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All Journal Jurnal Ilmu Pertanian Indonesia BIOTROPIA - The Southeast Asian Journal of Tropical Biology Biopropal Industri BERITA BIOLOGI JURNAL BIOLOGI INDONESIA ANNALES BOGORIENSES Teknologi Indonesia Quality : Jurnal Kesehatan Makara Journal of Science Annales Bogorienses
NANIK RAHMANI
Research Center for Biotechnology,Indonesia Institute of Sciences, Jl Raya Bogor KM.46 Cibinong, Bogor, 16911, Indonesia
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Immunology & microbiology Industrial & Manufacturing Engineering Medicine & Pharmacology Nursing Veterinary

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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
Enzymatic Hydrolysis of Mannan from Konjac (Amorphophallus sp.) Using Mannanase from Streptomyces lipmanii to Produce Manno-oligosaccharides Sasongko, Ashadi; Yopi,; Rahmani, Nanik; Lisdiyanti, Puspita; Saepudin, Endang
Makara Journal of Science Vol. 19, No. 3
Publisher : UI Scholars Hub

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Abstract

Mannan is an abundant polysaccharide that can be found in konjac (Amorphophallus sp.). Mannan can be enzymatically hydrolyzed using mannanase to produce manno-oligosaccharides which can be used as a prebiotic. The aims of this research are to determine the production time of mannanase from Streptomyces lipmanii, perform enzyme characterization, optimize the hydrolysis time, and characterize the hydrolysis product. A qualitative assay using the indicator Congo red showed that S. lipmanii generated a clear zone, indicating that S. lipmanii produced mannanase in konjac medium and possessed mannanolytic activity. Enzyme activity was determined through reducing sugar measurement using the dinitrosalycylic acid method, and optimum enzyme production was achieved at the second day of culture. Characterization of the enzyme showed that hydrolysis was optimum at pH 7 and at a temperature of 50 oC. The reducing sugar content was increased by an increasing the hydrolysis time, and reached an optimum time at 2 h. The degree of polymerization value of three was achieved after 2 h hydrolysis of mannan from konjac, indicating the formation of oligosaccharides. Analysis by thin layer chromatography using butanol, acetic acid, and water in a ratio of 2:1:1 as eluent showed the presence of compounds with a retention time between those of mannose and mannotetrose. Confirmation was also performed by HPLC, based on the retention time.
BIOPROSPECT OF BACTERIAL FIBRINOLYTIC PROTEASE FROM BEKASAM OF LONGTAIL TUNA AS ANTITHROMBOTIC AGENT: LITERATURE REVIEW AND BIBLIOGRAPHY STUDY Trianes, Juwy; Ethica, Stalis N.; Afriansyah, M. Ardi; Darmawati, Sri; Rahmani, Nanik; Zilda, Dewi S.
Quality : Jurnal Kesehatan Vol. 18 No. 2 (2024): Quality : Jurnal Kesehatan
Publisher : Politeknik Kesehatan Kemenkes RI Jakarta I

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36082/qjk.v18i2.2016

Abstract

Introduction:Cardiovascular disease (CVD) is the leading cause of death worldwide, with thrombosis being a significant risk factor. Fibrinolytic proteases have potential as antithrombotic agents and could be developed into CVD drugs. Indonesia's traditional fermented products, such as fish Bekasam, are rich in microorganisms, including fibrinolytic protease-producing bacteria, yet their potential for CVD treatment is underexplored. Fish paste in Indonesia serves as a protein source and a reservoir of bacterial diversity, which could aid in discovering new antithrombotic agents. Objective: This literature review examines research trends over the past decade on fibrinolytic protease-producing bacteria in traditional fermented products, with a focus on Bekasam made from Longtail Tuna. This fermented food is an alternative source for obtaining bacteria with antithrombotic properties. Methods: Data for this review were sourced from Google Scholar, PubMed, and the dimension.ai database, using the keyword "bacterial fibrinolytic protease" from 2015 to 2024. Visualization of global research trends was performed using VOS viewer software. Results: The review found a scarcity of studies on fibrinolytic proteases from Bekasam bacteria. Lactic acid bacteria involved in Bekasam fermentation possess proteolytic enzymes that degrade fish protein into peptides and amino acids, potentially offering antithrombotic properties. This suggests natural protease sources from traditional fermented foods have significant biomedical potential. Research on fibrinolytic protease-producing bacteria from Bekasam in Indonesia is limited and requires further development. Exploring these local fermented products could yield innovative sources for thrombosis treatment
Bioprospecting of Pectinase-Producing Bacteria from Marine Actinomycetes Hasanah, Neneng; Nadhifah, Hana; Rahayuningsih, Mulyorini; Atikana, Akhirta; Ratnakomala, Shanti; Lisdiyanti, Puspita; Rahmani, Nanik
Jurnal Ilmu Pertanian Indonesia Vol. 30 No. 4 (2025): Jurnal Ilmu Pertanian Indonesia
Publisher : Institut Pertanian Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18343/jipi.30.4.689

Abstract

Pectinase is used in a variety of industries, including fruit juice production, textile processing, papermaking, biodegumming, coffee and tea manufacturing, medicines, feed, and nutraceuticals. The demand for pectinase enzymes grows year after year. Industrial applications require high-activity enzymes that can increase considerable product yields while also improving based on needs and byproduct use. Indonesia's industry continues to rely on imported pectinase enzymes. Indonesia, on the other hand, possesses megabiodiversity, particularly marine microorganisms, which have the potential to provide new enzymes with high activity for industrial applications. This work aims to undertake bioprospecting of marine actinomycetes producing pectinase enzymes that have the capacity to hydrolyze pectin polymer, both from commercial and biomass sources. A total of 20 marine actinomycetes isolates from sediment, seawater, and sponges were bioprospected, and one isolate was selected with high pectinase activity (BLH 1.20), which was then used to characterize pH, temperature, hydrolysis analysis on pectin polymers, and isolate identification using 16s rRNA analysis. The selected isolate (BLH 1.20) performed best in a sodium phosphate buffer with a pH of 6.0 and a temperature of 30°C, achieving an activity of 5.4 U/mL. The 16S rRNA analysis revealed that the isolate is from the genus Streptomyces and the species Streptomyces sampsonii. Keywords: bioprospecting, marine Actinomycetes, pectinase, Streptomyces sampsonii
Polyaromatic Hydrocarbon Degradation and Dioxygenase Gene Detection from Alteromonas alvinellae Bt05 Thontowi, Ahmad; Rahmani, Nanik; Yopi, Yopi
Annales Bogorienses Vol. 17 No. 1 (2013): Annales Bogorienses
Publisher : BRIN

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Abstract

Bto5 is marine bacterium
Production of Maltooligosaccharides From Hutan Jati Variety Cultivar Tacca (Tacca leontopetaloides) Starch Yopi, Yopi; Rahmani, Nanik; Putri, Feby Heryani; Martin, Andri Fadillah
BIOTROPIA Vol. 26 No. 2 (2019): BIOTROPIA Vol. 26 No. 2 August 2019
Publisher : SEAMEO BIOTROP

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (224.311 KB) | DOI: 10.11598/btb.2019.26.2.890

Abstract

This research aimed to extract and characterize the physicochemical properties of starch from Tacca tuber, to determine the optimum conditions for enzymatic hydrolysis to produce maltooligosaccharides, and to analyze the character of these maltooligosaccharides. The analysis was conducted by calculating the amount of reducing sugar, total sugar, and the degree of polymerization, and by using the TLC (Thin Layer Chromatography) and HPLC (High-Performance Liquid Chromatography) analyses. The Hutan Jati variety cultivar of Tacca was selected from three Tacca variety cultivars (Hutan Jati, Pulau Katang, and Gunung Batur) to produce maltooligosaccharides by enzymatic hydrolysis of crude Bacillus sp. α-amylase. The optimum conditions for the enzymatic hydrolysis of Hutan Jati variety cultivar Tacca starch for the production of maltooligosaccharides were obtained at a substrate concentration of 3% (w/v) and a ratio of enzyme and substrate at 6 hours incubation time. From 250 mL of fresh hydrolysate, 34.49 grams of powdered maltooligosaccharide were produced. The TLC and HPLC results showed a similar yield of both the liquid and powdered maltooligosaccharides with maltose, maltotriose, and maltotetraose as the main products. Considering its physicochemical characteristics and the product of its maltooligosaccharides, the starch from the tuber of Hutan Jati variety cultivar Tacca possessed strong potential for the future production of maltooligosaccharides, particularly maltotriose and maltotetraose, in food industries.
Co-Authors - Yopi -, Yopi - ADE ANDRIANI Afriansyah, M. Ardi Ahmad Thontowi Anggraini, Yufi Sara Anja Meryandini Ashadi Sasongko Atikana, Akhirta Dewi, Fitria Endang Saepudin, Endang Ethica, Stalis N. Martin, Andri Fadillah Mulyorini Rahayuningsih Nadhifah, Hana Neneng Hasanah Nuryati Nuryati Palupi, Nurheni Sri PUSPITA LISDIYANTI Putri, Feby Heryani Rahmasari, Dianti Rahmasari, Dianti Rohmattusolihat Rohmattusolihat, Rohmattusolihat Ruth Melliawati Sari, Yana Nurita Sari, Yana Nurita SHANTI RATNAKOMALA Sri Darmawati Sri Hartati Sri Pujiyanto Trianes, Juwy Wijanarka Wijanarka YOPI YOPI Yopi, Zilda, Dewi S.