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

Magnusson, Marie, Mata, Leonardo, Wang, Na, Zhao, Jian, de Nys, Rocky, and Paul, Nicholas A. (2015) Manipulating antioxidant content in macroalgae in intensive land-based cultivation systems for functional food applications. Algal Research, 8. pp. 153-160.

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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 2000 L 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 0.5 g L−1 than when stocked and maintained at 2 g L−1, or stocked at 2 g L−1 and harvested weekly. Antioxidant productivity of tank-cultured D. tenuissima is high – up to 680 μmol gallic acid equivalents m−2 day−1 – and can be maximised by selecting low initial stocking densities without compromising productivity per unit land area.

Item ID: 37686
Item Type: Article (Research - C1)
ISSN: 2211-9264
Keywords: biomass productivity, antioxidant productivity, bioproducts, total phenol content, nutraceutical, seaweed
Funders: Advanced Manufacturing Cooperative Research Centre (AMCRC)
Date Deposited: 05 Mar 2015 04:11
FoR Codes: 10 TECHNOLOGY > 1003 Industrial Biotechnology > 100302 Bioprocessing, Bioproduction and Bioproducts @ 50%
07 AGRICULTURAL AND VETERINARY SCIENCES > 0704 Fisheries Sciences > 070401 Aquaculture @ 25%
06 BIOLOGICAL SCIENCES > 0607 Plant Biology > 060701 Phycology (incl Marine Grasses) @ 25%
SEO Codes: 83 ANIMAL PRODUCTION AND ANIMAL PRIMARY PRODUCTS > 8301 Fisheries - Aquaculture > 830199 Fisheries - Aquaculture not elsewhere classified @ 20%
86 MANUFACTURING > 8601 Processed Food Products and Beverages (excl. Dairy Products) > 860105 Nutraceuticals and Functional Foods @ 40%
82 PLANT PRODUCTION AND PLANT PRIMARY PRODUCTS > 8203 Industrial Crops > 820399 Industrial Crops not elsewhere classified @ 40%
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