摘要:
A method for improving a cell biomass includes de-ashing the cell biomass by applying pulsed electric field (PEF)- or constant electric field (CEF)-treatment to the cell biomass in a solvent, optionally under pressure higher than the ambient pressure, to thereby extract an ash fraction from the cell biomass into the solvent.
摘要:
Methods for the production of unicellular photosynthetic organisms capable of producing cell adhesion proteins are disclosed. DNA constructs as well as methods for integration of the DNA constructs into the genomes of unicellular photosynthetic organisms for the expression of cell adhesion proteins are also disclosed.
摘要:
Methods for selective extraction and fractionation of algal proteins from an algal biomass or algal culture are disclosed. A method of selective removal of products from an algal biomass provides for single and multistep extraction processes which allow for efficient separation of algal proteins. These proteins can be used as renewable sources of proteins for animal feedstocks and human food. Further, lipids remaining in the algal biomass after extraction of proteins can be used to generate renewable fuels.
摘要:
The present invention uses aerosol beam technology to accelerate either wet or dry aerosol particles to speeds enabling the particles to penetrate living cells. Aerosol particles suspended in an inert gas are accelerated to a very high velocity during the jet expansion of the gas as it passes from a region of higher gas pressure to a region of lower gas pressure through a small orifice. The accelerated particles are positioned to impact a preferred target, for example, a plant or animal cell or bacterial culture. When the droplets include DNA or other macromolecules, the macromolecules are introduced into the cells. The particles are constructed as droplets of a sufficiently small size so that the cells survive the penetration. Once introduced into the target cell the macromolecules can elicit biological effects. Because the method of introduction is a physical one, the biological barriers that restrict the application of other DNA transfer methods to a few plant species and a few cell types are not present. In addition, the method and apparatus of the present invention permit the treatment of a large number of cells in the course of any single treatment. Thus, the inventive method and apparatus should be applicable to a wide range of plant species and cell types that have proved in the past to be quite impervious to standard methods of genetic engineering.
摘要:
A method is for the extraction of a phytochemical, e.g., peptide or protein, or a chemical element from a macroalgae, by applying pulsed electric field (PEF)- or continuous electric field (CEF)-treatment to the macroalgae in a solvent, under pressure higher than the ambient pressure. A device and system carry out this method.
摘要:
Disclosed herein are polysaccharides extracted from marine algae and an antiviral drug containing as active ingredient polysaccharides extracted from seaweeds.