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All Journal Biota: Jurnal Ilmiah Ilmu-Ilmu Hayati Journal of Engineering and Technological Sciences OLDI (Oseanologi dan Limnologi di Indonesia) Marine Research in Indonesia

MUJIZAT KAWAROE

Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, Bogor Agricultural University, Darmaga Campus, Bogor 16680,

Author-ID : 297137

Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Earth & Planetary Sciences Engineering Environmental Science

Published : 8 Documents Claim Missing Document

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Articles

Optimum Fermentation Process for Red Macroalgae Gelidium latifolium and Gracillaria verrucosa Kawaroe, Mujizat; Sari, Dahlia Wulan; Hwangbo, Junkwon; Santoso, Joko
Journal of Engineering and Technological Sciences Vol 47, No 6 (2015)
Publisher : ITB Journal Publisher, LPPM ITB

Red macroalgae have the potential to be processed into bioethanol due to their high carbohydrate and low lignin content. Gelidium latifolium and Gracilaria verrucosa are red macroalgae commonly found in Indonesian seas. Sometimes an over-supply of red macroalgae is rejected by the food industry, which opens up opportunities for others uses, e.g. for producing bioethanol. The objectives of this research were to analyze the influence of sulfuric acid concentration on hydrolysis of G. latifolium and G. verrucosa and to calculate the optimum fermentation process to produce bioethanol. G. latifolium and G. verrucosa were hydrolyzed using H2SO4 at concentrations of 1%, 2%, 3%, and 4%, at a temperature of 121Â Â°C and a pressure of 1.5 bar for 45 minutes. The process of fermentation was done using Saccharomyces cerevisiae in anaerobic conditions for 4, 5, 6 and 7 days. The results show that the optimum H2SO4 concentrations to hydrolyze G. latifolium and G. verrucosa were 1% and 2% respectively. The number of S. cerevisiae cells in hydrolysate G. latifolium and G. verrucosa increased in the third adaptation. S. cerevisiae can convert sugar from G. latifolium and G. verrucosa into bioethanol through fermentation. The highest bioethanol yields were achieved on days five and six. Therefore, red macroalgae can be seen as a potential raw material for bioethanol production.

BIODEGRADASI ANAEROBIK MAKROALGA Ulva sp. UNTUK MENGHASILKAN BIOGAS DENGAN METODE BATCH Krisye, Krisye; Kawaroe, Mujizat; Hasanudin, Udin
Oseanologi dan Limnologi di Indonesia Vol 1, No 1 (2016)
Publisher : Oseanologi dan Limnologi di Indonesia

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Kandungan karbohidrat yang tinggi dan lignin yang rendah dari makroalga Ulva sp. merupakan keunggulannya sebagai substrat untuk memproduksi biogas. Biogas dapat dihasilkan melalui proses biodegradasi anaerobik menggunakan metode batch. Penelitian ini bertujuan untuk mengetahui potensi biogas dan gas metana (CH4) yang dihasilkan Ulva sp. dalam sistem batch. Penelitian dilaksanakan dari bulan Desember 2013 sampai Juli 2014 di Laboratorium Pusat Penelitian Surfaktan dan Bioenergi Institut Pertanian Bogor, Laboratorium Pengujian Departemen Teknologi Industri Pertanian IPB dan Laboratorium Pengelolaan Limbah Agroindustri Universitas Lampung. Penelitian ini diawali dengan analisis proksimat, kemudian pembuatan starter dari kotoran sapi, dilanjutkan dengan aklimatisasi dan proses biodegradasi anaerobik yang menggunakan metode batch. Hasil dianalisis menggunakan program statistik SPSS 17. Hasil analisis proksimat menunjukkan bahwa Ulva sp. memiliki kadar air 16,7%, kadar abu 14,9%, lemak 2,9%, karbohidrat 60,3%, protein 5,3%, lignin 4,6%, Total Organic Carbon (TOC) 26,1%, dan Nitrogen 1,3% serta rasio C/N 20,5. Setelah proses aklimatisasi, biogas yang dihasilkan dari 8,8 L biomassa Ulva sp. sebesar 70,9 L dengan rentang pH 6,3â7,1 sedangkan pada proses biodegradasi anaerobik metode batch dari 4 kg Ulva sp. dihasilkan biogas sebesar 153,9 L dengan kandungan metana 51,1 L. Berdasarkan hasil penelitian ini diketahui bahwa setiap kg Ulva sp. berpotensi menghasilkan biogas sebesar 38,5 L dengan kandungan metana 12,8 L. Hubungan antara COD dan volume gas metana yang terakumulasi yaitu -0,971.

TRANSPLANTING ENHALUS ACOROIDES (L.F) ROYLE WITH DIFFERENT LENGTH RHIZOME ON THE MUDDY SUBSTRATE AND HIGH WATER DYNAMIC AT BANTEN BAY, INDONESIA Kiswara, Wawan; Kumoro, Erlangga Dwi; Kawaroe, Mujizat; Rahadian, Nana P.
Marine Research in Indonesia Vol 35, No 2 (2010)
Publisher : Research Center for Oceanography - Indonesian Institute of Sciences (LIPI)

This study is a part of transplanting Enhalus acoroides carried out from November 2006 to February 2007 as a compensation of 1.6 ha loss of seagrass beds at Bojonegara, which was facilitated by NGO Rekonvasi Bhumi and funded by oil drilling company, PT Apexindo. The transplanting site was located at Terate, Banten Bay which has muddy substrate with high water dynamic. Healthy transplant seedlings were collected from monospecific vegetation with muddy substrate of donor site at Kepuh. The seedlings of Enhalus have different length of rhizome, 5 and 10 cm, with leaf length of 60 cm and removed roots. Transplanting of Enhalus acoroides was conducted using single shoot seedlings with 9 seedlings per unit in 1 meter square with 5 replicates. Light coefficient (1.17-5.06) and percentage of silt and clay (86.45 Â± 2.18 %) at transplant site Terate were both higher than the donor site Kepuh with light coefficient values of 1.21-2.46 and percentage of silt and clay 64.00 Â± 5.57 %, respectively. Seedling growth survival of Enhalus acoroides in February 2007 with rhizome length of 10 cm was higher (51.11 Â± 25.58%) than seedlings with rhizome length of 5 cm (17.78 Â± 18.59%). Leaf length and wide Enhalus acoroides transplants decreased during the study. Water dynamic (waves) influenced light coefficient and turbidity at the transplant site. Field observations showed that mortality of Enhalus acoroides transplants was caused by mud smoothering the leaves and barnacle growing on them. They made the leaves lost their buoyancy, laid on the surface, rotten and finally died. Wave is one of the important physical factor affecting the transplanting seagrass on the muddy substrate.

TRANSPLANTING ENHALUS ACOROIDES (L.F) ROYLE WITH DIFFERENT LENGTH RHIZOME ON THE MUDDY SUBSTRATE AND HIGH WATER DYNAMIC AT BANTEN BAY, INDONESIA Kiswara, Wawan; Kumoro, Erlangga Dwi; Kawaroe, Mujizat; Rahadian, Nana P.
Marine Research in Indonesia Vol 35 No 2 (2010)
Publisher : Research Center for Oceanography - Indonesian Institute of Sciences (LIPI)

This study is a part of transplanting Enhalus acoroides carried out from November 2006 to February 2007 as a compensation of 1.6 ha loss of seagrass beds at Bojonegara, which was facilitated by NGO Rekonvasi Bhumi and funded by oil drilling company, PT Apexindo. The transplanting site was located at Terate, Banten Bay which has muddy substrate with high water dynamic. Healthy transplant seedlings were collected from monospecific vegetation with muddy substrate of donor site at Kepuh. The seedlings of Enhalus have different length of rhizome, 5 and 10 cm, with leaf length of 60 cm and removed roots. Transplanting of Enhalus acoroides was conducted using single shoot seedlings with 9 seedlings per unit in 1 meter square with 5 replicates. Light coefficient (1.17-5.06) and percentage of silt and clay (86.45 ± 2.18 %) at transplant site Terate were both higher than the donor site Kepuh with light coefficient values of 1.21-2.46 and percentage of silt and clay 64.00 ± 5.57 %, respectively. Seedling growth survival of Enhalus acoroides in February 2007 with rhizome length of 10 cm was higher (51.11 ± 25.58%) than seedlings with rhizome length of 5 cm (17.78 ± 18.59%). Leaf length and wide Enhalus acoroides transplants decreased during the study. Water dynamic (waves) influenced light coefficient and turbidity at the transplant site. Field observations showed that mortality of Enhalus acoroides transplants was caused by mud smoothering the leaves and barnacle growing on them. They made the leaves lost their buoyancy, laid on the surface, rotten and finally died. Wave is one of the important physical factor affecting the transplanting seagrass on the muddy substrate.

Kultivasi Scenedesmus sp. Pada Medium Air Limbah Kawaroe, Mujizat
Biota : Jurnal Ilmiah Ilmu-Ilmu Hayati Vol 16, No 2 (2011): June 2011
Publisher : Universitas Atma Jaya Yogyakarta

Proses fotosintesis pada mikroalga membutuhkan CO2 dan cahaya matahari serta nutrien untuk pertumbuhannya. Kultivasi Scenedesmus sp. pada medium air limbah bertujuan guna mencukupi kebutuhan mikroalga akan nutrien dan mengurangi masukan dari bahan kimia yang terkandung dalam air limbah tersebut ke lingkungan. Kultivasi Scenedesmus sp. dilakukan selama tujuh hari pada medium air limbah industri tanpa penambahan nutrien. Hasil kepadatan tertinggi pada akhir kultivasi diperoleh pada medium air effluent senilai 8,033,333 sel/ml dengan berat kering 4,60 gr. Kultivasi mikroalga tersebut juga dapat menurunkan nilai dari Total Padatan Tersuspensi dan Terlarut serta penurunan kadar dari BOD, COD, Nitrit, Sulfit, Sulfat, besi, Krom, Tembaga, dan Seng. Kultivasi Scenedesmus sp. dapat dilakukan pada medium air limbah tanpa perlu penambahan nutrien.

Aktivitas Antibakteri Ekstrak Karang Lunak Sarcophyton sp. yang Difragmentasi dan Tidak Difragmentasi dari Perairan Pulau Pramuka, Kepulauan Seribu, Jakarta Kawaroe, Mujizat; Soedarma, Dedi; Effendi, Hefni; Nurhayati, Tati; Hardiningtyas, Safrina Dyah
Biota : Jurnal Ilmiah Ilmu-Ilmu Hayati Vol 15, No 3 (2010): October 2010
Publisher : Universitas Atma Jaya Yogyakarta

Fragmented and non-fragmented soft corals showed antibacterial activities. Soft corals were gradually extracted using methanol, ethyl acetate, and hexane. Crude extract of the samples was tested its antibacterial activity, Minimun Inhibitory Concentration, toxicity (Brine Shrimp Lethality Test method), and phytochemicals. Overall, the antibacterial activity of crude extract of non-fragmented soft coral Sarcophyton sp. was higher than the crude extract of fragmented soft coral Sarcophyton sp. Crude ethyl acetate extract showed higher antibacterial activities. The ethyl acetate crude extract of non-fragmented soft coral Sarcophyton sp. is able to inhibit all tested bacteria is E. coli, S. aureus, P. aeruginosa and B.cereus, while the ethyl acetate crude extract of fragmented Sarcophyton sp. is unable to inhibit bacteria P. aeruginosa. Minimum inhibitory concentration extracts of non-fragmented Sarcophyton sp. in range 240âˆ’480 Î¼g/disc. The 24-h LC50 extracts of fragmented and non-fragmented Sarcophyton sp. for Artemia salina were 149.50 ppm and 45.15 ppm, respectively. Bioactive compounds of fragmented and non-fragmented Sarcophyton sp. extract are steroid, flavonoid and alkaloid.

Perubahan Luas Penutupan Padang Lamun Di Kepulauan Seribu, DKI Jakarta Kawaroe, Mujizat; Jaya, Indra; S., Indarto H.; Sari, Dahlia Wulan; W., Sundari Wening
Biota : Jurnal Ilmiah Ilmu-Ilmu Hayati Vol 15, No 1 (2010): February 2010
Publisher : Universitas Atma Jaya Yogyakarta

Seagrass is one of productive and economical marine ecosystem, but recently there are indications that this area is decreasing and every kind of damage is happening. The research was conducted to reveal the change of seagrass width area and to determine the suitable location for donor and acceptor of seagrass transplantation. Methods of research were collecting and analyzing the satellite image of the research location, bathymetri mapping and water quality parameter, and also determining environment charasteristics that suitable to be performed by counting Seagrass Transplantation Suitability Index (STSI). The results show that in year 1999-2004, the derivation area of seagrass was 678.300 m2. Pari island has depth range between 0-50 metres and the physics and chemical parameter of water have a good range where the seagrass can live. According to the analysis result of STSI, suitable areas for seagrass transplantation donor is station no. 5 and 6 for seagrass species of Enhalus acoroides and station no. 2 and 7 for seagrass species Thalassia hemprichii. The implication of this research is that the seagrass needs rehabilitation to overcome seagrass ecosystem for better condition.

Periode Pemijahan Spons Aaptos aaptos (Porifera: Demospongia) di Perairan Pulau Pari, Kepulauan Seribu, DKI Jakarta Kawaroe, Mujizat; Soedharma, Dedi; Siregar, Rahmadsyah Deny
Biota : Jurnal Ilmiah Ilmu-Ilmu Hayati Vol 13, No 2 (2008): June 2008
Publisher : Universitas Atma Jaya Yogyakarta

The purpose of this research was to study spawning period of sponge Aaptos aaptosat Pari Island, Thousand Islands, DKI Jakarta. The result showed that spawningtime occurred at 17.00-18.00, and within that time the sponge closed their osculumto throw out the zygote leaving the body faster. The duration of spawning rangefrom 4 minutes to 41 minutes. Based on the lunar periode, spawning for spongeAaptos aaptos started from early new moon till few days after full moon. Spawningmostly took place during spring tides. Based on the PCA analysis, it was found thatwater temperature and pressure had strong correlation with spawning time.

Co-Authors DAHLIA WULAN SARI Dedi Soedarma DEDI SOEDHARMA Hefni Effendi Indra Jaya Joko Santoso Junkwon Hwangbo, Junkwon Kiswara, Wawan Krisye Krisye Kumoro, Erlangga Dwi Rahadian, Nana P. S., Indarto H. safrina dyah hardiningtyas Siregar, Rahmadsyah Deny TATI NURHAYATI Udin Hasanudin W., Sundari Wening

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