12 ppm; Oliveira-Filho and Paumgartten, 2000) have reported activities that are much higher than that of the most active extract described in the present study (i.e.…”

Anti-inflammatory and hypoglycaemic effects of Tetrapleura tetraptera (Taub) [fabaceae] fruit aqueous extract in rats

“…Tetrapleura tetraptera fruit has been reported to contain many chemical compounds, including: triterpenoid glycoside (aridanin), coumarins, flavonoids and other phenolic compounds (Adewunmi andMarquis, 1981, 1987;Adewunmi, 1984;Adewunmi and Sofowora, 1980;Adesina and Reisch, 1985). However, the exact chemical constituent/s of the fruit that is/are responsible for the observed anti-inflammatory and hypoglycaemic effects of the plant extract still remain/s speculative.…”

“…Several investigators have shown that phenolic compounds (e.g., tannins, coumarins and flavonoids), triterpenoids and a host of other secondary plant metabolites possess anti-inflammatory and hypoglycaemic effects in various experimental animal models (Gupta et al, 1969;Dongmo et al, 2003;Taesotiku et al, 2003;Ojewole, 2002;Adzu et al, 2003;Akah and Okafor, 1992;Marles and Farnsworth, 1995). Since the fruit of Tetrapleura tetraptera contains triterpenoid (aridanin), coumarin (scopoletin) and flavonoids (Adewunmi andMarquis, 1981, 1987;Adewunmi, 1984;Adewunmi and Sofowora, 1980;Adesina and Reisch, 1985), it is not unlikely that these compounds might have contributed largely to the observed anti-inflammatory and hypoglycaemic effects of the plant's fruit aqueous extract.…”

“…The fruit possesses a fragrant, characteristically pungent aromatic odour, which has been attributed to its insect repellent property. In Nigeria and some other tropical African countries, the nutritional, molluscicidal and other ethnomedical properties of extractives from the plant's fruit have been reported (Adewunmi andMarquis, 1981, 1987;Adewunmi, 1984;Adewunmi and Sofowora, 1980;Adesina and Reisch, 1985).…”

Konsorsium Tumbuhan Anti Moluska Untuk Mengendalikan Keong Mas Hama Tanaman Padi

“…Dalam pencarian molusisida tumbuhan yang efektif dan selektif, ada empat kecenderungan yang dapat diidentifikasi: Tumbuhan digunakan dalam bentuk ekstrak atau ditempatkan langsung dalam habitat siput: bahan aktif diidentifikasi dan diisolasi; bahan tumbuhan diperiksa lebih lanjut untuk menentukan stabilitasnya di bawah kondisi fisiokimia lapangan dan toksisitasnya terhadap siput sebagai organisme sasaran dan terhadap organisme lainnya yang bukan sasaran pengendalian (Kloos & McCullough, 1987). Karaktersitika yang digunakan sebagai dasar pemilihan tumbuhan sebagai sumber molusisida adalah meliputi (Adewunmi & Sofowora, 1980;Hamburger & Hostettmann, 1991).…”