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All Journal HAYATI Journal of Biosciences JURNAL BIOLOGI INDONESIA Marine Research in Indonesia
Maggy T. Suhartono
Departemen Ilmu dan Teknologi Pangan, Fakultas Teknologi Pertanian, Institut Pertanian Bogor, Bogor
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Earth & Planetary Sciences

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Partial Purification and Characterization of Chitin Deacetylase Produced by Bacillus thermoleovorans LW-4-11 Toharisman, Aris; Suhartono, Maggy T.
JURNAL BIOLOGI INDONESIA Vol 4, No 4 (2007): JURNAL BIOLOGI INDONESIA
Publisher : Perhimpunan Biologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/jbi.v4i4.3249

Abstract

ABSTRACTPurifikasi Parsial dan Karakterisasi Enzim Kitin Deasetilase yang Dihasilkan Bacillus thermoleovorans LW-4-11. Kitin deasetilase yang dihasilkan dari bakteri Bacillus thermoleovorans LW-4-11 telah dimurnikan menggunakan amonium sulfat 70% diikuti dengan perlakuan panas (suhu 70°C selama 1 jam). Kemurnian enzim yangdipisahkan dari medium fermentasi meningkat 4.28 kali dengan aktivitas spesifik sekitar 43.7 mUImg. Enzim memiliki suhu dan pH optimum masing-masing 80°C dan 6.0 dalam substrat 0-hydroxyethylated chitin (glycol chitin). Kitindeasetilase ini relatif tahan panas dengan waktu-paruh sekitar 30 menit pada suhu 80 "C. Enzim dihambat oleh ion Li, ZnZ+, MnZ+, Co2 and Ni pada konsentrasi 1 mM, tetapi diaktifkan oleh EDTA 1 mM.Kata kunci: purifikasi parsial, karakterisasi, kitin deasetilase, B. thermoleovorans LW-4-11
EFFECT OF POVIDONE IODINE TREATMENT ON BACTERIAL COMMUNITY ASSOCIATED WITH WHITE SHRIMP (LITOPENAEUS VANNAMEI) LARVAE Pangastuti, Artini; Suwanto, Antonius; Lestari, Yulin; Suhartono, Maggy T.
Marine Research in Indonesia Vol 34, No 2 (2009)
Publisher : Research Center for Oceanography - Indonesian Institute of Sciences (LIPI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/mri.v34i2.471

Abstract

The efficacy of povidone iodine as a surface disinfectant was assessed in white shrimp (Litopenaeus vannamei) eggs and larvae. Eggs and nauplii were exposed to povidone iodine 20 ppm for 20 seconds. Culture-based method and Terminal Restriction Fragment Length Polymorphism (T-RFLP) were used to monitor the total number of bacteria and diversity of the bacterial community associated with shrimp eggs and larva at each developmental stage. Povidone iodine reduced the total culturable bacteria, especially Vibrio, on eggs and nauplii, as well as the total bacteria in the whole community as estimated by T-RFLP results. Povidone iodine also reduced the diversity of bacterial community and altered the evenness of phylotypes distribution suggesting that the use of povidone iodine as a surface disinfectant in shrimp aquaculture should be reconsidered.
EFFECT OF POVIDONE IODINE TREATMENT ON BACTERIAL COMMUNITY ASSOCIATED WITH WHITE SHRIMP (LITOPENAEUS VANNAMEI) LARVAE Pangastuti, Artini; Suwanto, Antonius; Lestari, Yulin; Suhartono, Maggy T.
Marine Research in Indonesia Vol 34 No 2 (2009)
Publisher : Research Center for Oceanography - Indonesian Institute of Sciences (LIPI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/mri.v34i2.471

Abstract

The efficacy of povidone iodine as a surface disinfectant was assessed in white shrimp (Litopenaeus vannamei) eggs and larvae. Eggs and nauplii were exposed to povidone iodine 20 ppm for 20 seconds. Culture-based method and Terminal Restriction Fragment Length Polymorphism (T-RFLP) were used to monitor the total number of bacteria and diversity of the bacterial community associated with shrimp eggs and larva at each developmental stage. Povidone iodine reduced the total culturable bacteria, especially Vibrio, on eggs and nauplii, as well as the total bacteria in the whole community as estimated by T-RFLP results. Povidone iodine also reduced the diversity of bacterial community and altered the evenness of phylotypes distribution suggesting that the use of povidone iodine as a surface disinfectant in shrimp aquaculture should be reconsidered.
PARTIAL PURIFICATION AND CHARACTERIZATION OF CHITIN DEACETYLASE PRODUCED BY BACILLUS THERMOLEOVORANS LW-4-11 Toharisman, Aris; Suhartono, Maggy T.
JURNAL BIOLOGI INDONESIA Vol 4, No 4 (2007): JURNAL BIOLOGI INDONESIA
Publisher : Perhimpunan Biologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/jbi.v4i4.3249

Abstract

ABSTRACTPurifikasi Parsial dan Karakterisasi Enzim Kitin Deasetilase yang Dihasilkan Bacillus thermoleovorans LW-4-11. Kitin deasetilase yang dihasilkan dari bakteri Bacillus thermoleovorans LW-4-11 telah dimurnikan menggunakan amonium sulfat 70% diikuti dengan perlakuan panas (suhu 70°C selama 1 jam). Kemurnian enzim yangdipisahkan dari medium fermentasi meningkat 4.28 kali dengan aktivitas spesifik sekitar 43.7 mUImg. Enzim memiliki suhu dan pH optimum masing-masing 80°C dan 6.0 dalam substrat 0-hydroxyethylated chitin (glycol chitin). Kitindeasetilase ini relatif tahan panas dengan waktu-paruh sekitar 30 menit pada suhu 80 "C. Enzim dihambat oleh ion Li', ZnZ+, MnZ+, Co2' and Ni' pada konsentrasi 1 mM, tetapi diaktifkan oleh EDTA 1 mM.Kata kunci: purifikasi parsial, karakterisasi, kitin deasetilase, B. thermoleovorans LW-4-11
Peptides Hydrolysate Derived from Collagen of Snakehead Murrel (Channa striata) Skin Demonstrate Anti-cholesterol and Anti-oxidant activities Sinaga, Wenny Silvia L. Br.; Ismaya, Wangsa T.; Retroningrum, Debbie S.; Tjandrawinata, Raymond R.; Suhartono, Maggy T.
HAYATI Journal of Biosciences Vol. 27 No. 2 (2020): April 2020
Publisher : Bogor Agricultural University, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (291.388 KB) | DOI: 10.4308/hjb.27.2.136

Abstract

Anti-cholesterol and anti-oxidant play a crucial role to combat cardiovascular disease (CVD), due to formation of arterial plagues from oxidation of cholesterol. In the past decades, bioactive peptides demonstrating anti-cholesterol and anti-oxidant activities have emerged as the alternative drugs. In this study, acid soluble collagen was extracted from the skin of snakehead murrel and employed to induce secretion of collagenase by Bacillus licheniformis F11.4. The collagenases secreted were in turn used to produce peptides hydrolysate and were grouped in two distinct collagenase fractions, designated as fraction D and F. Peptides hydrolysate produced by the fraction D was found to demonstrate HMG-CoA inhibitor activity comparable to pravastatin and limited anti-oxidant activity. Meanwhile, peptides hydrolysate generated using the fraction F demonstrated anti-oxidant activity comparable to BHT (2mM), vitamin C (2mM), and vitamin E (2mM), but limited HMG-CoA activity. Combination of the fraction D and F resulted in substantial HMG-CoA inhibition and anti-oxidant activities.
Co-Authors Antonius Suwanto dan Meity S. Sinaga . Budi Tjahjono Andi Khaeruni R ARTINI PANGASTUTI Ismaya, Wangsa T. Raymond R. Tjandrawinata Retroningrum, Debbie S. Sinaga, Wenny S.L. Toharisman, Aris Toharisman, Aris YULIN LESTARI