Showing papers on "Excoecaria agallocha published in 2001"

Anti-tumor-promoting activity of the diterpene from Excoecaria agallocha. II.

Abstract: Eight new diterpenoids (1-8) have been isolated from the wood of Excoecaria agallocha (Euphorbiaceae) and their inhibitory effects on the induction of Epstein-Barr virus early antigen (EBV-EA) in Raji cells were examined to search for potent anti-tumor-promoters from natural resources. Of these compounds, the secolabdane-type diterpenoid, compound 7 exhibited a remarkable inhibitory effect on EBV-EA induction, and a significant anti-tumor-promoting effect in the mouse two-stage carcinogenesis test using 7,12-dimethylbenz[a]anthracene and 12-O-tetradecanovl-phorbol-13-acetate.

Study on the species and ecological character of mangrove pathogenic fungi in Guangxi

Abstract: The species and ecological character of mangrove pathogenic fungi in three areas (Shankou,Qinzhou and the estuary of Beilun in Guangxi) are reported. Among fourteen genus twenty-six species(isolates)of mangrove pathogenic fungi that are mainly Colletotrichum,Pestalotiopsis,Alternaria and Phyllosticta were identified. And the richenss index(D MA )、species diversity index(H')and evenness index(J SW )of the identified pathogenic fungi species in three areas are 2 826 5～4 700 4、0 971 8～ 1 276 8 and 0 900 5～0 915 8 respectively. In Shankou,there are only twelve species,less than other two areas,so the D MA and H' are the minimun accordingly. Meanwhile,the most important character in the distribution of the mangrove pathogenic fungi is that the variety in high-tide land is more than that in low-tide land,and the most variety is found in the area round estuary. The pathogenic fungi infect chiefly the top of the mangrove plant. Diseases occur mostly on leaves,then on the tip of branch,and rarely on the root and stem. Most diseases occur on Aegicera corniculatum and Excoecaria agallocha,however,few diseases occur on Rhizophora stylosa and Acanthus ilicifolius.

BIOACTIVE SUBSTANCES OF MANGROVE Excoecaria agallocha AS SHRIMP DISEASES INHIBITOR

Abstract: Excoecaria agallocha mangrove species is suspected of having bioactive material which can be used as bacteriostatic agent, water nutrient stability and shrimp diseases reduction Hexane, acid ethyl acetate, neutral ethyl acetate, and water were used as solvents Chemical compounds of mangrove bioactive were classified by color reaction on TLC and identified by spectroscopic method The highest inhibition zone crude extract of bioactive mangrove toward several Vibrio sp from the shrimp ponds show that V mimicus are 1035 ± 005 mm at 10 µ L and 126 ± 005 at 20 µ L The highes inhibition zone produce by fraction Et-OAC neutral with V costicola are 183 ± 005 at 10 µ L and 239 ± 005 at 20 µ L Keywords : Bioactive, mangrove , bactericide

Edibleplantsand poisonousplantsin micronesia (1)poisonousplantsin yap

Abstract: Poisonous plants in Yap were surveyed by the literature. In total, there exist 15 poisonous plants as follows; Barringtonia racemosa Roxb., B. speciosa Forst., Callicarpa cana L., Cassia occidentalis L., Cycas circinalis L., Derris elliptica Benth., D. melaccensis Prain, Dioscorea bulbifera L., D. pentaphylla Hook.f., Excoecaria agallocha L., Leucaena glauca Benth., Ormocarpum sennoides DC., Pangium edule Reinw., Semecarpus venenosa Volkens and Tacca pinnatifida Forst. A few of these are very poisonous, and some of the rest are used as fish poison. Besides, there is a possibility that Laportea interrupta (L.) Chew is poisonous.