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BERITA BIOLOGI
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Articles 732 Documents
PENGARUH ANGKAK HASIL FERMENTASI BERAS OLEH Monascus purpureus JMBa TERHADAP AKTIVITAS ANTIOKSIDAN DAN GLUTATHION PEROKSIDASE (GPx) SERTA HISTOPATOLOGI HATI TIKUS GALUR SPRAGUE DAWLEY [The effect of Angkak from rice fermented by Monascus purpureus JMBa on antioxidant and glutathion peroxidase (GPx) activity and liver histopatology of Sprague Dawley Rats] Kasim, Ernawati; Triana, Evi; Yulinery, Titin; Nurhidayat, Novik
BERITA BIOLOGI Vol 11, No 2 (2012)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Original Source | Check in Google Scholar | Full PDF (311.199 KB) | DOI: 10.14203/beritabiologi.v11i2.487

Abstract

Free radicals released from metabolism processes in the body were reactive and toxic to cells and tissues because it cause protein, cell membrane and nucleic acid damages which lead to cancer. It could be overcame if antioxidant system in the body is in good function.Nevertheles antioxidant system could be destructed by variety of conditions. Modern lifestyle that frequently consumed of high saturated fat, additives, and low fiber content in foods were potential risk for cancer and hypercholesterolemia. To overcome that risks with specific drugs were high cost. Therefore this research was conducted to take advantages of natural sources which potential for antioxidant and antihypercholesterolemia activities that could be fast, easy and inexpensive processing. One of the natural sources that meet the criteria was angkak resulted from rice fermented by Monascus purpureus. The result revealed that angkak contained lovastatin showed antioxidant and antihypercholesterolemia activities and increased glutathion peroxidase activity of optimal dose 5 g/day. The histopathologi observation of rat’s liver showed that administered of angkak on rats feed high level of cholesterol inhibited accumulation of fat in rat’s liver.
KEANEKARAGAMAN JENIS TUMBUHAN PEMAKAN SERANGGA DAN LAJU FOTOSINTESISNYA DI PULAU NATUNA [Diversity of Insectivorous Plants and Its Photosynthetic Rate in Natuna Island] Mansur, Muhammad
BERITA BIOLOGI Vol 11, No 1 (2012)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Original Source | Check in Google Scholar | Full PDF (290.505 KB) | DOI: 10.14203/beritabiologi.v11i1.481

Abstract

Studies of insectivorous plants diversity and photosynthesis rate of pitcher plants in Natuna Island was conducted on August 2011, Survey in eleven villages conducted to determine the species found in the visited sites, Bioscientific Portable LCI ADC Photosynthesis System used for measurement of pitcher plants photosynthesic rate, The results shows that there are three families of insectivorous plants founded in study sites, namely Nepenthaceae, Droseraceae and Lentibulariaceae, Six species of Nepenthaceae were found (four species and two natural hybrids) i,e; N. gracilis, N. ampullaria, N. rafflesiana, N. reinwardtiana, N. x hookeriana and N. x trichocarpa. While from family Droseraceae and Lentibulariaceae were found only one species respectively, which is Drosera burmanni and Utricularia bifida. Nepenthes reinwardtiana has the highest rate of photosynthesis namely 21,05 µmol/m /s, followed by N. gracilis (17,66 µmol/m /s), N. rafflesiana (16,6 µmol/m /s), N. x hookeriana (15,84 µmol/m /s) and N. ampullaria (9,96 µmol/m /s).
INDUKSI KALUS DAN REGENERASI TANAMAN DARI KULTUR ANTERA PADI Fl HYBRID (ORYZA SATIVA L.) Dwimahyani, Ita; Ishak, Ishak; Sobrizal, Sobrizal
BERITA BIOLOGI Vol 5, No 1 (2000)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Original Source | Check in Google Scholar | Full PDF (358.767 KB) | DOI: 10.14203/beritabiologi.v5i1.1094

Abstract

A haploid breeding program was initiated to develop doubled haploid blast tolerance rice breeding via anther culture.Blast tolerant variety (Laka) was crossed with Kencana Bali (sensitive to blast).Anthers from F1 were cultured on two kind of media (combination of N6 macro salt and MS micro salt) containing 1 mg/l NAA + 0,1 mg/l kinetin called medium-1 and another one containing 1 mg/l 2,4-D + 0,1 mg/l kinetin called medium-2.Anthers were treated with cold shock (4 °C)for 5 and 10 days before cultured.Results of experiment showed that F1 plants derived anthers were able to form call Number ofplantlets were produced during anthers culture consisted of 482 green plants and 50 albinos. Most of green plants did not produced root.Root growth of plantlets were induced with 1.5-4.5 mg/l IBA in MS medium.
PERANAN CENDANA DALAM PEREKONOMIAN NTT: DULU DAN KINI Banoet, Herman H
BERITA BIOLOGI Vol 5, No 5 (2001)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Original Source | Check in Google Scholar | Full PDF (320.836 KB) | DOI: 10.14203/beritabiologi.v5i5.1452

Abstract

Berbagai stigma diberikan untuk cendana (Santalum album L.) berhubungan dengan status dan perlakuan terhadap komoditi tersebut, seperti kayu setan (hau nitu), kayu perkara (hau lasi) dan kayu pemerintah (hau plenat). Penghitungan terhadap produksi cendana dalam kurun waktu 28 tahun (1969-1997) cukup fluktuatif, dengan rataan sebesar 606.000 kg per tahun. Sementara nilai jualnya bervariasi, tergantung dari klasifikasi kayu, yaitu antara Rp. 1.000 (untuk gubal) hingga Rp. 118.000 (untuk kelas A). Perdagangan tersebut telah memberikan kontribusi kepada PAD (Pendapatan Asli Daerah) NTT dalam kurun waktu 8 tahun (1990-1998) dengan rataan sebesar Rp. 4.071.000.000 setiap tahun. Mengingat perdagangan cendana memiliki nilai ekonomi, baik bagi Pemerintah Daerah, masyarakat maupun industri/pedagang cendana, maka diperlukan pokok-pokok pikiran strategis bagi pengembangan dan pengelolaan cendana di masa mendatang.
TATA AIR PODOLANDAK (Baccaurea sp.), SPESIES JARANG KAWASAN HUTAN TROPIK TERDEGRADASI AKIBAT PENAMBANGAN EMAS DI BOJONGPARI, JAMPANG, PELABUHAN RATU, JAWA BARAT Naiola, B. P.
BERITA BIOLOGI Vol 5, No 2 (2000)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Original Source | Check in Google Scholar | Full PDF (335.415 KB) | DOI: 10.14203/beritabiologi.v5i2.1157

Abstract

Forest exploitation activities always brings some environmental problems such as reduction in individual plant or species biodiversity and some physical deterioration which lead to microclimate change.This study presenting the results of measurement of plant-water relations against a shrub plant (Sundanese) podolakan (Baccaurea sp.),a rare species in a degraded tropical forest land under gold mining pressure in Jampang,Pelabuhan Ratu, West Java.Results shows that no significant differences between plants growing in the degraded and non-degraded (natural) sites in their water relations aspects emphasized on water potential components i.e. total water potential (¥, -MPa): 0,48 and 0,38, osmotic potential (¥„, -MPa):1,64 and 1,44 and turgor pressure (y/p, MPa): 1,16 and 1,06 respectively. The values of their fat turgorloss point showed no significant different either between degraded and natural sites, i.e. -1,93 MPa and -1,43 MPa.Interestingly, in comparison with the dominant species i.e. puspa (Schima wallichii (DC) Korth.) in the non-degraded site, results shows a significant different between these two degraded forest species in their ¥„ (0,01>P>0,001), where there was better developed in the rare species (-1,44 MPa) than the dominant ones (-1,29 MPa). While in the degraded site, there was also a significant different (P<0,001),where the rare species had better development (-1,64 MPa) than the dominant (-0,67 MPa). It seems that the dominant spesies in the degraded site underwent more environmental (water) stress than the rare species as shown by more negative of its Y (-0,82 MPa),while rare species was only -0.48 MPa. Water potentials at turgor loss points were not significantly different between Baccaurea sp. in degraded and natural sites.It is suggested that even though as a rare species, Baccaurea sp.retained better water status. This is maybe due to its position in the forest as lower strata plants, thus received less effect of climatic stress in upper canopy such as more light intensity and bigger wind flow. Hence, in natural reclamation, plant species like Baccaurea sp. may have better chance to role as pioneering species. No significant differences in f at f(turgor loss points) between the degraded and natural sites (-1..93 and -1,43 MPa respectively). It is suggested that water is not a limiting factor for the plants in degraded tropical forest site under gold mining pressure.
PEMBUDIDAYAAN POHON EBONI (Diospyros celebica Bakh.) Santoso, Budi; Anwar, Chairil; Nompo, Sahara
BERITA BIOLOGI Vol 6, No 2 (2002)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Original Source | Check in Google Scholar | Full PDF (268.773 KB) | DOI: 10.14203/beritabiologi.v6i2.1494

Abstract

Besamya tingkat kerusakan tegakan eboni akibat eksploitasi hutan, kelihatannya makin diperburuk dengan kurang dilaksanakannya kegiatan penanaman kembali eboni di lapangan.Seandainya HPH telah melakukan upaya penanaman kembali pohon eboni, diperkirakan tingkat keberhasilannya masih sangat rendah atau mungkin belum sepadan antara luas areal yang ditanami dengan luasan areal bekas tebangan.Cara pembudidayaan tanaman menjadi sangat penting dalam pengusahaan pohon eboni ini. Penanaman pohon eboni tidak jauh berbeda dengan tanaman tropis lainnya. Saat ini kendala yang dihadapi dan perlu mendapat perhatian adalah belum dikuasai bagaimana teknologi benih, pengadaan bibit berkualitas serta apa hama penyakit pada eboni.Disajikan bagaimana pembudidayaan eboni secara praktis berdasarkan hasil penelitian, pengalaman dan pustaka pendukung, dan diharapkan dapat menambah informasi bagi praktisi lapangan atau pihak-pihak yang membutuhkan, sehingga keberhasilan penanaman eboni lebih terjamin.
VARIASI DAN DEGRADASI SUARA PANGGILAN KODOK JANGKRIK [HYLARANA NICOBARIENSIS (STOLICZKA, 1870)] ASAL PULAU ENGGANO (ANURA: RANIDAE) [Variation and degradation on advertisement calls of Cricket Frog, Hylarana nicobariensis (Stoliczka, 1870) from Enggano Island] Kurniati, Hellen; Hamidy, Amir
BERITA BIOLOGI Vol 15, No 3 (2016)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Original Source | Check in Google Scholar | Full PDF (3468.466 KB) | DOI: 10.14203/beritabiologi.v15i3.2293

Abstract

Frog’s group of Hylarana nicobariensis (Stoliczka, 1870) is a complex species that has diverse genetic populations and variations on advertisement calls. Variations on advertisement calls among populations have been reported in Sumatra, Java and Bali. The population of frog in Enggano has different phenomenon that was not found in Sumatra and Java.  Enggano population was genetically identical, but the advertisement calls were very diverse. There were four types of advertisement calls on the population in Enggano Island, namely: (1) advertisement call type 1 which has pulse wave with the dominant frequency of 2855.13 ± 135.22 Hertz; (2) advertisement call type 2 which has pure tone wave with the dominant frequency of 2720.29 ± 97.69 Hertz; (3) advertisement call type 3 which has pulse wave with dominant frequency 2634.61 ± 292.81 Hertz; (4) advertisement call type 4 which has pure tone wave with dominant frequency 1618.79 ± 83.05 Hertz. The degradation of the dominant frequency and the lower frequency was likely due to the increase of snout to vent length (SVL) of adult male that were followed by increasing the size of the head.
PEMANFAATAN BERBAGAI SENYAWA NITRIL DAN PRODUK DEGRADASINYA SEBAGAI SUBSTRAT UNTUK PERTUMBUHAN ISOLAT BAKTERI TP Supriyati, Dyah; Sunarko, Bambang
BERITA BIOLOGI Vol 5, No 4 (2001)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Original Source | Check in Google Scholar | Full PDF (439.201 KB) | DOI: 10.14203/beritabiologi.v5i4.1129

Abstract

Our experiments showed that bacterial isolate TP was able to grow on acetonitrile, butyronitrile and propionitrile as sole sources of carbon, energy and nitrogen, but not on acrylonitrile dan benzonitrile. Besides on nitriles, isolate TP could grow on acetamide,propionamide, benzamide and nicotinamide, but not on acrylamide. However, none of the tested carboxylic acids could be used as growth subtrate for bacterial isolate TP. The best growth substrates of isolate TP were butyronitrile (CH3-CH2-CH2-CN) and propionamide (CH3-CH2-CONH2). When isolate TP grew on butyronitrile, the highest biomass concentration, the doubling-time (td), and the specific growth rate1(n) were 8.99 gram cell dry weight/liter, 4.8 h and 0.144 h , and when grew on propionamide were 4.57 gram cell dry weight/liter, 5.7 h and10.122 h", respectively.
KAJIAN KONSERVASI EBONI {Diospyros celebica Bakh.) Samedi, Samedi; Kurniawati, Ilmi
BERITA BIOLOGI Vol 6, No 2 (2002)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Original Source | Check in Google Scholar | Full PDF (349.662 KB) | DOI: 10.14203/beritabiologi.v6i2.1486

Abstract

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PENGARUH PEMBERIAN ELISITOR JAMUR Phytium aphanidermatum (Edson) Fitzp. TERHADAP KANDUNGAN AJMALISIN PADA KULTUR KALUS BERAKAR Catharanthus roseus (L.) G. Don Aprianita, Aprianita; RR, Esyanti; Siregar, AH
BERITA BIOLOGI Vol 6, No 4 (2003)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Original Source | Check in Google Scholar | Full PDF (4046.319 KB) | DOI: 10.14203/beritabiologi.v6i4.3448

Abstract

An experiment to study the effect of ellicitor derived from Phytium aphanidermatum On ajmalicine content of Catharanthus roseus root- callus culture has been conducted. Root-callus was induced  from left segment, and grew optimally on Zenk medium with the addition of  10-7 M BAP and 10-5 M NAA. Root-callus was subcultured three times, and followed with elicitation with elicitor derived from autoclaved  P. aphanidermatum. The concentration tested were 0.50, 0.5, 1.0 and 5.0 mg DW/ml, and harcested at 0,18,36 and 72 hours. The ajmalicine was analyzed qualitatively and quantitatively by using High Performance Liquid Chromatography (HPLC). The result showed that ajmalicine content was influenced significantly by concentration of ellicitor and harvesting time. A significant increase of ajamalicine content (153.29 ± 1.61 mg/g DW) was achieved by additon of 1 mg Dw/ml ellicitor after 36 hours incubation. 

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