Integrated biorefinery process for sustainable fractionation of Ulva ohnoi (Chlorophyta): process optimization and reven
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23RD INTERNATIONAL SEAWEED SYMPOSIUM, JEJU
Integrated biorefinery process for sustainable fractionation of Ulva ohnoi (Chlorophyta): process optimization and revenue analysis Meghanath S. Prabhu 1,2
&
Alvaro Israel 3 & Ruslana R. Palatnik 4 & David Zilberman 5 & Alexander Golberg 1
Received: 24 July 2019 / Revised and accepted: 15 January 2020 # Springer Nature B.V. 2020
Abstract Blue economy, the sustainable and effective use of ocean resources for economic growth, is a major challenge to coastal communities. Marine macroalgae are potentially sustainable feedstock for future food, materials, chemicals, and fuels. For seaweed biorefinery, the fractionation of the biomass to co-produce multiple products is crucial in the efficient valorization of the marine biomass. In this work, we developed a protocol for co-production of six different products from the green macroalga Ulva ohnoi using green extraction methods. A total of 90.31 ± 1.94% of the initial biomass was recovered in separated products. The fraction of the recovered products from initial dry weight biomass was 45.42 ± 1.91% salts, 3.67 ± 1.38% starch, 3.81 ± 1.26% lipids, 13.88 ± 0.40% ulvan, 14.83 ± 1.06% proteins, and 8.70 ± 1.87% cellulose. A potential revenue analyses, based on these experimental data and current market prices, suggests that total the revenue fluctuates between US$1.56 and US$3.93 kg−1 of dry biomass and depends on recovered products fraction in the seaweed biomass and products market value. Keywords Biorefinery . Blue economy . Co-production . Macroalgae . Marine biorefinery . Ulva . Chlorophyta
Introduction
Electronic supplementary material The online version of this article (https://doi.org/10.1007/s10811-020-02044-0) contains supplementary material, which is available to authorized users. * Meghanath S. Prabhu [email protected] * Alexander Golberg [email protected] 1
Porter School of the Environment and Earth Sciences, Tel Aviv University, Tel Aviv, Israel
2
Department of Biotechnology, Goa University, Taleigao, Goa, India
3
Israel Oceanographic and Limnological Research Ltd., The National Institute of Oceanography, Haifa, Israel
4
Department of Economics and Management, and SEED – the Sustainable Economic and Environmental Development Research Center, The Max Stern Yezreel Valley College, Israel. NRERCNatural Resource and Environmental Research Center, University of Haifa, Haifa, Israel
5
Department of Agricultural and Resource Economics, The University of California at Berkley, Berkeley, CA, USA
For many coastal communities, extension of the economic activities to the seas and oceans provides an exciting opportunity for growth and development. Sustainable use and management of the marine areas, a blue economy, could provide novel tools to combat poverty while protecting the ecosystems (Olteanu A and Stinga V 2019). Marine macroalgae (seaweeds) are primary producers in the seas and oceans and thus can power marine aquaculture and marine biorefineries (Balina et al. 2017) as terrestrial crops power ag
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