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All Journal BIOTROPIA - The Southeast Asian Journal of Tropical Biology Biopropal Industri BERITA BIOLOGI JURNAL BIOLOGI INDONESIA Squalen Bulletin of Marine and Fisheries Postharvest and Biotechnology ANNALES BOGORIENSES Biosaintifika: Journal of Biology & Biology Education Jurnal Pascapanen dan Bioteknologi Kelautan dan Perikanan Teknologi Indonesia Makara Journal of Science Makara Journal of Technology Jurnal Mahasiswa Mengabdi (JIMAWAbdi) JUPADAI : Jurnal Pengabdian Kepada Masyarakat Jurnal Manajerial dan Bisnis Tanjungpinang Sharia Economic and Management Business Journal (SEMBJ) Journal Of Chemical Process Engineering Annales Bogorienses
YOPI YOPI
Lembaga Ilmu Pengetahuan Indonesia
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OPTIMIZATION PRODUCTION OF XYLANASE BY Bacillus pumilus IN EMPTY FRUIT BUNCH USING 3 L BIOREACTOR Wijaya, Hans; Thontowi, Ahmad; Yopi, Yopi
Teknologi Indonesia Vol 40, No 1 (2017)
Publisher : LIPI Press

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Abstract

Indigenous biomasses, such as empty fruit bunch, contain high xylan and are useful to produce raw xylanase, where this biomasses are very abundant in Indonesia. The focus of this research is to scale up the fermentation product into 3 litter feeds and to record the highest enzyme activity. Fermentation process has been done by using stirred fermentor MBI Winpact One Fermentation System. The isolate marine bacterium Bacillus pumilus has been used to degrade empty fruit bunch to produce raw xylanase. The result for different agitation speed showed that at 150 rpm has the highest xylanase activity. The effect of different aeration flows gives at a rate of 4 VVM achieved the highest enzyme activity and equal to 7.61 U/mL with cell growth equal to 2.06. The Sigma Antifoam C has been successfully being used as defoamer in the production fermentor and can be tolerated by Bacillus pumilus. The comparisons of different medium to generate different enzyme by Bacillus pumilus has achieved xylanase, mannanase, and cellulase, where xylanase has the highest enzyme activity among all of the enzymes produced.
PURIFIKASI DAN KARAKTERISASI ENZIM PEKTINASE DARI ASPERGILLUS USTUS BL5 Yopi, Yopi; Rahmani, Nanik; Andriani, Ade; Dewi, Fitria; Meryandini, Anja
BERITA BIOLOGI Vol 12, No 3 (2013)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v12i3.646

Abstract

Pectinase is an enzyme that could hydrolyze pectin into galacturonic acid. Natural pectinase was produced by microbes such as bacteria, yeast, fungi and Actinomycetes. Application of pectinase in industry were mainly in juice industry, textile, pulp, tea, cocoa and coffee fermentation. In this research, we conducted purification and characterization of pectinase produced by Aspergillus ustus BL5 in submerged fermentation using commercial pectin. The result showed that the optimum of pectinase production was reached at 120 hours fermentation process with specific activity 0.59 U/mg. The crude extract of pectinase was then concentrated using PEG 6000 and purified by Sephadex G-75 gel filtration chromatography. There were 2 fractions contained pectinase which the activity was 4.15 U/mg (pectinase A) and 3.3 U/mg (pectinase B), respectively. Compare to crude extract, the yield product of pectinase A and B increased 6.94 and 5.53 times, respectively. The purified pectinase A have optimum temperature at 50 oC and optimun pH at 5.
PERTUMBUHAN OPTIMAL BAKTERI LAUT PSEUDOMONAS AERUGINOSA LBF-1-0132 DALAM SENYAWA PIREN Safitriani, Safitriani; Thontowi, Ahmad; Yetti, Elvi; Suryani, Suryani; Yopi, Yopi
JURNAL BIOLOGI INDONESIA Vol 13, No 1 (2017): JURNAL BIOLOGI INDONESIA
Publisher : Perhimpunan Biologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/jbi.v13i1.3100

Abstract

ABSTRACTPyrene is a high molecular weight chemical compound belongs to polycyclic aromatic hydrocarbon (PAHs) group that are difficult to degrade by environment. Biodegradation techniques using indigenous marine bacteria are used to be as an effort to reduce pollutants that are carsinogenic. The objectives of this research are to screen of 18 marine bacteria isolates qualitatively by sublimation method and quantitatively by growth test and to optimize degradation activity of marine bacteria isolates by pyrene concentration and cell concentration. Identification by 16S rDNA and phylogenetic tree analysis were conducted to determine the molecular basis of bacterial identity. The result of sublimation showed that 15 isolates were positive result for pyrene degradation and classified to 3 groups. The first group consisted of 5 isolates that can produce clear zone, while the second group are 5 isolates with isolate color changes. The third group have both of activities. Growth test showed that isolate LBF-1-0132 has high potency to degrade pyrene compound. Isolate LBF-1-0132 is capable of degrading pyrene compounds optimally at concentration of 600 ppm and optimum cell concentration of 20. Based on 16S rDNA gene analysis, isolate LBF-1-0132 is Pseudomonas aeruginosa with 98% identity.Keywords :pyrene, marine bacteria, optimization, 16S rDNA identification
ISOLATS BAKTERI INDIGENOUS PENGHASIL MILK-CLOTTING PROTEASE UNTUK FERMENTASI KEJU Rahmani, Nanik; Sari, Yana Nurita; Palupi, Nurheni Sri; Yopi, Yopi
JURNAL BIOLOGI INDONESIA Vol 9, No 2 (2013): JURNAL BIOLOGI INDONESIA
Publisher : Perhimpunan Biologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/jbi.v9i2.166

Abstract

The aims of this research is to isolation of bacteria that potential to produce of milk clotting protease enzymes fromfermented food that will be used as a substitute for rennet in cheese making. There are five food fermentations suchas tauco, tempeh, red oncom, sticky tape, and pickled mustard greens that are used as a source for isolation of bacteriathat could produce milk clotting protease. The results obtained four isolates proteolytic bacteria from two fermentedfood samples, three isolates bacteria from tauco (TCN 1, TCN 2, TCN 3) and one isolate from pickledmustard greens (DSN 1). Based on 16S rDNA, these isolates were identified as Bacillus sp. Bacterial isolate TCN 1has a milk clotting activity of 29.17 U/mL, whereas bacteria isolates of TCN 2, TCN 3 and DSN 1 have activities of70 U/mL achieved at the 24 hours incubation, respectively. The proteolytic activities of bacteria isolates TCN 1,TCN 2, TCN 3 and DSN 1 at the 24 hours fermentation process were 0.0117 U/mL, 0.0021 U/mL, 0.0150 U/mL,and 0.200 U/mL, respectively. The ratio of milk clotting protease activity and the proteolytic activity for bacteriaisolates TCN 1, TCN 2, TCN 3 and DSN respectively were 5402, 175000, 7292, and 3333. This showed that theenzyme from bacterial isolates TCN 2 can be used as an alternative to rennin in cheese making.Keywords: milk clotting protease, cheese, calf rennet, fermentation food
PEMURNIAN PARSIAL DAN KARAKTERISASI AMILASE DARI BAKTERI LAUT ARTHROBACTER ARILAITENSIS LBF-003 Rahmasari, Dianti; Wijanarka, Wijanarka; Pujiyanto, Sri; Rahmani, Nanik; Yopi, Yopi
JURNAL BIOLOGI INDONESIA Vol 12, No 1 (2016): JURNAL BIOLOGI INDONESIA
Publisher : Perhimpunan Biologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/jbi.v12i1.2323

Abstract

Starch is an abundant carbon source in nature, and ?-amylase (1, 4-?-D-glucanohydrolase; EC 3.2.1.1), which hydrolyzes ?-1, 4-glucosidic linkage in starch-related molecules. Microbe ?-amylase production is a hydrolytic enzyme and one ofinterest in its microbial production has increased dramatically due to its wide spread use in food, textile, baking anddetergent industries in recent years. Here we report ?-amylase from marine bacterium which was purified andcharacterized, as well as analyzed its hydrolysis product on starch. The enzyme of Arthrobacter arilaitensis partiallypurified by acetone precipitation with 90% and ion exchange chromatography produced specific activity 0.25 U/mg and0.38 U/mg, and it?s purity rate increased until 1.14 fold compared with former crude extract. Purifed extracelluler amilasehad an optimum activity at temperature 50°C and pH 9.0. An apparent molecular mass was between 50-75 kDa, asestimated by zimogram electrophoresis. Hydrolysis products of this enzyme on starch were maltose, maltotriose andmaltoheptaose.Keywords: alfa amylase, marine bacterium, Arthrobacter arilaitensis, purification, charaterization
KARAKTERISASI BIODEGRADASI SENYAWA POLIAROMATIK DIBENZOTHIOPHENE OLEH BAKTERI LAUT NOVOSPHINGOBIUM MATHURENSE LBF-1-0061 Tanjung, Puspasari Noerwan; Yetti, Elvi; Thontowi, Ahmad; Suprihadi, Agung; Purwantisari, Susiana; Yopi, Yopi
JURNAL BIOLOGI INDONESIA Vol 12, No 2 (2016): JURNAL BIOLOGI INDONESIA
Publisher : Perhimpunan Biologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/jbi.v12i2.2894

Abstract

ABSTRACTDibenzothiophene is one of polycyclic aromatic hydrocarbon (PAH) compound containing sulfur element. This compound has toxicity, mutagenic and quiet persistent in environment. From sreening test, it was known that isolate LBF-1-0061 was potential to degrade dibenzothiophene. The objectives of this study are to study dibenzotiophene degrading capability by marine bacteria isolate LBF-1-0061 using screening test; analysis of dibenzothiophene residue by GC/MS and identifiy the isolate by molecular identification. The result of this research shown that LBF-1-0061 isolate could grow up to 100 ppm of dibenzotiophene. This isolate also presented degrading capability approximately 37.5% of dibenzotiophene in 14 days incubation. Based on partial 16S rRNA gene analysis, LBF-1-0061 was identified 99% as Novosphingobium mathurense strain SM117.Keywords: sea bacteria, biodegradation, dibenzotiofen, hydrocarbon aromatic polisiclic
KERAGAMAN BAKTERI LAUT PENDEGRADASI ALKANA DAN POLIAROMATIK HIDROKARBON DI PULAU PARI JAKARTA Thontowi, Ahmad; Yopi, Yopi
JURNAL BIOLOGI INDONESIA Vol 9, No 1 (2013): JURNAL BIOLOGI INDONESIA
Publisher : Perhimpunan Biologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/jbi.v9i1.154

Abstract

Minyak mentah merupakan salah satu sumber pencemaran di lingkungan laut. Degradasi oleh bakteri memegangperanan penting dalam bioremediasinya. Sejumlah 66 bakteri laut dari Pulau Pari, Kepulauan Seribu Jakarta telahdiisolasi, dianalisa berdasarkan gen 16S rDNA, dan diuji kemampuannya dalam mendegradasi minyak. Berdasarkananalisis gen 16S rDNA diperoleh lima kelompok bakteri pendegradasi minyak, yaitu α-proteobakteria (43.6%), γ-proteobakteria (48.5 %), Flavobakteria (4.5 %), Aktinobakteria (1,5 %), dan Bacillales (1,5%). Bakteribakteritersebut mampu mendegradasi komponen minyak (senyawa alkana dan poliaromatik hidrokarbon). γ-Proteobakteria dan α-proteobakteria mempunyai peran penting dalam bioremediasi minyak di kawasan lingkunganlaut di Pulau Pari. Dari hasil tersebut membuktikan bahwa bakteri pendegradasi minyak dari Pulau Pari sangatberagam.Kata kunci: minyak, laut, bakteri, bioremediasi, alkana, poliaromatik hidrokarbon
Substrates Preparation from Woody Tropical Waste Biomass for Biohydrogen Production Susilaningsih, Dwi; Harwati, Theresia Umi; Anam, Khairul; Yopi, Yopi
Makara Journal of Technology Vol. 12, No. 1
Publisher : UI Scholars Hub

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Abstract

Substrates Preparation from Woody Tropical Waste Biomass for Biohydrogen Production. Addressing to the global warming problem, energy crisis and pollution, hydrogen production by micro-organisms using biotechnological approach should be considered, since it fulfils the recent society requirement to safely produce, renewable and environmental friendly energy. Hydrogen is one of the most promising green energy sources, because it is easily converted to electricity and cleanly combustible. There are three types of micro-organisms for hydrogen production, the first is cyanobacteria through the photosynthesis process, the second is anaerobic bacteria, which use organic substances as electron donor and energy and convert them to hydrogen, the third is photosynthetic bacteria, somewhat between photosynthetic and anaerobic bacteria, which are capable of converting the organic substances to hydrogen at a fairly high rate. We propose to use the abundant waste biomasses in Indonesia for hydrogen production by the microbial system. Our focus research is the production of hydrogen from waste biomasses by two-stage fermentation systems, which combine the conversion process of monomer biomasses to lactic acid by Lactobacillus sp. and the conversion process of lactic acid to hydrogen by photosynthetic bacteria. In this research, two kind substrates preparation were apply for woody waste biomass such as chemical hydrolysis and biological methods with several treatments. The results of the substrate preparation state showed that hydrolyses process of biomasses using strong acid are yielded total sugar about 70-90% of previous original content. Moreover, hydrolyses process using weak/diluted acid are yielded total sugar about 4-30% of original sugar. Furthermore, the biological treatments of degradation of woody waste biomasses are yielded total sugar about 0-10% (by single culture) and 10-50% (by consortium). Those hydrolysates substrates will use for fermentation two stages of lactate fermentation and conversion by photosynthetic bacteria in order to produce hydrogen gas.
Sugarcane Bagasse as a Carrier for the Immobilization of Saccharomyces cerevisiaein Bioethanol Production Anita, Sita Heris; Mangunwardoyo, Wibowo; Yopi, Yopi
Makara Journal of Technology Vol. 20, No. 2
Publisher : UI Scholars Hub

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Abstract

Sugarcane bagasse was used as a carrier to immobilize Saccharomyces cerevisiae in bioethanol production. This research aims to study the potential use of sugarcane bagasse as an alternative carrier for cell immobilization and improvement in the production process of cell immobilization in bagasse. The results showed that the physical characteristics of sugarcane bagasse as a carrier were water content (7.77 ± 0.35%), water retention (4.80 ± 0.44 g/g), water absorption index (8.58 ± 0.22 g/g), and lignin content (24.40 ± 1.52 %). Determination of cell retention was performed in an inoculum volume of 50 mL yeast suspension with various carrier weights (2.5, 5, 10, and 20 g). The highest cell retention was obtained in ratio of 2.5 g carrier/50 mL cell suspension with cell retention of 5.41 ± 1.06 mg/g, or known as biocatalyst. Biocatalyst, as much as 1.5, 3, 4.5, and 6 g, were used as inoculum for a 24 hour bioethanol fermentation. The best concentration and productivity of bioethanol, obtained by using 3 g of biocatalyst, were 23.95 ± 0.28 g/L and 1.24 ± 0.01 g/L/hours. The average of bioethanol yield for a 24 hour fermentation by using immobilized cells was three times higher than the free cells system.
BIODEGRADASI FENANTREN OLEH BAKTERI LAUT Pseudomonas sp KalP3b22 ASAL KUMAI KALIMANTAN TENGAH Murniasih, Tutik; Yopi, Yopi; Budiawan, Budiawan
Makara Journal of Science Vol. 13, No. 1
Publisher : UI Scholars Hub

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Abstract

The Biodegradation of Phenanthren by Marine Bacteria Pseudomonas sp KalP3b22 from Kumai Central Borneo. The study of the potential marine bacteria that degrade Polycyclic Aromatic Hydrocarbons (PAHs) was already done among several marine bacterium isolated from the contaminated sea water collected in Kumai Port area. The biodegradation rate of phenanthrene by selected bacteria Pseudomonas sp Kalp-3b22 was 59,5% after 29 days cultivation. The structural determination of degradation product was deduced as 1-naphtalenol.
Co-Authors A.A. Ketut Agung Cahyawan W ADE ANDRIANI Agung Pranata, Gandi Ahmad Thontowi Anam, M. Khairul Anja Meryandini Awan Purnawan Bambang Prasetya Budiawan Budiawan Dewi, Fitria DWI SUSILANINGSIH Elvi Yetti, Elvi Endang Sukara Gulo, Happy Christman Hapzi Ali Harayama, Shigeaki Harayama, Shigeaki Harwati, Theresia Umi Helprida Simamora Hidayat, Haris Suganda Ilmiah, Zidny Jonmaianto Sihombing La Ifa Maggy T Suhartono Maggy Thenawidjaja Suhartono Martin, Andri Fadillah Muhammad Iqbal NANIK RAHMANI Nuryana, Isa Nuryati Nuryati Nuzul Farini, Nuzul Okazaki, Fumiyoshi Okazaki, Fumiyoshi Oktavianti Oktavianti Palupi, Nurheni Sri Purwoko, Agus PUSPITA LISDIYANTI Putra, Filemon Jalu Nusantara Putri, Feby Heryani Rahmasari, Dianti Rahmasari, Dianti Riznando, Reza Rohmattusolihat Rohmattusolihat, Rohmattusolihat ROHMATUSSOLIHAT ROHMATUSSOLIHAT Ruth Melliawati Safitriani, Safitriani Safitriani, Safitriani Sari, Yana Nurita Sari, Yana Nurita Septa Diana Nabella SHANTI RATNAKOMALA Sita Heris Anita Sri Hartati Sri Pujiyanto Suhanda La Tima, Suhanda Sulastri Sulastri Suryani Suryani Susiana Purwantisari Tanjung, Puspasari Noerwan Tanjung, Puspasari Noerwan Theresia Harwati, Theresia Tun Tedja Irawadi Tutik Murniasih Urip Perwitasari, Urip Wahyudi, Muhammad Eko WIBOWO MANGUNWARDOYO Wijanarka Wijanarka Wijaya, Hans Yantyati Widyastuti