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All Journal HAYATI Journal of Biosciences Journal of Tropical Life Science : International Journal of Theoretical, Experimental, and Applied Life Sciences AL KAUNIYAH Berkala Bioteknologi Makara Journal of Science Depik Jurnal Ilmu-Ilmu Perairan, Pesisir dan Perikanan Depik Jurnal Ilmu-Ilmu Perairan, Pesisir, dan Perikanan Journal of Fisheries & Marine
Erfianti, Tia
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Earth & Planetary Sciences Education Engineering Environmental Science Materials Science & Nanotechnology

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Harvesting Optimization, Biomass, and Lipid Content Analysis of Euglena sp. Culture with Ettlia texensis Bioflocculant and Commercial Chitosan Agus Suyono, Eko; Mudrikah, Siti; Karilanata, Khalid Erlangga; Kurnianto, Dedy; Budiman, Arief; Dewayanto , Nugroho; Putri, Renata Adaranyssa Egistha; Sadewo , Brilian Ryan; Erfianti, Tia
Jurnal Ilmiah Perikanan dan Kelautan Vol. 17 No. 2 (2025): JURNAL ILMIAH PERIKANAN DAN KELAUTAN
Publisher : Faculty of Fisheries and Marine Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/jipk.v17i2.57417

Abstract

Graphical Abstract   Highlight Research  Bioflocculation technique can improve the harvesting effectiveness of semimass culture of Euglena sp. The addition of E. texensis can significantly increase the flocculation efficiency of Euglena sp. The addition of commercial chitosan was able to increase the flocculation efficiency of Euglena sp. The biomass and lipid content produced by Euglena sp. with E. texensis flocculant agent showed higher results than the biomass and lipid content produced by Euglena sp. with commercial chitosan flocculant agent.   Abstract Euglena sp. has a high potential to be developed as biofuel. However, the high cost and energy required for the harvesting process are hindering the production. Flocculation using natural substances, such as microorganisms and biopolymers, offers a promising solution to minimize energy and production costs, so it is applicable on a mass scale. Ettlia texensis is one of the autoflocculating microalgae that can excrete extracellular polymeric substances (EPS). Chitosan is a linear copolymer of D-glucosamine and N-acetyl-D-glucosamine produced by the deacetylation of chitin, which is usually exploited by marine crustaceans, shrimp, and crabs. Chitosan has a very high cation load, so it is often used for coagulation or flocculation. This study explores the potential of E. texensis and chitosan as flocculant agents to harvest the mass culture of Euglena sp. by giving different doses E. texensis with 1:0.25 (E3), 1:0.5 (E4), 1:1 (E5), and 1:2 (E6), and chitosan with 1.25 mg (C1), 2.5 mg (C2), 3.75 mg (C3), and 5 mg (C4). This research began with the cultivation of Euglena sp. and E. texensis on a 50 L scale for 12 days. The effectiveness of flocculation was measured by the spectrophotometric method. Based on this research, the best treatment for harvesting Euglena sp. culture by bioflocculation was shown by the addition of chitosan (5 mg) with the recovery of 84.83%, 0.2213 mg/mL biomass, and 0.2117 mg/mL lipid content. Meanwhile, with E.  texensis, the best was shown by the ratio of 1:2 with recovery 84.71%, 0.2053 mg/mL biomass, and 0.1753 mg/mL
Silica's Medium in Various Concentration Effect on Navicula sp. Metabolism Karillanata, Khalid Erlangga; Luthfiana, Dwi Hardianti; Maghfiroh, Khusnul Qonita; Kurnianto, Dedy; Amelia, Ria; Erfianti, Tia; Suyono, Eko Agus
Al-Kauniyah: Jurnal Biologi Vol. 18 No. 1 (2025): AL-KAUNIYAH JURNAL BIOLOGI
Publisher : Department of Biology, Faculty of Science and Technology, Syarif Hidayatullah State Islami

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15408/kauniyah.v1i1.31078

Abstract

 Abstract Navicula sp., an aquatic microalgae species, are numerous and diverse, with high metabolites so they hold great potential in biotechnology. Although it has many advantages, it is often not used in industry. In silica medium, Navicula sp. produces various metabolites depending on their concentration. This research aims to discover how adding silica to the medium affects the growth and production of Navicula sp. metabolites so that cultivation can be carried out at low cost and with maximum results. For 21 days, this experiment was carried out with three concentrations of silica (1; 1.5; and 2 mL/L) and one control (0 mL/L) grown each in a 500 mL culture of Navicula sp. Repetition was done thrice for each measurement parameter; growth speed, biomass production, lipids, carbohydrates, and protein. Medium silica 1.5 mL/L was the optimal concentration for growth speed, biomass production, and carbohydrate production for Navicula sp. (0.083; 0.54; and 0.075 mg/day, respectively). Meanwhile, the optimal silica concentration for lipid and protein production for Navicula sp. were 1 mL/L medium and control medium (0.517 and 0.8 × 10-2 mg/day, respectively). Overall, this research can be used to grow Navicula sp. in producing specific metabolites optimally. AbstrakNavicula sp., spesies mikroalga akuatik, sangat banyak dan beragam dengan metabolit yang tinggi, sehingga memiliki potensi yang besar dalam bioteknologi. Meskipun memiliki banyak keunggulan, spesies ini seringkali tidak digunakan dalam industri. Dalam medium silika, Navicula sp. menghasilkan berbagai metabolit tergantung pada konsentrasinya. Tujuan dari penelitan ini adalah untuk mengetahui bagaimana penambahan silika dalam medium memengaruhi pertumbuhan dan produksi metabolit Navicula sp., sehingga kultivasi dapat dilakukan dengan biaya yang rendah dan hasil yang maksimal. Selama 21 hari, eksperimen ini dilakukan dengan tiga konsentrasi silika (1; 1,5; dan 2 mL/L) dan satu kontrol (0 mL/L) yang ditumbuhkan di dalam 500 mL kultur Navicula sp. Pengulangan dilakukan tiga kali untuk setiap parameter pengukuran, yaitu kecepatan pertumbuhan, produksi biomassa, lipid, karbohidrat, dan protein. Medium silika 1,5 mL/L merupakan konsentrasi yang optimal untuk kecepatan pertumbuhan, produksi biomassa, dan produksi karbohidrat bagi Navicula sp. (0.083; 0.54;  dan 0.075 mg/hari, secara berurutan). Sementara itu, konsentrasi silika yang optimal untuk produksi lipid dan protein bagi Navicula sp., secara berurutan, adalah medium 1 mL/L dan medium kontrol (0.517 dan 0.8 × 10-2 mg/hari). Secara keseluruhan, penelitian ini dapat dijadikan sebagai solusi untuk menumbuhkan Navicula sp. dalam memproduksi metabolit tertentu secara optimal.
Co-Authors Agus Suyono, Eko Amelia, Ria Ardipeni, Witia Arief Budiman Astiti, Adam BUDI SETIADI DARYONO Cindiati, Maya Devi Anggraini, Irika Dewayanto , Nugroho Dinda Khairunnisa, Dinda Dwi Umi Siswanti Eko Agus Suyono Eko Agus Suyono Fitri Natalia Hardianto, Muhammad Andhi Hermin Pancasakti Kusumaningrum Karilanata, Khalid Erlangga Karillanata, Khalid Erlangga Kurnianto, Dedy Larasati, Ersi Luthfiana, Dwi Hardianti Maggandari, Revata Maghfiroh, Khusnul Qonita Mardyansah, Deviko Marno, Septhian Maulana, Sofyan Mawarni, Shelina Nurunnisa Mufida, Na’imatul Natalia, Fitri Nugroho Dewayanto, Nugroho Nurafifah, Istini Nurul Hida, Aulia Setyo Putri, Renata Adaranyssa Egistha Qonita Maghfiroh, Khusnul Rejeki Siti Ferniah Rizko, Nurmalisa Ryan Sadewo, Brilian Sadewo , Brilian Ryan Sadewo, Brilian Ryan Siti Ferniah, Rejeki siti mudrikah Solly Aryza Sri Pujiyanto Suyono, Eko Agus Agus Tri Rahayu, Hesti Wulandari, Ismia