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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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Journal : Journal of Fisheries

 1 
Growth and Metabolite Enhancement of Acidophile Euglena sp. Isolated from Indonesia under Different Photoperiod Cycles Erfianti, Tia; Daryono, Budi Setiadi; Budiman, Arief; Suyono, Eko Agus
Jurnal Ilmiah Perikanan dan Kelautan Vol. 16 No. 1 (2024): 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.v16i1.46193

Abstract

Abstract Euglena sp. is a unicellular, flagellated microalga considered one of the most promising microalgal feedstock species for biofuels. Reducing  the  level  of  liquid waste pollutants  can be  done  biologically  by  using  microalgal  organisms. Its metabolites, including lipids, proteins, carbohydrates, and pigments, are appropriate for producing biorefinery products such as biodiesel and jet fuels. They can be isolated from extreme environments, such as highly acidic and ammonia-rich environments, that are not conducive to their proliferation. This study sought to determine the effect of the photoperiod or (light: dark) cycle (24 L:0 D, 12 L:12 D, 14 L:10 D, and 16 L:8 D) on the growth, biomass, metabolite content consisting of lipids, carbohydrates, and proteins, and the rate of CO­2 uptake by Euglena sp. As stated previously, the study was conducted by cultivating Euglena sp. on a laboratory scale with four photoperiod regimens. The results indicated that optimal growth, biomass content, and metabolite content were obtained with a 24 D:0 L lighting cycle. The control treatment (24 L: 0 D) had the highest biomass productivity (0.032 g.L-1.day-1 ± 0.004), lipid content (0.387 g.L-1 ± 0.031), protein content (0.542 mg.Ml-1 ± 0.007), carbohydrate content (0.409 x104 g.L-1), chlorophyll a (6.237 g.L-1 ± 0.184), chlorophyll b (2.838 g.L-1 ± 0.253), and total carotenoid (1.566 g.L-1 ± 0.105). Full light illumination (24 L:0 D) was significantly producing carotenoid content, including phaeophytin a, phaeophytin b, violaxanthin, 9'-cis-neoxanthin, dino xanthin, and fucoxanthin. Highlight Research The growth rate was higher when Euglena was cultivated under continuous illumination. The biomass productivity of Euglena increased significantly under continuous illumination. The metabolite content of Euglena (lipids, proteins, and pigments) was higher in continuous illumination.
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
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 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