Manipulating antioxidant content in macroalgae in intensive land-based cultivation systems for functional food applications

M Magnusson; L Mata; N Wang; J Zhao; R de Nys; Nicholas A Paul

doi:10.1016/j.algal.2015.02.007

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Manipulating antioxidant content in macroalgae in intensive land-based cultivation systems for functional food applications

Journal article

Peer reviewed

Manipulating antioxidant content in macroalgae in intensive land-based cultivation systems for functional food applications

M Magnusson, L Mata, N Wang, J Zhao, R de Nys and Nicholas A Paul

Algal Research, Vol.8, pp.153-160

2015

DOI: https://doi.org/10.1016/j.algal.2015.02.007

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Abstract

antioxidant productivity

biomass productivity

bioproducts

nutraceutical

seaweed

total phenol content

derbesia

derbesia tenuissima

The recently domesticated marine macroalga Derbesia tenuissima is suitable for intensive land-based production and is a promising species for functional food applications and bioproducts as it is rich in bioactive components and has high biomass productivity. For the first time, we quantified the effects of inducing different degrees of light stress by managing culture conditions (as biomass density) in land-based 2000L cultures, on the total phenolic content, antioxidant capacity (DPPH, FRAP, ABTS), and biomass and antioxidant productivity of Derbesia. We demonstrate that it is possible to manipulate the antioxidant content of Derbesia by managing culture conditions, with up to 88% higher antioxidant capacity in biomass stocked at 0.5gL-1 than when stocked and maintained at 2gL-1, or stocked at 2gL-1 and harvested weekly. Antioxidant productivity of tank-cultured D. tenuissima is high - up to 680μmol gallic acid equivalents m-2day-1 - and can be maximised by selecting low initial stocking densities without compromising productivity per unit land area. © 2015 Elsevier B.V.

Details

Title: Manipulating antioxidant content in macroalgae in intensive land-based cultivation systems for functional food applications
Authors: M Magnusson (Author) - James Cook University
L Mata (Author) - James Cook University
N Wang (Author) - University of New South Wales
J Zhao (Author) - University of New South Wales
R de Nys (Author) - James Cook University
Nicholas A Paul (Author) - James Cook University
Publication details: Algal Research, Vol.8, pp.153-160
Publisher: Elsevier BV
Date published: 2015
DOI: 10.1016/j.algal.2015.02.007
ISSN: 2211-9264
Organisation Unit: School of Science and Engineering - Legacy; University of the Sunshine Coast, Queensland; School of Science, Technology and Engineering
Language: English
Record Identifier: 99450522202621
Output Type: Journal article

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Collaboration types: Domestic collaboration
Web Of Science research areas: Biotechnology & Applied Microbiology

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