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Publication . Article . Other literature type . 2019

Development of alginate hydrogels active against adhesion of microalgae

L. Abi Nassif; Stéphane Rioual; Rozenn Trepos; Marilyne Fauchon; Wehbeh Farah; Claire Hellio; Marie Abboud; +1 Authors
Open Access
English
Published: 01 Mar 2019
Publisher: Elsevier Science Bv
Country: France
Abstract

International audience; Microorganisms have the ability to settle on nearly all man-made surfaces in contact with seawater and subsequently to form biofilm. Biofilms control and removal is necessary in the sectors of maritime transport, energy... In this work, we present the development of new pure calcium, zinc or copper alginate, but also mixed Ca/Cu and Ca/Zn alginate hydrogels. These materials have been evaluated for their potential inhibition of adhesion of two key biofilm-forming microalgae Halamphora coffeaeformis and Cylindrotheca closterium). All the tested materials have presented high adhesion inhibition about 80%). Copper-base materials present a high toxicity against H. coffeaeformis. Pure zinc alginate is also toxic for this strain. However, the addition of calcium in zinc alginate leads to the toxicity reduction. The toxicity of these materials differs according to the strains. Consequently, mixed zinc/calcium alginate are efficient at inhibiting microalgal adhesion with a low level of cells toxicity. These alginate hydrogels are promising materials because they are efficient, cheap, easy to develop and eco-friendly.

Subjects by Vocabulary

Microsoft Academic Graph classification: Microorganism Toxicity Chemical engineering Biofilm Alginate hydrogel Adhesion Calcium chemistry.chemical_element chemistry Zinc Materials science Calcium alginate chemistry.chemical_compound

Subjects

Biofilm, Adhesion, Alginate, Zinc, Biomaterials, Microalgae, Microalgae, Biomaterials, Zinc, Alginate, ACL, Biofilm, Adhesion, [CHIM.POLY]Chemical Sciences/Polymers, [SPI.MAT]Engineering Sciences [physics]/Materials, Mechanical Engineering, Mechanics of Materials, Condensed Matter Physics, General Materials Science

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