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"Teiah dilakukan pemeriksaan •toksisitas 18 ekstraketanol dari 4 tumbuhan pengganggu dan 6 bakauyang diduga dapat dimanfaatkan sebagai obat.. Pemeriksaantoksisitas ekstrak dengan dosis 1 mg/mi dan0,1 mg/ml ditentukan inenurut metode Meyer yang dimodifikasimenggunakan Artemia saUna Leach benumursatu minggu. Pengamataniumiah Artemia sauna Leachyang mati dengan dosis ekstrak 1 mg/ml di].akukansetiap 30menit selama 6 jampertama dan pada jamke 24 seteiah pemberian - ekstrak. Sedangkan untukdos is 0,1 mg/ml diamati setiap jam selama 6 jampertama dan pada jam ke 24 seteiahpembenian ekstrak.Hasi]. pengamatan menuniukkan ada 4 ekstrakyang menyebabkan 95 % kematian, i1 ekstrakmenyebabkanprosentasi kematian antara 10 - 86%, sedangkan3 ekstrak tidak rnenyebabkan kematian.

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Toxicity studies were performed on 18 ethanol-

Ic extracts of 4 weeds arid '6 mangrove plants which

were believed to be active as medicines using a urndif

led Meyer's methode. One week oldArtemia sauna

were exposed to plant extracts of 'l mg/ml and 0,1

mg/ml for 24 hours.Observations were done by counting

the number Of death shrimps each 30 minutes In

the-first 6 hours and after 24 hours for extracts

of 1 mg/ml and every hour in the first 6 hours and

after 24 hours for extracts of 0,1 mg/ml.-The resuits

showed that . 4 extracts caused 95% killed, 11

extracts caused 10 - 86% killed and 3 extracts did

0 not show any effect."

"Telah dilakukan penelitian pendahuluan uji toksi.sitas21 ekstrak etanol dari 20 tanaman. yang diduga mempunyi. khasiat, menggunakan metode Meyer yang dimodifikasi.Sebagai hewan percobaan digunakan Artemia sauna Leachumur 7 han. Dosis pemeriksaan adalah 100 dan 1000 ug/ml dengan pengamatan setiap jam pada 6.. jam pertama dan 24j'axn setelah penambahan ekstrak.Hasil pengamatan menunjukkan peningkatan prosentasekematian dengan bertambahnya dosis dan lamanya waktu kontak.

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A preliminary toxicity study was performed on 21 e -

thanolic extracts of 20 plants, which were known to be active,

using a modified Meyer's method. This study involved

exposing one week old Artemia sauna Leach to plant ex -

tracts of consentrations of 100 and 1000 ug/ml for 24 hours.

Observations were done by counting, the number of death

shrimp each hour in the first 6 hours and after 24 hours.

The percentage of death shrimp increased . with higher

extract concentration and longer length of exposure."