Water Recycling Influence in Growth and Antioxidant Activity of Rhodomonas Lens and Tetraselmis Chuii

Event Abstract Back to Event Water recycling influence in growth and antioxidant activity of Rhodomonas lens and Tetraselmis chuii Catarina R. Correia1*, Catarina Barraca1, Daniel F. Marques1 and Sergio M. Leandro1* 1 MARE - Marine and Environmental Sciences Centre, ESTM, Instituto Politécnico de Leiria, Portugal Microalgae are a source of different bioactive compounds and its mass production became one of the major challenges of aquaculture/biotechnological companies. Microalgae cultivation has some variables and processes that could be optimized (e.g. culture medium, energy and water consumption) in order to reduce costs production and increase economic yield. At large-scale production of microalgae, the water consumption has a significant environmental impact. It is estimated that around 1000 m3 of water are consumed per each kilogram of fresh microalgae biomass. To avoid or mitigate this problem, water-recycling processes are currently applied as an effective solution for this problem with significant economic benefits. At the present study, it was evaluated the effect of pre-used growth medium on the cultivation of Rhodomonas lens and Tetraselmis chuii. Microalgae were maintained in fed-batch, and subjected to five different combinations – 0%UM, 25%UM, 50%UM, 75%UM and 100%UM.For both microalgae, the cell density was daily monitored and the pigments concentrations were estimated. It was also evaluated the respective antioxidant activity. For Rhodomonas lens, it was showed an increased growth when exposed to 75% of reused medium, achieving a daily dry biomass productivity of 0.35 mg.L-1.d-1. Phycoerythryn production was also higher in this treatment (18.24 μg.gbiomass). On the other hand, Tetraselmis chuii did not revealed statistical differences when grown in used medium compared to the control (0% UM). Although, it was noted that when the cell were exposed to 50% of used medium it was verified a high level of daily productivity (0.28 mg.L-1.d-1) and the higher carotene content (331.7 μg.gbiomass). The obtained results suggest that water can be reused for microalgae grown, probably due to nutrient increase and phytohormones presence. Up to 75% and 50% of used water, for R. lens and T. chuii, respectively, may be reused, since can not only enhance daily productivity, but also their biotechnological value. Keywords: water recicling, Rhodomonas lens, Tetraselmis chuii, antioxidant activity, Microalgae mass cultivation Conference: IMMR | International Meeting on Marine Research 2016, Peniche, Portugal, 14 Jul - 15 Jul, 2016. Presentation Type: Poster presentation Topic: Blue Biotechnology Citation: Correia CR, Barraca C, Marques DF and Leandro SM (2016). Water recycling influence in growth and antioxidant activity of Rhodomonas lens and Tetraselmis chuii. Front. Mar. Sci. Conference Abstract: IMMR | International Meeting on Marine Research 2016. doi: 10.3389/conf.FMARS.2016.04.00055 Copyright: The abstracts in this collection have not been subject to any Frontiers peer review or checks, and are not endorsed by Frontiers. They are made available through the Frontiers publishing platform as a service to conference organizers and presenters. The copyright in the individual abstracts is owned by the author of each abstract or his/her employer unless otherwise stated. Each abstract, as well as the collection of abstracts, are published under a Creative Commons CC-BY 4.0 (attribution) licence (https://creativecommons.org/licenses/by/4.0/) and may thus be reproduced, translated, adapted and be the subject of derivative works provided the authors and Frontiers are attributed. For Frontiers’ terms and conditions please see https://www.frontiersin.org/legal/terms-and-conditions. Received: 14 May 2016; Published Online: 13 Jul 2016. * Correspondence: Dr. Catarina R Correia, MARE - Marine and Environmental Sciences Centre, ESTM, Instituto Politécnico de Leiria, Peniche, 2520, Portugal, catarinasrcorreia@gmail.com PhD. Sergio M Leandro, MARE - Marine and Environmental Sciences Centre, ESTM, Instituto Politécnico de Leiria, Peniche, 2520, Portugal, sleandro@ipleiria.pt Login Required This action requires you to be registered with Frontiers and logged in. To register or login click here. Abstract Info Abstract The Authors in Frontiers Catarina R Correia Catarina Barraca Daniel F Marques Sergio M Leandro Google Catarina R Correia Catarina Barraca Daniel F Marques Sergio M Leandro Google Scholar Catarina R Correia Catarina Barraca Daniel F Marques Sergio M Leandro PubMed Catarina R Correia Catarina Barraca Daniel F Marques Sergio M Leandro Related Article in Frontiers Google Scholar PubMed Abstract Close Back to top Javascript is disabled. Please enable Javascript in your browser settings in order to see all the content on this page.