Kombinasi Ekstrak Metanol Daun Ketepeng Cina (Cassia alata Linn.) dengan Enam Ekstrak Tumbuhan Terpilih dalam Menghambat Pertumbuhan Bakteri Staphylococcus aureus

This study aimed to determine the antibacterial activity and the effect of the combination of methanol extract of the leaves of Chinese ketepeng (Cassia alata Linn.) with six selected plant extracts against Staphylococcus aureus bacteria. The method used is well diffusion and paper tape method. The concentration of the test extract was 100 mg/mL (1:1), DMSO 50% v/v was used as a negative control and the antibiotic clindamycin as a positive control. The results showed that most of the combinations of the methanol extract of the Chinese ketepeng leaf (C. alata) with the six selected plant extracts produced an average diameter of the inhibition zone, which was greater than the average diameter of the inhibition zone of every single extract. However, the average diameter of the combined inhibition zones was not more significant than the sum of the average diameters of the inhibition zones of every single extract. In conclusion, the combination of the methanol extract of the Chinese ketepeng leaf (C. alata) with six selected plant extracts had additive/indifferent effects in inhibiting the growth of S. aureus.  Keywords: Antibacterial, Cassia alata Linn, Combination, Staphylococcus aureu

UJI AKTIVITAS ANTI RAYAP EKSTRAK METANOL BIJI KAYU SENTANG (Azadirachta excelsa (Jack) Jacobs) TERHADAP RAYAP Coptotermes curvignathus Holmgren

Penelitian ini bertujuan untuk menentukan aktivitas termitisida ekstrak metanol biji kayu sentang (Azadirachta excelsa (Jack) Jacobs.) terhadap rayap Coptotermes curvignathus Holgren menggunakan metode no choice test, dan penentuan komponen kimia menggunakan GC-MS. Hasil uji aktivitas termitisida diperoleh pesentase kematian rayap meningkat seiring dengan naiknya konsentrasi yang diberikan, konsentrasi 5% menyebabkan kematian rayap mencapai 100% pada hari ke-3. Kata Kunci : Ekstrak metanol, biji kayu sentang, (Azadirachta excelsa (Jack) Jacobs.), rayap Coptotermes curvignathus Holgre