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Project Code [2021R647]
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Primary Funding Agency
DAFM
Co-Funding Organisation(s)
n/a
Lead Organisation
University of Limerick (UL)
Project Abstract
SeAFEED, is a comprehensive study of phlorotannins (marine polyphenols) from seaweeds as a potential replacement for zinc in pig feed diets, which will be banned in the EU from 2022. Previous studies have shown that seaweeds can inhibit the growth of pathogens associated with livestock production (e.g. E. coli), thus potentially offering a viable alternative to zinc. In addition, these compounds have also recently shown significant promise as a methane inhibitor in ruminants, and could offer a viable solution to reduce GHG in ruminants. However, there are several drawbacks associated with seaweeds in animal feeds: � Availability of seaweed biomass at the scale required for livestock production due to seaweed biomass being harvested for other applications, e.g. hydrocolloid, biostimulant industries. � Competing with industries who already harvest in excess of 25 million tons of seaweed globally each year, adding additional pressure on wild and farmed resources, with significant ecological impacts. � Only small quantities of phlorotannins are available in seaweeds naturally. To address these issues, this project will take a biorefinery approach, isolating phlorotannins-rich fraction from the alginate fraction using green separation approaches and assessing the potential of other fractions, e.g. iodine, fucoxanthin for other commercial applications. In the hydrocolloids industry, phlorotannins cause discoloration to the end products, which are currently bleached to mask their appearance. Therefore, separation prior to alginate production adds value to seaweeds in the hydrocolloids industry. Processing and formulation of pellets is of utmost importance and will be optimised for targeted delivery of the bioactives to pigs. In addition, SeAFEED will investigate the feasibility of increasing polyphenol concentrations in cultivated seaweeds by inducing higher polyphenol concentrations through environmental stressors. Evidence has shown that environmental stressors such as exposure to sunlight and hydrodynamics can influence polyphenol concentrations.
Grant Approved
�1,198,940.41
Research Theme
Climate Solutions, Transition Management and Opportunities
Initial Projected Completion Date
31/05/2026