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INDONESIA
Bioma : Berkala Ilmiah Biologi
Published by Universitas Diponegoro
ISSN : -     EISSN : 25982370     DOI : -
Core Subject : Education, Agriculture,
Agriculture, Biological Sciences & Forestry Education
BIOMA (ISSN 1410-8801) adalah Majalah Ilmiah Biologi yang bertujuan mewadahi semua informasi hasil penelitian, telaah pustaka, makalah teknis, dan kajian buku, dari berbagai cabang ilmu Biologi. Diharapkan penerbitan ini dapat berkontribusi dalam penyampaian informasi ilmiah yang merupakan mata rantai proses kegiatan ilmiah. Terbit sejak tahun 1999.
Arjuna Subject : -
Articles 318 Documents
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Pertumbuhan dan Biomassa Spirulina sp dalam Skala Laboratoris Hariyati, Riche -
Bioma : Berkala Ilmiah Biologi Vol. 10, No. 1, Tahun 2008
Publisher : Departemen Biologi, Fakultas Sains dan Matematika, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (65.931 KB) | DOI: 10.14710/bioma.10.1.19-22

Abstract

Spirulina is unicelular algae used as a natural food of brawn shrimp and fish larval that has high nutritionalvalve. The aims of this research is to asses growth and biomass of spirulina sp at laboratorium scale. Method wascarried out by culturing Spirulina sp using walne culture media.The density of Spirulina sp was conuted for 9 days . The result of this research shows that optimal densitycuhich was 11.698.103 unit/ml occurred on the day 7th with wet weight was o,042 gr/l and dry weight was 0,0375gr/l. Spirulina biomass an increased as a responsive of their growth at a certain level
Bobot, Indeks Kuning Telur (IKT), Dan Haugh Unit (Hu) Telur Ayam Ras Setelah Perlakuan Dengan Pembungkusan Pasta Rimpang Temulawak (Curcuma xanthorrhiza Roxb). Putri, Dyah Ayu Maharani; Djaelani, Muhammad Anwar; Mardiati, Siti Muflichatun
Bioma : Berkala Ilmiah Biologi Vol. 18, No.1, Tahun 2016
Publisher : Departemen Biologi, Fakultas Sains dan Matematika, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (62.2 KB) | DOI: 10.14710/bioma.18.2.7-13

Abstract

Eggs are farm products that provide the greatest contribution to the achievement of community nutritional adequacy. The aims of the research was to an analyzed the quality of eggs in treatment without and with a temulawak rhizome pasta stored at 6,12, and 24 days. This research used  35 eggs consists of 7 treatment and 5 replication, namely PtT0 : as control, a group of eggs without packing temulawak rhizome pasta and without storage, PtT6 : a group of eggs without packing temulawak rhizome pasta after 6 days storage, PdT6 : a group of eggs with packing temulawak rhizome pasta after 6 days storage, PtT12 : a group of eggs without packing temulawak rhizome pasta after 12 days storage, PdT12 : a group of eggs with packing temulawak rhizome pasta after 12 days storage, PtT24 : a group of eggs without packing temulawak rhizome pasta after 24 days storage, and PdT24 : a group of eggs with packing temulawak rhizome pasta after 24 days storage. This research was analyzed used a completely randomized design (CRD). Variables measured were egg weight, yolk indeks, and Haugh Unit (HU). Data obtained from this study were analyzed using analysis of variance (ANOVA) if there is a real difference then continued further test using Duncan test at the level 95 %. The result  egg weight reducted and yolk index shows was significantly different in PtT6, PtT12, PtT24, and PdT24 and Haugh Unit (HU) shows was significantly different in PtT6, PtT12, PtT24. Conclusion of this research is gived temulawak rhizome pasta are able to maintain the quality of eggs were observed on days 6, 12, and 24. Key Word : Chicken egg,  Temulawak rhizome, Egg quality
Keanekaragaman Marchantiophyta Epifit Zona Montana di Kawasan Gunung Ungaran, Jawa Tengah Aristria, Desy; Perwati, Lilih Khotim; Wiryani, Erry
Bioma : Berkala Ilmiah Biologi Vol. 16, No.1, Tahun 2014
Publisher : Departemen Biologi, Fakultas Sains dan Matematika, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (94.807 KB) | DOI: 10.14710/bioma.16.1.26-32

Abstract

Bryophytes consisting of three division, there are Bryophyta (mosses), Marchantiophyta (liverworts) dan Anthocerotophyta (hornworts). Marchantiophyta are divided in two types, leafy liverworts and thallose liverworts. Mount Ungaran which has many diversity of Bryophytes but research about Bryophytes in this area are sparse. The aim of this research was to observe diversity of Marchantiophyta on tree trunks in montane zone (altitudes 1300 to 2050 meters above sea level). Sampling was conducted in April and May 2012 at three different altitudes ( 1355, 1660, and 2040 meters above sea level). Identification of Bryophytes was carried out at Laboratorium of Ecology and Biosistematics, Department Biology, Faculty of Science and Mathematics, Diponegoro University, Semarang, Indonesia. The results shown there are 9 families with 26 species belonging to the division Marchantiophyta.   Keywords: Epiphytic Marchantiophyta, Mount Ungaran, diversity, montana zone.
Struktur Komunitas Hutan Mangrove Di Sungai Donan Kabupaten Cilacap, Jawa Tengah Ashari, Desy Puspita; Muhammad, Fuad; Utami, Sri
Bioma : Berkala Ilmiah Biologi Vol. 21, No 1, Tahun 2019
Publisher : Departemen Biologi, Fakultas Sains dan Matematika, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (136.345 KB) | DOI: 10.14710/bioma.21.1.65-71

Abstract

Mangrove forests are plant communities in coastal areas that have high productivity. The development of the Cilacap coastal area poses a threat to the degradation of the Cilacap coastal environment. The Cilacap Coast has mangrove ecosystems that grow along the Donan River but its sustainability is threatened due to mangrove forest degradation. Mangrove forest monitoring is very important to determine the current situation due to the degradation and conversion of mangrove forests. This study aims to determine the community structure of Sungai Donan mangrove forest. Determination of research location with purposive sampling method. Mangrove vegetation sampling technique uses square plot method. Mangrove vegetation analysis uses important value index of mangrove species, diversity index, dominance index and evenness index. The results of the study there were 10 species of mangroves including Aegiceras corniculatum, Avicennia alba, Bruguierra cylindrica, B. gymnorrhiza, Nypa fruticans, Rhizophora apiculata, R. mucronata, Sonneratia alba, Hibiscus tiliaceus and Terminnalia catappa. The results showed that at each station the highest importance index was Avicennia alba in the upstream of Donan river, Alas Malang and Perhutani Banyumas Barat. The highest important value index in the Cilacap Industrial Area and the Kutawaru mangrove species are Sonneratia alba and Hibiscus tiliaceus. Sungai Donan mangrove forest community has a moderate index diversity value ranging from 1.23 to 1.78, high evenness ranges from 0.89 to 0.97, and low dominance index values range from 0.18 to 0.34.
Struktur Komunitas Gulma Padi (Oryza sativa L.) Sawah Organik dan Sawah Anorganik di Desa Ketapang, Kec. Susukan, Kab. Semarang Utami, Sri; Purdyaningrum, Lila Ris
Bioma : Berkala Ilmiah Biologi Vol. 14, No. 2, Tahun 2012
Publisher : Departemen Biologi, Fakultas Sains dan Matematika, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (83.04 KB) | DOI: 10.14710/bioma.14.2.91-95

Abstract

Penurunan produktifitas padi disebabkan antara lain oleh kompetisi antara gulma dan tanaman padi. Padi merupakan jenis tanaman pangan yang sangat penting karena merupakan sumber makanan pokok. Adanya sistem pertanian yang berbeda memungkinkan jenis gulma dan dominansinya berbeda pula. Penelitian ini bertujuan untuk mengetahui struktur komunitas gulma padi pada sistem pertanian organik dan pertanian anorganik. Tehnik sampling dengan metode acak. Plot yang digunakan berukuran 1 m x 1 m dan masing-masing stasiun diambil 5 plot. Sampling gulma dilakukan dengan mencatat jenis-jenis gulma dan menghitung jumlah individu masing-masing spesies.. Dilakukan juga pengukuran faktor lingkungan. Dari hasil penelitian diperoleh 10 jenis gulma padi sawah organik dan 12 jenis gulma padi sawah anorganik. Total individu gulma padi organik lebih banyak dibanding gulma padi anorganik. Jenis gulma padi sawah organik yang mempunyai dominansi tinggi  yaitu Azolla pinnata, Pistia stratiotes dan Salvinia molesta sedangkan pada sawah anorganik Dactyloctenium aegyptium, Eleocharis acicularis dan Monochoria vaginalis. Tingkat kesamaan antara komunitas gulma padi sawah organik dan anorganik kecil. Kata kunci : kompetisi, produktifitas, gulma, sistem.pertanian  
Pertumbuhan Legume pada Ketinggian yang Berbeda Growth of Legums in Different Altitude Sarmita, Fitriani -; Hastuti, Endah Dwi; Haryanti, Sri -
Bioma : Berkala Ilmiah Biologi Vol. 13, No. 2, Tahun 2011
Publisher : Departemen Biologi, Fakultas Sains dan Matematika, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (57.084 KB) | DOI: 10.14710/bioma.13.2.67-72

Abstract

Alfalfa (Medicago sativa L.) was one of the example plant that the chlorophyll has been used for medicine,but there were obstacles in cultivation alfalfa (M. sativa L.), becouse the seed must have been imported. Besides that,in Indonesia Alfalfa’s seed was sterile. Legume used in this research will use as chlorophyll alternative source besidealfalfa (M. sativa L.). Legume that have been examined were planted in three location with different altitude that wasSemarang (200 m above sea level), Ungaran (316 m above sea level) and Bandungan (843 m above sea level).Alfalfa (M. sativa L.) is subtropical plant meanwhile legume used to be cultivated in Indonesia is tropical plant.That’s why in this research examined legume were planted in different altitude. Purposes of this research were toknow the growth of legume, knowing if there were interaction among five legumes and planting location withdifferent altitude.. Legumes that were used winged bean (Psophocarpus tetragonolobus (L.) DC.), cowpea (Vignaunguiculata (L.), alfalfa (M. sativa L.), long bean (Vigna sesquipedalis) and common bean (Phaseolus vulgaris L.).The experimental design is completely randomize design with four replication. The data were analyzed by ANOVAtest and continued with Duncan multiple range test with 95% confidence intervals.The results showed that (P.tetragonolobus (L.) DC.) which was planted in Ungaran has the optimum growth of legume.
Isolasi dan Identifikasi Jamur Indigenous Rhizosfer Tanaman Kentang dari Lahan Pertanian Kentang Organik di Desa Pakis, Magelang Purwantisari, Susiana -; Hastuti, Rini Budi
Bioma : Berkala Ilmiah Biologi Vol. 11, No. 2, Tahun 2009
Publisher : Departemen Biologi, Fakultas Sains dan Matematika, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (3261.717 KB) | DOI: 10.14710/bioma.11.2.45-53

Abstract

Jamur rhizosfer merupakan salah satu faktor biotik yang dapat menginduksi ketahanan tanaman terhadappenyakit. Jenis tanah yang mengandung mineral organik dan anorganik mempengaruhi jenis jamur yang ada. Jamuryang ada di rhizosfer dapat melindungi tanaman terhadap patogen dan meningkatkan kesuburan pertumbuhantanaman sehinggga digolongkan sebagai jamur pemacu kesuburan tanaman (biofertilizer). Dengan demikian isolatjamur yang diisolasi dari rhizosfer tanaman sehat berpeluang besar menjadi alternatif penting bahan bakubiofertilizer tanaman. Penelitian ini bertujuan untuk mengetahui genus-genus jamur tanah indigenous di lahanpertanian kentang organik di Desa Pakis Magelang. Isolasi jamur menggunakan metode pengenceran berseri (SerialDilution Method ) hingga 10-5 pada medium PDA (Potato Dextrose Agar). Isolat jamur yang didapatkandiidentifikasi secara makroskopis dan mikroskopis menggunakan buku identifikasi Domsch, et al., (1980). Dari hasilisolasi diperoleh 8 (delapan ) isolat jamur yang termasuk ke dalam genus Trichoderma (2 isolat), Penicillium (1isolat), Phytophthora (2 isolat), Mucor (1 isolat) dan 2 isolat jamur yang belum teridentifikasi sehingga belumdiketahui genusnya.
Produksi Enzim Selulase Dari Bakteri Serratia marcescens KE-B6 Dengan Penambahan Sumber Karbon, Nitrogen dan Kalsium Pada Medium Produksi Septiani, Arom; Wijanarka, W; Rukmi, MG Isworo
Bioma : Berkala Ilmiah Biologi Vol. 19, No. 2, Tahun 2017
Publisher : Departemen Biologi, Fakultas Sains dan Matematika, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (555.004 KB) | DOI: 10.14710/bioma.19.2.159-163

Abstract

The waste of cellulose in the agro-industry can be reduced by decomposing the cellulose polymer into glucose. This process was carried out by cellulase enzyme (EC 3.2.1.4) produced by cellulolytic bacteria. Bacteria required food as nutrition to survived their life, can be obtained through growth medium or enzyme production medium. Carbon, nitrogen and calcium belong to the essential nutrients contained in growth medium and enzyme production medium. The purpose of this study is to determine the effect of the addition of carbon, nitrogen and calcium source and the time of incubation on the production of cellulase enzyme from Seratia marcescens KE-B6 bacteria. This research used Completely Randomized Design (RAL) of Factorial Pattern with two factors. The first factor is the type of medium, the first medium is the standard medium (M1) and the second medium is enriched with carbon, nitrogen and calcium sources (M2), the second factor is the incubation time with 5 repetitions. The enzyme production is measured by the reducing sugar method. The data obtained were analyzed using Anova. The results showed that the addition of carbon, nitrogen, and calcium sources and incubation time did not affect the production of cellulase enzyme by Serratia marcescens KE-B6. Keywords: Cellulose, Cellulase enzyme, Serratia marcescens
Kualitas Simplisia Tanaman Biofarmaka Curcuma domestica Setelah Proses Pemanasan Pada Suhu Dan Waktu Bervariasi Kusumaningrum, Hermin Pancasakti; Kusdiyantini, Endang; Pujiyanto, Sri
Bioma : Berkala Ilmiah Biologi Vol. 17, No.1, Tahun 2015
Publisher : Departemen Biologi, Fakultas Sains dan Matematika, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2518.981 KB) | DOI: 10.14710/bioma.17.1.27-33

Abstract

Curcuma domestica is one of traditional medicinal plants that is found in Gunungpati Semarang. However the dried product do not achieve optimal standard quality for simplicia  in terms of microbial contaminant and in an industrial scale household. Knowledge on how to use  sterilization   to produce better simplicia and reducing contaminant has not been known by farmers, yet. The purpose of this activity was to obtain the best heating treatment on sterilization of Curcuma simplicia using several temperature under sunlight and oven device. It was also want to  show microbial growth after heating at several times and their  influence on the quality of simplicia after treatment. The method was conducted by  simplicia sterilization of C. domestica using sunlight sterilization for a week and using oven at a temperature of 300C, 400C, 500C and 600C for 1, 3, 6, 9, 12, 24, and 48 hours. The results showed that heating at temperature of 500C for 48 hours obtained the best simplicia, followed by heating at a temperature of 600C for 16-48 hours without contaminants after storing period for 3 months.   Key words :Curcuma, sterilization, heat, microbia
Uji Aktivitas Inhibisi α-Glukosidase Isolat Bakteri Endofit Tanaman Duwet (Syzygium cumini L. Skeels) Sebagai Sumber Alternatif Antidiabetes Fatin, Nuhaul; Pujiyanto, Sri; Raharjo, Budi
Bioma : Berkala Ilmiah Biologi Vol. 20, No 2, Tahun 2018
Publisher : Departemen Biologi, Fakultas Sains dan Matematika, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (128.289 KB) | DOI: 10.14710/bioma.20.2.165-169

Abstract

Diabetes mellitus (DM) is a metabolic disease contributes to the health problem in Indonesia. The inhibition of α-glucosidase is one of the mechanisms of antidiabetic treatment. α-glucosidase inhibitor can be found in the duwet plants (Syzygium cumini L. Skeels)  that have been used traditionally in Indonesia as antidiabetic drug. However, due to the insufficient quantity and the long harvesting time, the forthcoming appliclation of duwet is consideraly not promising. The natural tendencies of endophytic microorganisms are identicl to the host plant. In this case the endophytic bacteria of the duwet plant is studied to determine its potential as an alternative to producing α-glucosidase inhibitors. A total of 14 isolates of endophytic duwet bacteria isolated tested the ability of α-glucosidase inhibitors using p-nitrophenyl-D-α-glucopyranoside. The result of  the absorbance based on breakdown of substrate that produce colored product and analyzed by spectrophotometric technique. All isolates had α-glucosidase inhibitor activity, the highest activity produced by isolates A21 and A22 with value of 69,18% and 69,22%. Keywords : inhibitor α-glucosidase, endophytic bacteria, Syzygium cumini

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