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All Journal Buletin Peternakan Jurnal Veteriner Microbiology Indonesia Biota: Jurnal Ilmiah Ilmu-Ilmu Hayati BERITA BIOLOGI
YULIASRI JAMAL
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Immunology & microbiology Medicine & Pharmacology Veterinary Other

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KOMPONEN KIMIA MINYAK ATSIRIDAUN TIGA JENIS PIPERACEAE Yuliasri Jamal
BERITA BIOLOGI Vol 6, No 3 (2002)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v6i3.1210

Abstract

Chemical analysis of leaves essential oil on three Piper species, P. malamiri, P. baccatum and P. majusculum was conducted using gas chromatography and mass spectrometry (GCMS) method.Chromatogram result showed 52, 56 and 47 peaks on leaves essential oil of P.malamiri, P.baccatum and P.majusculum respectively. Based on the peaks,it is known that isocaryofilene is the major, common and as the highest component found in the three essential oils, beside several other major components.
KANDUNGAN SENYAWA ALKALOIDA, TANIN SERTA NILAI NUTRISI BEBERAPA JENIS HIJAUAN YANG DIBERIKAN PADATERNAK Dl PULAU TIMOR (The Contents of Alkaloid, Tannin and its Nutritional- Values from Several Browse Fed to Livestock in Timor Island) Yuliasri Jamal; Gono Semiadi
BERITA BIOLOGI Vol 4, No 1 (1997)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v4i1.1288

Abstract

A study was conducted in determining the contents of alkaloid, tannin and nutritional Values from six browses fed to fattening cattle in Timor island. The samples Were gmelina (Gmelina arborea Roxb.),pates/lamtoro (Leucaena leucocephala [Lamk.J De Wit),daun kupu-kupu (Bauhinia malabarica Roxb.), gala-galaAuri (Sesbania grandiflora [Li Pers.l gamal (Gliriddia sep/um [lick] Steud.).and kabesak (Acacialeucoohloea Willd.).Samples were collected during wet and dry seasons.Results showed that total number of alkaloid compounds varied from 14 to 30.There was an increase in concentration for alkaloid and tannin from Wet to dry season, however the concentrations were low (< 1%).The increase in the concentrations between seasons Were ranged from 20% to 32096.Nutritional values of the browse during wet season were considered high, however there is a need in evaluating the nutritional values of the browses during dry season as well.
Antibacterial Activity and Mode of Action of (+)-2,2'-Epicytoskyrin A ANDRIA AGUSTA; DEWI WULANSARI; YULIASRI JAMAL; ARIEF NURKANTO; PRAPTIWI PRAPTIWI; AHMAD FATHONI
Microbiology Indonesia Vol. 9 No. 1 (2015): March 2015
Publisher : Indonesian Society for microbiology

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2156.354 KB) | DOI: 10.5454/mi.9.1.5

Abstract

Antibacterial activity of (+)-2,2'-epicytoskyrin A, a main metabolite from culture of fungal endophyte Diaporthe sp. GNBP-10, was investigated against several strains of Gram-positive, Gram-negative bacteria, and one strain of Mycobacterium smegmatis. (+)-2,2'-Epicytoskyrin A exhibited prominent activity against Staphylococcus aureus BCC 1452 with minimum inhibitory concentration (MIC) value of 0.06 μg mL-1. The effect of (+)-2,2'-epicytoskyrin A treatment to S. aureus, resulted in alteration of bacterial cell membrane with an increase of cation efflux, while the cytoplasmic content was not leaked out and finally resulted in cell damage.
Co-Authors AHMAD FATHONI ANDRIA AGUSTA ARIEF NURKANTO Atit Kanti Chairul Chairul Dewi Wulansari GONO SEMIADI Muhamad Ilyas Praptiwi Praptiwi Raden Taufiq Purna Nugraha Tri Murningsih Zuherti Zainul