Breast cancer is one of the main causes of death in women. Cancer treatment with surgery, chemotherapy, and radiology often cause undesirable side effects. Therefore, alternative cancer treatment by using plants as traditional medicine was expected to reduce side effects. Nigella sativa is one of the plants used as anticancer empirically. This study conducted to examine the cytotoxic activity of Nigella sativa seeds and identify its components on T47D breast cancer cells. Petroleum ether, chloroform, ethyl acetate, and ethanol were used to extract N. sativa seeds. The extracts were tested their cytotoxic activity on T47D cell line using MTT method. The active compound was separated using column chromatography. Cytotoxic test on T47D cell line was perform for extracts of each separation stage. Data were analyzed by probit analysis to obtain IC50 values. Components identification was performed using GC-MS analysis. The results showed that chloroform extract has cytotoxic activity better than other extracts with IC50 of 124.206 µg/mL. The third fraction has cytotoxic activity better than other fractions with IC50 of 68.568 µg/mL. The GC-MS analysis showed that in the third fraction of the chloroform extract contain linoleat acid, the major compound and tryptamine.

ABSTRAKTelah dilakukan penelitian uji aktivitas antioksidan ekstrak daun kalba pada pelarut nheksana, etil asetat dan metanol serta mengidentifikasi golongan senyawa metabolit sekundernya. Hasil maserasi diperoleh ekstrak n-heksana (E1), etil asetat (E2) dan metanol (E3) daun kalba berbentuk pasta dengan rendemen masing-masing ekstrak adalah 2,49, 5,08 dan 5,32% (b/b). Uji aktivitas antioksidan E1, E2, E3 memiliki nilai ES 50 masingmasing sebesar 1338,758, 473,756 dan 264,519 ppm. Ekstrak metanol daun kalba memilki aktivitas antioksidan paling tinggi. Uji senyawa metabolit sekunder pada ekstrak metanol daun kalba menunjukkan senyawa metabolit sekunder golongan terpenoid, flavonoid dan fenolat. Hasil analisis menggunakan spektrofotometer UV-Vis menunjukkan adanya gugus kromofor C=C dan hasil analisis menggunakan spektrofotometer IR menunjukkan bahwa ekstrak metanol daun kalba memiliki gugus fungsi O-H, C-H alifatik, C=C alkena dan C=C aromatic.Kata kunci : maserasi, antioksidan, DPPH ANTIOXIDANT ACTIVITY EXPERIMENT OF KALBA'S (Albizia falcataria) LEAVE EXTRACT WITH DPPH (1,1-Diphenyl-2-picrylhydrazyl) METHOD AND IDENTIFICATION OF CHEMICAL COMPOUNDS ABSTRACTDetermination of antioxidant activity from Kalba's leaves extracts had been done in nhexane, ethyl acetate, and methanol solvent. The identification of secondary metabolite compounds had also been done. The maceration of Kalba leaves produced n-hexane (E1), ethyl acetate (E2) and methanol extracts in pasta form with yield of each extract 2,49% (w/w), 5,08% (w/w) and 5,32% (w/w). The determination of antioxidant activity for E1, E2, E3 had a value ES 50 respectively was 1338.758 ppm, 473.756 ppm and 264.519 ppm.Compounds secondary metabolites in methanol extracts of kalba leaves showed terpenoid, flavonoids and phenolic class. The analysis using UV-Vis spectrophotometer showed chromophore C=C group and the analysis using IR spectrophotometer showed that methanol extract of kalba leaves has O-H functional groups, aliphatic CH, C=C alkene, aromatic C=C.

ABSTRAKStaphylococcus aureus dan Escherichia coli adalah bakteri yang dapat menyebabkan infeksi. Umumnya masyarakat dalam mengobati penyakit infeksi terhadap bakteri sering menggunakan antibiotik, namun apabila digunakan secara berlebihan dan kurang terarah dapat mengakibatkan terjadinya resistensi. Untuk mengatasinya diperlukan pencarian bahan alami sebagai alternatif pengobatan, salah satunya yaitu minyak atsiri daun pala. Penelitian ini bertujuan untuk mengetahui aktivitas antibakteri minyak atsiri daun pala dari Banyumas terhadap S. aereus dan E. coli serta mengidentifikasi senyawa penyusunnya. Minyak atsiri dari serbuk daun pala kering diisolasi menggunakan metode destilasi air. Minyak atsiri yang diperoleh diuji sifat fisik dan dilakukan identifikasi senyawa penyusunnya menggunakan GC-MS. Pengujian aktivitas antibakteri dilakukan dengan menggunakan metode difusi untuk mengetahui Konsentrasi Hambat Tumbuh Minimum (KHTM) terhadap S. aereus dan E. coli. Rendemen minyak atsiri daun pala yang diperoleh sebesar 1,34%. Minyak atsiri ini berwarna kuning pucat, berbau khas minyak pala dengan indeks bias sebesar 1,4779 dan bobot jenis sebesar 0,8862 g/cm 3 . Minyak atsiri daun pala diketahui memiliki 33 komponen kimia dan 5 komponen kimia terbesarnya adalah sabinene, terpinene-4-ol, α-pinene, β-pinene, and β-phellandrene. Minyak atsiri daun pala terbukti memiliki aktivitas antibakteri terhadap S. aureus dengan KHTM pada konsentrasi minyak atsiri 3,125% menghasilkan zona hambat sebesar 16,81 mm dan terhadap E. coli dengan KHTM pada konsentrasi minyak atsiri 1% menghasilkan zona hambat sebesar 0,54 mm.

Jerapan C-4-fenasiloksifenilkaliks[4]resorsinarena terhadap Pb(II), Cd(II) dan Cr(III)) UNDRI RASTUTI, DWI SISWANTA, WISNU PAMBUDI, BETA ACHROMI NUROHMAH, BOHARI M. YAMIN & JUMINA* ABSTRACT C-4-phenacyloxy phenyl calix[4]resorcinarene (CPPCR) was synthesized by acidic condensation of 4-hydroxybenzaldehyde and resorcinol. The adsorption of CPPCR for Pb(II), Cd(II) and Cr(III) has been studied by measuring the metal concentration in aqueous solution using Atomic Absorption Spectrophotometry (AAS). The effects of solution pH, contact time and initial concentration of metal ions on the adsorption capacity of CPPCR were investigated. The adsorption kinetic of all the ions obeyed the Ho and McKay pseudo 2 nd order rate law and the adsorption isotherm profile matched very well with Langmuir model. The separation factor (R L) of CPPCR for Pb(II), Cd(II) and Cr(III) were 0.190, 0.017, and 0.065, respectively, indicating the formation of monolayer behaviour. The Gibb free energy (ΔG) of the adsorption for all the metal ions have negative values indicating the adsorption process of Pb(II), Cd(II) and Cr(III) by CPPCR are spontaneous.