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All Journal Bioma : Berkala Ilmiah Biologi SAINS DAN MATEMATIKA Jurnal Akademika Biologi Microbiology Indonesia Jurnal Biologi Tropis Indonesian Food and Nutrition Progress Jurnal Mikologi Indonesia Biosaintifika: Journal of Biology & Biology Education Berkala Bioteknologi Jurnal Biologi Tropika NICHE Journal of Tropical Biology AL-HAYAT: Journal of Biology and Applied Biology Jurnal Pascapanen dan Bioteknologi Kelautan dan Perikanan Jurnal Ilmiah Biologi Eksperimen dan Keanekaragaman Hayati (J-BEKH) Jurnal Riset Biologi dan Aplikasinya Generics: Journal of Research in Pharmacy Generics : Journal of Research in Pharmacy
MG Isworo Rukmi
Departemen Biologi, Fakultas Sains Dan Matematika, Universitas Diponegoro
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Education Environmental Science Health Professions Immunology & microbiology Mathematics Medicine & Pharmacology

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Produksi Protease Alkalis Termostabil Dari Aspergillus flavus DUCC- K225 Dengan Ammonium Sulfat Sebagai Sumber Nitrogen Putra, Mohammad Affan Dwica; Rukmi, MG Isworo; Pujiyanto, Sri; Mulyani, Nies S
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 (108.467 KB) | DOI: 10.14710/bioma.21.1.60-64

Abstract

Protease  is a protein hydrolytic enzyme which  can be generated by a variety of microorganisms, including  mold. Aspergillus flavus K225, DUCC is indigenous mold isolated from lime soil of Madura which is  have potential as a alkaline protease  producer. This research aims was to know the effect  of ammonium sulfate as nitrogen source for the production of protease enzymes by Aspergillus flavus DUCC-K225. The production of alkaline  protease were conducted in  submerged culture medium with agitation. Fermentation medium used was modification Czapeks Dox Broth containing 2% casein. Incubation is carried out for 7 days.  The results showed that ammonium sulfate is a good source of nitrogen for growth and production of aklaine protease enzyme, which is demonstrated by  higher dry weight, the protease activity, the protein content and the specific activities, comparing those  on standard medium using sodium nitrate as N source. 
Pengaruh Pepton dan Waktu Inkubasi terhadap Produksi Inulinase oleh Pichia alni DUCC-W4 Berbahan Dasar Tepung Umbi Dahlia (Dahlia variabilis Willd.) Wijanarka, Wijanarka; Rukmi, MG Isworo; Sutrisna, Lynda -
Bioma : Berkala Ilmiah Biologi Vol. 09, No. 2, Tahun 2007
Publisher : Departemen Biologi, Fakultas Sains dan Matematika, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/bioma.9.2.52-57

Abstract

Sumber pemanis alami alternatif yang aman bagi kesehatan dapat diproduksi dari inulin dalam umbi dahlia (Dahlia variabilis Willd.) dan dapat dihidrolisis dengan inulinase dari Pichia alni DUCC-W4. Peningkatan produksi inulinase dapat dilakukan dengan menambahkan sumber nitrogen organik berupa pepton ke dalam medium. Hasil penelitian menunjukkan aktivitas inulinase tertinggi sebesar 1,237 IU/mL (P2T3), aktivitas invertase tertinggi sebesar 1,568 IU/mL (P2T3) dan aktivitas katalitik inulinase sebesar 0,824 IU/mL (P2T2) diperoleh melalui rasio S/I dengan membandingkan aktivitas invertase (S) dan aktivitas inulinase (I). Kesimpulan dari penelitian ini adalah penambahan pepton dengan berbagai konsentrasi (0%; 0,5% dan 1%) dan lama waktu inkubasi (12 jam, 18 jam dan 24 jam) tidak meningkatkan produksi inulinase Pichia alni DUCC-W4.
Uji Kemampuan Produksi Fruktooligosakarida (FOS) dari Kelompok Aspergillus niger DUCC Whinarsih, Whinarsih; Lunggani, Arina Tri; Rukmi, MG Isworo
Bioma : Berkala Ilmiah Biologi Vol. 15, No.1, Tahun 2013
Publisher : Departemen Biologi, Fakultas Sains dan Matematika, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (49.994 KB) | DOI: 10.14710/bioma.15.1.42-45

Abstract

Prebiotic is a food supplement that can not be digested in the human’s gut, it can stimulate the growth of beneficial microorganisms in the intestine and improve human’s health. FOS is a fructan type of oligosaccharide which is have a potential as a natural prebiotic, it  can be produced by several microorganisms, including A. niger group. The aim of this research was to examined the FOS production of   three isolates of A. niger group from DUCC collection (i.e. DUCC F123, DUCC F129 and DUCC F102). FOS production was determined by measuring the reducing sugar using  DNS method. The result showed that all isolates have the capability in producing  FOS suspected kestose with the degree of polymerization 3.545; 3.215; 3.049 respectively. Keywords:FOS, fructosyltransferase, Aspergillus niger, prebiotic
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
Isolasi dan Identifikasi Bakteri Pelarut Fosfat dari Tanah Gambut Larasati, Ella Dewani; Rukmi, MG Isworo; Kusdiyantini, Endang; Ginting, R Cinta Badia
Bioma : Berkala Ilmiah Biologi Vol. 20, No. 1, Tahun 2018
Publisher : Departemen Biologi, Fakultas Sains dan Matematika, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (383.652 KB) | DOI: 10.14710/bioma.20.1.1-8

Abstract

Phosphate (P) are macronutrients that necessary for growth and development of plants, But the availability of phosphate dissolved in the ground are very limited because trend is bound to minerals ground form phosphate complexs. One of the alternative to improve the efficiency of phosphate is by utilize phosphate solubilizing bacteria. Phosphate solubilizing bacteria is bacteria capable of dissolving phosphate that is not available become available, so that it can be absorbed by plants. Peat soils can be used as a source of phosphate solubilizing bacteria because , peat soils formed from litter and organic matter so, many microorganisms which live in peat soils one of them is a phosphate solubilizing bacteria. The aim of this research is to isolat, identify bacteria to species level using Biolog system GenIII Mircoplate, and test the ability of phosphate dissolution. The isolation is done with the methods spread plate in a media pikovkaya solid and testing the ability to isolat qualitatively glimpsed clear zone around colonies, measuring phosphate solubilizing index. testing the ability isolats quantitatively by measuring solubility phosphate using spektrofotometer, and identification isolats using Biolog System. Eighteen isolates phosphate solubilizing bacteria successfully obtained from of peat soils, two isolates of them potential in solubilizing phosphate, According to Biolog system the second isolates identified as Pseudomonas tolaasii (isolate PG2T.5) and a Bacillus pumilus (isolate PG3TT.2), each is about phosphate dissolved successive of 24,81 mg/L and 22,62 mg/L Key words: Peat Soil, Isolation, Phosphate Solubilizing  Bacteria, Biolog System Identification
Eksplorasi Jamur Alkalotoleran dari Desa Sukolilo Barat, Kecamatan Labang, Kabupaten Bangkalan, Madura, Jawa Timur Lusiana, Helga; Rukmi, MG Isworo; Raharjo, Budi
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 (3031.181 KB) | DOI: 10.14710/bioma.16.1.10-17

Abstract

Mold exploration from limestone hills West Sukolilo  village, District Labang, Bangkalan, Madura, East Java,  conducted to found the  alkalotolerant mold isolates and investigate their  amylolytic, proteolytic, and cellulolytic activity. Mold isolation were done using spread plate and dilution method  on  PDA and CMA at pH 8.0, 9.0, and 10.0. Twenty-seven mold isolates have been found consist of  four genus  i.e. Aspergillus, Fusarium, Curvularia, and Trichoderma. The result of amylolytic test  showed Trichoderma longibrachiatum (IMD-26) have the  highest activity at pH 8, while  Fusarium sp 2 (IMD-24) showed the highest activity at pH 9. Aspergillus flavus (IMD-7) showed highest proteolytic activity at pH 8, while Hyphomycete (IMD-27) showed the highest activity at pH 9. The highest cellulolytic activity at pH 8 showed by Trichoderma harzianum (IMD-25) and pH 9 by Fusarium sporotrichoides (IMD-20). Keyword : alkalotoleran mold, amylolytic, proteolytic, cellulolytic.
Diversitas Kapang Serasah Daun Talok (Muntingia calabura L.) Di Kawasan Desa Sukolilo Barat, Kecamatan Labang, Kabupaten Bangkalan, Madur Miranti, Arum Krisna; Rukmi, MG Isworo; Suprihadi, Agung
Bioma : Berkala Ilmiah Biologi Vol. 16, No.2, Tahun 2014
Publisher : Departemen Biologi, Fakultas Sains dan Matematika, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (182.403 KB) | DOI: 10.14710/bioma.16.2.58-64

Abstract

Leaf litter is one kind of substrate which is good for mold’s growth because of its organic matters content particularly cellulose. Research on mold diversity on Talok (Muntingia calabura L.) leaf litter which grow abundance at Sukolilo Barat Village, Labang Subdistrict, Bangkalan, Madura was conducted in order to determined the diversity and to isolate xerophilic mold as well as to examined the enzymatic activity of the isolates. The isolation has been done by direct and indirect method on DG18 agar, MEA, and OA from three samples which is taken purposively. The enzyme activities observed were cellulolytic, amylolitic and proteolytic at 310C temperature. The results showed that 24 isolates found were come from 3 genus i.e. Aspergillus, Curvularia and Fusarium. The Aspergillus was the largest number found. The Shannon-Wiener Index of Diversity showed that the diversity of three leaf litter samples categorized medium. The highest cellulolytic, amylolitic and proteolytic activity at 310C incubation were showed by A. tamarii (ISM 1), A.aculeatus (ISM 10) , A. terreus sp. 3 (ISM 17) respectively. Keywords : Diversity, mold, talok litter leaf, Madura
Flavonoids Production Capability Test of Tea Mistletoe (Scurrula atropurpurea BL . Dans) Endophytic Bacteria Isolates Priyanto, Jepri Agung; Pujiyanto, Sri; Rukmi, Isworo
JURNAL SAINS DAN MATEMATIKA Volume 22 Issue 4 Year 2014
Publisher : JURNAL SAINS DAN MATEMATIKA

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (558.599 KB)

Abstract

Tea Mistletoe (S. Atropurpurea BL. Dans) is a medicinal plant species used as anticancer because it contains some flavonoids compounds are chalcones, c-glycoflavonols, chatechin and quercetin. The ability of endophytic bacteria to produce similar bioactive compounds with its host plant is potential source to get flavonoids compounds. This research aims to know ability of endophytic bacteria in produce flavonoids compounds in vitro. Each isolate was fermented in submerged culture with 0.1% soluble starch, 0.5% pepton, and 0.15% yeast extract medium for 5 days, then extracted with ethyl acetate. Flavonoid content of the extract then was tested qualitatively and confirmation test used thin layer chromatography. Qualitative test results showed that crude extract from isolates B4, B5, B10, B17, and B19 positive containing flavonoids. The most potent extract were B10 and B19 tested by thin layer chromatography. Two of these extracts had the same Rf value with quercetin, thus endophytic bacteria from tea mistletoe can produce flavonoids in vitro.
KEANEKARAGAMAN ASPERGILLUS PADA BERBAGAI TRADISIONAL SIMPLISIA JAMU Rukmi, Isworo
JURNAL SAINS DAN MATEMATIKA Volume 17 Issue 2 Year 2009
Publisher : JURNAL SAINS DAN MATEMATIKA

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (5913.821 KB)

Abstract

ABSTRACT---The  presence  of Aspergillas sp. in the simplisia  commonly consumed by Javanese people as a  traditional  medicine has been done. The  eight  simplisia  examined were:  kunyit  rhizome (Cucurma domesfica Val.), temuireng  rhizome (Cucurma aeroginosae), daun sambiloto (Andrographis paniculata), temulawak rhizome (Cucurma xanthorhizu), and mahkota  dewa (Phaleria macrocarpa). Sixteen Aspergillus  species were found from the samples, came from the niger,  flavus, versicolor, wentii, fumigatus, ochraceus dan ornatus  group.  Isolates found  in  this  study  were A. parositicus, A. flavas,  A. oryzae, A. tamarin, A. clavato-flavus, A. flavofurcatis, A. tubingiensis, A. awamori, A. ochraceus, A. sulphureus, A. melleus, A. ornatus, A. brunneo-uniseriatus, A. versicolor, A.  wentii, and A. fumigatus,  the first six are the member of flavus group  that  found  in  all  simplisia samples. Nine species of the isolatesknown as mycotoxin producers.Keywords : Aspergillus, simplisia, mikotoksin
Aktivitas Enzim dan Identifikasi Fenotipik Isolat Kapang Aspergillus Kelompok Flavi Dari DUCC (Diponegoro University Culture Collections) Karima, Radhita; Rukmi, MG Isworo; Kusumaningrum, Hermin Pancasakti
Bioma : Berkala Ilmiah Biologi Vol. 22, No 1, Tahun 2020
Publisher : Departemen Biologi, Fakultas Sains dan Matematika, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (438.824 KB) | DOI: 10.14710/bioma.22.1.1-7

Abstract

Fungi has an important role as decomposer since they can produce hydrolytic enzymes.   The enzyme produced by fungi can be useful for industrial and biotechnology purposes.  Aspergillus section Flavi are known to have the ability in producing several enzymes. The aims of this study were to find out the ability of  Aspergillus  section  Flavi  from  Diponegoro  University  Culture  Collection  in  producing  amylase, protease  and  cellulase  enzymes  and  also  identify  the  species  using  phenotypic  method.  The  fungal enzymatic activity was examined by calculating enzymatic index on specific media. The results showed that all isolates have a potential as enzyme producers.  Phenotypic identification were characterized based on  macro- and micromorphology.  Isolates F130, F80CB, F138 dan F10A were identified as A.tamarii, while F43 and F20A were identified as A.flavus.
Co-Authors A N S Rini Agung Suprihadi Agung Suprihadi Ahmad Thontowi Anam, M. Khairul Ansalakhul Balayatin Ni’mah Anto Budiharjo Arina Tri Lunggani Arina Tri Lunggani Arum Krisna Miranti, Arum Krisna Astuti, Luluk Aviyani Dwi Aulia, Muhammad Hilman Budi Raharjo Budi Raharjo Budihardjo, Kadarwati Chairunnisaa Jabal Rahmah Chatarina Umbul Wahyuni Dahniar Saraswati Dani Sukma Saefunida Devia Kusmawati Arfina Devia Kusmawati Arfina Diani Ajeng Prahesti Diani Kurniawati Dicky Setiawan Dina Devina Anggraeni Dwi Agustiyani Muslichah Ekawati, Nuraini Elvi Yetti Endang Kusdiyantini Endang Kusdiyantini Enny Fachriyah Entis Sutisna Fathika Fitrania Fathika Fitrania Febrianty, Debby Ananda Fitri Wulandari Ginting, R Cinta Badia Griffin Natassya Handayani, Salsabila Putri Hapzi Ali Helga Lusiana, Helga Hermin Pancasakti Kusumaningrum Indra Prawira Jepri Agung Priyanto, Jepri Agung Karima, Radhita Khodijah Baharun Khoirin Nisa Khoirin Nisa Kristina Kristina Laelatul Baniyah Lailatul Mubarokhah Larasati, Ella Dewani Luluk AD Astuti Luthfian Nur Afifi Lynda - Sutrisna Mahardhika, Wahyu Aji Mangasa Tua Pandapotan Siregar Mulyani, Nies S Muslichah, Dwi Agustiyani Nani Mulyani Natasia, Novera Nopvita Windi Astuti Norma Sainstika Pangestu Novik Nur Hidayat Nur Amalia Firdausa Nuraeni, Pratika Nurcahyo, Rizky Pitaloka, Gendis Angger Prabhata, Wimzy Rizqy Putra, Mohammad Affan Dwica Putri Ramadhani Rahmah, Chairunnisaa Jabal Ratna Cempaka Lingga Rejeki Siti Ferniah Ridho Mathori Ikhwan Ristia Rachmatunnisa Rohana, Evieta S Pujiyanto Sabrini, Zalia Sari, Anisa Rachma Sasikirana, Widyandani Sekar Ayu Yogyaswari Septiani, Arom Sesaria Esa Sekar Ardini Siregar, Mangasa Tua Pandapotan Sitepu, Harum Siti Nur Jannah Siti Nur Jannah Siti Nur Jannah Soowanayan, Chumporn Sri Pujiyanto Sri Pujiyanto Suetrong, Satinee Susiana Purwantisari Utami, Linda Ayu w wijanarka Wahyu Aji Mahardhika Wahyu Aji Mahardhika Whinarsih, Whinarsih Widayu Mutiya Ramadhani Wijanarka Wijanarka Wijanarka, W Yopi Yopi