cover
Article Per Year (5 Year)
All
Home Page
OAI Link
Editorial Team
Contact
Reviewer
Google Scholar
Contact Name
Eko Didik Widianto
Contact Email
rumah.jurnal@live.undip.ac.id
Phone
+6281390576830
Journal Mail Official
jurnalbiologi@live.undip.ac.id
Editorial Address
Departemen Biologi, Fakultas Sains dan Matematika, Universitas Diponegoro, Semarang
Location
Kota semarang,
Jawa tengah
INDONESIA
Jurnal Akademika Biologi
Published by Universitas Diponegoro
ISSN : -     EISSN : 26219824     DOI : -
Core Subject : Science,
Biochemistry, Genetics & Molecular Biology
Jurnal Akademika Biologi diterbitkan oleh Departemen Biologi Fakultas Sains dan Matematika Universitas Diponegoro Semarang. Jurnal ini sebagai media publikasi hasil karya ilmiah lulusan S1 Departemen Biologi. Jurnal Akademika Biologi menerima artikel-artikel yang berhubungan dengan bidang ilmu biologi.
Arjuna Subject : Biokimia, Genetika dan Biologi Molekuler - Biokimia, Genetika dan Biologi Molekuler (Lain-Lain)
Articles 8 Documents
 1 
Search results for , issue "Vol. 4 No. 4 Oktober 2015" : 8 Documents clear
Distribusi Vertikal Diatom Epipelik di Muara Sungai Banjir Kanal Timur Semarang Edwin Nurimansyah; Tri Retnaningsih Soeprobowati; M Murningsih
Jurnal Akademika Biologi Vol. 4 No. 4 Oktober 2015
Publisher : Departemen Biologi, Fakultas Sains dan Matematika Undip

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (79.768 KB)

Abstract

Diatom is microalgae that has a wide distribution and cosmopolite. Diatom can be used as bioindicator of environment changes in the past, because of its sensitivity to habitat condition and its characteristic which can be fossilize. This research was conducted in Muara Sungai Banjir Kanal Timur Semarang. This location selected on the tide area. This reasearch aims to assess the abundance, diversity, and equal distribution of fossils diatom The research begins by taking samples of sediment to a depth of 34 cm and then sliced per-6 cm.The result was found 36 species diatom, the most abundant species is Pinnularia borealis Ehrenberg. Diversity index between 1.84 – 2,58 shows that the ecosystem in Muara Sungai Banjir Kanal Timur Semarang has environmental conditions are less stable until rather stable based its benthic diatom communities. Distribution the individuals number of each species evenly distributed on each layer. The dominance of diatom was found are Pinnularia (Pinnularia biceps, Pinnularia rabenhorstii, Pinnularia borealis), it’s dominance in each layer. Keywords: bioindikator, diatom, muara Sungai Banjir Kanal Timur Semarang.
Pertumbuhan Tunas Tacca leontopetaloides L. Hasil Mikropropagasi Setelah Pemberian Radiasi Sinar Gamma Co60 dan Hormon Tumbuh yang Berbeda Darnia Astari Parastiti; Endang Kusdiyantini; Endah Dwi Hastuti; Betalini Hapsari; Tri Muji Ermayanti
Jurnal Akademika Biologi Vol. 4 No. 4 Oktober 2015
Publisher : Departemen Biologi, Fakultas Sains dan Matematika Undip

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (238.763 KB)

Abstract

Taca  (Tacca  leontopetaloides  L.)  is  one  of  the  plant  family Dioscoreaceae  that  contain compounds   glikosida   flavonoid   called   taccalin   and   taccalonoides   who   potential   as antioxidants. Taka (Tacca  leontopetaloides L.) specifically has not been cultivated, grown only a limited area around the beach, it is necessary to plant vegetative propagation system faster with more results in tissue culture systems. This study aims to determine the growth and the antioxidant potential shoots Tacca leontopetaloides L. mikropropagasi results after administration  of  Co60  Gamma  ray  radiation  and  different  growth  hormones.  Research method  uses  completely  randomized  factorial  design  (RAL)  with  4  treatment  doses  of Gamma radiation Co60 is 0 Gy, 5 Gy, 20 Gy, and 30 Gy and 3 treatment of growth hormone that MSo, MSo + 0,5 BAP and MSo + 0,5 Kinetin with 3 replicates. Shoots taka from results mikropropagasi grown in  vitro and has been irradiated with Co60 Gamma rays. Parameters tested were growth of shoots, amount of leaves, till, roots and wet weight taka. The results showed  that  Gamma radiation  Co60  and  plant  regulator  cytokinin  effect  on  shoots  taka, amount of tillers, leaf, root and wet weight taka. Keywords: Taka (Tacca leontopetaloides L.), Mikropropagation, Growth Hormone.
ANALISIS FILOGENETIK Curcuma zedoaria (TEMU PUTIH) BERDASARKAN GEN INTERNAL TRANSCRIBED SPACER (ITS) Yuliandini Pangestika; Anto Budiharjo; Hermin Pancasakti Kusumaningrum
Jurnal Akademika Biologi Vol. 4 No. 4 Oktober 2015
Publisher : Departemen Biologi, Fakultas Sains dan Matematika Undip

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (93.193 KB)

Abstract

Curcuma zedoaria belongs to Zingiberaceae family which has a local name white turmeric. This local name is not only used by C. zedoaria, but also used by C. mangga and Kaempferia rotunda. This problem leads to incorrect selection of ingredients, so that the therapeutic effect can not to achieved. Therefore phylogenetic analysis is important to differentiate three types of these plants. Phylogenetic analysis illustrated the taxonomic classification of organisms based on evolutionary history. Sequence which used in this study was Internal Transcribed Spacer (ITS). ITS flanked by the coding region of 18S, 5.8S and 26S rDNA on each unit in a series of chromosomes. Aimed of this study was to perform phylogenetic analysis of C. zedoaria which from Indonesia based on ITS gene sequences. Methods included were DNA isolation using Doyle and Doyle method (1987), ITS gene amplification using ITS1 and ITS4 primer, analysis of ITS gene sequences using Basic Local Aligment Search Tool (BLAST), and construction of phylogenetic trees using MEGA6 by neighbor-joining tree method and bootstrap method with 1000 replications. DNA isolation resulted DNA concentration of 853 ng/µl and purity value of 2.17. Amplification of  ITS region resulted in 700 bp product. Result of homology search showed C. zedoaria had homology with C. zedoaria voucher JLS 71432 clone 4 from Czezh Republic with 72 % homology and 3 % gap. Phylogenetic analysis showed that white turmeric collected in this study was C. zedoaria and different from C. mangga and K. rotunda. This study concluded that C. zedoaria different from C. zedoaria from the Czech Republic, however both were in a Curcuma monophyletic group.Keywords: Curcuma zedoaria, Internal Transcribed  Spacer,  phylogenetic, white turmeric
Hubungan Faktor Fisika-Kimia Perairan Terhadap Kelimpahan Moluska di Area Keramba Jaring Apung Sistem Polikultur Teluk Awerange, Sulawesi Selatan Amalia Aininnur; Sapto Purnomo Putro; Fuad Muhammad
Jurnal Akademika Biologi Vol. 4 No. 4 Oktober 2015
Publisher : Departemen Biologi, Fakultas Sains dan Matematika Undip

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (239.076 KB)

Abstract

Fish farming using floating cage has been conducted for a long time in Indonesia. Despite the benefits of aquaculture to meet the needs of the human protein, aquaculture has potential impact on the aquatic environment, especially due to the impact  of  organic  enrichment.  This  study aims  to  determine  the  relationship  of  water  physical-chemical  on  the abundance of mollusks as a biological agent to determine the level of environmental disturbance. This research was conducted in the waters of the Awerange Gulf, South Sulawesi. Mollusks samples were taken from two stations, namely the reference area and polyculture cage area with twice the sampling time and three   replicates. Abiotic and biotic relationships conducted using multivariate approach (Principal Component Analysis / PCA, BIO-ENV) using Eucladian Distance matrix. Based on the results, there were 15 species consisting of 14 families and 2 classes (gastropods and bivalves). Families were most prevalent in both sites was Turritellidae. In general, water quality in the Awerange Gulf is considered normal at both locations. Results of ordination using PCA on abiotic factors indicated that the stations between reference area and polyculture cage area are clustered, implying the difference of both sites. BIO-ENV analysis results indicates that the abiotic factors that most influence the distribution and abundance of molluscs in the Awerange Gulf were DO, Carbon and Nitrogen contain (r = 0.457; BIO-ENV). Keywords : Mollusk, Polyculture Cage, Awerange Gulf, Abiotic Component
Optimasi Linamarase pada Umbi Singkong (Manihot esculenta Crantz) dan Umbi Gadung (Dioscorea hipsida Dennst) dengan Variasi Suhu dan pH yang Berbeda Yoni Anggun Endah Kurniati; W Wijanarka; Endang Kusdiyantini
Jurnal Akademika Biologi Vol. 4 No. 4 Oktober 2015
Publisher : Departemen Biologi, Fakultas Sains dan Matematika Undip

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (103.923 KB)

Abstract

Singkong (Manihot esculenta Crantz) dan gadung (Dioscorea hipsida Dennst) merupakan bahan pangan yang memiliki kandungan karbohidrat tinggi. Singkong dan gadung sering dikonsumsi oleh masyarakat Indonesia sebagai pengganti nasi. Kedua bahan pangan ini berpotensi menyebabkan keracunan sianida apabila tidak diolah dengan baik. Umbi singkong dan gadung mengandung enzim hidrolitik yaitu linamarase (EC 3.2.1.2.1) dan substrat linamarin. Senyawa sianida dihasilkan akibat adanya hidrolisis linamarase dengan linamarin pada kondisi pH>6. Penelitian ini bertujuan untuk mengetahui kondisi optimal linamarase dari umbi singkong dan gadung. Parameter yang diukur adalah kadar sianida menggunakan spektrofotometri λ= 510 nm. Penelitian ini dilakukan secara eksperimental menggunakan Rancangan Acak Kelompok (RAK) pola faktorial. Faktor pertama optimasi linamarase meliputi suhu 350C, 400C, dan 450C, sedangkan faktor kedua meliputi pH 6.5, 7.0, dan 7.5. Hasil penelitian menunjukkan bahwa kondisi optimal linamarase singkong pada suhu 450C dan pH 7,5. Kondisi optimal linamarase gadung  pada suhu 350C dan  pH 7.5.Kata kunci : Singkong (Manihot esculenta Crantz), Gadung (Dioscorea hipsida Dennst), Linamarase, Linamarin, Sianida 
Kandungan Proksimat dan Daya Pengikatan Tepung Iles-Iles (Amorphophallus oncophylus) Terhadap Aflatoksin Sebagai Upaya Pencarian Bahan Pengikat Alternatif pada Pakan Sigit Hananto; Sri Pujiyanto; Endang Kusdiyantini
Jurnal Akademika Biologi Vol. 4 No. 4 Oktober 2015
Publisher : Departemen Biologi, Fakultas Sains dan Matematika Undip

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (293.19 KB)

Abstract

Aflatoxin  is  a  metabolite  secondary  of  Aspergillus  flavus  and  A.  Parasiticus. Contamination  aflatoxin in poultry have an impact on their liver damage. Technique to reduce the effects of aflatoksin can be done by addition of aflatoxin binder. Aflatoxin binder material commonly used still import as  glucomannan yeast product (GYP), so we needed study local material that has the potential  as a a  aflatoxin binder. The purposes is  test proximate content and the binding power of flour iles-iles compared  to GYP. Sample in research  is  flour  derived  from  bulbs  iles-iles  (Amorphophalus  oncophylus)  and  GYP  as control. The parameters in research that is the physical characteristics , proximate analysis , glukomannan levels and the ability of binding aflatoksin in vitro between flour iles-iles and GYP. The results of the physical test, the sample has delicate texture and gross energy flour iles-iles not significantly different with GYP. The results of proximate analysis ( the water level , ashes , crude fiber , crude protein and crude fat) show between flour iles-iles and GYP was significantly different, except crude fat that shown the result is no different (p<0,05) .The results of the analysis in the glukomannan levels of flour iles-iles is 52,74 % and GYP 17,36%. Testing the ability bind done with a solution of aflatoksin 2 ml (2.7 ng/ml) and materials binder used is 0  g; 0,0013 g; 0,0027 g and 0,0040 g. The research results show binding aflatoxin by flour iles-iles optimal in heavy 0,0013 g (92,92 %), while binding aflatoxin by GYP optimal in heavy 0,0040 g (87,71 %). The ability binding aflatoksin flour iles-iles in proportion to GYP so that can be used as a alternative binder in feed. Keyword: Iles-iles (Amorphophallus oncophylus), aflatoxin, Glucomannan 
Pertumbuhan Mikroalga Botryococcus braunii Sebagai Penghasil Lipid Pada Medium Campuran Antara Air Kelapa Dan Air Laut Bintoro Rudi Saputro; Endang Kusdiyantini; Hermin Pancasakti Kusumaningrum
Jurnal Akademika Biologi Vol. 4 No. 4 Oktober 2015
Publisher : Departemen Biologi, Fakultas Sains dan Matematika Undip

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (162.612 KB)

Abstract

Energy needs in fuel sector tend to increase for supporting human life. Green microalgae (Chlorophyceae) can be used as an alternative solutions  for bioenergy.  Botryococcus braunii is lipid producer microalgae which can be processed further into biodiesel. Microalgae growth medium such as Walne can be subtituted with coconut water that reducing economical cost. This research aims to determine the growth of B. braunii using coconut water and its effect on lipid production. The experiment conducted into five treatments of coconut water consist of  P0 (0%), P1 (10%), P2 (7.5%), P3 (5%), and P4 (2.5%) for five days incubation and three repetitive step. Microalgae growth was calculated according to cell count using haemocytometer. The results showed that 2.5% coconut water subtitution exhibited the best growth rate and lipid production, ie the amount of 547 cells / ml and produced lipid level according to these treatment increased 179% comparing with control. Keywords: Growth, Botryococcus braunii, Lipid, Coconut water, Seawater.
Bioprospeksi Bakteri Yang Berasosiasi Dengan LamunEnhalus acoroidesdan Syringodium isoetifoliumSebagai Penghasil Senyawa Antibakteri Luthfy AN; Endang Kusdiyantini; Anto Budiharjo
Jurnal Akademika Biologi Vol. 4 No. 4 Oktober 2015
Publisher : Departemen Biologi, Fakultas Sains dan Matematika Undip

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (150.989 KB)

Abstract

Bacteria can grow in variety of environments including those associated with marine organisms such as seagrasses, sponge, algae and soft corals. Bacteria association has the ability to produce bioactive compounds that can be used as a defense against pathogens and their hosts by producing secondary metabolites such as antibacteria compounds. This study aimed to asses the potential of bacteria associated with seagrasses Enhalus acoroides and Syringodium isoetifolium. This study was conducted with bacterial isolation from seagrass E. acoroides and S. isoetifolium, characterization of bacterial isolatesin morphology, antibacterial test, and biochemcal activity test. The result obtained four bacterial isolates, two isolates of Syringodium isoetifolium and two isolates of Enhalus acoroides. Two isolates from Syringodium isoetifolium had the largest ability inhibitory zone of inhibtion against the bacteria P. Aeruginosa (5.7mm) and against the bacteria E. coli (6.65mm).Key word : Antibacterial Compound, Seagrass-Associated Bacteria, Vibrio, Enhalus acoroides,      Syringodium isoetifolium

Page 1 of 1 | Total Record : 8

 1 

Filter by Year

2015 2015


Reset
Filter By Issues
All Issue Vol. 10 No. 1 Januari 2021 Vol. 9 No. 2 Juli 2020 Vol. 9 No. 1 Januari 2020 Vol. 8 No. 2 Juli 2019 Vol. 8 No. 1 Januari 2019 Vol. 7 No. 4 Oktober 2018 Vol. 7 No.3 Juli 2018 Vol. 7 No.2 April 2018 Vol. 7 No. 1 Januari 2018 Vol. 6 No. 4 Oktober 2017 Vol. 6 No. 3 Juli 2017 Vol. 6 No. 2 April 2017 Vol. 6 No. 1 Januari 2017 Vol. 5 No. 4 Oktober 2016 Vol. 5 No. 3 Juli 2016 Vol. 5 No. 2 April 2016 Vol. 5 No. 1 Januari 2016 Vol. 4 No. 4 Oktober 2015 Vol. 4 No. 3 Juli 2015 Vol. 4 No. 2 April 2015 Vol. 4 No. 1 Januari 2015 Vol. 3 No. 4 Oktober 2014 Vol. 3 No. 3 Juli 2014 Vol. 3 No. 2 April 2014 Vol. 3 No. 1 Januari 2014 Vol. 2 No. 4 Oktober 2013 Vol. 2 No. 3 Juli 2013 Vol. 2 No. 2 April 2013 Vol. 2 No. 1 Januari 2013 Vol. 1 No. 1 Oktober 2012 More Issue