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INDONESIA
BERITA BIOLOGI
Published by Lembaga Ilmu Pengetahuan Indonesia
ISSN : -     EISSN : -     DOI : -
Core Subject : Science, Agriculture,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology
Arjuna Subject : -
Articles 2,125 Documents
 149   150   151   152   153 
PAKAN ALTERNATIF PADA TRENGGILING JAWA (Manis javanica Desmarest, 1822) DI PENANGKARAN Anita Rianti; Mariana Takandjandji
BERITA BIOLOGI Vol 18, No 3 (2019)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v18i3.3013

Abstract

The use of alternative feed for Sunda pangolin in captivity is one way to cope with a shortage of feed. The aims of the research was to determine the impact of the use of alternative feed toward feed consumption and daily weight gain of pangolin in captivity. The research was conducted at Research Forest Dramaga, Bogor. The research material used by 4 individual pangolin consists of 2 males and 2 females with an average weight of 4.28 ± 0.22 kg. Research using 4x4 Latin Square Design, with 7 days of preliminary period and 14 days of data collection. The treatment applied were 4 alternative feeding i.e A= 50% kroto + 50% egg; B= 50% kroto + 50% tofu; C= 50% kroto + 20% egg + 30% tofu; D= 50% kroto + 18% egg + 26% tofu + 6% termites. The results showed that the effect of alternative feed not significantly (P<0.05) on feed consumption and body weight gain pangolin. Pangolin with treatment C consumed feed based on dry matter as much as 63.08 grams per day or 10.46% from body weight and the biggest weight gain 35.0 grams per individual per day. 
CEKAMAN OKSIDASI SEL KHAMIR Candida tropicalis YANG DIPERLAKUKAN DENGAN PARASETAMOL DAN ANTIOKSIDAN (+)-KATEKHIN Heddy Julistiono
BERITA BIOLOGI Vol 11, No 1 (2012)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v11i1.1889

Abstract

In order to more understand similarity of yeast Candida tropicalis with mammalian cells in analgesic drug paracetamol metabolism and toxicity, ability of yeast in the drug metabolism and oxidative response of cells treated with the drug and (+)-catechin was studied. In mammalian cells, paracetamol toxicity is mainly caused by metabolite byproduct of drug metabolism catalyzed by cytochrome P450, a membrane-bound enzyme and peroxidase and a soluble enzyme. Previously it has been shown that paracetamol induced oxidative stress in the yeast cells; and green tea extract protected the cells from oxidation. In this study, it had been shown that paracetamol could be metabolized by yeast cell suspension or cell free extracellular protein, reflecting possibility of role of enzyme that can not be separated from cell and that is soluble, which is common phenomenon in mammalian cell system. Paracetamol of 3 mg/ml increased lipid peroxidation, a marker of oxidative stress. A green tea polyphenol, (+)-catechin of 0.1 mg/ml did not decrease lipid peroxidation content induced by paracetamol. At higher concentration (2 mg/ml), solely (+)-catechin did not increase lipid peroxidation content. Paracetamol or (+)-catechin induced slightly activity of superoxide dismutase enzyme. The data indicated that paracetamol metabolism or toxicity in the yeast may be similar to that of mammalian cells. In this condition, it suggested that (+)-catechin is one of polyphenol green tea that has weak activity of antioxidant and consequently has weak activity of prooxidant. Mechanism of paracetamol toxicity in C. tropicalis is still to be studied with emphasis on the free radical formation and drug metabolism.
PEMANFAATAN KUSKUS OLEH MASYARAKAT PEDALAMAN IRIAN JAYA W Rosa Farida; Gono Semiadi; Wirdatcti Wirdateti
BERITA BIOLOGI Vol 4, No 5 (1999)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v4i5.1254

Abstract

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UJI RESISTENSI BAKTERI TERHADAP HgCl, YANG DIISOLASIDARI TANAH PENAMBANGAN EMAS DIPONGKOR, JAWA BARAT Hartati Imamuddin
BERITA BIOLOGI Vol 10, No 4 (2011)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v10i4.758

Abstract

Pollution of heavy metals mercury (Hg) is a serious problem especially in gold mining areas. This study aims to isolate the bacteria in the gold mining of Pongkor (West Java) and testing the bacterial resistance to mercury (Hg). The results showed that of the 5isolates tested, qualitatively only 2 isolates (P3 and P5) that resistant to HgCI2, each at a concentration of 30 and 40 ppm.Furthermore, up to 70 ppm concentration of HgCl2, P5 bacteria can still grow well even require a longer time lag phase in period.
AKTIVITAS ANTIOKSIDAN DAN ANALISIS KIMIA EKSTRAK DAUN JUNGRAHAB (Baeckeafrutescens L.) Tri Murningsih
BERITA BIOLOGI Vol 10, No 1 (2010)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v10i1.2060

Abstract

Extraction of Jungrahab (Baeckea frutescens L.) leaves was done by using organic solvent (ether). The antioxidant activity of the extract was investigated using l,l-diphenyl-2-picrylhydrazyl (DPPH) radical scavenging assay. Ascorbic acid (vitamin C) was employed as a positif control. By virtue of their hydrogen donating ability, the extract and ascorbic acid exhibited reducing power.The extract was found has activity in free radical scavenging activity against DPPH. The antioxidant activity was supposed to be due to the composition of certain constituens e.g. 2,6-di(/-buthyl)-4-hidroxybenzoie acid (BHT-acid), 5,7-dihydroxy-6-methylflavanone and a-tocopherol (vitamin E) within the extract.
PELESTARIAN BIAK-BIAK KAPANG DENGAN MINYAK PARAFIN TRIADI BASUKI
BERITA BIOLOGI Vol 2, No 2 (1977)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v2i2.1390

Abstract

Berbagai  pelestarian jasad renik telah digunakan orang dalam usaha mengurangi pekerjaan rutin pemeliharaan sualu koleksi biak jasad renik dalam jumlah besar.Salah satu cara tersebut dilakukan dengan menggunakan minyak mineral.Cara ini berasal dari Lumiere dan Chevrotier yang dalam tahun 1914 mengadakan penelitian gonokokus (Hartsell 1956).Beberapa peneliti seperti Ungermann, Michael, Morton dan Pulaski merupakan pelopor penggunaan cara tersebut untuk melestaiikan biak bakteri (Fennell, Raper & Flickinget 1950). Sherf merupakan orang pertama yang dalam tahun1943 menggunakan cara tersebut untuk melestarikan biak kapang (Buell & Weston 1947, Fennell, Raper & Flickinger 1950).Di Pusat Penelitian Botani - LBN (Laboratorium Treub), cara tersebut telah digunakan oleh Chaulan (1951) dalam tahun 1948.Dengan menggunakan minyak motor SAE 20 steril ia berhasil melestarikan sebanyak 74 dari 112 biak kapang selama 8-20 bulan, serta 81 dari 94 biak khamir selatna 10 bulan. Tetapi ia tidak berhasil melestarikan biak Sporobolomyces.Dari catatan yang ada pada arsip lembaga, dalam tahun 1961 biak-biak yang ditumbuhkan kembali oleh Chaulan itu dan sebagian koleksi biak lainnya dipindahkan ke media miring agar taoge dalam tabung reaksi.Setelah tumbuh dengan baik biak-biak ini dilestarikan dengan minyak parafin, disimpan tegak dalam lemari kayu dalam suhu kamar.Dalam tahun 1976 biak-biak tersebut dicoba ditanam kembali.Hasil penanaman kembali biak-biak kapang ini dilaporkan dalam tulisan berikut ini
An Overview of Research Activities in Biodiversity Conservation Project Kojiro Mori
BERITA BIOLOGI Vol 5, No 6 (2001)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v5i6.1069

Abstract

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DIVERSITAS FLORISTIK DAN STRUKTUR VEGETASI DI HUTAN GUNUNG PAYUNG, TAMAN NASIONAL UJUNG KULON Purwaningsih Purwaningsih; Tika D. Atikah
BERITA BIOLOGI Vol 17, No 3 (2018)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v17i3.3434

Abstract

A floristic diversity and vegetation forest structure was carried out on the Mount Payung, Ujung Kulon National Park. The objective was to floristic composition and structure of the forest located at the peninsula of Ujung Kulon, Banten. The study was conducted using the quadrat method by establishing plots of 5000 m2 each at two locations Pasir Ipis and Gunung Keneng, thus the total area sampled was 1 ha. They were Plot Pasir Ipis and Plot Gunung Keneng. A total of 1898 trees comprising 105 species of 74 genera and 43 families were recorded. The number of species at Pasir Ipis higher (90 species) than plot Gn Keneng (61 species). Based on calculation the important value indexes (IVI), there were some dominan species with IVI >10 at Pasir Ipis Neesia altissima (IV=21,55), Barringtonia racemosa (17,89), Payena acuminata (13,35) and Neonauclea lanceolata (12,37). The dominated species at Plot Gn Kendeng were Pseuduvaria reticulata (IV= 34,30), Dillenia excelsa (27,62), Lagerstroemia speciosa (20,89), Popowia pisocarpa (17,57). The structure of forest could be inferred from the diameter and height of trees. The diameter measurements showed that 75,57 % of trees in plot Pasir Ipis and 80,51 % in plot Gunung Kendeng consist of small individuals with diameters between 10-20 cm. Trees with large diameters of >100 cm occurred in two plots among them Barringtonia racemosa, Polyalthia lateriflora, Popowia pisocarpa, Artocarpus elasticus. The presence of large numbers of small trees and lesser numbers of trees with large diameters in a forest stand indicated that the stand was regenerating after heavy disturbance. The presence of the majority of trees with height of < 20 m (99 %) further confirmed the forest’s dynamic status.
AUTEKOLOGI PERTUMBUHAN PINUS (Pinus merkusii Junghuhn et de Vriese) PASKA ERUPSI DI GUNUNG GALUNGGUNG, KABUPATEN TASIKMALAYA JAWA BARAT Asep Sadili
BERITA BIOLOGI Vol 14, No 3 (2015)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v14i3.1827

Abstract

Galunggung Mountain forest area in West Java of post eruption 1982 may served as a natural laboratory for studying plant development and plant growth, including pine trees. Pine trees that were planted by Perhutani at Galunggung had high prospect although they were planted at degraded areas and poor nutrient. Experimental plots were set up in two different locations at Mount Galunggung. Trunk diameter, tree height, total height, soil humidity and soil pH was measured for all pine trees inside the plot at each subplot. All measured parameters resulted in varied values with varied deviation standard. Measurement of trunk diameter, branches height and total height of pine trees in Mount Galunggung suggested that their growth rate was slow and no significant correlation among them.
PENGARUH INOKULASI SEJUMLAH ISOLAT AZOSPIRILLUM TERHADAP PERTUMBUHAN DAN SERAPAN PUPUK N PADA TANAMAN JAGUNG S Gandanegara; S Slamet; Idawati Idawati; M Lina
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.v6i3.1222

Abstract

Two greenhouse experiments had been conducted to study the effect of inoculation of some Azospirillum isolates on maize growth in sand culture and sterilized soil. In the first experiment some growth parameters were used, i.e., root length and root surface area, dry weight of root, shoot, and shoot length. Inoculation enhanced plant growth, as shown by increased of all plant growth parameters. Root length and root surface area were sensitive parameter and could be used for evaluating the effect of inoculation. The best plant perfomance achieved by inoculation with Azospirillum isolates Btl No. 8 and No. 11 and with the increase of plant biomass 24 and 53% over control, respectively. In the second experiment, six selected Azospirillum isolates were evaluated on growth, N uptake, and N contribution15 in maize plants. N isotope dilution method was used to measure the N contribution from fertilizer. Uninoculated control plants showed low dry weight and contribution from N fertilizer, 3.09 gram and 10.84%. Inoculation increased mineral nutrition expressed in higher N plant yield and N contribution from fertilizer. N plant yield ranging from 147 to 189 mg N as compared to 134 mg N in control plants. The high contribution of N fertilizer (13.21-14.35 %) achieved by inoculation with Azospirillum isolates No. 6, 7, 8, and RDCB Az 1

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