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Tanah Gambut Melalui Uji Triaksial Consolidated Undrained dan Unconsolidated Undrained Rahayu, Wiwik; Lisdiyanti, Puspita; Pratama, Rendy Eka
Jurnal Teknik Sipil Vol 22, No 3 (2015)
Publisher : Institut Teknologi Bandung

Abstrak. Semakin berkembangnya zaman, membuat pembangunan infrastruktur harus dapat dilakukan di berbagai tempat, begitu juga pada tanah gambut. Akan tetapi, tanah gambut merupakan salah satu jenis tanah yang memiliki kekuatan yang buruk dan kurang baik sebagai dasar konstruksi sipil. Oleh karena itu, diperlukan sebuah usaha untuk stabilisasi atau meningkatkan daya dukung tanah gambut, yaitu pada penelitian ini akan dilakukan dengan penambahan mikroorganisme selulolitik pada tanah gambut. Tujuannya adalah untuk menguraikan atau mendekomposisi senyawa organik berupa serat dan selulosa menjadi senyawa anorganik yang lebih sederhana dan padat. Mikroorganisme yang digunakan adalah jenis bakteri, jamur, dan aktinomiset. Volume mikroorganisme yang ditambahkan adalah sebesar 10% dari volume tanah dalam wadah per tahap dari total 2 tahap injeksi dan masa fermentasi selama 65 hari. Pengujian kekuatan tanah yang dilakukan adalah uji triaksial Consolidated Undrained (CU) dan Unconsolidated Undrained (UU). Setelah dilakukan injeksi mikroorganisme dan fermentasi, didapatkan hasil peningkatan parameter kuat geser tanah gambut yaitu, nilai kohesi dan sudut geser. Abstract. As the time goes by, developing of infrastructure must be able to do in various places, even on the peat soil area. However, peat soil is a type of soil that have a poor strength and not good enough to use as base of civil construction. According to that condition, it takes an effort to stabilize or increase the bearing capacity of peat soil, in this study will be use the addition of cellulolytic microorganisms in peat soil. That aims to decompose the fiber and cellulose into solid and simpler organic compounds. The kind of microorganism is bacteria, fungi, andÂ actinomycetes. Volume of microorganisms that are added is equal to 10% of the total volume of soil in the container per stage of total 2 stages and with fermentation period for 65 days. The soil strength test which is conducted in this experiment is Consolidated Undrained (CU) and Unconsolidated Undrained (UU) triaxial tests. After the injection of microorganisms and 65 days fermentation, the result showed an increasing in shear strength of peat soil parameters, the value of cohesion and friction angle.

AKTIVITAS ANTIBAKTERI AKTINOMISETES LAUT DARI PULAU ENGGANO [Antibacterial activity of marine actinomycetes from Enggano Island] Ratnakomala, Shanti; Apriliana, Pamella; Fahrurrozi, Fahrurrozi; Lisdiyanti, Puspita; Kusharyoto, Wien
BERITA BIOLOGI Vol 15, No 3 (2016)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Marine actinomycetes were isolated from mangrove sediment from the coast in Enggano, Bengkulu Province, Indonesia using the medium NBRC No. 802 modified by the addition of 2% NaCl. A total of 29 isolates of actinomycetes were isolated from three mangrove sediment samples and evaluated their potential to produce bioactive metabolites. Screening of 29 isolates marine actinomycetes isolates were performed against three bacterial pathogens had been done. Bacteria test used was Escherichia coli NBRC 14 237, Staphylococcus aureus NBRC13 276, and Bacillus subtilis NBRC 3134. Screening result showed that seven isolates have inhibitory effects against bacteria test and 22 other isolates have no inhibition. Of the seven isolates, one isolate has inhibitory effect against the growth of Gram-negative bacteria Escherichia coli, while six other isolates inhibit Gram-positive bacteria Bacillus subtilis and Staphilococcus aureus. It was concluded that, of the 29 isolates conducted in the experiment, seven isolates produce antibacterial compounds on agar medium. Molecular identification of 23 isolates were identified based on Â the gene 16S RNA sequences showed that 22 isolates belong to the genus Streptomyces and one strain belongs to the genus Dermacoccus.

Diversity of Culturable Actinomycetes from Deepsea Floor of Makassar Strait, Indonesia Hatmanti, Ariani; Lisdiyanti, Puspita; Widada, Jaka; Wahyuono, Subagus
Oseanologi dan Limnologi di Indonesia Vol 3, No 2 (2018)
Publisher : Oseanologi dan Limnologi di Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/oldi.v3i2.205

With regard to collaboration research called Widya Nusantara Exploration (EWIN) in May-June 2013 and November 2014, a study on isolation of actinomycetes from sediments of Makassar Strait have been conducted. Actinomycetes is one of microbe which has an excellent track record in producing antimikrob and other active substances. But due to terrestrial actinomycetes has been widely explored, then recently researchers began focusing on wide variety of extreme environments, such as marine environment, to screening aktinomisetes in producing new secondary metabolites. A total of 36 strains of actinomycetes were isolated from 10 samples obtained from deepsea floor in Makassar Strait, Indonesia, Direct Dillution Method were best used to isolate the actinomycetes compare to Sodium Dodecyl Sulfida â Yeast Extract Method (SDS-YE Method) and Rehidration Centrifugation Method (RC Method). NBRC-802 media and Actinomycetes Isolation Agar(AIA)(Himedia)media were used as the isolation media. All the isolates were identified by morphological characteristic and by analysis of 16S rRNA gene sequence. Actinomycetes isolated from deepsea floor of Makassar Strait have been dominated by Micromonospora (58%), Verrucosispora (14%)Streptomyces (8%) and Luteipulveratus (5%), however genus Nocardiopsis, Micrococcus, Gordonia, Kytococcus, and Arthrobacter were not dominant (3%). Station 25 in 1.547 m depth was the most abundant of actinomycetes, 18 strains and dominated by the genus Micromonospora which is isolated using Direct Dillution Method and both NBRC 802 or AIA media.

BIODEGRADATION OF POLYCYCLIC AROMATIC HYDROCARBON (PAH), PHENANTHRENE BY MARINE BACTERIUM THALASSOSPIRA SP. C.260 Murniasih, Tutik; Lisdiyanti, Puspita; Yopi, -
Marine Research in Indonesia Vol 35, No 1 (2010)
Publisher : Research Center for Oceanography - Indonesian Institute of Sciences (LIPI)

Phenanthrene is a polycyclic aromatic hydrocarbon (PAH) compound that is known to be reported toxic to marine flora and fauna. Remediation of this environmental pollutant using chemical and physical methods causes environmental issues. Bioremediation using marine has been applied to degrade such various PAH compounds. Screening of marine microorganism in degrading this recalcitrant is very importance for bioremediation application in Indonesian waters. The purpose of this study was to screen and isolate bacterial with potential application in biodegradation of phenanthrene and other harmful PAH in marine environments. Several potential bacteria strains were isolated from oil contaminated sea water in Cilacap area. Sequence analysis using 16S rRNA gene marine bacterium strain C.260 showed 96% sequence homology to sequence of Thalassospira sp. In biodegradation of phenanthrene, within 28 days experiments, this bacterium degraded 50% and 99.75% of phenanthrene in medium with and without enrichment with NPK fertilizer respectively. Using sublimation method, this bacterium also degradeds phenothiazine, fluoranthene, and dibenzothiophene.

IDENTIFIKASI AKTINOMISETES SEDIMEN AIR TAWAR MAMASA, SULAWESI BARAT DAN AKTIVITASNYA SEBAGAI ANTIBAKTERI DAN PELARUT FOSFAT Putri, Ade Lia; Lisdiyanti, Puspita; Kusmiati, Mia
Jurnal Bioteknologi & Biosains Indonesia (JBBI) Vol 5, No 2 (2018): December 2018
Publisher : Badan Pengkajian dan Penerapan Teknologi (BPPT)

Identification of Actinomycetes in Freshwater Sediments from Mamasa, West Sulawesi and Their Antibacterial and Phosphate Solubilizing ActivitiesABSTRACTA large number of actinomycetes that have been isolated and screened were obtained from soil and marine samples. Consequently, the possibility of isolating novel Actinomycetes and secondary metabolites compounds strains from soil and marine samples have limited. Exploration of actinomycetes from freshwater sediment is rare. In this study, 30 isolates of Actinomycetes from freshwater sediments in Mamasa District, West Sulawesi were isolated, identified, and screened for their antibacterial and phosphate solubilizing activity. Actinomycetes were isolated by serial dilution method and were identified based on morphological and 16S rRNA gene sequence. Antibiotic activity was screened using the agar plug diffusion method, while soluble phosphate ability was observed by clear zone ratio in PKA medium. Most of the isolates belong to the genus Streptomyces (80%). Out of 30 isolates, 56.6% showed antibacterial activity and 36.6% had potential as solubilizing phosphate which belong to genus Streptomyces, Actinomadura, and Kitasatospora.Keywords: 16S rRNA, Actinomycetes, antibacterial, freshwater sediment, phosphate solubilizing ABSTRAKSebagian besar aktinomisetes yang telah diisolasi dan dilakukan penapisan metabolit sekundernya berasal dari sampel tanah dan laut. Konsekuensinya, kesempatan untuk menemukan aktinomisetes jenis baru maupun yang menghasilkan metabolit sekunder baru dari tanah dan laut semakin berkurang. Eksplorasi aktinomisetes dari lingkungan lain seperti sedimen air tawar jarang dilakukan. Pada penelitian ini, 30 isolat aktinomisetes yang diisolasi dari sedimen air tawar di Kabupaten Mamasa, Sulawesi Barat, telah diidentifikasi dan dilakukan penapisan antibakteri dan kemampuan isolat dalam melarutkan fosfat. Aktinomisetes diisolasi dengan metode pengenceran secara langsung dan selanjutnya diidentifikasi secara morfologi dan molekular berdasarkan gen 16S rRNA. Metode yang digunakan dalam penapisan aktivitas antibakteri adalah agar plug diffusion method, sedangkan kemampuan aktinomisetes dalam melarutkan fosfat diuji dengan cara menumbuhkan isolat pada media PKA. Isolat yang paling banyak diisolasi termasuk ke dalam marga Streptomyces (80%). Dari 30 isolat, 56,6% isolat menunjukkan adanya aktivitas antibakteri dan 36,6% dari isolat berpotensi sebagai pelarut fosfat, yang termasuk ke dalam marga Streptomyces, Actinomadura, dan Kitasatospora.Kata Kunci: 16S rRNA, Aktinomisetes, sedimen air tawar, antibakteri, pelarut fosfat

The Genus Chitinophaga Isolated from Wanggameti National Park and Their Lytic Activities Meliah, Siti; Kusumawati, Dinihari Indah; Lisdiyanti, Puspita
JURNAL BIOLOGI INDONESIA Vol 14, No 2 (2018): JURNAL BIOLOGI INDONESIA
Publisher : Perhimpunan Biologi Indonesia

ABSTRACTThe utilization of bacterial enzymes in commercial industry, agriculture, waste treatment and health is preferred over other sources like plants and animals sources because they provide many advantages for different applications. The genus Chitinophaga which was first described as chitinolytic Myxobacteria, known as chitin destroyer or chitin eater due to their capability to hydrolyze chitin. The present study aims to isolate, characterize, identify, and assay the indigenous bacteria from Wanggameti National Park for their lytic activity againts chitin, cellulose and protein as an initial step in bio-prospecting of Sumba Island. Eleven yellow pigmented isolates were obtained from soil and decayed wood samples using ST21 and Water Agar media. They formed halo on VY/2CX medium. Physiological charazterization showed that two isolates were able to produce catalase but none of them produced urease. The phylogenetic analysis based on 16S rRNA gene sequences indicated that all isolates belong to the genus Chitinophaga that consisting of Chitinophaga filiformis, Chitinophaga ginsengisoli, Chitinophaga pinensis, and Chitinophaga sancti. They were deposited in InaCC under the name InaCC B1254 to InaCC B1264. Qualitative analysis of their lytic activity exhibited that all strains were able to lyse chitin and cellulose. The strains with the highest chitinase and cellulase activity are InaCC B1260 and InaCC B1258 strains, respectively, both of them are C. pinensis. Hereafter, C. filiformis showed the highest proteolytic activity in skim milk casein amongs all strains at 1.14±0.08. Keywords: Chitinophaga, chitinase, cellulase, protease, Sumba

BIODEGRADATION OF POLYCYCLIC AROMATIC HYDROCARBON (PAH), PHENANTHRENE BY MARINE BACTERIUM THALASSOSPIRA SP. C.260 Murniasih, Tutik; Lisdiyanti, Puspita; Yopi, -
Marine Research in Indonesia Vol 35 No 1 (2010)
Publisher : Research Center for Oceanography - Indonesian Institute of Sciences (LIPI)

Phenanthrene is a polycyclic aromatic hydrocarbon (PAH) compound that is known to be reported toxic to marine flora and fauna. Remediation of this environmental pollutant using chemical and physical methods causes environmental issues. Bioremediation using marine has been applied to degrade such various PAH compounds. Screening of marine microorganism in degrading this recalcitrant is very importance for bioremediation application in Indonesian waters. The purpose of this study was to screen and isolate bacterial with potential application in biodegradation of phenanthrene and other harmful PAH in marine environments. Several potential bacteria strains were isolated from oil contaminated sea water in Cilacap area. Sequence analysis using 16S rRNA gene marine bacterium strain C.260 showed 96% sequence homology to sequence of Thalassospira sp. In biodegradation of phenanthrene, within 28 days experiments, this bacterium degraded 50% and 99.75% of phenanthrene in medium with and without enrichment with NPK fertilizer respectively. Using sublimation method, this bacterium also degradeds phenothiazine, fluoranthene, and dibenzothiophene.

THE GENUS CHITINOPHAGA ISOLATED FROM WANGGAMETI NATIONAL PARK AND THEIR LYTIC ACTIVITIES Meliah, Siti; Kusumawati, Dinihari Indah; Lisdiyanti, Puspita
JURNAL BIOLOGI INDONESIA Vol 14, No 2 (2018): JURNAL BIOLOGI INDONESIA
Publisher : Perhimpunan Biologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/jbi.v14i2.3734

ABSTRACTThe utilization of bacterial enzymes in commercial industry, agriculture, waste treatment and health is preferred over other sources like plants and animals sources because they provide many advantages for different applications. The genus Chitinophaga which was first described as chitinolytic Myxobacteria, known as chitin destroyer or chitin eater due to their capability to hydrolyze chitin. The present study aims to isolate, characterize, identify, and assay the indigenous bacteria from Wanggameti National Park for their lytic activity againts chitin, cellulose and protein as an initial step in bio-prospecting of Sumba Island. Eleven yellow pigmented isolates were obtained from soil and decayed wood samples using ST21 and Water Agar media. They formed halo on VY/2CX medium. Physiological charazterization showed that two isolates were able to produce catalase but none of them produced urease. The phylogenetic analysis based on 16S rRNA gene sequences indicated that all isolates belong to the genus Chitinophaga that consisting of Chitinophaga filiformis, Chitinophaga ginsengisoli, Chitinophaga pinensis, and Chitinophaga sancti. They were deposited in InaCC under the name InaCC B1254 to InaCC B1264. Qualitative analysis of their lytic activity exhibited that all strains were able to lyse chitin and cellulose. The strains with the highest chitinase and cellulase activity are InaCC B1260 and InaCC B1258 strains, respectively, both of them are C. pinensis. Hereafter, C. filiformis showed the highest proteolytic activity in skim milk casein amongs all strains at 1.14±0.08. Keywords: Chitinophaga, chitinase, cellulase, protease, Sumba

IDENTIFIKASI AKTINOMISETES SEDIMEN AIR TAWAR MAMASA, SULAWESI BARAT DAN AKTIVITASNYA SEBAGAI ANTIBAKTERI DAN PELARUT FOSFAT Putri, Ade Lia; Lisdiyanti, Puspita; Kusmiati, Mia
Jurnal Bioteknologi & Biosains Indonesia (JBBI) Vol. 5 No. 2 (2018): December 2018
Publisher : Balai Bioteknologi, Badan Pengkajian dan Penerapan Teknologi (BPPT)

Identification of Actinomycetes in Freshwater Sediments from Mamasa, West Sulawesi and Their Antibacterial and Phosphate Solubilizing ActivitiesABSTRACTA large number of actinomycetes that have been isolated and screened were obtained from soil and marine samples. Consequently, the possibility of isolating novel Actinomycetes and secondary metabolites compounds strains from soil and marine samples have limited. Exploration of actinomycetes from freshwater sediment is rare. In this study, 30 isolates of Actinomycetes from freshwater sediments in Mamasa District, West Sulawesi were isolated, identified, and screened for their antibacterial and phosphate solubilizing activity. Actinomycetes were isolated by serial dilution method and were identified based on morphological and 16S rRNA gene sequence. Antibiotic activity was screened using the agar plug diffusion method, while soluble phosphate ability was observed by clear zone ratio in PKA medium. Most of the isolates belong to the genus Streptomyces (80%). Out of 30 isolates, 56.6% showed antibacterial activity and 36.6% had potential as solubilizing phosphate which belong to genus Streptomyces, Actinomadura, and Kitasatospora.Keywords: 16S rRNA, Actinomycetes, antibacterial, freshwater sediment, phosphate solubilizingÃ‚Â ABSTRAKSebagian besar aktinomisetes yang telah diisolasi dan dilakukan penapisan metabolit sekundernya berasal dari sampel tanah dan laut. Konsekuensinya, kesempatan untuk menemukan aktinomisetes jenis baru maupun yang menghasilkan metabolit sekunder baru dari tanah dan laut semakin berkurang. Eksplorasi aktinomisetes dari lingkungan lain seperti sedimen air tawar jarang dilakukan. Pada penelitian ini, 30 isolat aktinomisetes yang diisolasi dari sedimen air tawar di Kabupaten Mamasa, Sulawesi Barat, telah diidentifikasi dan dilakukan penapisan antibakteri dan kemampuan isolat dalam melarutkan fosfat. Aktinomisetes diisolasi dengan metode pengenceran secara langsung dan selanjutnya diidentifikasi secara morfologi dan molekular berdasarkan gen 16S rRNA. Metode yang digunakan dalam penapisan aktivitas antibakteri adalah agar plug diffusion method, sedangkan kemampuan aktinomisetes dalam melarutkan fosfat diuji dengan cara menumbuhkan isolat pada media PKA. Isolat yang paling banyak diisolasi termasuk ke dalam marga Streptomyces (80%). Dari 30 isolat, 56,6% isolat menunjukkan adanya aktivitas antibakteri dan 36,6% dari isolat berpotensi sebagai pelarut fosfat, yang termasuk ke dalam marga Streptomyces, Actinomadura, dan Kitasatospora.Kata Kunci: 16S rRNA, Aktinomisetes, sedimen air tawar, antibakteri, pelarut fosfat

Isolasi dan Karakterisasi Bakteri Endofit dari Tanaman Binahong dan Katepeng China Desriani Desriani; Ukhradia Maharaniq Safira; Maria Bintang; Akhmad Rivai; Puspita Lisdiyanti
Jurnal Kesehatan Andalas Vol 3, No 2 (2014)
Publisher : Fakultas Kedokteran, Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jka.v3i2.33

AbstrakBakteri endofit merupakan mikroorganisme menguntungkan yang berinteraksi dengan tanaman inang tanpa menyebabkan gangguan atau kerusakan pada tanaman.Beberapa studi menunjukkan bahwa bakteri endofit tertentu dapat memproduksi senyawa kimia yang memiliki efek bagi kesehatan, terutama bakteri endofit yang diisolasi dari tanaman obat.Binahong (Anredera cordifolia) dan Ketepeng Cina (Cassia alata) merupakan tanaman obat yang telah diketahui memiliki beberapa khasiat.Tujuan dari penelitian ini ialah mengisolasi dan mengkarakterisasi bakteri endofit dari kedua tanaman tersebut melalui uji antibakteriterhadap tiga jenis bakteri patogen manusia (Pseudomonas aeruginosa, Staphylococcus aureus, dan Bacillus cereus). Metode: Jumlah bakteri endofit yang berhasil diisolasi dari dua tanaman tersebut berjumlah 73 isolat (37 isolat dari Binahong dan 36 isolat dari Ketepeng Cina). Hasil: Berdasarkan uji antibakteri terhadap tiga bakteri patogen diperoleh 16 isolat bakteri endofit yang memiliki aktivitas potensial (ditandai dengan terbentuknya zona hambat), yaitu 1 isolat dari Ketepeng Cina (terhadap Pseudomonas aeruginosa) dan 15 isolat dari Binahong. Pembahasan: Terbentuknya zona hambat mengindikasikan kemungkinan adanya senyawa kimia yang memiliki efek antibakteri.Kata kunci: bakteri endofit, Anredera cordifolia, Cassia alata, antibakteri.AbstractEndophytic bacteria is a beneficial microorganism that interacts with plant without causing any harm to the host. Most studies showed that certain endophytic bacteria can produce chemical compound which have medical effect, especially endophytic bacteria isolated from medicinal plant. Binahong (Anrederacordifolia) and KetepengCina (Cassia alata) are several of medicinal plants potential to be used for medical purpose. Methods: The objective of this study was to isolate and to characterize endophytic bacteria from both plants through antibacterial activity test against to three kinds of human pathogenic bacteria (Pseudomonas aeruginosa, Staphylococcus aureus, and Bacillus cereus). Results: total isolated endophytic bacteria from both plants are 73 isolates (37 isolates from Binahong and 36 isolates from KetepengCina). There were 16 isolates have potential activity (indicated by clear zone), one isolate from KetepengCina and 15 isolates from Binahong. Discussion: The formed clear zone indicates antibacterial compounds produced by endophyticbacteriatested. Further research is needed to identify the type of antibacterial compounds produced.Keywords:endophytic bacteria, Anrederacordifolia, Cassia alata, antibacterial.

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