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Recent Submissions

  • ItemOpen Access
    Green extraction of proteins, umami and other free amino acids from brown macroalgae Ascophyllum nodosum and Fucus vesiculosus
    (Springer Science and Business Media LLC, 2021-8-24) Ummat, Viruja; Garcia-Vaquero, Marco; Poojary, Mahesha M.; Lund, Marianne N.; O’Donnell, Colm; Zhang, Zhihang; Tiwari, Brijesh K.; Science Foundation Ireland|16/RC/3889
    Seaweeds are a valuable potential source of protein, as well as free amino acids (FAAs) with umami flavour which are in high demand by the food industry. The most commonly used flavouring agents in the food industry are chemically synthesised and therefore are subject to concerns regarding their safety and associated consumer resistance. This study focuses on the effects of extraction time (1 and 2 h) and solvents (0.1 M HCl, 1% citric acid and deionised water) on the extraction of protein and FAAs including umami FAAs from Irish brown seaweeds (Ascophyllum nodosum and Fucus vesiculosus). Extraction yields were influenced by both the extraction solvent and time, and also varied according to the seaweed used. Both seaweeds investigated were found to be good sources of protein, FAAs including umami FAAs, demonstrating potential application as flavouring agents in the food industry. Overall, the use of green solvents (deionised water and citric acid) resulted in higher recoveries of compounds compared to HCl. The results of this study will facilitate the use of more sustainable solvents in industry for the extraction of proteins and flavouring agents from seaweed.
  • ItemOpen Access
    Valorisation Potential of Using Organic Side Streams as Feed for Tenebrio molitor, Acheta domesticus and Locusta migratoria
    (MDPI AG, 2021-9-5) Van Peer, Meggie; Frooninckx, Lotte; Coudron, Carl; Berrens, Siebe; Álvarez, Carlos; Deruytter, David; Verheyen, Geert; Van Miert, Sabine; Interreg NWE| NWE1004; ValuSect-Valuable inSects; Vlaams Agentschap Innoveren & Ondernemen
    Due to increasing welfare and population, the demand for alternative protein sources, obtained with minimal use of natural resources, is rising in today’s society. Insects have the potential to be used as an alternative protein source since they are considered to be able to convert low-value biomass into high-value components, resulting in opportunities for valorisation of organic side streams. Moreover, insects are suggested to be a sustainable protein source, referring to the efficient “feed to body” mass conversion potential. The aim of this review was to explore the potential to rear the yellow mealworm (Tenebrio molitor), the house cricket (Acheta domesticus) and the migratory locust (Locusta migratoria) on low or not yet valorised organic side streams within the food supply chain. This was performed by collecting research information focusing on the rearing of the insects in scope on organic biomass. In addition, the nutritional composition of the produced insects as well as their dietary requirements will be reviewed. Finally, the availability of side streams in the EU will be discussed as well as their potential to be used as insects feed.
  • ItemOpen Access
    Severe tail lesions in finisher pigs are associated with reduction in annual profit in farrow‐to‐finish pig farms
    (Wiley, 2021-1-16) van Staaveren, Nienke; Boyle, Laura Ann; Manzanilla, Edgar García; O'Driscoll, Keelin; Shalloo, Laurence; Díaz, Julia Adriana Calderón; Department of Agriculture, Food and the Marine|11/S/107; Department of Agriculture, Food and the Marine|14/S/832
    Objectives: We investigated the financial impact of different prevalence levels of severe tail lesions (STL) during the finisher stage associated with changes in average daily gain (ADG) in farrow-to-finish pig farms. Methods: Prevalence of STL was estimated for 31 farrow-to-finish pig farms. Regression tree analysis was used to identify a threshold for STL associated with differences in ADG. Then, a financial analysis was carried using the Teagasc Pig Production model. Results: A threshold of ≥0.86% prevalence of STL was associated with a 4.8% decrease in ADG which translated into pigs requiring 7 days more to reach target slaughter weight than in farms below the threshold. Reduced ADG meant that farms with higher prevalence of STL used 3.6% more weaner and 1.4% more finisher feed per year increasing feed costs by 1.5%. This reduced mean annual farm profit by 15.1% in farms with higher prevalence of STL. Conclusions: Our results provide an indication of the financial effects of STL in intensive pig production systems. The identified threshold for the prevalence of STL could provide a tangible target for farmers to focus on in developing strategies to reduce tail lesions and allow farmers to complete a cost benefit analysis of controlling STL.
  • ItemOpen Access
    The Impact of Seasonality in Pasture-Based Production Systems on Milk Composition and Functionality
    (MDPI AG, 2021-3-12) Timlin, Mark; Tobin, John T.; Brodkorb, André; Murphy, Eoin G.; Dillon, Pat; Hennessy, Deirdre; O’Donovan, Michael; Pierce, Karina M.; O’Callaghan, Tom F.; Enterprise Ireland |Food for Health Ireland|TC20180025
    Seasonal calving, pasture-based dairy systems are widely practiced in countries with a temperate climate and plentiful rainfall such as Ireland and New Zealand. This approach maximizes milk production from pasture and, consequently, is a low-cost, low-input dairy production system. On the other hand, the majority of global milk supply is derived from high input indoor total mixed ration systems where seasonal calving is not practiced due to the dependence on ensiled silages, grains and concentrated feeds, which are available year-round. Synchronous changes in the macro and micronutrients in milk are much more noticeable as lactation progresses through early, mid and late stages in seasonal systems compared to non-seasonal systems—which can have implications on the processability and functionality of milk.
  • ItemOpen Access
    Effect of Raw and Extruded Propionic Acid-Treated Field Beans on Energy and Crude Protein Digestibility (In-Vitro and In-Vivo), Growth and Carcass Quality in Grow-Finisher Pigs
    (MDPI AG, 2021-10-28) Torres-Pitarch, Alberto; Perez-Vendrell, Anna M.; Manzanilla, Edgar G.; Gardiner, Gillian E.; Ryan, Tomas; O Doherty, John V.; Torrallardona, David; Lawlor, Peadar G.; Teagasc; European Union’s Seventh Framework Programme
    The in-vitro ileal digestibility of dry matter (DM), organic matter (OM), and crude protein (CP) of field beans treated with propionic acid (trFB) and extruded trFB (exFB) was determined in experiment 1. The DE and dCP values of trFB and exFB were determined using the difference method in experiment 2. The effect of replacing SBM with trFB and exFB in grow-finisher diets on growth, carcass quality, apparent ileal digestibility (AiD), and total tract digestibility (ATTD) of DM, OM, gross energy (GE), and CP were investigated in experiment 3. In exp. 1, in-vitro digestibility of exFB compared to trFB was unchanged for DM (p = 0.12), increased for OM (p < 0.05), and increased for CP (p < 0.05). In exp. 2, the DE value of trFB and exFB was 14.38 and 15.75 MJ/kg respectively; and the dCP value was 21.35% and 21.42% respectively (on DM basis). In exp. 3, ADFI was higher for pigs fed trFB and exFB compared to the control diet (CON; p < 0.05), while ADG, FCR and carcass quality parameters of pigs did not differ among treatments (p > 0.05).

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