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  • International Phycological Society  (2)
  • Elsevier  (1)
  • Food and Agriculture Organisation of the United Nations (FAO)  (1)
  • 1
    Publication Date: 2014-11-11
    Description: Publication date: Available online 4 November 2014 Source: International Journal of Production Economics Author(s): Klaus Reinholdt Nyhuus Hansen , Martin Grunow Shorter product life cycles and the resulting increase in new product introductions boost the importance of product launch operations. In the pharmaceutical sector, product launch operations are of particular importance, as companies seek to reduce time-to-market to better exploit patent protection. Large volumes of product need to be ready to fill the downstream supply chain immediately at market launch. Building up the required inventory is, however, connected to several risks. In addition to the risk associated with the lack of demand information for a new product, there are several risks unique to the pharmaceutical sector. After approval by central authorities such as the FDA or EMA, a new drug still needs to receive market authorization, which is in most cases granted by some local authorities - in Europe, for example, by more than 30 national and regional bodies. The duration of these different market authorization processes as well as their outcomes (e.g. price and reimbursement levels, requirements of label or leaflet changes) are highly uncertain. We develop a two-stage stochastic model to support market launch preparation decisions. It trades off the costs of accepting these risks, for example by risk packaging before authorization, against the lost revenue caused by risk-averse operations. The model is applied to a case based on an empirical study. Our approach results in significant savings compared to current practices. We hereby provide an example of how quantitative methodology can provide valuable decision support for product launch operations, even when complex regulatory affairs need to be considered.
    Print ISSN: 0925-5273
    Electronic ISSN: 1873-7579
    Topics: Technology , Economics
    Published by Elsevier
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  • 2
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    International Phycological Society
    In:  Phycologia, 52 (4, Supplement). p. 119.
    Publication Date: 2019-09-23
    Description: To evaluate the importance of anti-herbivore resistance for algal invasion success we compared resistance traits among specimens of the red macroalga Gracilaria vermiculophylla from six native populations in Korea and China and eight invasive populations in Europe and Mexico that were maintained under identical conditions in the laboratory. Herbivorous snails both from the native range (Littorina brevicula) and from the invaded range (Littorina littorea) consumed significantly less of seaweed specimens originating from non-native populations. Metabolome profiling revealed that this preference was correlated with an increased woundactivated production of deterring prostaglandins and hydroxyeicosatetraenoic acids. Thus, invasive populations of G. vermiculophylla are more strongly defended against challenge by herbivores and other biological enemies that cause local tissue or cell disruption and activate oxylipin production. Anthropogenic distribution of genotypes adapted to resist elevated feeding pressure probably contributed to the invasion success of this species.
    Type: Article , PeerReviewed
    Format: text
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  • 3
    Publication Date: 2019-09-23
    Description: Grazing by the isopod Idotea baltica induces chemical defenses in the brown seaweed Fucus vesiculosus. A combination of a 33 day induction experiment, feeding choice assays and functional genomic analyses was used to investigate temporal defense patterns and to correlate changes in palatability to changes in gene expression. Despite permanent grazing, seaweed palatability varied over time. Controls were significantly more consumed than grazed pieces only after 18 and 27 days of grazing. Relative to controls, 562/402 genes were up-/down-regulated in seaweed pieces that were grazed for 18 days, i.e. when defense induction was detected. Reprogramming of the regulative expression orchestra (translation, transcription), up-regulation of genes involved in lipid and carbohydrate metabolism, intracellular trafficking, defense and stress response, as well as downregulation of photosynthesis was found in grazed seaweed. These findings indicate short-term temporal variation in defenses and that modified gene expression patterns arise at the same time when grazed seaweed pieces show reduced palatability. Several genes with putative defensive functions and cellular processes potentially involved in defence, such as reallocation of resources from primary to secondary metabolism, were revealed
    Type: Article , PeerReviewed
    Format: text
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  • 4
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    Food and Agriculture Organisation of the United Nations (FAO)
    Publication Date: 2023-06-29
    Description: The contamination of the environment with whole plastics or pieces thereof (microand nanoplastics) is the subject of extensive discussion nowadays in academia and the media. In addition to environmental matrices, micro- and nanoplastics have been detected in fishery products and other important food commodities, with concerns over their impact on human health. Food consumption is considered one of most significant routes of human exposure to these small plastic particles. Such concerns may arise not only from the exposure to reactive monomers in the otherwise biologically inert polymer structure, but also from their associated contaminants. Many studies have reported neurotoxicity, oxidative stress and immunotoxicity among the main consequences of exposure to micro- and nanoplastics. This document outlines the existing literature on the occurrence of microplastics and their associated contaminants in foods. It estimates the dietary exposure of consumers to these materials, highlights some knowledge gaps with respect to their relevance to public health, and offers some recommendations for future work on microplastic particles to support food safety governance.
    Type: Report , NonPeerReviewed
    Format: text
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