1,880 results match your criteria: "Part of Wageningen University & Research[Affiliation]"

Feed additives for methane mitigation: A guideline to uncover the mode of action of antimethanogenic feed additives for ruminants.

J Dairy Sci

January 2025

Instituto de Investigaciones Agropecuarias - Centro Regional de Investigación Carillanca, 4880000 Vilcún, La Araucanía, Chile. Electronic address:

This publication aims to provide guidelines of the knowledge required and the potential research to be conducted in order to understand the mode of action of antimethanogenic feed additives (AMFA). In the first part of the paper, we classify AMFA into 4 categories according to their mode of action: (1) lowering dihydrogen (H) production; (2) inhibiting methanogens; (3) promoting alternative H-incorporating pathways; and (4) oxidizing methane (CH). The second part of the paper presents questions that guide the research to identify the mode of action of an AMFA on the rumen CH production from 5 different perspectives: (1) microbiology; (2) cell and molecular biochemistry; (3) microbial ecology; (4) animal metabolism; and (5) cross-cutting aspects.

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Thin liquid films stabilized by plant proteins: Implications for foam stability.

J Colloid Interface Sci

December 2024

Laboratory of Biobased Chemistry and Technology, Wageningen University, Bornse Weilanden 9, Wageningen, 6708WG, Netherlands.

Hypothesis: Plant-based proteins offer a sustainable solution for stabilizing multiphase food materials like edible foams and emulsions. However, challenges in understanding and engineering plant protein-stabilized interfaces persist, mostly because of the commonly poorer functionality and complex composition of the respective protein isolates. We hypothesize that part of the limited understanding is related to the lack of experimental data on the length-scale of the thin liquid film that separates two neighboring bubbles.

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Introduction: Poor oral health can influence an individual's dietary intake, which may result in malnutrition. Both problems in oral health and function and malnutrition are common in older people. The aim of the present study was to explore the associations between oral health and oral function and malnutrition in community-dwelling older people within three different databases.

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() is a major porcine pathogen. Some strains have a substantial zoonotic potential such as serotype () 14 as the second most important in human infections. To this date no licensed vaccine is available in Europe though subunit vaccines and bacterins have been examined by several scientific groups worldwide.

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Unlabelled: Natural resource management networks cohere due to mutual dependencies and fragment, in part, due to the perceived risks of interaction. However, research on these networks has tended to accept coherence a priori rather than problematizing dependence, and few studies exist on interorganizational risk perception. This article presents the results of a study operationalizing these concepts and measuring the distribution of three types of dependence (capital, legitimacy, and regulatory) and two types of perceived risk (performance and sanction) among nearly fifty stakeholder groups and organizations participating in the management of fisheries in the binational Gulf of Maine.

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Background: Antimicrobial resistance (AMR) in livestock and the environment likely contribute to the prevalence of AMR in humans with potential detrimental effects on human health. As such, annual mandatory monitoring of AMR in livestock occurs within the European Union (EU), according to harmonised methods. Extended-spectrum cephalosporins-resistant (ESC-resistant) , including extended-spectrum β-lactamases (ESBL), AmpC β-lactamases (AmpC) and carbapenemase producing , are considered of particular importance and are therefore included in the monitoring program.

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Bovine tuberculosis (bTB) has a complex infection ecology and is difficult to control in many countries, including Ireland. For many years, the Irish national bTB eradication programme relied on cattle-based control measures, including test-and-removal with related movement restrictions. In the early 2000s, badger culling was added as a part of the control measure in the national programme.

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Article Synopsis
  • Higher olefins (HO) are important chemicals used to make various products including plastics, lubricants, and detergents, and their developmental toxicity was studied for regulatory purposes.
  • Five specific HO were tested on pregnant Sprague-Dawley rats at different doses (0, 100, 300, and 1000 mg/kg bw/day) to assess their effects from Day 3 to Day 19 of gestation.
  • The studies found no significant maternal or fetal toxicity from HO, with a No-Observed-Adverse-Effect Level (NOAEL) of 1000 mg/kg bw/day, indicating safety for both mother and fetus at this dose.
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Information about reproductive habitat and migration pathways is of paramount importance to restore migratory fish species. This study assesses the availability of spawning and nursery habitats for the European sturgeon () in the delta and lower Rhine (covering over 350 river kilometres) as part of a larger feasibility assessment for a future restoration of this critically endangered species. The general approach has three steps: (1) the identification of the species' specific habitat requirements, based on a systematic literature review; (2) the collection and preprocessing of data from two countries, including the 1D and 2D modelling of water depths and flow velocities; and (3) GIS-based mapping of spawning and nursery habitat.

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  • The study explores the relationship between antimicrobial use (AMU) in livestock and antimicrobial resistance (AMR) in human infections in the Netherlands from 2004 to 2020.
  • It finds that while AMU in livestock is decreasing, AMR among human infections is still increasing, indicating that reducing livestock AMU alone may not effectively combat AMR in humans.
  • The research highlights the need for further investigation into the genetic and evolutionary factors contributing to AMR, suggesting that a broader strategy may be needed to address this public health issue.
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Exposure to aromatic amines may occur tobacco smoke, hair dyes or tattoo inks, but also in the workplace during certain manufacturing processes. As some aromatic amines are known or suspected carcinogens, human biomonitoring (HBM) is essential to assess their exposure. Aromatic amines were among the selected chemicals in HBM4EU, a European-wide project to harmonise and advance HBM within 30 European countries.

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BackgroundAntimicrobial resistance (AMR) is a global threat. Monitoring using an integrated One Health approach is essential to detect changes in AMR occurrence.AimWe aimed to detect AMR genes in pathogenic and commensal collected 2013-2020 within monitoring programmes and research from food animals, food (fresh retail raw meat) and humans in six European countries, to compare vertical and horizontal transmission.

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Electromagnetic fields and diadromous fish spawning migration: An urgent call for knowledge.

Mar Environ Res

November 2024

Witteveen+Bos Engineering and consultancy, Daalsesingel 51c, 3511 SW Utrecht, the Netherlands; Marine Animal Ecology Group, Wageningen University, P.O. Box 338, 6700 AH, Wageningen, the Netherlands.

Diadromous fish species are characterised by spawning migrations between freshwater and marine environments, where they traverse through estuaries and close to coasts. This species group has declined substantially over the past decades due to anthropogenic effects such as habitat fragmentation and loss and overfishing. A rising potential threat to their population recovery is the increasing installation of subsea power cables (SPCs) which generate electromagnetic fields (EMF) as they transport energy from offshore wind farms to land.

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Resistance intensity test (RIT): a novel bioassay for quantifying the level of acaricide resistance in Rhipicephalus microplus ticks.

Parasit Vectors

November 2024

Instituto de Pesquisas Veterinárias Desidério Finamor, Estrada Do Conde, 6000, Eldorado Do Sul, RS, 92990-000, Brazil.

Background: One bioassay for detecting acaricide resistance in livestock ticks is the adult immersion test (AIT), wherein engorged ticks are briefly immersed into a solution of a particular acaricidal compound and examined for mortality, their egg-laying capacity and offspring hatchability in vitro. Usually, the recommended label dose or an established discriminating dose of an acaricide is used to determine high mortality (≥ 95%) of susceptible tick strains. Such a test intends to detect the presence of resistance in a tick population.

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How to define parenteral nutrition.

Crit Care

November 2024

Department of Anaesthesiology and Intensive Care, Institute of Clinical Medicine, University of Tartu, Tartu, Estonia.

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Towards high throughput analysis using 96-well plate solid phase extraction to determine sedatives and β-blocker residues in food control monitoring.

Anal Chim Acta

December 2024

Department of Growth Promotors, European Union Reference Laboratory, Wageningen Food Safety Research (WFSR), Part of Wageningen University & Research, 6708WB, Wageningen, the Netherlands.

Background: Veterinary drugs are widely used in animal production to prevent infections and treat diseases but, this may cause a risk to consumers. Due to the high number of food samples required to monitor yearly, simple, fast, sensitive and selective analytical methods are needed in control laboratories to ensure consumers safety. Nevertheless, many analytical methodologies available in these laboratories include multiple steps and therefore are time-consuming and hinder the analysis throughput requiring significant amounts of solvents and reagents.

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Create the future of food with children: Qualitative insights into children's perception of plant-based meat, fish, and dairy alternatives.

Appetite

January 2025

Food Quality and Design Group, Department of Agrotechnology and Food Sciences, Wageningen University & Research, P.O. Box 17, Bornse Weilanden 9, 6708 WG, Wageningen, Netherlands.

Children's food preferences are a major influence on what is served for dinner in the household. However, little is known about children's perceptions of plant-based foods. This study aimed to better understand how 9- to 11-year-old children perceive plant-based meat and dairy alternatives.

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Article Synopsis
  • HiPSC-derived intestinal epithelial cells (IECs) are a more accurate model for studying intestinal health compared to traditional Caco-2 cells, but their immune response capabilities haven't been thoroughly explored yet.
  • The study tested the immune response of IECs to a pro-inflammatory cytokine cocktail and assessed the effects of Lactiplantibacillus plantarum WCFS1 on these cells, finding that IECs had a stronger inflammatory response than Caco-2 cells.
  • While IECs showed significant potential for studying immune responses, there were limited similarities in gene expression when compared to in vivo data, likely due to differences in experimental setups.
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From theoretical aspects to practical food Pickering emulsions: Formation, stabilization, and complexities linked to the use of colloidal food particles.

Adv Colloid Interface Sci

December 2024

Wageningen University, Department of Agrotechnology & Food Sciences, Laboratory of Physical Chemistry and Soft Matter, Stippeneng 4, 6708 WE Wageningen, the Netherlands.

We noticed that in literature, the term Pickering emulsion (PE) is used as soon as ingredients contain particles, and in this review, we ask ourselves if that is done rightfully so. The basic behavior taking place in particle-stabilized emulsions leads to the conclusion that the desorption energy of particles is generally high making particles highly suited to physically stabilize emulsions. Exceptions are particles with extreme contact angles or systems with very low interfacial tension.

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  • Adding vitamin C-rich fruits like guava to iron-containing meals, such as mungbean dal, may help improve hemoglobin levels and reduce anemia in children.
  • A study with 200 rural school children in India found that eating mungbean dal with guava led to significant increases in hemoglobin and a decrease in anemia prevalence compared to eating mungbean dal alone.
  • Although there was a positive effect on hemoglobin and anemia rates, the addition of guava did not significantly improve the overall body iron stores of the children.
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Early-life gut microbiota development depends on a highly synchronized microbial colonization process in which diet is a key regulator. Microbiota transition toward a more adult-like state in toddlerhood goes hand in hand with the transition from a milk-based diet to a family diet. Microbiota development during the first year of life has been extensively researched; however, studies during toddlerhood remain sparse.

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The use of certain antibiotics in food-producing animals is allowed in Europe following Regulation (EU) 2017/625. However, use could result in antibiotic residues in foodstuffs of animal origin. Maximum residue limits (MRLs) are in place to protect consumers.

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Information on the epidemiological and economic consequences of control measures is fundamental to design effective foot and mouth disease (FMD) control measures. One approach to obtaining this information is through bioeconomic modelling. In this study, a bioeconomic model was used to evaluate FMD control in two different study areas in Thailand: a high farm density area predominantly consisting of dairy farms and a low farm density area with mixed farm types.

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  • Tetrapyrroles like heme, chlorophyll, and vitamin B are crucial for metabolic processes and are derived from 5-aminolevulinic acid (5-ALA), which can be synthesized via a single enzyme or a two-enzyme pathway.
  • Researchers analyzed metagenomic datasets to find alaS homologs (valaS) in marine and freshwater phages, indicating these viruses may have genes for tetrapyrrole biosynthesis.
  • The study demonstrates that a freshwater phage valaS can functionally complement a 5-ALA deficient E. coli strain, confirming its role as an auxiliary metabolic gene and highlighting the significance of tetrapyrrole metabolism in phage biology.
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Unlocking the potential of fermented beetroot ketchup: Enhancing polyphenol recovery and gut microbiota interactions.

Food Chem

January 2025

Department of Food Gastronomy and Food Hygiene, Warsaw University of Life Sciences, Institute of Human Nutrition, Nowoursynowska Str. 159C, 02-776 Warsaw, Poland. Electronic address:

The study aimed to evaluate the effect of digestion and gut microbiota interactions on beetroot ketchup formulations, focusing on the release of polyphenols, bioaccessibility, and microbial interactions on gut microbiota with polyphenols. Tested ketchup samples were evaluated using the TNO Gastro-Intestinal Model 1 (TIM-1) simulated upper part of the gastrointestinal tract and the TNO Gastro-Intestinal Model 2 (TIM-2) simulated colon system. The results showed that fermentation of ketchup with Lactobacillus johnsonii K4, increased the release of bioactive compounds during digestion, with higher polyphenol recoveries observed in fermented samples.

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