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Andi Setiawan
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Journal : Science and Technology Indonesia

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Activity of Mangrove-Derived Fusarium equiseti 20CB07RF Extract Against Clinical, Antibacterial-Resistant Pseudomonas aeruginosa Bahri, Syaiful; Setiawan, Wawan Abdullah; Setiawan, Fendi; Lutfiah, Rosyidatul; Juliasih, Ni Luh Gede Ratna; Ambarwati, Yuli; Ahmadi, Peni; Arai, Masayoshi; Hendri, John; Hadi, Sutopo; Setiawan, Andi
Science and Technology Indonesia Vol. 9 No. 3 (2024): July
Publisher : Research Center of Inorganic Materials and Coordination Complexes, FMIPA Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26554/sti.2024.9.3.594-604

Abstract

Endophytic fungi originating from mangroves are potential sources of secondary metabolites with varying bioactivities. This research explores the bioactive metabolites produced by endophytes derived from mangrove plants. Endophytic fungi were collected from various parts of several mangrove plants (roots, stems, and leaves, as well as the surrounding mud). A total of 17 endophytics fungi were obtained. The isolates were derived from the leaves (1 isolate), stems (8 isolates), roots (5 isolates), and surrounding mud (3 isolates). A single fungal colony was cultured using solid-state fermentation for 14 days. The fermented fungal biomass was extracted using ethyl acetate (EtOAc) and evaluated for its antibacterial activity against clinical pathogenic bacteria. In the preliminary screening, the EtOAc extract of the CB07RF1 isolate exhibited notable growth-inhibitory effects against Pseudomonas aeruginosa. The isolate was verified by molecular identification using a study of the rDNA internal transcribed spacer (ITS) sequence, revealed that isolate CB07RF1 was very similar to Fusarium equiseti (99% similarity). Isolate 20CB07RF1, obtained by solid-state fermentation using a rice medium indicated as peptide compound group, and featured active components that exhibited potent growth inhibitory activity against Pseudomonas aeruginosa at a concentration of 12.5 mg/mL. This study demonstrates, for the first time, that Fusarium equiseti extracts grown in a rice medium contain antimicrobial compounds that can inhibit the growth of P. aeruginosa, an important clinical pathogen known for its antibacterial resistance. These findings accent mangrove endophytic fungi as important sources of bioactive compounds and will advance related research in the fields of biotechnology, pharmacology, and life sciences.
New Encapsulation of Fucoxanthin Isolated from Cyclotella striata by Nano Chitosan–Pectin using Ionic Gelation Method Nahrowi, Ridho; Solehati, Siti; Widyastuti, Widyastuti; Juliasih, Ni Luh Gede Ratna; Pandiangan, Kamisah Delilawati; Setiawan, Andi; Hendri, John
Science and Technology Indonesia Vol. 9 No. 3 (2024): July
Publisher : Research Center of Inorganic Materials and Coordination Complexes, FMIPA Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26554/sti.2024.9.3.517-528

Abstract

Fucoxanthin is an anticancer, antioxidant, antimicrobial, and anti-inflammatory bioactive compound. Unfortunately, the conjugated double bonds of the fucoxanthin structure make it unstable, posing issues for product development, particularly with regard to shelf life. This research study aims to synthesize nano chitosan–pectin and encapsulate isolated fucoxanthin by nano chitosan–pectin using an ionic gelation method. Fucoxanthin was obtained through isolation of microalgae species Cyclotella striata. The best result of nanoparticle size using a particle size analyzer was chitosan:pectin 1 : 2 of 172 nm. Fourier transform infrared analysis showed that there was an interaction between chitosan–pectin and fucoxanthin, which was characterized by a shift in the C O absorption fucoxanthin from 1736 to 1632 cm-1. The result of morphological analysis of nano chitosan–pectin–fucoxanthin using a scanning electron microscopeshows a spherical morphology with a size between 140 and 265 nm. The result of encapsulation efficiency was 75.18%, whereas encapsulation stability increased fucoxanthin oxidation half-life 4.7 times longer than that of unencapsulated fucoxanthin. The nano chitosan pectin could be utilized as a matrix conjugate to increase the stability of fucoxanthin significantly by encapsulation. This information is expected to be useful in developing encapsulation applications for unstable compounds.
Novel Micrococcus unila to Produce Glucosamine by Solid-state Fermentation of Shrimp Shell Waste Setiawan, Wawan Abdullah; Setiawan, Andi; Salsabila, Nafila Khansa; Widyastuti, Widyastuti; Laila, Aspita; Juliasih, Ni Luh Gede Ratna; Irawan, Bambang; Ahmadi, Peni; Apriliana, Ety; Arai, Masayoshi; Hendri, John
Science and Technology Indonesia Vol. 9 No. 4 (2024): October
Publisher : Research Center of Inorganic Materials and Coordination Complexes, FMIPA Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26554/sti.2024.9.4.779-789

Abstract

This study aimed to assess glucosamine production through enzymatic activity, utilizing actinomycetes sourced from shrimp shell waste (SSW) in a solid-state fermentation (SSF) process. A total of 16 actinomycetes underwent chitinase activity screening, and the strain exhibiting the highest chitinolytic index was chosen for subsequent morphological and phylogenetic analyses. High Performance Liquid Chromatography (HPLC) was employed to analyze glucosamine produced from the bioconversion of SSW via SSF. Optimal conditions for glucosamine production were determined by varying time, pH, and temperature. Isolate 18D36-A2 showed the highest chitinolytic index of 1.02 in the 32-mm clean zone. Phylogenetic analysis revealed 97% similarity to the genus Micrococcus, identifying it as a novel Micrococcus unila strain 18D36-A2 and deposited in GenBank. This isolate effectively converted shrimp shells. The findings showcase the bioconversion of SSW to glucosamine through SSF using the Micrococcus unila 18D36-A2. Furthermore, this study establishes a foundation for future research on environmentally friendly and sustainable designs for glucosamine production.
Co-Authors A.S, Yandi Abdul Majid Abdullah Setiawan, Wawan Abdullah, Rizal Rahman Aezad, Muhammad Hafiq Afala, La Ode Machdani Agnesia, Ruth Aguinaldo, Aguinaldo Agung Abadi Kiswandono agustin, riska Ahmad Faqih Ahmadi, Peni Al Fawaz, Ahmad Hadiq Syifa Alfian Alfian ali, yusuf Amalia, Dita Rizki Ambarwati, Yuli Andari, An An Andi Warisno Anshori, M Afif Anshory, Muhammad Isa Anuar, Aimi Aqila, Rista Nabilla Arai, Masayoshi Ardyono Priyadi Arifianto, Andry Ariy Khaerudin Arman. A, Arman. Asmadi, Ardani Aspita Laila Assyaeid, Fahmi Adnan Astuti, Rif'ah Dwi Astuti, Rifah Dwi Astuti, Rif’ah Dwi Ayuwardani, Mellasanti Aziz, Muhammad Farhan Abdul Bagus Yunianto Wibowo, Bagus Yunianto Basuki Rachmad Benyamin Timotiwu, Paul Budi, Rara Ririn Daryatinnisa, Nisrina Devina, Ursula Dian Herasari, Dian Duerapho, Zulfa Eriansyah, Satria Ety Apriliana Fadillah, M. Kharis Fahmi Abdillah Fajar, M Khablul Fani Rahma, Sari Fathurrahman, Nabila Aisha Fauzi Ahmad Muda Firdiansyah, Firdiansyah Firhan, Cygan Achmad Firmansyah Firmansyah Fitriani , Laksmi Garner, Andrew Douglas George Towar Ikbal Tawakkal Gikamaesta, Titha Aulia Ginting, Tri Yaninta Gusti Gusti, Gusti Hanifah, Hadijah Hasti Riakara Husni Hayati, Dwi Husairi, Ridwan Hussein, Jagad Satrio Hutabarat, Diki wahyudi Huzali, Ikhsan Ida Afriliana Ikhsan, Nur Ilmi, Rizqi Maulana Imam Bukhari Indarti, Desty Inggit Kentjonowaty Irma Lusi Nugraheni Irma Purnamasari, Ade Ishak, Nor Syahidah Iskandar Zulkarnaen Iskandar, Rossi John Hendri Juliasih, Ni Luh Gede Ratna Junaidi, Amir Kadarsih, Sri Kaslani Kurnia Azhari, Ana Kusuma Handayani, Kusuma Lutfiah, Rosyidatul Luthfia, Irin Mirrah M.Or. S.Pd. I Ketut Semarayasa . Malebra, Irawan Mardhianindro, Berry Maria, Wulan Six Marpaung, Hazrul Azwar Moch. Khamim Mohd. Isneini Muhamadin, Norhaslinda bt Muhammad Aqil Luthfan Muhammad Imam Khaudli Muhtar Haboddin Mujiburrohman, M Mukti Ali, Mochammad Mulyani, Laida Neti Mulyono Mulyono Muslih Muslih Mutia Zaida Ningrum Amrul, Hanifah Nahrowi, Ridho Najah, Muhammad Fatih Rizku Navita, Heki Rahayu Ngaisah, Siti Ngatmin Nihayatul Wafiroh Nini Rahmawati Nurmalasari, Neneng Nurohmah, Vina Siti Odi Nurdiawan OKTAVIA, REZA P., Mauridhi Hery Paduloh Paduloh Pandiangan, Kamisah Delilawati Prabowo, Galuh Praptiningsih, Praptiningsih Prastio, Bayu Purnamasari, Ade Irma Purnomo, Muhammad Sidiq Puspitasari, Riska Rachmat Trijono Raden Djuniarsono Rahmatuloh, Reiga Rahmawati, Alfiyatur Rahmawati, Alfiyatur Ramadhan, Sufi Rafli Riandani Azzahra, Syifa Rinawati Rinawati Riyanto, Makmun Rizqi Bachtiar Robbani, Hafidhur Rohman Saad Rosmayati Rosmayati Sabila Ananda Rizqy, Vaza Sain, Zohaib Hassan Sajar, Suryani Sajar, Suryani Yani Salsabila, Nafila Khansa Sapta Wardani, Ruri Riana Saptianing, Saptianing Saputri, Wiria Sari, Fifian Permata Seitz, Thomas R Sembiring, Ruth A Sembiring, Ruth Agnesia Setiabudi, Moh. Agung Setiawan, Andika Putra Setiawan, Fendi Setiyanto, Ari Setyo Nugroho, Bayu Sidik, Wisnu Permana Silitonga, Natasya Juliarta Siregar, Maimunah Sitepu, Sri Mahreni Siti Aimah Soap, Silva Fahsya Abdulrachman Solehati, Siti Sopian, Raden Mas Sri Rahayuningsih Sri Wahyuni Suarna, Nana Suarna, Nana Subandi Subandi Suharso Suharso Sukarata Adnyana, I Komang Sulistiyani, Endang Sumardi Sumartono Supriyatno, Makmur Sutopo Hadi Syahfitri, Windi Ely SYAIFUL BAHRI Syukron Ali Amiruddin, M. Taftazani, Andre Juan Tarigan, Rico Kris Hadinata Tengku Riza Zarzani N Tia Subekti Trina, Innamaa Triwahju Hardianto Udin, Udin Ulfah, Irma Fitriana Ulfah, Irma Fitriana Vera Agustriana Noorhidana Wardhana, Danu Indra Warsito, Kabul WAWAN ABDULLAH SETIAWAN, WAWAN ABDULLAH Wibisono, Denny Widjonarko . Widyastuti Widyastuti Widyono Hadi Wiedayanti, Destine Fajar Wilujeng, Nila Febri Wilujeng, Nila Febri Wulandari, Triyana Yani, Linda Yuli Yarmaidi Yarmaidi Yudanto, Dika Yunita Sari Zalfa, Ghina Firyaliani Zamriyetti, Zamriyetti