Microbial inoculants

Cheng et al. (2006) incubated for four months black C and black C-soil mixtures at 30 °C and 70 °C, with and without microbial inoculation, nutrient addition, or manure amendment. Incubation caused a decrease in pH from 5.4 to 5.2 and 3.4, as well as an increase in cation exchange capacity by 53% and 538%, respectively. Surface formation of carboxylic functional groups was the reason for the enhanced CEC during oxidation. 

Whiter, A.G. (2004) The effects of buffered propionic acid-based additives alone or combined with microbial inoculation on the fermentation of high moisture com and whole-crop barley. Journal of Dairy Science 87 1310-1316. 

Song X Y,Song Y F,Sun T H,et al, "Limited effect of introduced microbial inoculants in... 

A binary. system. The core was viscous microorganism suspension while the coating was alginate gel cro.s.slinked by Ca-+. Fast degradation ( 1 hr) in (NH4)9C0 and NagCOj solution. Microbial inoculants. Digitt, 1993... 

Digat, B. A new bioeiicapsulation technology for microbial inoculants. Biomat., Art. Cells crlmmob. Biotech., 21 (1993) 299-306. 

A further type of microbial inoculant v/hich has been considered is the phosphate-solubilizing bacteria. Of 50 phosphate-dissolving bacteria isolated from the rhizospheres of crop plants, tv/enty synthesized lAA, gibberellins and... 

S. D. Siciliano and J. J. Germida, Biolog analysis and fatly acid methyl ester profiles indicate that pseudormonad inoculants that promote phytoremediation alter the root-as.sociated microbial community of Bromus hiehersteinii. Soil Biol. Biochem. 30 1717 (1998). 

With the extraction procedure we employed (22), ferulic acid was isolated as the most inhibitory component in wheat straw. There could also be other unknown compounds in the straw which would not be evident with this procedure. In addition, we ignored the possible influence of toxin-producing microorganisms. Microorganisms may have influenced the phytotoxicity exhibited by the aqueous wheat extract in Table IX. Although the present study was not concerned with the phytotoxic effects of microbially decomposed wheat straw, an influence of microbial activity on ferulic acid phytotoxicity was observed. From the results shown in Table XI, it appears that the presence of the prickly sida seed carpel enhanced the inhibitory effects of ferulic acid. In addition to ferulic acid in test solutions containing prickly sida seeds with carpels, a second compound, 4-hydroxy-3-methoxy styrene, was also found to be present. This compound is formed by the decarboxylation of ferulic acid and was produced by a bacterium present on the carpel of prickly sida seed. The decarboxylation of ferulic acid was detected in aqueous solutions of ferulic acid inoculated with the bacterium isolated from the carpels of prickly sida seed. No conversion occurred when the bacterium was not present. 

A bioslurry phase system consists of the suspension of a solid phase in water or other liquid medium to a concentration typically between 5% and 40% (w/v) and kept under agitation conditions to allow the microbial growth of the indigenous microbiota or a particular inoculated microorganism [114], Bioslurry systems for bioremediation purposes have been mostly conducted with bacterial cultures [146, 147], although in the last few years WRF were also successfully applied to soil bioremediation of PAHs, hexachlorocyclohexane and pentachlorophenol [110, 113, 114],... 

The second patent describes the use of a microbial mixed culture (Hansenula sydowiorum, Hansenula ciferrii, Hansenula lynferdii, and/or Cryptococcus albidus) in coal desulfurization [160], In this process, the raw mined coal is ground to a particle size smaller than 200 mesh forming a slurry with water, at a solids concentration of less than 40wt%. The bacterial cultures are then inoculated into the feedstock slurry. An incubation step is carried out at a temperature near 25°C and at a pH close to neutral. The highest removal achieved was in the range of 46% S removal. 

Lebeau et al. (2002) investigated the sorption of cadmium by viable microbial cells that were free or immobilized in alginate beads by incubating the bacteria in a liquid soil extract medium at pH 5 7 and Cd concentrations of 1 to 10 mg L-1. The percentage of Cd biosorbed reached a maximum (69%) at low Cd concentrations and neutral pH. Thus, the effectiveness of bacteria, inoculated into metal-contaminated soils, would largely depend on the concentration of the metal and its distribution between the biomass and the medium. 

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