Abstract:
The expression vector includes: the nucleic acids coding for the polypeptides forming a polypeptide complex having an enzyme activity allowing acetoacetyl-CoA to be converted to acetoacetate; optionally, at least one nucleic acid coding for a polypeptide having an enzyme activity allowing acetoacetate to be converted to acetone; and at least one nucleic acid coding for a polypeptide having an enzyme activity allowing acetone to be converted to isopropanol; the expression of the nucleic acids being controlled by a single constitutive promoter located upstream of the abovementioned nucleic acids.
Abstract:
The invention relates to methods for producing a propagation-competent strain of a mutant Reoviridae virus, and to a propagation-competent strain of a mutant Reoviridae virus that is obtainable by a method of the invention. The invention further relates to a propagation-competent strain of a mutant Reoviridae virus, comprising a deletion of a genetic region that is relevant for propagation of the virus, and to a vaccine, comprising a propagation-competent strain of a mutant Reoviridae virus.
Abstract:
A method for determining the vase life or storage history of one or more cut flowers, wherein the method comprises assaying a test sample obtained from the one or more cut flowers for one or more of: (a) an indicator representative of xylose concentration; (b) an indicator representative of β-xylosidase expression; and (c) an indicator representative of β-xylosidase activity; to determine a value for (each of) the one or more indicators in the test sample.
Abstract:
Disclosed is a method of making 5-formyl-2-furoic acid and furan-2,5-dicarboxylic acid. The method involves the use of 5-keto-aldonic acids as intermediates, as these can be subjected to ring formation by a cyclodehydration reaction under mild conditions. The 5-formyl-2-furoic acid or carboxylic derivative thereof is subjected to oxidation so as to form furan-2,5-dicarboxylic acid. The 5-keto-aldonic acid intermediates can be obtained by isomerization of uronic acids which can be obtained from sugar beet pulp, chicory pulp, fruit peals including orange peels, or non-terrestrial sources like seaweeds. A preferred source is sugar beet pulp.
Abstract:
Disclosed is the oxidation of uronic acids, such as galacturonic acid, to the corresponding aldaric acids (characterized by the formula HOOC—(CHOH)n-COOH, with n being an integer of from 1 to 5) such as galactaric acids. The starting material comprising the uronic acid is subjected to oxygen under the influence of a supported gold catalyst and in the presence of a base. The oxidation occurs in good selectivity and yield, under unexpectedly mild conditions. A source of galacturonic acids is pectin, such as that derived from sugar beet pulp.
Abstract:
Plasticized, unpigmented and pigmented PVC films are described which utilize a biobased, phthalate ester alternative primary plasticizer. The films show comparable color performance to the phthalate ester-plasticized unpigmented or pigmented PVC films, even where the neat biobased plasticizer has a much higher Pt—Co color as measured according to DIN-6271 (ASTM D 1209) compared to the neat phthalate ester plasticizer. Biobased primary plasticizers in the form of diesters of furan-2,5-dicarboxylic acid are especially contemplated, and provide increased thermal stability to the PVC films as an added benefit.
Abstract translation:描述了增塑的,未着色的和着色的PVC膜,其利用生物基邻苯二甲酸酯替代的主要增塑剂。 与邻苯二甲酸酯类相比,即使在纯生物基增塑剂具有比DIN-6271(ASTM D 1209)测量的Pt-Co颜色高得多的情况下,该胶片显示出与邻苯二甲酸酯增塑的未着色或着色的PVC膜相当的颜色性能。 增塑剂 特别考虑了呋喃-2,5-二羧酸二酯形式的基于生物的初级增塑剂,并为PVC膜提供了增加的热稳定性,作为额外的益处。
Abstract:
Disclosed is a method of making 5-formyl-2-furoic acid and furan- 2,5-dicarboxylic acid. The method involves the use of 5-keto-aldonic acids as intermediates, as these can be subjected to ring formation by a cyclodehydration reaction under mild conditions. The 5-formyl-2-furoic acid or carboxylic derivative thereof is subjected to oxidation so as to form furan-2,5-dicarboxylic acid. The 5-keto-aldonic acid intermediates can be obtained by isomerization of uronic acids which can be obtained from sugar beet pulp, chicory pulp, fruit peals including orange peels, or non- terrestrial sources like seaweeds. A preferred source is sugar beet pulp.
Abstract:
A catalytic method is disclosed for the valorization of lignin. The method comprises subjecting lignin to a catalyzed hydrothermal conversion reaction, said reaction being conducted in the presence of water at an alkaline pH > 8 and a temperature of 200°C-300°C, under the influence of a noble metal catalyst comprising a carbon support. The same reaction can also be applied to subsequently defunctionalize one or more phenolic compounds, notably guaiacol, so as to produce six-membered cyclic hydrocarbons, such as phenol.
Abstract:
The invention relates to a stamp for making a microarray of biomolecules, wherein the stamp comprises a stamp body comprising: a stamping surface for stamping the biomolecules onto a substrate; a plurality of reservoirs for liquids comprising the biomolecules, wherein each of the reservoirs has a bottom wall and; a plurality of channels extending between each of the bottom wall and the stamping surface, wherein each of the reservoirs and the channels comprises a macroporous hydrogel and wherein the stamping surface is provided with a hydrophobic coating.
Abstract:
Method of mechanically milking a lactating animal, such as a cow, a goat and a sheep, comprising: · providing an animal having at least one teat (110), said teat comprising an elongate shaft (112) and a teat end (114) at an end of said shaft, said teat end comprising a teat canal (116) having an external orifice (118); · milking the teat (110) by repeatedly alternatingly increasing and decreasing a diameter (D) of at least a longitudinal portion of its shaft (112), while maintaining a substantially axi-symmetric shape of said portion of the shaft, and while continuously applying a milking vacuum to the teat end (114) so as to extract milk from the external orifice (118) of the teat canal (116). Also disclosed is a teat cup liner for practicing the disclosed method.