4 results about "Cyanobacterin" patented technology

This invention relates to the field of resource and environmental technology, specifically to a method and application of an algae-bacteria hybrid system for treating high ammonia nitrogen wastewater. By regulating nutrient and operational parameters, a functional community is constructed and maintained, dominated by microalgae and supplemented by bacteria and cyanobacteria, with their relative abundance within a preset optimized range. A clear interspecific interaction network forms within the system: microalgae such as *Nostoc* and *Chlorella* exhibit mutualistic symbiosis, while bacteria such as *Flavobacterium* show antagonistic relationships with these microalgae. Positive and negative feedback mechanisms maintain community balance and system robustness. The three components complement each other: microalgae primarily drive photocatalytic nitrogen and phosphorus removal, cyanobacteria provide nitrogen fixation and stability, and functional bacteria participate in organic matter degradation and nitrogen cycling, achieving synergistic metabolism through material exchange. Microbial ecological analysis confirms that a stable community structure and internal interaction mechanisms are the core of efficient and stable ammonia nitrogen reduction. This technology offers precise regulation, stable operation, and is environmentally friendly and economical, and can be widely applied to the treatment of various types of ammonia nitrogen-polluted water bodies.

There is provided an immunogenic composition comprising or consisting of a recombinant Cyanobacteria or lysate thereof wherein the recombinant Cyanobacteria comprises a nucleic acid encoding at least one VLP and at least one heterologous antigen, wherein the expressed VLP comprises the at least one heterologous antigen.

This invention relates to a method for cultivating cyanobacteria to control protozoa, comprising the following steps: culturing cyanobacteria to the logarithmic growth phase to obtain a first microalgal culture; encapsulating the first microalgal culture in a polymer to obtain microalgal beads; inoculating the microalgal beads into a liquid culture medium for production cultivation to obtain a second microalgal culture; and when the second microalgal culture is contaminated by protozoa, separating the microalgal beads from the second culture and inoculating them into a liquid culture medium for production cultivation. This invention uses sodium alginate to encapsulate microalgae to control biocontamination, and the method also provides significant process advantages. Under static conditions, the rapid settling of the microalgal beads greatly simplifies biomass harvesting, eliminating the energy-intensive centrifugation step typically required for free cyanobacterial cells. This physical protection platform provides a scalable and environmentally sustainable solution to the persistent challenge of microbial contamination in large-scale cyanobacterial biofuel production.

This invention belongs to the interdisciplinary field of biomedicine and nanomaterials, specifically disclosing an engineered cyanobacteria-nanodiamond composite, its preparation method, and its applications. The composite includes genetically modified engineered cyanobacteria capable of stably synthesizing and secreting photosensitizers, and red fluorescent nanodiamonds containing nitrogen-vacancy centers that emit fluorescence at 600-750 nm under ≥532 nm light excitation. The nanodiamonds are loaded onto the surface of the cyanobacteria or into the extracellular matrix. This invention integrates the in-situ oxygen production / photosensitizer production function of cyanobacteria with the deep fluorescence emission characteristics of nanodiamonds, synergistically alleviating tumor hypoxia and enhancing deep photodynamic therapy. It exhibits good biocompatibility, controllable preparation, and broad application prospects in the treatment of solid tumors.