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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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PENGARUH SUHU PENGERINGAN YANG BERBEDA TERHADAP KUALITAS CABAI RAWIT (Capsicum frutescens L.) Evi Ari Parfiyanti; Rini Budi Hastuti; Endah Dwi Hastuti
Jurnal Akademika Biologi Vol. 5 No. 1 Januari 2016
Publisher : Departemen Biologi, Fakultas Sains dan Matematika Undip

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Abstract

Chili pepper has a high economic value but it belongs to the type of fruit that can easily damage because of the climacteric phase, therefore, it is needed a proper postharvest handling, either by drying with different temperatures for 14 hours. The research objective is to find out the effect of drying temperature for the quality of chili pepper and find out the best drying temperature that influences the quality of chili pepper. The research design that used is completely randomized design (CRD) with three replications. The drying temperatures that use are T1 (50°C), T2 (60°C) and T3 (70°C). The research parameter consists of weight loss, water content, vitamin C and discoloration. Methods of analyzing the data that used is analysis of variance (ANOVA) continued by significant different test of Duncan Multiple Range Test (DMRT) at the 95% signification level. The chili pepper that drainaged in temperature of 50°C can shows the best result for defend of chili pepper color and texture. The highest contens of vitamin C can be found in temperature of 50°C that show the number of 63.287 mg%. The drying temperature of 70°C give the highest weight loss that show the number of 3.833%  and give the lowest water content for about 72.4%. The research of study show that the drying temperature influence the alteration of chili pepper quality which show the result that it can decrease the fruit weight loss, the water content of chili pepper, vitamin C contens and also the color and the texture of chili pepper.Keywords: Chili pepper, drying temperature, weight loss, water content, vitamin C
KEANEKARAGAMAN JENIS LICHENES EPIFIT PADA HUTAN KOPI DAN HUTAN CAMPURAN DI NGLIMUT GONOHARJO KENDAL Senjha Mutiara Asih; Jumari J; Murningsih M
Jurnal Akademika Biologi Vol. 2 No. 2 April 2013
Publisher : Departemen Biologi, Fakultas Sains dan Matematika Undip

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Abstract

Wana Wisata Nglimut has the hilly of topograpy land and the high biodiversity. One of which them are many groups of Lichenes. This research aims was to determine the diversity of lichenes species and the diversity of thallus lichenes form in coffee plantation and mixture forest of Wana Wisata Nglimut Gonoharjo. The research was done in coffee forest and mixture forest of Wana Wisata Nglimut Gonoharjo, Kendal, Central Java. Lichenes sampling was done in coffee plantation and mixed forests of Wana Nglimut Gonoharjo, Kendal, Central Java. Sampling was done on by square plot, plot determination of the square plot using purposive method. Results of research on diversity lichenes in Wana Wisata Nglimut Gonoharjo Kendal undertaken in mixed forests and coffee plantation, obtained 42 species of lichenes. Nine species lichenes were found in the coffee plantation, and 41 Lichenes are found in mixed forest, and 8 species found in the coffee plantation and mixed forests. The results showed that the crustose type was the type of thallus lichenes that most commonly found in coffee forest whilest foliose type was lichenes that most commontly found in mixture forest.Keywords: Lichenes Epiphytes, Diversity, Wana Wisata Nglimut
Aktivitas Antioksidan Dan Nilai Gizi Dari Beberapa Jenis Beras Dan Millet Sebagai Bahan Pangan Fungsional Indonesia Adriamin Azis; Munifatul Izzati; Sri Haryanti
Jurnal Akademika Biologi Vol. 4 No. 1 Januari 2015
Publisher : Departemen Biologi, Fakultas Sains dan Matematika Undip

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Abstract

In recent time, there is a change in diet behavior of people. Food color is potential as antioxidant activity, such as rice and millet. These two type of grain are potentialy been used as functional food. This study is aimed to analyze antioxidant activity and nutrition content in several rice and millet. The antioxidant activity of Garcinia skin was used as control. The antioxidant activity was measured by DPPH method. This research was designed by descriptive quantitative. Parameters was measured including antioxidant activity, water content, ash, fiber, fat, and protein content. Resuls  from this study showed that red rice (Oryzanivara L.) has the highest antioxidant activity, as much as 95,05%. This antioxidant activity is 0.92% higher than Garcinia skin. The fiber content in red rice was also the highest, wich is 7,50%, wihie the protein content was 13,78%. The black rise, has content 13.58% of protein. Antooxidant activity of pearl millet (Pennisestumnglaucum) was 4.92%, and protein content as much as 13,57%. Panicummiliaceum has higher antioxidant activity (8,09%) and 11,21% of protein content. The fiber content of Pennisestumglaucumwas 9,33%, while Panicummiliaceumwas 5,75%.Keyword: Antioxidant, food, rice, millet
PRODUKSI INULINASE OLEH KHAMIR Pichia manshurica DUCC Y-015 PADA TEPUNG UMBI DAHLIA (Dahlia variabilis Willd.) DENGAN VARIASI KONSENTRASI MnSO4.H2O DAN WAKTU INKUBASI Berlian Abadianti; Agung Suprihadi; w wijanarka
Jurnal Akademika Biologi Vol. 6 No. 3 Juli 2017
Publisher : Departemen Biologi, Fakultas Sains dan Matematika Undip

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Abstract

Inulinase (E.C. 3.2.1.7) is an enzyme which able to hydrolyze an inulin into fructose and fructooligosaccharides.  The main application of inulinase enzyme in the food industries is as the ingredient in producing High Fructose Syrup (HFS). Moreover, the other important applications of inulinase enzyme are to produce ethanol, inulooligosacarida (IOS), fruktooligosacarida (FOS), pullulan, sorbitol, etc.  Pichia manshurica DUCC Y-015 is kind of yeast that is capable in producing inulinase in medium containing inulin. Optimization of inulinase enzyme production needs to be done to increase inulinase production, the way that could be conducted is by the addition of metal ion and optimization of incubation time. The purpose of this research is to investigate the effect of adding mangan ion (MnSO4.­H2O) and incubation time. In conducting this study, the researcher applies experimentally research by using Randomized Complete Block Design (RCBD) factorial pattern. The first factor is concentration of MnSO4.H2O, with concentration level 0 mM (M0), 0,1 mM (M1), 0,5 mM (M2). The second factor is the variation of incubation time, i.e. 6 hours (I6), 12 hours (I12), and 18 hours (I18) with three times repetition. The collected data were analyzed using ANOVA 5% signification (α= 0,05) and completed by the Duncan test. The result of analysis shows that variation of MnSO4.H2O concentration and incubation time does not significantly influential on inulinase activity of Pichia manshurica DUCC Y-015.Keywords: Inulinase, Inulin, Pichia manshurica DUCC Y-015, MnSO4.H2O, Incubation time.
PERUBAHAN MORFOLOGI UMBI KENTANG KONSUMSI (Solanum tuberosum L. Var Granola) SETELAH PERLAKUAN CARA DAN WAKTU PENYIMPANAN YANG BERBEDA Edi Purnomo; Sri Widodo Agung Suedy; Sri Hariyati
Jurnal Akademika Biologi Vol. 3 No. 1 Januari 2014
Publisher : Departemen Biologi, Fakultas Sains dan Matematika Undip

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Abstract

Agriculture product storage is an important that must be done in post harvest handling. Potato is one of the easily broken product, so that a good handling is needed to mantain quality as one of functional food. The present study aims to know the effects of methode and time storage of morphology tuber potato consumption. This  research  uses Completely Randomize Design on  factorial pattern with  two  factors.  First, method storage (K1); saved in open container, (K2); saved in close container. Second, time storage (T1); 2 weeks, (T2); 4 weeks, (T3);  6 weeks, (T4); 8 weeks, (T5); 10 weeks. This research uses 10 treatments and 3 replications. The parameter includes morphology quantitatively: diameter decreasing, total black spot, percentage of breakage and morphology qualytatively: surface alteration and bud. Data were analyzed using  ANOVA, followed by Duncan’s test at the significance level of 95%. The results showed that storage method in open container (K1) tends increase diameter shrinkage. Storage time caused alteration of morphology in quantitative and qualytative. Interaction between method and time of storage influence in total black spot (p<0,05). Storage of potato tuber consumption had better kept at a distance from light presence less 4 weeks. Keywords: storagemethod, storagetime, Solanum tuberosum L., morphology
KERAGAMAN SERANGGA OPT DAN MUSUH ALAMI DI LAHAN KACANG HIJAU SEBELUM DAN PASCA PANEN Dwiyani Anjar Martitik; Mochamad Hadi; Udi Tarwotjo
Jurnal Akademika Biologi Vol. 7 No.2 April 2018
Publisher : Departemen Biologi, Fakultas Sains dan Matematika Undip

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Abstract

Serangga dapat berperan sebagai OPT ataupun musuh alami di suatu ekosistem pertanian. Penelitian ini bertujuan untuk mengetahui jenis serangga OPT dan musuh alami dominan, keragaman serta pengaruh faktor fisik lingkungan terhadap keragaman serangga OPT dan musuh alami. Pengambilan sampel dilakukan dua kali yaitu pada masa sebelum dan pasca panen. Setiap pengambilan sampel menggunakan dua metode, yaitu jaring ayun dan metode light trap. Hasil penelitian menunjukkan jumlah individu dan jumlah jenis yang didapatkan sebelum panen lebih tinggi dibandingkan pasca panen. OPT yang dominan, yaitu famili Chrysomelidae, Curculionidae, Sciaridae, Pentatomidae, Cicadellidae, dan Pyralidae. Sedangkan musuh alami yang dominan yaitu famili Staphylinidae, Coccinelidae, Carabidae, Miridae, Aelothripidae, Tachinidae, Formicidae, Salticidae dan Thomisidae. Keragaman jenis OPT dan musuh alami termasuk dalam kategori sedang. Indeks kemerataan OPT sebelum dan pasca panen serta musuh alami sebelum panen termasuk dalam kategori merata sedangkan musuh alami pasca panen termasuk dalam kategori tidak merata. Indeks kesamaan antara kedua musim pengambilan sampel menunjukkan tingkat kesamaan yang bervariasi. Faktor fisik lingkungan kelembaban udara, suhu udara, kecepatan angin dan intensitas cahaya matahari berpengaruh terhadap aktivitas OPT maupun musuh alami di lahan penelitian.
KEANEKARAGAMAN TUMBUHAN BERDASARKAN CIRI MORFOLOGI POLEN DAN SPORA DARI SEDIMEN TELAGA WARNA, DIENG, KAB. WONOSOBO, JAWA TENGAH Nurrahmah Azizah; Sri Widodo Agung Suedy; Erma Prihastanti
Jurnal Akademika Biologi Vol. 5 No. 1 Januari 2016
Publisher : Departemen Biologi, Fakultas Sains dan Matematika Undip

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Abstract

Pollen and spore may be used to identify the name of plants because on pollen and spore there is an outter wall, called exine, which have specific structure and sculpture. This specific morphology of pollen and spore may be easily identified, therefore the name of plant itself may be known directly. The aim of this research is to find out the various of pollen and spore morphology of Telaga Warna sediment and the name of plant itself may be known,moreover the plant diversity and the plant which is dominant around Telaga Warna may be known as well. This research had been conducted with fetched the sediment sample from the edge of Telaga Warna, Dieng, preparation of sample were using chemical, and finally make microscopic preparation.Pollen and spore observed by some parameters: shape, size, polarity, symmetry, aperture, and sculpture. The information, furthermore, analyzed by making description of pollen and spore morphology and quantitative data. The result of this research reaveal that there are 34 kind of plants from pollen and spore observation. The amount of Pteridophytes is 53%, Non-Arboreal Pollen (NAP) is 29%, and Arboreal Pollen (AP) is 18%. The plant which dominant around Telaga Warna is Polypodiaceae, with the value of dominance index is 5,66. Its spore morphology has trilete aperture, heteropolar, bilateral symmetry, and the sculpture is psilate. The average of plant diversity temporally in Telaga Warna is low, with the average value of diversity index is 1,56, however the alteration of vegetation temporally in Telaga Warna is stable dynamics.Keywords: morphology, pollen, spore, Telaga Warna
PERTUMBUHAN POPULASI CHLORELLA VULGARIS BEIJERINCK DENGAN PERLAKUAN PENAMBAHAN LOGAM BERAT TEMBAGA (CU) PADA SKALA LABORATORIUM Hermawan Setiyo Budi Hartanto; Riche Hariyati; Tri Retnaningsih Soeprobowati
Jurnal Akademika Biologi Vol. 2 No. 1 Januari 2013
Publisher : Departemen Biologi, Fakultas Sains dan Matematika Undip

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Abstract

Environmental pollution has become a serious problem in marine environment. Inorganic pollutants was harmful to the environment because difficult to decompose naturally, therefore induce  environmental damage. One anorganic pollutants agent is heavy metal copper (Cu). Algae have a high tolerance to heavy metal copper stress in the environment so it can be used as a bioremediation agent, such as  Chlorella vulgaris Beijerinck. This study aimed to determine the effect of copper to the population growth of Chlorella vulgaris Beijerinck. Research was carried out by inoculated Chlorella vulgaris Beijerinck in seawater culture medium containing copper (Cu) with concentration 0.05 ppm, 0.5 ppm, 5 ppm, and 25 ppm, respectively.  Observation of the growth of Chlorella vulgaris Beijerinck were performed every 24 hours for 14 days by Improved Neubauer Haemocytometer. The results showed that copper with concentration 0.05 ppm and 0.5 ppm increased Chlorella vulgaris Beijerinck  growth populations at day three and  it also inhibit Chlorella growth until day eigth. Chlorella  population then increased sigificantly at day eight until day fourteen of observation.  Copper  with concentration  5 ppm and  25 ppm decreased the population of Chlorella vulgaris Beijerinck and then increased its population at day six. Chlorella population then decreased at ten day of observation.   Key words: growth, heavy metals copper (Cu), Chlorella vulgaris Beijerinck, bioremediation
KEANEKARAGAMAN JENIS DAN PEMANFAATAN EUPHORBIACEAE DI CAGAR ALAM DUNGUS IWUL BOGOR JAWA BARAT Ersha Farah Dea; J Jumari; Erry Wiryani; Laode Alhamd
Jurnal Akademika Biologi Vol. 5 No. 4 Oktober 2016
Publisher : Departemen Biologi, Fakultas Sains dan Matematika Undip

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Abstract

Euphorbiaceae is a potential plant and has a wide distribution. Nature Reserve Dungus Iwul is one area that has many different types of Euphorbiaceae plants. The purpose of this study was to determine the diversity, density and distribution as well as reviewing the use of Euphorbiaceae in Nature Reserve Dungus Iwul, Wirajaya Village, District Jasinga, Bogor, West Java. Fieldwork was conducted in May 2016. Observations were made on a sample plot with an area of 1 Ha include: the name of the species and number of individuals, DBA measurement and measurement of environmental parameters. Utilization survey conducted by interview and literature study. The results showed that the observation plots was found 17 species of Euphorbiaceae. Number of individuals based habitus were 8 individual trees, 31 individual poles, 131 saplings and 192 seedlings. Euphorbiaceae distributed by 70% in the observation plot. Euphorbiaceae used for producing animal and human feed, building materials, firewood, dyes, ornamental plants, traditional medicine and others.Keywords: Species diversity, species density, Euhphorbiaceae
KEANEKARAGAMAN DAN AKTIVITAS ENZIMATIS KAPANG RIZOSFER KACANG MEONGAN (Aeschynomene americana L.) DI DESA SUKOLILO BARAT, KECAMATAN LABANG, KABUPATEN BANGKALAN, MADURA Griffin Natassya; Agung Suprihadi; MG Isworo Rukmi
Jurnal Akademika Biologi Vol. 2 No. 3 Juli 2013
Publisher : Departemen Biologi, Fakultas Sains dan Matematika Undip

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Abstract

Molds are widely distributed in nature, they even present in extreme environment, such as hot and dry soil. Molds which can grow in extreme environment has been adapted to xeric environment by producing enzymes  with  special  characteristics.  The  aim  of  this  study  to  determine  the  diversity  of  molds  from A.americana L. rhizosphere at West Sukolilo Village, Labang district, Bangkalan Regency, Madura and also to examined their cellulolytic and proteolytic activities. Isolation of molds were done by using spread and dilution methods. Molds identification were done by macroscopic and microscopic examined. The molds diversity was calculated using Shannon-Wiener index. Semiquantitative enzyme examination were done using Carboxymethil Cellulose (CMC) agar for cellulolytic ang liquid gelatin 12% for proteolytic. Results of this study showed that mold diversity isolated from   A. americana L. rhizosphere was moderate (1,8-2,7) with total of 43 species, comes from 7 genus i.e. Aspergillus, Penicillium, Fusarium, Aureobasidium, Byssochlamys, Paecilomyces, and Trichoderma.  The  highest  index  of  cellulolytic  produced  by  Aspergillus  sydowii  (2,35),  while  highest proteolytic activity produced by Aspergillus flavus (86%). Keywords : molds, diversity index,xeric, cellulolytic, proteolytic

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