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BERITA BIOLOGI
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Articles 2,125 Documents
STUDI BUDIDAYA JAMUR Lactarius sp. DI WAMENA, IRIAN JAYA Latupapua, HID; Subowo, YB
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 | Full PDF (396.192 KB) | DOI: 10.14203/beritabiologi.v4i4.1272

Abstract

Research on the cultivated of mushroom of Lactarius gp.had been conducted in Wamena,Jayawijaya district of Irian Jay a. There were 6 kinds of media which consisted of 2 kinds of sawdust wood (Nothofaeus sp.and Paraserianthes falcataria).Each sawdust wood added in 3 level of nutrition (0%, 50% and 100%).The experimental design which had been used was factorial which arranged with completely randomized design by using 10 replications.The result showed that the micellia had grown on all of media.However,the fruiting body formation occured on the media which made of P.falcataria sawdust added in 0%; 50% and 100% nutrition and on the Nothofagus sp sawdust added in 100% nutrition.The highest yield of fruiting body had been showed on P. falcataria sawdust medium added in 100% nutrition.
STUDI FITOKIMIA Baeckea frutescens L: PENGARUH FAKTOR LINGKUNGAN TERHADAP KOMPOSISI KIMIA MINYAK ATSIRI Murningsih, Tri
BERITA BIOLOGI Vol 9, No 5 (2009)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1095.297 KB) | DOI: 10.14203/beritabiologi.v9i5.1994

Abstract

Isolation of two essential oils of Baeckea frutescens L. leaves from different locations (Yogyakarta and Semarang) was done by hydrodistilation. The chemical composition of the oils were analysed by GC-MS. The oils were found to possess chemical compositional differences and considerable variation in the levels of each chemical components, suggesting the existence of chemical varieties.The oils were dominated by monoterpene i.e 8-cineole (22,08-22.67%) and P-pinene (17,98-29.22%).Comparison of chemical composition of the oils analyzed in this study and oils from literatures was conducted to study the effect of environmental factor on the essential oil composition.The result showed that temperature, irradiance, photoperiod and altitute factors influence the chemical composition of essential oils. Tasmanone, a non-terpenic triketone only appears in the essential oils from Quang Binh province (north Vietnam), that have extreme environmental condition.
UPAYA DOMESTIKASI TANGKASI(Tarsius spectrum) MELALUI OPTIMALISASI PEMBERIAN PAKAN SECARA GRADUAL DAL AM PENANGKARAN Kiroh, Hengki J
BERITA BIOLOGI Vol 9, No 6 (2009)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (403.714 KB) | DOI: 10.14203/beritabiologi.v9i6.840

Abstract

This research was conducted to change natural feeding behavior of Tarsius (Tarsius spectrum) using fresh life insect into fresh meal material as new introducing feeding material by gradually optimal feeding system in wire netting pen.This research was focused on preference of Tarsius into fresh meal as new introducing feeding material and nutrient consumption.Result showed that Tarsius was able to be interested in different fresh meal as new introducing feeding material within relatively short time and to be adaptable on different nutrient consumption. Therefore, it can be concluded that (1) domesticating process of Tarsius was able to change their natural feeding behavior using fresh life insects into fresh meal material as new introducing feeding within 27 day; (2) Average nutrient consumption of Tarsius for new introducing feeding varied one to each other in wire netting pen.
AKTIVITAS DAN PERGERAKAN LUTUNG MERAH (PRESBYTIS RUBICUNDUS MULLER) DI CAGAR ALAM TANJUNG PUTING KALIMANTAN TENGAH SUPRIATNA, JATNA
BERITA BIOLOGI Vol 2, No 5 (1979)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (326.3 KB) | DOI: 10.14203/beritabiologi.v2i5.1401

Abstract

Keanekaiagaman primata Indonesia meiupakan suatu kekayaan yang tidak terdapat di negaia lain. Kawasan Indonesia mempunyai primata mulai dari yang berevolusi iendah yaitu Tarsius bancanus sampai yang berevolusi tihggi seperti orangutan (Portgopygmaeus). Beberapa primata ada yang bersifat endemik, seperti lutung meiah di Kalimantan (Davis1962, Medway 1970, Stott & Selsor 1961).Tempat hidup lutung meiah, yaitu pulau Kalimantan, pada dasa waisa sekaiang ini sedang giat dieksploitasi.Eksploitasi diketahui banyak menimbulkan kerugian terhadap penghuninya, misalnya adanya emigrasi dan kepunahan tidak langsung. Beberapa hewan telah menunjukan kelangkaan di daerah yang diekploitasi hutannya.Lutung merah sebagai hewan arboreal mungkin sekali akan terganggu oleh adanya eksploitasi hutan tersebut.Oleh karena kerusakan hutan mungkin akan berpengaruh terhadap tingkah laku lutung, maka penelitian mendasar terhadap hewan ini perlu dilakukan Untuk memulainya dilakukan penelitian awal dalam taraf pengamatan aktivitas, pergerakan dan beberapa segi tingkah laku lutung. Penelitian ini diharapkan dapat membantu cara pelestarian hewan ini.
PENGARUH PEMBERIAN EKSTRAK Saccharomyces cerevisiae Hansen TERHADAP KANDUNGAN GOSIPOL PADA KULTUR KALUS Gossypium hirsutum L. Sitinjak, Rama Riana; Siregar, Arbayah H; RE, Rizkita
BERITA BIOLOGI Vol 5, No 2 (2000)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (367.19 KB) | DOI: 10.14203/beritabiologi.v5i2.1133

Abstract

This study concentrated on the effect of Saccharomyces cerevisiae Hansen extract on gosipol content of Gossypium hirsutum L callus cultures. There were many ways commonly used to obtain high secondary metabolites product by using tissue culture,i.e. elicitation.The objective of this study was to increase the production ofgossypol on G. hirsutum callus cultures using elicitor derived from S. cerevisiae.The callus grew optimally and produced gossypol on Linsmaierand Skoog (LS) medium with the addition of 10 M NAA and 10 M 2,4-D. Callus derived from cotyledon was subcultured five times.Callus was then elicited with elicitor derived from autoclaved S. cerevisiae and concentration of elicitor tested were 0.5, 1.0 and 2.5% (b/v). The harvesting times were 0, 2, 4, dan 6 days after elicitation. The gossypol was analyzed qualitatively and quantitatively by using High Performance Liquid Chromatography (HPLC).Gossypol content was influenced significantly by concentration of elicitor and harvesting time.The maximum ofgossypol content was obtained on the 4 day after elicitation i.e. 469.233 ± 2.332 pg/g dry weight in the elicited callus of G. hirsutum.
MEMPERINGATI TIGA ABAD LINNAEUS Asmarayani, Rani
BERITA BIOLOGI Vol 8, No 4(a) (2007)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (188.112 KB) | DOI: 10.14203/beritabiologi.v8i4(a).1534

Abstract

One of the scientists,whose name is still inherently kept in scientists mind nowadays, is Carolus Linnaeus. He is known as the Father of Taxonomy who has laid down the principles of taxonomy. His contributions to this discipline were inevitably giving new paradigm. Commemorating his such great and invaluable contributions on science today after 300 years, a reflection for tracking his journey, history of life and contributions to science - especially in Indonesia, is presented in this paper.
APLIKASI VAKSIN Streptococcus agalactiae UNTUK PENCEGAHAN PENYAKIT STREPTOCOCCOSIS PADA BUDIDAYA IKAN NILA (Oreochromis niloticus) [Application of Streptococcus agalactiae vaccine to prevent streptococcosis on tilapia culture, Oreochromis niloticus] Taukhid, Taukhid; Lusiastuti, Angela Mariana; Sumiati, Tuti
BERITA BIOLOGI Vol 13, No 3 (2014)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (110.857 KB) | DOI: 10.14203/beritabiologi.v13i3.662

Abstract

The research with the aim to know the effectivity (yield gap) of the application of Streptococcus agalactiae vaccine (pure whole cell) in prevention of streptococcosis on tilapia (Oreochromis niloticus) culture has been carried out. The isolate of S.agalactiae – N14G was used as a master seed on vaccine production. Priming vaccination was administered by immersion method, and booster vaccination was taken th place two months latter by oral method. Challenge test at the lethal dose (LD50) against active bacteria was done at 14 days post booster vaccination, and observation was taken place for 14 days post artificial infection. The results of the research showed that the highest survival rate and relative percent survival (RPS) was found in group treated with Streptovac vaccine (S. agalactiae and A. hydrophila combination) (65.58% and 35.36%) followed by S. agalactiae vaccine (52.08% and 10.01%). The lowest survival rate was found in control group (46.75%). The result of confirmation effectivity of the vaccines by challenge test in the laboratory showed that the highest survival rate and relative percent survival (RPS) was found in S. agalactiae vaccine (50.00% dan 37.50%) followed by Streptovac vaccine (40.00% and 25.00%), and the lowest survival rate was found in control group (20.00%). Vaccination is better than the non vaccinated.
KELIMPAHAN DAN DISTRIBUSI TIGA JENIS IKAN BOTIA DI DAS SIBAU DAN DAS EMBALOH, KAPUAS, KALIMANTAN BARAT (Abundance and distribution of three species of Botia in Sibau and Embaloh Watershed) Rachmatika, Ike
BERITA BIOLOGI Vol 4, No 2&3 (1998)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (593.314 KB) | DOI: 10.14203/beritabiologi.v4i2&3.1286

Abstract

The study on the abundance and distribution of three species of botia namely B.hymenophysa Bleeker, B.macracantha (Bleeker,1852)W B.reversa (Roberts,1989) was conducted in Sibau watershed (from June 21 to July 10 1996) and in Embaloh watershed (from November 21 to December 10,1996 and from September 5 to September 25, 1997).It was found that the abundance of each B.hymenophysa, B.macracantha andB.tevctsz was not significant different in these two watershed.Among the fish species collected, these three species of Botia can b categorized as the group offish with low abundance.B.hymenophysa is the most widely distributed fish among three species o/Botia in these two watersheds.In these watersheds,this fish was more distributed in tributary sites than in mainstream sites of Embaloh and Sibau river.On the other hand, the distribution pattern of B.reversa in these watersheds was different. In Sibau watershed, this fish is more distributed in mainstream sites, in Embabh watershed however, this fish was more distributed in tributaries sites.In some localities the distribution of B.hymenophysa and B.reversa are overlaps. In Sibau river, B.macracantha was found both in mainstream sites and its tributary, but in Embabh river, it was found only in a tributary site. It was also found that these three Botia could co-exist with other species.
()-(2 R,3S)-DIHIDROKUERSETIN, SUATU PRODUK BIOTRANSFORMASI (-)-EPIKATEKIN OLEH JAMUR ENDOFIT Diaporthe sp. E Agusta, Andria
BERITA BIOLOGI Vol 9, No 4 (2009)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (802.608 KB) | DOI: 10.14203/beritabiologi.v9i4.2009

Abstract

The endophytic fungus Diaporthe sp.E show a unique ability to biotransform (-)-epicatechin into (-)-(2R,3R,4R)-leucocyanidin in a semisynthetic medium. Extension of the incubation time gave a major product (-)-(2R,35)-dihydroquercetin which was identified by spectroscopic methods.
PENGARUH NAUNGAN TERHADAP PERTUMBUHAN BIBIT PULAI {Alstonia scholaris (L.) R.Br) Juhaeti, Titi
BERITA BIOLOGI Vol 9, No 6 (2009)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (294.815 KB) | DOI: 10.14203/beritabiologi.v9i6.854

Abstract

Pulai {Alstonia scholaris (L.) R.Br famili Apocynaceae} is one of the prospective plants due to its multipurpose such as for construction, medicine and handicraft. It is known that pulai can be propagated by seed, cutting or grafting. To have the best performance of seedling in the nursery, we have to study many aspects. One of that aspect is shading tolerance of pulai seedling. This research was conducted to study the effect of 0, 25, 50 and 75% shading on the growth of pulai seedling. The result showed that the best growth of pulai seedlings is on the 0% shading. But in 25-50% shading the growth of pulai seedling are still in good performance, while in 75% of shading the growth have been decreased.

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