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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
 101   102   103   104   105 
PENYERBUKAN PADA PINANG YAKI (ARECA VESTIARIA) DI KEBUN RAYA BOGOR N. UTAMI; SIH KAHONO
BERITA BIOLOGI Vol 3, No 9 (1989)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v3i9.1300

Abstract

N. UTAMI & SIH KAHONO. 1988. Pollination on the pinang yaki (Areca vestiaria Giseke) in the Bogor Botanical Gardens. Berita Biologi 3(9): 470 -472.Morphology,flowering biology of the pinang yaki was observed at the Bogor Botanical Gardens.This plant i&imonocious and self pollinated. However,insect visitors appear to play an importantrole of fruit setting.It was showed that the number of fruits setting in isolated inflorescence were smaller than in unisolated inflorescence.During anthesis,the inflorescence were visited by ten species of insects,and Trigona iridipennis was suspected as the palm pollinator.
BIOPRODUKSI (+)-EPIEPOKSIDON OLEH JAMUR ENDOFIT Diaporthe sp. E YANG DIISOLASI DARI TANAMAN TEH Andria Agusta
BERITA BIOLOGI Vol 8, No 3 (2006)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v8i3.798

Abstract

Six kinds of the endophytic fungi have been isolated from a tea plant. One of them identified as Diaporthe sp. E based on their morphological characters and rDNA sequens. By the cultivation in liquid medium, the endophytic fungus produced (+)-epiepoxydon besides gentisyl alcohol and toluquinol.
OXYGEN CONSUMPTION OF ROCK BREAM Oplegnathus fasciatus IN DIFFERENT SALINITY LEVELS AND TEMPERATURE DEGREES [Konsumsi oksigen Ikan Rock Bream Oplegnathus fasciatus pada tingkat salinitas dan suhu yang berbeda] Vitas Atmadi Prakoso; Jun Hyung Ryu; Byung Hwa Min; Rudhy Gustiano; Young Jin Chang
BERITA BIOLOGI Vol 15, No 2 (2016)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v15i2.2303

Abstract

Rock bream Oplegnathus fasciatus is one of marine fish species with high commercial value in the region of East Asia. However, studies on the metabolism related to environmental factors for this species is still lacking. This study was therefore aimed to assess the effects of salinity and temperature on oxygen consumption (OC) of rock bream (TL: 26.9±0.6 cm, BW: 477.3±61.9 g) was observed by using respiratory chamber to understand the optimal salinity and temperature for culture of rock bream. Research was conducted in Pukyong National University, Busan, South Korea. Four experimental groups were conducted to measure oxygen consumption (OC) according to salinity (35, 25, 15, and 35?5 psu) and temperature changes (15?20?25oC). The results showed that low salinity exposures tend to decrease OC of rock bream (87.1, 78.3, 66.3, and 58.5 mg O2/kg/h at 35, 25, 15, and 5 psu, respectively). Meanwhile, the oxygen consumption of rock bream increased with increasing water temperatures (35 psu: 64.7, 104.0, and 175.9 mg O2/kg/h at 15, 20, and 25oC, respectively; 25 psu: 45.8, 101.7, and 185.9 mg O2/kg/h at 15, 20, and 25oC, respectively; 15 psu: 29.8, 103.3, and 155.5 mg O2/kg/h at 15, 20, and 25oC, respectively).
NEW THINKING IN PUNT MORPHOLOGY W. A. van Heel
BERITA BIOLOGI Vol 1, No 3 (1971)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v1i3.1440

Abstract

This note is to reflect the thoughts, practical work and hopes of two workers in the Netherlands who are angaged in this branch of science, Dr. B.M.Moeliono of the Botanical laboratory at Groningen, and myself at the Rijskherbarium at laiden
REHABILITATION OF DEVASTATED PEAT LANDS AND ESTABLISHMENT OF SUSTAINABLE AGRO-SYSTEMS THROUGH BUFFER ZONE PLANNING IN CENTRAL KALIMANTAN Mitsuru Osaki; Hanny Wijaya; Herwint Simbolon
BERITA BIOLOGI Vol 5, No 3 (2000)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v5i3.1112

Abstract

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EFEK FERRI SITRAT TERHADAP KEMAMPUAN KHAMIR Candida tropicalis DALAM MEREDUKSI 3-(4,5-DIMETHYLTHIAZOL-2-YL)- 2,5-DIPHENYLTETRAZOLIUM BROMIDE (MTT) Heddy Julistiono; Resti Siti Muthmainah; Adam Adam
BERITA BIOLOGI Vol 11, No 2 (2012)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v11i2.488

Abstract

Effect of iron (ferric citrate) on 3-(4,5-dimethylthiazol-2-yl)2,5-diphenyltetrazolium bromide (MTT) reduction in yeast Candida tropicalis was investigated. Reduction of MTT in yeast grown in YMB media containing 5 mM of ferric citrate decreased significantly compared to that of yeast grown containing 0, or 1.25 or 2.5 mM ferric citrate after 24 h incubation. However, there was no difference in cell density among cultures treated with 0 mM, 1.25 mM, and 5 mM ferric citrate. Ferric citrate of 5 mM caused smaller colony when cells were grown on YPDG media. Reduction of MTT in smaller colony cells was weaker than that of with normal size colony. An antioxidant, Epigallocatechin Gallate (EGCG) of 0.01 % could not reverse MTT reduction caused by 5 mM ferric citrate. Since enzymes responsible in MTT reduction are usually located in mitochondrion, the data suggested that, in the condition of 5 mM ferric citrate might cause mitochondrion disorder without killing the yeast cells. The data was in concordance with other studies on other yeast or human cells. However, this study does not show role of free radicals provoked by high level of iron concentration.
KEANEKARAGAMAN DAN KELIMPAHAN ANGGREK EPIFIT DI KAKI GUNUNG LIANGPRAN, KALIMANTAN TIMUR Surianto Effendi; Nunik Sri Ariyanti; Tatik Chikmawati
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.v18i3.3709

Abstract

Liangpran Mountain is located within the Heart of Borneo (HoB) Conservation Area which has high biodiversity. The exploration of orchids has been carried out in several locations in the HoB region and recorded a high diversity of wild orchid. This research was conducted to explore and inventory the orchids from the foothill of Mount Liangpran, and record  the diversity and abundance of epiphytic orchids in the study sites. This research was carried out by making track of exploration along the Nuyung river estuary to the Tebing Lapah. The richness and abundance data were collected in three plot of 1000 x 20 m. The host tree characteristics and distribution of epiphytic orchid on the host tree were recorded. Fourteen species orchids were collected, and the most dominant are Coelogyne asperata and Agrostophyllum stipulatum with an abundance of 23.53% each. The epiphytic orchids in host trees are spread from the zone II to V based on the Johansson’s sections, in which zone IV is the most diverse. Nine species of the host trees associated with the collected orchids were identified and grouped into five families. The characters of host trees are 7–57 m height,12–112 cm diameters, and 2 types of bark surfaces (rough and intermediate). 
FERMENTASI KECAP DARI BEBERAPA JENIS KACANG-KACANGAN DENGAN MENGGUNAKAN RAGI MUTAN Aspergillus sp. K-1 DAN Aspergillus sp. K-1A Elidar Naiola; Yati Soedaryati Soeka
BERITA BIOLOGI Vol 8, No 5 (2007)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v8i5.1901

Abstract

This study was focused on the selection of type of beans for kecap production. The mold fermentation or kecap koji making process was conducted in small scale at room temperature for 3 days and the brine fermentation for 2 weeks at room temperature.Product were analyzed for biochemical (total nitrogen, formol nitrogen, and total water soluble nitrogen) content. It was found that the final composision of kecap mash were mainly due to brain fermentation and by activities of strains showed varies effect to total nitrogen (TN), formol nitrogen (FN), and total water soluble nitrogen (WN).Kecap mash produced using kedelai, hiris and tolo inoculated with Aspergillus sp. K-1 containing formol nitrogen 0.58%, 0.65% and 0.57%, respectively.Meanwhile using Aspergillus sp. K-1A producing kecap mash with formol nitrogen were 0.75%, 0.75%, 0.65%, respectly. The ratio of WN to TN of the kecap mash from hiris and tolo were up to 50%, while the ratio of FN to TN varies, which was influenced by the koji used.Based on the chemical properties above, it can be recommended that hiris can be used for kecap production though requires extensive researches.
BIOLOGI PERBUNGAAN JAHE MERAH ( ZINGIBER OFFICINALE ROSC. VAR. RUBRA Erlin Rachman
BERITA BIOLOGI Vol 4, No 4 (1998)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v4i4.1267

Abstract

A study on floral biology of red ginger (Zingiber officinale var. rubra) was conducted to approach the floral characters and natural obstacles affecting their sexual reproduction. In vivo observation was directly carried out at Treub Laboratory, The R & D Center for Biology, LIPI, mainly on final development aspects of flower: flowering process, anthesis periodicity and pattern,and pollen fertility. The results showed that commonly there was one of more than 20 spikelets in a spike anthesized perday. Final development stage began to be distinguishable from 6.00 or 7.00 am of anthesis day. Anthesis was always begin after 02.00 pm where the earliest was occurred at 02.04 while the latest was 02.55 pm and consist at least of three stages as is initiation, half and full anthesis.The initiation stage was remarkable by calyx breakage,divided into two types of breakage: -type A (directly break, 58.33%) and -type B (indirectly break, 41.67%).The type B group tend to haa shorter duration of anthesis than type A.Generally this variety of ginger has some negative floral characters base on fertility and fruit or seed setting ability such as very low in anthesis frequency, relatively snort duration of anthesis and inefficient stigma anther locality.In other side, this variety also has positive characters of flower such as enough pollen fertility (32 - 45%), low level in flower abortion and never closing flower even at the of the anthesis process
PENGARUH BAP DAN NAA TERHADAP INDUKSI KALUS DAN KANDUNGAN ARTEMISININ DARI Artemisia annua L. Ragapadmi Purnamaningsih; Misky Ashrina
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.v10i4.766

Abstract

Malaria is a global health problem that threatens 300-500 million people and kills more than one million people annually.Artemisinin, a sesquiterpen secondary plant metabolite extracted from Artemisia annua L., is a promising and potent antimalarial drug which has a remarkable activity against chloroquine resistant to Plasmodium falciparum. To counter the present low content(0.01-0.5%) of artemisinin in A. annua L.is a limitation to commercial production of the drug and uneconomical chemical synthesis. A research was conducted to induce callus production by using Murashige-Skoog (MS) medium added with NAA (0, 0.5 and 1 mg/1) and BAP (0, 0.5 dan 1 mg/1) and also to produce artemisinin from the calli. Complete Randomized Design was used in the research. Callus cultures were induced from leaf explants of A. annua. The research reports succesful approach for production of artemisinin by callus cultures of A. Annua. Medium formulation of MS basal media added with plant growth regulators BAP 0.5 mg/1 and NAA 0.5 mg/1 give the best result for callus induction than others, with callus fresh weight 844,4 mg, artemisinin content 0.73%, dry weight 216.6 mg and total weight of artemisinin 1.58 mg.

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