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PEMAKAIAN Parmelia wallichiana TAYL DALAM PENENTUAN PENCEMARAN LOGAM DI WILAYAH MINTAKUL BURUZ BANDUNG

Biotika (Jurnal Ilmiah Biologi) Vol 3, No 2 (2004): Biotika Desember 2004
Publisher : Biotika (Jurnal Ilmiah Biologi)

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Abstract

The study of metals as atmospheric pollutant has been done in Bandung. Particularly observation was done at thallus of lichens of Parmelia wallichiana and metals accumulated by lichens. The metal contents of the lichen thallus from 6 stations observation have been measured by neutron activation analysis. The result of researches showed that Parmelia wallichina can accumulate metals such as Al, Co, Cr, Mn, Na, V, Cl, Fe, Hg, Rb, Sb, Sc, Th, Sm, Zn, dan Zr. The concentration of Al, Cr, Fe, Mn, Na, and V was high in thallus from Jamika area (West of Bandung). While the concentration of Sb and Zn was high in thallus from Alun-alun area (Central of Bandung ). The effect of metals contaminants to P. wallichiana have caused the colour of thallus changing from green (Dago Pakar area) to become pale green in polluted area. The metal pollution in atmospheric of Bandung have accured and was probably as followed: 1)High polluted areas: Jamika (West of Bandung). 2) Moderate polluted area: Alun-alun (Central of Bandung), Antapani (East of Bandung), and Mohamad Toha (South of Bandung). 3) Slight polluted area: Taman Sari (North of Bandung). 4)Clean air area: Dago Pakar .

BIOAKTIVITAS Ulva reticulata Forsskal. ASAL GILI KONDO LOMBOK TIMUR TERHADAP BAKTERI

Biotika (Jurnal Ilmiah Biologi) Vol 5, No 1 (2006): Biotika Juni 2006
Publisher : Biotika (Jurnal Ilmiah Biologi)

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The  bioactivity of Ulva reticulata Forsskal from Gili Kondo, East Lombok have done to Bacillus subtilis, Staphylococcus aureus, and Escherichia coli using Kirby Bauer paper disc method. The Completely Randomized Design using factorial form of 3 x 6  with four replication are selected in this experiment. The  data analysis used Analysis Varians and continued with Duncan’s test.  Parameters was measured to diversity of  Ulva  are total species were founded and diameter of  zona growth inhibition of bacterial test. The Research result showed that the crude extract of U. reticulata and its fractions contain secondary metabolites which have an antibacterial activity to all tested bacteria.The highest activity of antibacterial was founded in methanol extract of U. reticulasta wich concentration of 25 % gives inhibitioin zone of 8,69 mm. The 12.5 %  fractions of U. reticulata in  methanol showed inhibition zone growth bacterial is  8,40 mm and for 10 % of its in   n-hexane fraction gives growth  inhibition zone bacterial was  8,13 mm.

ANTIMIKROBIAL ARIEN (Hypnea cervicornis ) ASAL GILI KONDO TERHADAP Bacillus subtilis, Staphylococcus aureus & Escherichia coli.

Biotika (Jurnal Ilmiah Biologi) Vol 5, No 2 (2006): Biotika Desember 2006
Publisher : Biotika (Jurnal Ilmiah Biologi)

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To determine the bioactivity of the species Hypnea cervicornis J.Agardh a test was carried out by using crude extract and their fractions against a number of bioindicators like Bacillus subtilis, Staphylococcus aureus and Escherichia coli.  The bioactivity of H. cervicornis was tested using Kirby-Bauer Method.  The test showed that both the crude extracts as well as the fractions, on crude extract concentration 45 % - 55 %,  methanol fraction concentration 2,5 % - 12,5 % and n-hexane fraction concentration 1,25 % - 6,25 %, biologically active against the organisms used as bioindicators. As these extract and fractions of H. cervicornis with its bioactivity could open the opportunity for the use of H. cervicornis as an antibacterial bioactive agents.

TOKSISITAS BEBERAPA TUMBUHAN APOCYNACEAE PADA HATI DAN GINJAL MENCIT SWISS-WEBSTER

Biotika (Jurnal Ilmiah Biologi) Vol 2, No 2 (2003): Biotika Desember 2003
Publisher : Biotika (Jurnal Ilmiah Biologi)

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The research was conducted to detect the effect of flower, leaf and stem bark extracts from golden trumpet, yellow oleander and frangipani on the liver and kidney structure of swiss-webster mice, hence the most toxic plant among the tested plants can also be screened. Single dose extract from each plant (616,8 mg/kg bw) was suspended in CMC 0,5% and administered orally to the mice and fourth day  their body, liver and kidney  weight were measured, liver and kidney organ  were made into preparate using paraffin method and HE staining. The result showed  liver weight per body weight were significantly differ (p<0,05) in the treatment of golden trumpet leaf and frangipani flower and no change in the kidney weight . Level of the vary liver desruption  occurred in all of the treated mice. Severe desruption is detected in the treatment of stem bark yellow oleander and frangipani flower. There were a disruptions on the kidney tissue, in the form of hemorrhage, such as the occurrence of erythrocyte in the Bowman space, tubules and intertubules. Glomerulus diameter, Bowman space diameter and tubule cells observation on the kidney showed no significant differences with control. Based on the parameters for liver, frangipani, yellow oleander and golden trumpet is found to be most toxic plant respectively. Assay on the three types of plant indicate that  the most toxic plant is golden trumpet, whereas the most toxic part of the plant is the stem bark.

POPULASI DAN AKTIVITAS BEBERAPA JENIS NYAMUK DI DAERAH PROYEK PLTA CIRATA

Buletin Penelitian Kesehatan Vol 19, No 3 Sept (1991)
Publisher : Buletin Penelitian Kesehatan

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Mosquito population and some of the ecological aspects of the environment were studied in an observation conducted in seven villages around the Grata dam project area from April 1956 through March 1987. One of the aims of this study was to evaluate the impact of the dam project toward the mosquito population, as a part of environmental impact analysis, and also to observe development of other impacts that could be anticipated from the dam construction. Both human bait and light trap methods were used for mosquito collections. Statistical method of Index of Diversity of Shanon - Wiener, Summed Dominance Ratio, and chi-square test were utilized for data analysis. Eighteen mosquito species were found and twelve of them are known as vectors for some viral diseases: Culex vishnui, Cx. tritaeniorhynchus, and Cx. quinquefasciatus.

KEANEKAAN MIKROALGA AIR TAWAR DI ARBORETUM UNIVERSIAS PADJAJARAN JATINANGOR

Biotika Vol 13, No 1 (2015): BIOTIKA JUNI 2015
Publisher : Biologi Universitas Padjadjaran

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Penelitian mengenai Identifikasi Mikroalga dilakukan pada bulan Januari-Maret 2015 di Arboretum UniversitasPadjajaran Jatinangor-Sumedang, Jawa Barat. Metode yang digunakan adalah metode survey atau jelajahdi kawasan arboretum Universitas Padjadjaran, Jatinangor. Pengamatan dibawah mikroskop dilakukan dilaboratorium Taksonomi Tumbuhan, Departemen Biologi Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Padjadjaran menggunakan kunci determinasi menurut literature Buku Freshwater Algae Lucid Keys Carolina Key Website (2011) dan Freshwater algae : Identification and use as bioindicators (1950). Hasilpenelitian menunjukan jenis mikroalga dari divisi Bacillariophyta memiliki jenis yang paling banyak, disusul olehCyanophyta dan Chlorophyta, Euglenophyta, dan 1 jenis Rhodophyta. Berdasarkan indeks Shannon-Wiener, ratarataindeks keanekaan tertinggididaerah cekdam dengan ditemukannya 16jenis mikroalga, selainitu diperolehindekskesamaanjenis mikroalgapadastasiun1,2,3, dan4berkisar antara22,22%-35,48%yang dikategorikantidakmirip.

KARAKTERISASI DAN KEKERABATAN JANGGOT KAI (Usnea spp.) DI PRIANGAN

Indonesian Journal of Applied Sciences Vol 3, No 2 (2013)
Publisher : Universitas Padjadjaran

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Abstract

AbstractTaxonomic study of beard moss (Usnea spp) at Priangan, was carried out by using morphological, anatomical and chemicals characters. Sample have taken from five area, they are Jayagiri conifer forest (Bandung), Rancakalong conifer forest (Sumedang), Kamojang conifer forest ( Garut), Munjul conifer forest (Ciamis) and Cigorowong conifer forest ( Tasikmalaya). Morphological observation was done on thallus and anatomical observation in medulla, axis and ratio of cortex : medulla : axis. While chemical analysis was conducting by colour test and crystal test. The identification result founded the eleven species, i.e. Usnea baileyi, U.ceratina, U.cornuta, U.filipendula, U. flexilis, U. flexuosa, U.florida, U.glabrata, U.hirta, U. longissima and U. trichodea. Morphological characters that can be used for distinguished of eleven species of Usnea are medulla shape, axisshape, radius of cortex, radius of medulla and diameter of axis. Chemical characters distinguished are reagent K,C, KC and IKI. Based on that characters the key identification have made for Usnea species founded at Priangan and de3scription were arranged for genus and species level. Phenetic analysis done by using NTSY Spc versi 2.0, resulted a Dendrogram which the eleven species of Beard moss can be divided into three branches. The first branch consist of U.baileyi and U.ceratina, the second are U.cornuta, U.flexilis, U.florida, U. flexuosa and U.glabrata and the third branch branch consist of U.filipendula, U.hirta, U.trichodea and U.longissima. Key word : Characterization, relationship, Beard moss, Usnea , Priangan

EKSPLORASI INFORMASI KEANEKARAGAMAN JENIS, POTENSI DAN PEMANFAATAN TUMBUHAN BAHAN PESTISIDA ALAMI DIPROPINSIJAWA BARAT DAN BANTEN

BERITA BIOLOGI Vol 6, No 3 (2002)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

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Pests, diseases and weeds are considered as organisms that limiting the agricultural productivity. Losses of agricultural productivity originated from the attack of these organisms may be up to 40% to 60%; sometimes in several cases failure of harvests occurred. So far, chemical (synthetic) pesticides are used to control the attack of these organisms. Meanwhile, the use of synthetic pesticides in fact, creates many negative effects on both biotic and abiotic environments, such as pollution against terrestrial and aquatic environments, even killing the vertebrates and husbandry animals, predatory insects, and some economic insects (insect species that benefit to the life of man). Due to the losses created by utilization of synthetic pesticides, therefore a number of scientists and farmers initiated to turn their attention to use the natural pesticides (directly originated from plants) under the light of back to nature principle, although this step is seems to be less effective.Some natural pesticides practiced by West Javan farmers are likely almost disappeared and difficult to be found in the field. It is important to mention some species here such as cujete/kalabas (Cresentia cujete), bratawali (linospora tuberculata), bitter yam/gadung (Dioscorea hispida), sambiloto {Andrographis paniculata), sarikaya {Annona squamosa) and so many more. Some weed species are known used by farmers as natural pesticide like saliara {Lantana camara), ki pahit (Tithonia diversifolia), alang-alang (Imperata cylindrical) and badotan {Ageratum conyzoides). This research is aimed to inventory plant species used by farmers as natural pesticides as to reduce the reliance on synthetic pesticides. Methods of approach to the problem are by library studies (journals, proceedings of seminars, notes etc), field survey and interview to farmers of several districts (Kabupatens) in West Java and Banten Provinces i.e. Sumedang, Majalengka, Sukabumi, Garut, Pandegelang and Serang. Result shows that there are still 130 plant species used as natural pesticides, and 42 natural (plant based raw materials) pesticide formulations used by farmers.