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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
 103   104   105   106   107 
PENINGKATAN PERTUMBUHAN PADI VAR CIHERANG SETELAH DIINOKULASI DENGAN Azospirillum MUTAN MULTIFUNGSI PENAMBAT N2, PELARUT P DAN PENGHASIL FITOHORMON INDOLE ACETIC ACID (IAA). Eny Ida Riyanti; Edy Listanto
BERITA BIOLOGI Vol 16, No 1 (2017)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v16i1.2171

Abstract

Modern agriculture rellies on the application of fertilizer to enhanched plant growth. Excessive application of chemical fertilizers in the long term will decrease soil fertility, therefore the use of biological fertilizers is expected to reduce the negative impact. The aim of this study was to determine the effect of multi-functional Azospirillum for N2-fixation, phosphate solubilizer  and producing phytohormone Indole Acetic Acid (IAA) on the growth of rice plants Ciherang in the pot experiment conducted in the BB Biogen’s greenhouse. Two treatments were tested: types of inoculation (not inoculated, were inoculated with the wildtype AjB 6.4.1.2 and inoculated with mutant isolates AJM 3.7.1.14), and 4 levels of fertilizer application (not fertilized, a quarter dose of paddy fertilizer recommendations, a half dose of fertilizer rice in the rice fields, and the appropriate dose of fertilizer in paddy fields). Azospirillum used is wildtype isolate AjB 6.4.1.2 and mutant isolate AJM 3.7.1.14 isolated and and mutated in BB Biogen. Ciherang rice seed inoculated with Azospirillum on the cell density of 106 cells / ml at the different seedlings tub. After the age of 14 days after planting, the seedlings were transferred into pots with three plants per pot. Parameters measured were: plant height, number of tillers, number of panicles per clump, fresh weight and dry panicles per clump, weight of 100 grains, and the content of N and P stover. Results show that inoculantion, affect significantly on the number of panicles per hill, grain weight per panicle and the dry weight of grains per panicle. 
KAJIAN BOTANI, EKOLOGI DAN PENYEBARAN POHON CENDANA (Santalum album L.) Soedarsono Riswan
BERITA BIOLOGI Vol 5, No 5 (2001)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v5i5.1464

Abstract

Cendana (Santalum album L.) yang merupakan flora maskot Propinsi Nusa Tenggara Timur (NTT) adalah pohon yang mempunyai nilai ekonomi tinggi. Jenis pohon ini tumbuh secara alami di propinsi ini dan terutama berasal dari Pulau Timor dan P. Sumba. S. album merupakan salah satu jenis dari marga Santalum dan termasuk dalam suku Santalaceae. Sejarah mencatat bahwa Cina merupakan negara utama yang membeli kayu cendana ini. Perdagangan kayu cendana dari P. Timor dan P. Sumba ini telah berjalan sejak abad ke-3.Dalam tulisan ini akan dibahas asal dan penyebaran, botani, ekologi dan sejarah perdagangan pohon cendana.
BIODEGRADASI SENYAWA ORGANIK DAN AMONIUM DALAM LIMBAH CAIR INDUSTRI MINYAK KELAPA SAWIT DENGAN SISTEM PERTUMBUHAN MIKROORGANISMA TERLEKAT Dwi Agustiyani; Hartati Imamuddin
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 | DOI: 10.14203/beritabiologi.v5i2.1148

Abstract

Efficiency of biodegradation of organic carbon and ammonium of sawit palm oil industry wastewater was investigated by using batch reactor with fluidized porous support particles.Two bioreactors, each had an effective volume of 3.0 L, were operated in parallel. Bioreactor-l is a batch reactor with fluidized porous support particles and bioreactor-ll is a suspended growth reactor.The wastewater consisting of 1500-2000 mg/L COD and 50-60 mg/L nitrogen was fed by fill and draw mode with one cycle per day,where 1.5 L treated water was drawn before adding the new wastewater.Efficiency of COD degradation and nitrification were calculated by measuring concentration of COD, ammonium-N, nitrite-N and nitrate-N.The experimental results showed that efficiency of COD degradation and nitrification tend to be higher in the bioreactor-l than in the bioreactor II.The highest efficiency of COD degradation in the reactor-l was 83.7% and in the bioreactor-ll was 63.44 %.The highest efficiency of nitrification in the bioreactor-l and bioreactor-ll was 76.72% and 56%, respectively.Ammonium removal occurred in the bioreactor might not only by biological nitrification, but also by other phisical or chemical processes.
ANATOMI HELAIAN DAUN MURRAYA SPP. (RUTACEAE) DI JAWA Eka Fatmawati Tihurua; Inggit Puji Astuti; Rugayah Rugayah
BERITA BIOLOGI Vol 11, No 3 (2012)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v11i3.511

Abstract

Leaf anatomy of four species of Murraya (Rutaceae) have been examined. Murraya spp. leaf has dorsiventral type. Anticlinal epidermis cell wall present with straight-undulate and square-irregular shaped. Anomocytic stomata distribute only in the lower surface and simple trichome spread in both leaf surfaces except M. crenulata (Turz.) Oliv. which has trichome only in the lower surface. Mesophyll consist of 2 or more layers of palisade tissues in the leaf upper part and sponge below, but M. exotica L. has palisade tissue in both leaf side. Oil gland distribute in the mesophyll. Crystal present as prismatic (cuboid) and drusse type.
SIFAT PROTEKSI EKSTRAK AIR PANAS TEH {Camellia sinensis (L.) Kuntze} HIJAU PADA KHAMIR Candida tropicalis YANG DIPERLAKUKAN DENGAN PARACETAMOL Heddy Julistiono
BERITA BIOLOGI Vol 10, No 6 (2011)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v10i6.1943

Abstract

In order to develop yeast Candida tropicalis as a model cell for evaluation of substance having anti- or pro-oxidant activity in cell level, the effect of hot water tea {Camellia sinensis (LJ Kuntze) extract on peroxidized lipids, a marker of oxidative stress and cell mortality in the yeast caused by paracetamol has been evaluated. Incubation of yeast cell in the presence of 1.38 % green tea for 2 h decreased cell viability followed with increasing of peroxidized lipids, whereas 0.27 % green tea caused increasing of peroxidized lipids without causing cell death.Yeast cell was not affected by 0.1 % green tea. Incubation of yeast cell with presence of 0.15 % (g/v) paracetamol for 2 h did not cause cell mortality, however content of peroxidized lipids increased significantly. In the presence of higher dose of paracetamol (0.3 %) cell viability remarkably decreased and followed with increasing of peroxidized lipids significantly. Green tea of 0.1 % increased cell viability of cells treated with 0.3 % paracetamol while peroxidised lipids decreased. The data indicated that high dose of paracetamol caused oxidative stress in yeast cells, while green tea with lower concentration might protect paracetamol toxicity due to its antioxidant property. Although the antioxidant property, high dose of green tea could cause oxidation due to its pro-oxidant activity. In conclusion, yeast C. tropicalis could be potentially used as a model cell to evaluate substances having antioxidant property in cell level.
KEBERADAAN KAPANG PADA GAPLEK: PENGARUH TERHADAP KUALITAS DAN DAYA SIMPAN Titin Yulineri; Riani Hardiningsih; Suciatmih Suciatmih
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.v4i1.1291

Abstract

A study was carried out to find out contaminated fungi on dried cassava.There were two experiments: I. isolation and identification of fungi on dried cassava and 2. inhibiting capacity of some kinds of some kinds of solution on growth of fungi.In experiment 2, there were three treatments: I.solution of garlic; 2.solution of salt and 3. vinegar.Results showed that dominated fungi on dried cassava were Aspergillus niger. Pen/ol/iumsp.and Rhizopussp. Between three treatments in experiment 2, the most effective solution to increase quality and storage capacity of dried cassava was solution of garlic.
EKSTRAKSI MINYAK NABATI SECARA FERMENTASI Yati Sudaryati Soeka
BERITA BIOLOGI Vol 9, No 3 (2008)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v9i3.789

Abstract

Method of extracting vegetable oil from peanut and soybean cream through enzymatic fermentation was studied. Creams were incubated with respective strains of Bacillus sublilis, Candida rugosa and Pseudomonas aerogenes separately under mild condition that allowed for production of oil at pH 4.5-6.5 and room temperature overnight. A considerably amount of oil could be extracted from media containing coconut and peanut cream, however, none from soybean cream.The oil recovery was about 10 to 30% from approximately 46 to 52% total fat contained in the respective substrates.Those oil were extracted by application of culture filtrate of B. subtilis and C. rugosa exhibited higher linoleic and Iinolenic acid (0.50 to 0.61 % and 0.31 to 0.32% respectively), compared to those were of P. aerogenes lipase (0.20% and 0.13%, respectively).Further investigation was aimed to study the capacity of microbial strains on enzymatic reaction of fatty acid to fatty acid ester by incubating extracted oil in the present of organic solvents.
ETNOBOTANI DAMAR PADA ORANG RIMBA DI TAMAN NASIONAL BUKIT DUABELAS Rana Rio Andhika; Muhadiono Muhadiono; Iwan Hilwan
BERITA BIOLOGI Vol 15, No 1 (2016)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v15i1.2863

Abstract

Orang Rimba have local knowledge about utilization of dammar in Bukit Duabelas National Park .The research was aimed to record the type of dammar and explore local knowledge Orang Rimba utilizing dammar. Data were collected through interviews, participant observation and documentation . Data analysed as qualitative descriptive. There were 15 plant species whose resin were used by Orang Rimba i.e Dipterocarpus baudii, Dipterocarpus hasseltii, Hopea mengarawan, Hopea dryobalanoides, Dacryodes rugosa., Santiria laevigata, Shorea bracteolata, Parashorea aptera, Canarium pilosum, Shorea retinoides, Shorea cf. singkawang, Santiria dacryodifolia, Shorea multiflora dan Sarong (Trigona spp). Dammar were used  as a fuel, medicine, adhesive material and traditional rituals. General use of dammar was for traditional Torch lighting (blebayon).
RAGI TAPAI BENTUK BUBUK ELIDAR NUR; SUSONO SAONO
BERITA BIOLOGI Vol 2, No 9&10 (1984)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v2i9&10.1420

Abstract

Ragi tapai biasa disebut juga ragi pasar karena mudah dibeli di pasar. Pembuatannya biasanya dilakukan tidak secara steril, menggunakan peralatan sederhana, serta memakai tepung beras sebagai bahan dasar utama dan beberapa macam rempah-rempah sebagai bahan dasar tambahan.Bahan dasar utama berfungsi sebagai bahan pembawa (carrier) jasad renik yang diperlukan kehadirannya, sedangkan bahan dasar tambahan kemungkinan berfungsi sebagai pencegah kehadiran jasad renik yang tidak dikehendaki (Saono et al. 1974; Saono 1982).Karena dalam pembuatan ragi tapai biasanya tidak digunakan biang (starter), maka sumber utama jasad renik adalah lingkungan tempat pembuatannya dan bahan-bahan dasar yang digunakan
EFEK HYPOGLIKEMIK EKSTRAK ALKOHOL HERBA MENIRAN (Phyllanthus niruri L.) PADA KELINCI PUTIH JANTAN Chairul Chairul; Yuliasri Jamal; Zuherti Zainul
BERITA BIOLOGI Vol 5, No 1 (2000)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v5i1.1103

Abstract

A study on the influences of alcohol extract of Meniran or Phyllanthus niruri L. (Euphorbiaceae) to blood glucose concentration in rabbits (Oxytolagus cuniculus) had been carried out using glucose tolerance method.The extract was administered orally at 10, 20, 30, 40 and 50 mg/kg BW.Prior to tfie extract administration, all rabbits were put on hyperglycemic condition by injecting glucose solution intravenally at dose of 0.5 g/kg BW.The blood glucose concentration was measured every one hour starting at 2 hours before and until 7 hours after administration. Antidiabetic drug,tolbutamid 250 mg/kgBW.was used as control.The results indicated that extract with dose at 30 mg/kg BW gave a hypoglycemic effect similar to control (Tolbutamid). The blood glucose decreased regularly as the extract dose being higher.Using statistical analyses showed significant differences among the groups, especially after the 2 and 3 hours of treatment (P<0.05).

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