Abstract:
Polyclonal antibodies can be produced that reacts with recombinant EPO and its degradation products but not with native EPO. This antibody precipitation can be used to identify those glycopeptides that are uniquely reactive. These glycopeptides can be produced on preparative scale and used in the production of monoclonal antibodies which are screened against the original EPO and glycopeptides to select antibodies reactive to the specific glycopeptides an recombinant EPO but not to native human EPO. The monoclonal antibodies so selected are incorporated in a conventional ELISA and used to monitor urine and other bodily samples taken from athletes, either human or animal, and patients for presence and level of recombinant peptides or proteins. Alternatively, the polyclonal antibody can be used directly to produce ELISA test.
Abstract:
This patent application is for the use of acetic nitric reagent (80% acetic acid, 1.8 N nitric acid) for the extraction of oligosaccharides and polysaccharides from carbohydrate containing materials. The material is extracted with the acetic nitric reagent in a boiling water bath for various periods of time, usually 30 minutes. The material is then centrifuged and the clear, yellowish, supernatant is then taken to dryness in a Speed Vac under reduced pressure. The dry residue is then taken up in water and centrifuged to remove particulates. The resulting supernatant is then analyzed by high pH anion exchange chromatography with integrated amperometric detection. The resulting chromatogram or the integrated areas under the peaks are then characteristic for that particular source of material. This method is useful for analysis of cotton fibers, wood, paper, textiles or any cellulosic material. This method is an additional method utilized to characterize these materials as described in US Patent No. 06562626B1 Method for Monitoring Textile Fiber Quality, Analysis and Identification of Paper, Wood and Other Cellulose Containing Materials and US Patent Application Publication US20040152201A1, Method for Monitoring Textile Fiber Quality, Analysis and Identification of Paper, Wood, Grains, Foods and Other Cellulose Containing Materials Using Glycan Oligomer Analysis (Allen K. Murray). The acetic nitric reagent is used in addition to the dilute HCI extraction as described in the cited patent and patent application.
Abstract:
This patent application is for the use of acetic nitric reagent (80% acetic acid, 1.8 N nitric acid) for the extraction of oligosaccharides and polysaccharides from carbohydrate containing materials The material is extracted with the acetic nitric reagent in a boiling water bath for various periods of time, usually 30 minutes The material is then centrifuged and the clear, yellowish, supernatant is then taken to dryness in a Speed Vac under reduced pressure, The dry residue is then taken up in water and centrifuged to remove particulates The resulting supernatant is then analyzed by high pH anion exchange chromatography with integrated amperonetric detection The resulting chromatogram or the integrated areas under the peaks are then characteristic for that particular source of material.
Abstract:
Specific extraction of the oligomers from cotton fibers can be: achieved by a 24-hr incubation at 37°C with trypsin, chymotrypsin, proteinase K or pepsin, followed by a second 24-hr incubation at 37°C with cellulase (Trichoderma reesei) or ß-glucosidase. Alternatively, samples were first subjected to cellulase or ß-glucosidase treatment followed by the protease. The residual material is then treated with 0.5N HCI at 100°C and the extracts analyzed. Fibers treated with cellulase: followed by protease disintegrated and appeared as a cloudy solution, while the fibers treated with protease followed by cellulase retained their structural identity. This analysis reveals striking differences between cotton fibers from different varieties with respect to their susceptibility to enzymatic degradation. This protocol can be used to identify biochemical characteristics, which can then be correlated with genetic markers for advances in plant breeding.
Abstract:
Specific extraction of the oligomers from cotton fibers can be: achieved by a 24-hr incubation at 37°C with trypsin, chymotrypsin, proteinase K or pepsin, followed by a second 24-hr incubation at 37°C with cellulase (Trichoderma reesei) or ß-glucosidase. Alternatively, samples were first subjected to cellulase or ß-glucosidase treatment followed by the protease. The residual material is then treated with 0.5N HCI at 100°C and the extracts analyzed. Fibers treated with cellulase: followed by protease disintegrated and appeared as a cloudy solution, while the fibers treated with protease followed by cellulase retained their structural identity. This analysis reveals striking differences between cotton fibers from different varieties with respect to their susceptibility to enzymatic degradation. This protocol can be used to identify biochemical characteristics, which can then be correlated with genetic markers for advances in plant breeding.
Abstract:
A method of analyzing cell wall components based on a hot dilute acid extraction, followed by alcohol precipitation, of plant cellulosic materials such as cotton fibers or wood pulp. The extracts are analyzed by high pH anion exchange chromatography to separate and characterize the carbohydrates. This method extracts a characteristic series of carbohydrate multimers containing galactose, mannose and glucose. The pattern of multimers is indicative of origin of the cellulosic material ( e.g. , the plant species the material comes from) as well as quality and processing state of the material. The alcohol precipitation improves the discriminating powers of the analysis so that the species of origin of plant products can be identified.
Abstract:
A method of detecting environmental stress in plants, particularly water stress in cotton plants is based on a cold water extraction of plant tissues such as cotton fibers. The extract is analyzed by high pH anion exchange chromatography to separate and characterize the saccharides, oligosaccharides and other glycoconjugates extracted by cold water. The extracted carbohydrates represent a uniquely sensitive means to detect environmental stress. Environmentally stressed plants show both a qualitative and quantitative alteration of the extracted carbohydrates. The alteration in extracted carbohydrates can be used to indicate when additional irrigation or other correction to the growth conditions is required.