Prof. Dr. Eng. Uju, S.Pi., M.Si.

Research Interests

Prof. Uju’s research interests focus on marine bioproduct development and sustainable biorefinery systems, particularly involving seaweed and marine biomass. His work explores green extraction and conversion technologies such as ultrasonication, ionic liquids, and deep eutectic solvents for producing hydrocolloids, biopolymers, pigments, and bioethanol. He is also interested in zero-waste processing, biomaterial design, and valorization of seaweed residues into value-added products. His studies integrate bioprocess engineering, marine biotechnology, and circular bioeconomy principles to support the advancement of Indonesia’s blue economy and sustainable marine industries.

Research Projects

• • Optimization of Phycoerythrin Extraction from Kappaphycus alvarezii Using Ultrasonication with a Response Surface Methodology (RSM) Approach — Directorate of Higher Education (DGHE), Ministry of Higher Education, Science, and Technology, 2025

• Optimization of Functional Beverage Formula from Nipah Leaves (Nypa fruticans) and Carrageenan as Immunostimulants using the I-Optimal Mixture Design Method — DGHE, 2024
• Exploration of Tropical Marine Endophytic Fungi producing polymer biomaterials for innovative drug delivery systems — DGHE, 2024
• Food Safety Innovation: Active and intelligent packaging based on nanofiber aerogel to reduce exposure to polycyclic aromatic hydrocarbon carcinogens in traditional smoked products — DGHE, 2024
• Development of Deep Eutectic Solvents for green extraction of potential seaweed biomass — DGHE, Japan Society for the Promotion of Science (JSPS) Joint Research Project, 2021–2024
• Straw from Seaweed and Its Byproduct — DGHE Kedai Reka Program, 2023
• Diversification of Ulva Seaweed Utilization as nori-like and micro-nano cellulose through ultrasonic treatment and ionic liquid — Indonesia Collaborative Research Program, 2021
• Extraction of Biopigment and Phycocolloid Materials from red seaweed algae with ultrasonic wave acceleration at low temperatures — University Center of Excellence Program, DIKTI, 2017
• Production of Refined Carrageenan and Bioethanol based on Cottonii seaweed through integrated and simultaneous ionic liquid treatment — University Center of Excellence Program, DIKTI, 2015–2016

Recent Publications

1. Siszadli Dwi Farand, F., Sumaryanto, H., Uju, U., Subaryono, S., Sinurat, E., Mulyasari, M., Purnomo, A.H., Noviendri, D., 2025. Optimization of alkali-treated Gracilaria verrucosa chips production using response surface methodology: Physicochemical characterization and agar quality assessment. J Pharm Pharmacogn Res 13, 1419–1431.
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2. Hardiningtyas, S.D., Haliza, G.N., Tarman, K., Uju. (2025). Valorization of the brown seaweed Sargassum sp. as a sole carbon source for marine endophytic fungus Aspergillus flavus KTR49 cultivation. Waste Biomass Valorization.
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3. Pari, R.F., Uju, Hardiningtyas, S.D., Ramadhan, W., Wakabayashi, R., Goto, M., Kamiya, N. (2025). Ulva seaweed-derived ulvan: A promising marine polysaccharide as a sustainable resource for biomaterial design. Marine Drugs, 23, 56.
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4. Pari, R.F., Uju, Ramadhan, W., Hardiningtyas, S.D., Toyofuku, K., Wakabayashi, R., Goto, M., Kamiya, N. (2025). Deep eutectic solvent-assisted pretreatment of Ulva seaweed cellulose and in silico characterization. Journal of Molecular Liquids, 435, 128095.
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5. Ramadhan, W., Sitepu, N.K.B., Salmiragga, T.S., Fauzan, M.N., Hardiningtyas, S.D., Kurnia, K.A., Pari, R.F., Wijayanta, A.T., Uju. (2025). Effect of ultrasound-assisted vacuum drying on moisture transport behavior and physicochemical properties of nori-like products prepared from green laver (Ulva lactuca). Food Biophysics, 20, 102.
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6. Ramadhan, W., Santoso, J., Uju, Dewangga, R.G.L., Natanael, M., Luthfiansyah, M.A., Rachmawati, A.Y., Santosa, Z.A. (2025). Investigation of polymer blend formulation and homogenization dynamics in the development of biodegradable, hydrophobic, and heat-resistant seaweed-based bioplastic straws. Sustainable Food Technology.
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7. Hardiningtyas, S.D., Putra, B.U., Anggara, K.B., Yuniasani, I., Ramadhan, W., Pari, R.F., Uju, Hastuti, N., Indrawan, D.A., Wakabayashi, R., Goto, M., Kamiya, N. (2024). Sustainable synthesis of cellulose nanofibers from industrial agar seaweed waste biomass using hydrated deep eutectic solvents. Waste Biomass Valorization, 15, 4899–4913.
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8. Muryanto, M., Chasanah, E., Sudiyani, Y., Uju, Bardant, T.B., Triwahyuni, E., Maryana, R., Irawan, Y., Munifah, I., Sugiyono, Sari, R.N., Martosuyono, P., Das, A.K. (2024). Characterization of solid waste biomass of agar processing plants and scale-up production of bioethanol. Biomass Conversion and Biorefinery, 14, 22357–22366.
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9. Pari, R.F., Uju, Wijayanta, A.T., Ramadhan, W., Hardiningtyas, S.D., Kurnia, K.A., Firmansyah, M.L., Hana, A., Abrar, M.N., Wakabayashi, R., Kamiya, N., Goto, M. (2024). Prospecting Ulva lactuca seaweed in Java Island, Indonesia, as a candidate resource for industrial applications. Fisheries Science, 90, 795–808.
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10. Ramadhan, W., Alamsyah, A., Uju, Hardiningtyas, S.D., Pari, R.F., Wakabayashi, R., Kamiya, N., Goto, M. (2024). Facilitating ulvan extraction from Ulva lactuca via deep eutectic solvent and peracetic acid treatment. ASEAN Journal of Chemical Engineering, 24, 90–101.
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11. Bardant, T.B., Triwahyuni, E., Muryant, Maryana, R., Irawan, Y., Munifah, I., Martosuyono, P., Nurbayasari, R., Sugiyon, Uju, Chasanah, E., Sudiyani, Y. (2021). Simulation for integrating bioethanol production in existing commercial agar extraction plant toward zero waste technology. Agriculture and Natural Resources, 55, 893–903.
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