191 results about "Stenotrophomonas maltophilia" patented technology

The invention relates to a nitrogen fixation stenotrophomonas maltophilia C4Y41 strain and an application thereof. The strain is stored in the common microorganism center of China microorganism strain management committee and has a storage number of CGMCC No.3349. The strain is a new nitrogen fixation strain obtained by applying a general microorganism-separating and purifying method on podocarpus root nodules, has the nitrogen fixation enzyme activity of 0.019-0.030nmol*g-1*h-1 and enables the height of inoculated eucalyptus seedlings to increase by 2.20-22.12 percent, the ground diameter to increase by 22.15-36.84 percent, the average biomass to increase by 40.47-60.81 percent, the chlorophyll content to increase by 12.68-34.07 percent and the nitrate reductase activity to increase by 21.82-36.69 percent. The strain can be applied as a biological fertilizer for stimulating the growth of the eucalyptus seedlings.

The invention discloses the application of Stenotrophomonas maltophilia Hilia DS4 for degrading organic pollutants in saponin waste water. The Stenotrophomonas maltophilia Hilia DS4 strain is preserved in China Center for Type Culture Collection with preservation number CCTCC No. M2010147. The Stenotrophomonas maltophilia Hilia DS4 strain has strong capability of growing in high-concentration sulfate ion environments and good ability of removing organic pollutants from saponin waste water. The strain can reduce the COD (chemical oxygen demand) of the saponin waste water by 2930 mg / L within 72 hours, with high removal efficiency up to 62.34%. The invention provides a useful bacterial source for degrading high-concentration organic pollutants in saponin waste water, increases the application range of Stenotrophomonas maltophilia Hilia, and has a high application value.

Drug delivery systems for delivering agents capable of reducing the quantity of residual antibiotics reaching the colon following oral or parenteral antibiotic therapy, and for delivering metallo-dependent enzymes, and methods of using the drug delivery systems, are disclosed. The drug delivery systems include pectin beads that encapsulate the active agent (which can be a metallo-dependent enzyme), where the pectin is crosslinked with zinc or any divalent cation of interest and the pectin beads are coated with Eudragit®-type polymers. The drug delivery systems are orally administrable, but can deliver the active agents to the colon. In some embodiments, they can administer the agents to various positions in the gastro-intestinal tract, including the colon. One metallo-dependent enzyme is the β-lactamase L1 from Stenotrophomonas maltophilia, and agents that inactivate macrolide, quinolone, fluoroquinolone or glycopeptide antibiotics can also be used. The delivery of the active agent can be modulated to occur at various pre-selected sites of delivery within the intestinal tract by gelling / crosslinking a mixture of the active agent, such as a metallo-dependent enzyme, and pectin, with divalent metallic cations such as Ca+2 or Zn+2. A stable metallo-dependent enzyme formulation can be delivered to the lower intestine or colon. The use of zinc cations to crosslink the pectin is particularly preferred when specific metallo-dependent enzymes, which are Zn2+ dependent, could interact with other cationic species if they were used to gel the pectin beads and thus adversely affect the activity of such metallo-dependent enzymes.

The invention discloses a cellulose degradation composite microbial inoculum with low-temperature resistance as well as a preparation method and an application of the cellulose composite microbial inoculum. The cellulose degradation composite microbial inoculum with low-temperature resistance comprises effective components of flavobacterium johnsoniae and stenotrophomonas maltophilia in a weight ratio of (0.5-1.51): 1, and the total effective viable count in the cellulose degradation composite microbial inoculum with low-temperature resistance is 3*10<9> CFU / g or more. The cellulose degradation composite microbial inoculum with low-temperature resistance can be further applied to in-situ degradation and returning to the field of t straws due to efficient degradation of cellulose such as crop straws at low temperature. The composite microbial inoculum can solve the problems of low cellulose degradation rate and long period in the low temperature environment in northern China.

The invention discloses an efficient remediation compound microbial agent for cultivated soil. The efficient remediation compound microbial agent is prepared from a bacteria solution prepared by fermenting a compound microbial agent, and a compound adsorption carrier, wherein the mass ratio of the bacteria solution to the compound adsorption carrier is (0.01 to 0.2) to (1 to 2); the viable count is 22 to 86 million per gram; the microbial agent is prepared from bacillus megatherium, bacillus cereus, stenotrophomonas maltophilia and pseudomonas putida; the compound adsorption carrier is prepared from crop straw, active carbon and diatomite. Bacteria solutions of the bacillus megatherium, the bacillus cereus and the stenotrophomonas maltophilia are combined together, and the four bacteria facilitate one another, so that remediation of the soil can be finished more efficiently, pollution on soil suffering from heavy metal pollution and organic chemical product pollution can be eliminated rapidly, soil productivity is improved, and the remediation efficiency is increased. By adopting the compound adsorption carrier, the limit of a single carrier is overcome, the service life of a strain is prolonged, and the service cycle of the strain is prolonged.