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Unravelling migration connectivity reveals unsustainable hunting of the declining ortolan bunting
In France, illegal hunting of the endangered ortolan bunting Emberiza hortulana has been defended for the sake of tradition and gastronomy. Hunters argued that ortolan buntings trapped in southwest France originate from large and stable populations across the whole of Europe. Yet, the European Commission referred France to the Court of Justice of the European Union (EU) in December 2016 for infrin
Molecularly imprinted microspheres as antibody binding mimics
Molecular imprinting is an emerging technique for preparing artificial antibodies that have potential applications in affinity-based separations, biomimetic sensors and assays. The conventional imprinting methods either deliver a monolith that is mechanically ground to irregular particles - a time-consuming process with low yield, or involves complicated polymerization process by which spherical b
Development of a flow injection capillary chemiluminescent ELISA using an imprinted polymer instead of the antibody
A flow injection competitive assay analogous to enzyme immunoassays has been developed using a molecularly imprinted polymer instead of the antibody. A glass capillary was modified by covalently attaching an imprinted polymer to the inner capillary wall. The herbicide 2,4-dichlorophenoxyacetic acid was used as a model analyte. The analyte was labeled with tobacco peroxidase, and chemiluminescence
Chemiluminescence imaging ELISA using an imprinted polymer as the recognition element instead of an antibody
An imaging assay analogous to competitive enzyme immunoassays has been developed using a molecularly imprinted polymer instead of an antibody. The antigen 2,4-dichlorophenoxyacetic acid (2,4-D) was labeled with tobacco peroxidase, and the chemiluminescence reaction of luminol was used for detection. Microtiter plates (96 or 384 wells) were coated with polymer microspheres imprinted with 2,4-D, whi
Towards the development of molecularly imprinted artificial receptors for the screening of estrogenic chemicals
Molecularly imprinted polymers are prepared using various steroid compounds as the templates. The imprinted polymers can selectively re-bind the original print molecules, which leads to versatile potential applications. The feasibility of using these artificial receptors to replace their biological counterparts for preliminary screening of a chemical library is demonstrated. A steroid library comp
Regional fisheries management organisations and their efforts and measures to regulate fishing activities
New configurations and applications of molecularly imprinted polymers
Molecularly imprinted polymers (MIPs) are applicable in a variety of different configurations. For example, bulk polymers imprinted with β-lactam antibiotics are presented to be used as stationary phases for the chromatographic separation of β-lactam antibiotics with both aqueous and organic mobile phases. However, in some analytical applications, monosized spherical beads are preferred over the c
An enzyme-linked molecularly imprinted sorbent assay
Based on a molecularly imprinted polymer, a competitive binding assay analogous to competitive enzyme immunoassay has been developed. The assay is specific for the herbicide 2,4-dichlorophenoxyacetic acid and uses, for the first time, an enzyme-labelled conjugate as a tracer. The label tobacco peroxidase allowed for colorimetric and chemiluminescence detection. The molecularly imprinted polymer wa
Use of molecularly imprinted polymers in a biotransformation process
Molecularly imprinted polymers are highly stable and can be sterilised, making them ideal for use in biotransformation process. In this communication, we describe a novel application of molecularly imprinted polymers in an enzymatic reaction. The enzymatic condensation of Z-L-aspartic acid with L-phenylalanine methyl ester to give Z-L-Asp-L-Phe-OMe (Z- aspartame) was chosen as a model system to ev
Molecularly imprinted monodisperse microspheres for competitive radioassay
In the present study, molecularly imprinted affinity sorbents against theophylline and 17β-estradiol are synthesised via precipitation polymerisation, a synthetic method that yields monodisperse, spherical polymer particles in the micronscale range, quickly, cleanly and in good yield. The specific binding sites that are created during the imprinting process are analysed via radioligand binding ana
A new application of molecularly imprinted materials
We have studied the possibility of shifting a thermodynamically unfavourable enzymatic equilibrium towards product formation via the addition of a highly specific adsorbent. The commercially interesting enzymatic condensation of Z-L-aspartic acid with L-phenylalanine methyl ester to the sweetener aspartame was chosen as the model system. Extremely stable and specific adsorbents for the product Z-L
Applications of molecularly imprinted materials as selective adsorbents : Emphasis on enzymatic equilibrium shifting and library screening
Molecular imprinting is an attractive method for producing highly selective adsorbents, and several new and potentially useful applications based on molecularly imprinted polymers (MIPs) have been described in recent years. In this article, we highlight some of the areas where these materials have found application, and also describe some new fields of application where the selectivities of imprin
Chiral recognition by molecularly imprinted polymers in aqueous media
Molecularly imprinted polymers were prepared using 2-vinylpyridine and/or methacrylic acid as functional monomers in a self-assembly imprinting protocol. The resulting polymers were analyzed in aqueous media, and the effects from the pH of the mobile phase and the degree of added organic solvent were investigated. The results are indicative of the importance of ionic bonds in conjunction with hydr
Molecularly Imprinted Polymeric Adsorbents for Byproduct Removal
In this study, both diastereo- and enantioselective adsorbents for a dipeptide derivative were prepared using a molecular imprinting technique. The diastereo- and enantioisomers for the dipeptide derivative N-(benzyloxy-carbonyl)aspartylphenylalanine methyl ester (ZAPM), in addition to the α- and β-isomers, were chosen as test compounds for the investigation of the imprinting effect The close simi
Screening of a combinatorial steroid library using molecularly imprinted polymers
Molecular imprinting is an attractive method for producing highly selective adsorbents, and several new and potentially useful applications based on molecularly imprinted polymers (MIPs) have been described in recent years. In this article, we introduce a new field of application in which the selectivities of imprinted materials can be gainfully employed as binding matrices in the screening of com
Generation of new enzyme inhibitors using imprinted binding sites : The anti-idiotypic approach, a step toward the next generation of molecular imprinting
The technique of molecular imprinting : Principle, state of the art, and future aspects
Molecular imprinting has gained increasing research interest during the past few years. In this overview we would like to explain to the readers how a seemingly simple concept can eventually lead to useful applications in several areas. The main focus will be on the present state of the art of molecular imprinting, as several breakthroughs have occurred since most reviews by us and other groups ha
