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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 234 Documents
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ISOLASI DAN KARAKTERISASI BAKTERI ASAM LAKTAT PADA PANGAN FERMENTASI MANDAI Mangasa Tua Pandapotan Siregar; Endang Kusdiyantini; MG Isworo Rukmi
Jurnal Akademika Biologi Vol. 3 No. 2 April 2014
Publisher : Departemen Biologi, Fakultas Sains dan Matematika Undip

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Abstract

East Kalimantan has a lot of processed food products traditionally, one of them is mandai which is fermented food made from fruit leather Cempedak (Arthocarphus champeden). Lactic acid bacteria involved in the fermentation mandai greatly affect the quality of the final product. This study aimed to perform the isolation and characterization of lactic acid bacteria in the mandai fermentation process. MRS medium was used in the isolation of bacteria for 14 days. Isolation of bacteria during the fermentation process mandai obtaining 17 isolates, nine isolates Gram negative isolates, and eight isolates Gram positive. Eight isolates showed positive results against some of the morphological and biochemical characterization. Including biochemical characterization, acid formation and gas production from glucose, motility test, catalase test, growth at 160C and 480C, hydrolysis of starch, fat hydrolysis, and hydrolysis of casein and acid formation test. Eight isolates bacteria made mandai into processed food products that had a sour taste. Keywords: lactic acid bacteria, BAL ,bacterial isolates, cempedak skin.
Keanekaragaman Fitoplankton Pada Tambak Udang Vaname (Litopenaeus Vannamei) di Tireman Kabupaten Rembang Jawa Tengah Indah Riasih Umami; Riche Hariyati; Sri Utami
Jurnal Akademika Biologi Vol. 7 No.3 Juli 2018
Publisher : Departemen Biologi, Fakultas Sains dan Matematika Undip

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Abstract

Budidaya udang Vaname (Litopenaeus vannamei) menjadi andalan komoditas peningkatan perekonomian petani tambak di Indonesia. Fitoplankton merupakan salah satu mikrorganisme yang dapat dijadikan pengukur produktivitas primer perairan karena fitoplankton mampu melakukan fotosintesi dan hasil dari fotosintesis berupa oksigen yang dapat dimanfaatkan oleh biota di dalam perairan. Penelitian ini bertujuan untuk mengetahui keanekaragaman fitoplankton dan kualitas perairan tambak. Metode pengambilan sampel fitoplankton dengan puporsive random sampling. Analisis data menggunakan indeks keanekaragaman Shanon Wiener (H’), indeks keseragaman (e), indeks dominansi (D), dan kelimpahan. Hasil penelitian menunjukan bahwa jenis fitoplankton berjumlah 14 jenis yang tergolong ke dalam kelas Bacillirophyceae 6 Chlorophyceae 2 jenis, Cyanophyceae 4 jenis, dan Dinophyceae 2 jenis. Jenis fitoplankton yang paling banyak ditemui selama penelitian yaitu Skletonema costatum pada stasiun 3 yang tergolong dari kelas Bacillirophyceae. Indeks Keanekaragaman (H’) berkisar antara 1,42 – 2,16. Nilai tersebut menggambarkan keanekaragaman jenis fitoplankton dalam tingkat sedang. Nilai indeks pemerataan (e) berkisar antara 0,59 – 0,98 yang menggambarkan jenis fitoplankton dinyatakan merata. Nilai indeks dominansi (D) berkisar antara 0,12 – 0,36 yang menggambarkan tidak ada jenis yang mendominasi. Kualitas perairan tambak udang Vaname berdasarkan DO, suhu, salinitas, pH, kecerahan, dan kandungan nitrat-fosfat masih baik digunakan untuk budidaya udang.
PERUBAHAN KUALITAS AIR DAN HUBUNGANNYA DENGAN PERTUMBUHAN SEMAI Rhizophora mucronata Lamk. BERDASARKAN WAKTU PENGAMATAN YANG BERBEDA PADA SALURAN TAMBAK WANAMINA Tyagita Andarani; Endah Dwi Hastuti; Rini Budi Hastuti
Jurnal Akademika Biologi Vol. 5 No. 1 Januari 2016
Publisher : Departemen Biologi, Fakultas Sains dan Matematika Undip

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Abstract

System management of mangrove areas, which are associated with fish farming as a solution of damage to mangrove areas which less productive, called wanamina pond system (silvofishery). Rhizophora mucronata is a kind of mangrove which is susceptible to changes in environmental quality, so it can directly affect its growth. This study aims to know the growth rate of R.mucronata, water quality, and the relationship of the two, based on different observation time on channel of wanamina pond. The methods used in this study called Completely Randomized Design, while the data analysis that is used in the form of analysis of variance (ANOVA) and multiple linear regression analysis. The result of the analysis of variance for growth of R. mucronata’s seed in four months showed that a growing number of leaves, branches, the stands, and the rod diameter from different observation time shows no different results. Water quality parameter that shows different results are temperature and salinity. Analysis of the relationship of water quality with growth of R. mucronata from multiple linear regression indicates that turbidity and pH give influence negatively to growth of diameter for R. mucronata.Keywords: Rhizophora mucronata, Seed Growth, Water quality.
KEANEKERAGAMAN NGENGAT DI WANA WISATA GONOHARJO, LIMBANGAN, KENDAL, JAWA TENGAH Nanang Kamaludin; Mochamad Hadi; Rully Rahadian
Jurnal Akademika Biologi Vol. 2 No. 2 April 2013
Publisher : Departemen Biologi, Fakultas Sains dan Matematika Undip

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Abstract

Moths is insect in Order Lepidoptera of Nocturnal habit. Moths help to polinate the flower were blossom in the night. The relationship of moths and plants can be used as bio-indicators of environmental changes in the Gonoharjo forest habitats. The objective of this study are to compare the abundance and diversity of members of moth (Lepidoptera) in various habitats and to determine the status of rare and endemic species that are found in Wana Wisata Gonoharjo. This study used light traps method for moth in four different habitats, i.e., secondary forests, riparian area and forests of pine forest and coffee plantation. The research was conducted over two months during October-November 2012. The analysis used were relative abundance, diversity index, Huctheson test, evennes index and similarity index. Threety nine moth species from 10 families were found in 4 habitats of Wana Wisata Gonoharjo. The highest number of moth species found in secondary forest (30 species) and the lowest one found in the pine forests (6 species). Statistically, there were differences within the types of habitat diversity. Evennes indices in all habitats of Wana Wisata Gonoharjo were relatively high. In general, type of habitat affects species diversity of moths. Keyword : Diversity, moth and Gonoharjo forest.
KAPASITAS LAPANG DAN PERTUMBUHAN CABAI MERAH KERITING (Capsicum annum L.) PADA JENIS DAN PEMBENAH TANAH YANG BERBEDA Novi Sultonia Farida; Sri Widodo Agung Suedy; Endah Dwi Hastuti
Jurnal Akademika Biologi Vol. 4 No. 1 Januari 2015
Publisher : Departemen Biologi, Fakultas Sains dan Matematika Undip

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Abstract

Clay and sandy soil are critical area that have been damaged due to the very low rainfall or poor soil texture and in result recuding the function of water and soil. Such soils can be restored by using repairing soil materials tahat can improve soil structure by affeeting the soil field capacity and pull through the water. In result, it can support the growth of plant. The addition of repairing soil can increase field capacity and the growth of curly red chili. This study aims to determine the effect of repairing soil, soil types (clay and sandy) and the interaction between soil types and repairing soil soil that affecting field capacity and the growth of curly red chili. The research was conducted in Ringinarum village, Kendal, and plant BSF Laboratory, FSM Undip. The research design was a Completely Randomized Design (CRD) with a 2x3 factorial pattern, each treatmentnhad 3 repetitions. The firs factor was soil (T): Sandy (P) and Clay (L), while the second factor: S0 (control/without repairing soil), S1 (rice husk repairing soil) and S2 (rice straw repairing soil). Analysis of the data was using Analysis of Variance (ANOVA) followed by Duncan’s Test significant difference of Multiple Range Test (DMRT) at the 95% significance level. The observed parameters were field capacity, plant height, number of leaves, fresh weight and dry weight of chilies. The results showed that the addition of repairing soil affected the field capacity and the growth of curly red chili. Field capacity of control (without repairing soil) of 17,3%, rice husk repairing soil of 66,76%, and rice straw repairing soil of 80,51% (increased). The addition of repairing soil of rice straw was more optimal that rice husk and soil without repairing soil. The plant was better growth on clay than on sandy soil. Keywords : sandy soil and clay soil, repairing soil, field capacity, rice husk, rice straw
UJI AKTIVITAS KITIN DEASETILASE ISOLAT BAKTERI DARI KAWASAN GEOTERMAL DIENG Ghaida Afra Akhsani; Agung Suprihadi; Sri pujiyanto
Jurnal Akademika Biologi Vol. 6 No. 3 Juli 2017
Publisher : Departemen Biologi, Fakultas Sains dan Matematika Undip

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Abstract

Chitinolytic bacteria is a bacterium, which is able to degrade chitin. This ability is obtained from the resulted chitinolytic enzyme. Chitin deacetylase (EC 3.5.1.41) is one of the chitinolytic enzymes, which be able to convert chitin into its derivatives. For this reason, chitin deacetylase has a chance to be an environmentally enzymatic converter of chitin. In addition, chitin derivatives have a wider potential in many fields. The objectives of this study were to obtain bacterial isolates from the mud of Sikidang Crater in Dieng geothermal field that producing chitin deacetylase enzyme, and to determine its activity characteristic of (optimum time production, optimum pH, and effect of 1 mM divalent metal ions) from the resulted chitin deacetylase enzyme. This research used completely randomized design. The data were analyzed using One Way ANOVA and Tukey HSD test. The results showed that KSR HA 24 isolates were able to produce chitin deasetylase with optimum enzyme activity of 0.668 U / ml at 18 hours production time. Optimum activity of chitin deacetylase occurred at pH 5 of 0.75 U / ml. Chitin deacetylase activity with 1 mM addition of divalent metal ions produce activator metal ions, including Mg2+, which increased the activity up to 154.43%, Fe2+ the activity up to 144.63%, and Cu2+ the activity up to 110.41%. Inhibitor metal ions, including Zn2+, which decreased the activity to 93.77%, and Mn2+ the activity to 86.46%.Keywords: Chitinolytic, Chitin Deacetylase, Enzyme Activity, pH, Divalent Metal Ions
ETNOZOOLOGI SUKU ANAK DALAM (SAD) KAMPUNG KEBUN DUREN DESA LANTAK SERIBU KECAMATAN RENAH PAMENANG KABUPATEN MERANGIN PROVINSI JAMBI Mutia Yuli Farida; J Jumari; Fuad Muhammad
Jurnal Akademika Biologi Vol. 3 No. 1 Januari 2014
Publisher : Departemen Biologi, Fakultas Sains dan Matematika Undip

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Abstract

The people of Suku Anak Dalam (SAD) have a very strong interaction with animals due to their hunting tradition. The objective of this study is to describe their knowledge on the varieties of animals which are employed by the society in their daily lives. The research was conducted in Desa Lantak Seribu, Kecamatan Renah Pamenang, Kabupaten Merangin, Provinsi Jambi. The data was collected through explorative method, which included inventorying varieties of animals known by the people and how they utilized the animals. Etnozoology as data collecting method was developed by participative etnobotany; consisted of open ended interview, participative observation, and getting involved in the society’s activities. From the data collected by inventorying and interviewing, the data were tabulated and categorized based on the animals’ utilization. Based on the findings, there are 80 kinds of animals used by the people of Suku Anak Dalam (SAD) and they were categorized into 7 classes; they are Mollusca (4), Arthropod (12), Amphibian (3), Reptiles (8), Pisces (2), Aves (35), and Mammals (15). Based on its utilization, there are: for food (45), for pet (17), for traditional ritual (2), mythical animals (5), as the source of calcium (4), wild animals (5), for medical purposes (3), and pests (6). The people have their own local wisdom on how they employ and manage the varieties of animals they know. Keywords      : Desa Lantak Seribu, Etnozoology, Suku Anak Dalam (SAD)
KEMAMPUAN AKUMULASI TIMBAL (Pb) PADA AKAR MANGROVE JENIS Avicennia marina (Forsk.) DAN Rhizophora mucronata (Lamk.) DI LAHAN TAMBAK MANGUNHARJO SEMARANG Titi Wulandari; Rini Budihastuti; Endah Dwi Hastuti
Jurnal Akademika Biologi Vol. 7 No.2 April 2018
Publisher : Departemen Biologi, Fakultas Sains dan Matematika Undip

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Abstract

Perairan di Mangunharjo merupakan kawasan yang dekat dengan aktivitas industri dan pemukiman penduduk. Tingginya aktivitas di kawasan Mangunharjo, dapat mengalirkan berbagai limbah yang dapat menimbulkan pencemaran, salah satunya pencemaran Logam Berat Pb. Penelitian ini bertujuan untuk menganalisa kemampuan akar dan daun Rhizophora mucronata dan Avicennia marina dalam mengakumulasi polutan logam berat Timbal (Pb). Penelitian dilakukan di lahan tambak Kelurahan Mangunharjo Semarang. Rancangan penelitian ini menggunakan Rancangan Acak Lengkap 2x1: Faktor I yaitu Jenis (Avicennia marina dan Rhizophora mucronata) pada stadium pohon, Faktor II yaitu organ akar dengan dua kali pengambilan sampel dalam jangka waktu 30 hari. Parameter penelitian antara lain kadar logam Pb pada akar mangrove, serta kadar logam Pb pada air dan sedimen. Hasil penelitian dapat diketahui kadar logam Pb dalam air dan sedimen lingkungan tumbuh Avicennia marina berturut-turut adalah 0,36-0,9475 mg/l dan 0,941-1,455 mg/kg. Kadar logam Pb dalam air dan sedimen pada akar Rhizophora mucronata berturut-turut adalah 0,175-0,243 mg/l. Jenis dan Organ tidak berinteraksi karena signifikansinya 0,732 (>0,05). Kemampuan mangrove untuk menyerap logam berat di lingkungan perairan dapat diketahui dengan menghitung Bio Concentration Factors (BCF). Nilai BCF untuk mangrove Avicennia marina dan Rhizophora mucronata berkisar antara 0,0566-0,1068, dengan nilai tertinggi pada akar Rhizophora mucronata (0,2879-0,0638). 
PENGARUH TEPUNG KUNYIT (Curcuma longa L.) TERHADAP KADAR KOLESTEROL DAN KADAR TRIGLISERIDA DARAH BURUNG PUYUH (Coturnix coturnix japonica L.) Sheila Widowati; Koen Praseno; Tyas Rini Saraswati
Jurnal Akademika Biologi Vol. 1 No. 1 Oktober 2012
Publisher : Departemen Biologi, Fakultas Sains dan Matematika Undip

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Abstract

This study aims to determine the potential of turmeric powder to the vitality of the quail with blood cholesterol and triglyceride levels. Results of studies using different concentrations of turmeric powder. One set of experiments consisted of 4 treatments each consisting of three tail quail and performed five repetitions. Given concentration is 0 mg / head / day; 13'5 mg / head / day; 27 mg / head / day; 54 mg / head / day for increased vitality through the levels of cholesterol and triglycerides. Data were analyzed using ANOVA (analysis of varian). Analysis showed significantly different levels of cholesterol and triglycerides in the blood. Provision of turmeric powder (Curcuma longa L.) in this study has the potential to lower cholesterol and blood triglycerides quail.Keyword : cholesterol and triglycerides, quail (Coturnix coturnix japonica L.), turmeric powder
Keanekaragaman Tumbuhan pada Berbagai Tata Guna Lahan di Kawasan Kars Pegunungan Kendeng Desa Sukolilo, Pati (Plant Diversity in Different Lands Use in Karst Region Mountains Kendeng Sukolilo village, Pati) Angga Yuda Saputra; Erry Wiryani; Jumari J
Jurnal Akademika Biologi Vol. 2 No. 1 Januari 2013
Publisher : Departemen Biologi, Fakultas Sains dan Matematika Undip

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Abstract

Karst region has typical characteristics of ecosystems of high lime content that required plants which lived in the region tolerant with the content of lime and drought. There are any land use at Sukolilo village,  the differences in land use affect the diversity of plants. This study aims to determined the index of diversity and importance value index of plant , as well as the importance of vegetation indiced on various land uses in the region. The plot study determination was conducted by purposive random sampling method by recording the number of species, widespread basal area and canopy closure at the level of plant trees, shrubs and herbs, and analyzed the data that obtained from different land uses. The results as a whole there are 156 plant species in 55 families, in details, at tree level there are 60 species, 69 species of shrubs level and 34 species of herbaceous level. The highest species diversity index was found on the land around the springs (3.18). While the importance value index found on Jati tree (Tectona grandis) on forest land of Perhutani (186.50). The differences in diversity on a variety of land use are because of human influenced in the utilization and management of land. Keywords: Plant Biodiversity, Land Use, Karst Regions, Kendeng Mountains Sukolilo

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