Aceleración del proceso de compostaje de residuos post-cosecha (pulpa) del café con la aplicación de microorganismos nativos.

Colombia, as a leading exporter of coffee smooth, in 2008 produced an average of 12 524 thousand bags of coffee, each 60 kg, of which 3 005 tones are coffee cherry, these large volumes produced post-harvest, are considered contaminants. These products can be used to produce organic fertilizer. The traditional composting process takes about 150 days because of that the decreasing time to 40 days, it is proposed. Isolation of microorganisms from a pre-enrichment in a basal medium cherry Saline (MBS) to obtain axenic cultures, were identified and tested for compatibility between the consortia to select strains tested. Four 4 biopiles were made with a weight of 175 kg each one and one control. They were inoculated by spraying with a concentration of 3 x 10 7 CFU/mL during 10, 20 and 30 days, with monitoring of physical parameters. They were isolated and identified 8 strains: Pseudomonas aeruginosa, Citrobacter koseri, Bacillus sp, Escherichia coli, Stenotrophomona maltophilia, Cromobacterium spp, Pseudomonas spp. The carbon-nitrogen (C/N) ratio in the stack 1 (9.6 %), in the stack 2 (10 %), and the pile 4 (9.5 %) fulfilled the established values (< 20 %), showing maturity and sanitary quality with low levels of fecal coliform and total absence of Salmonella. The results in 40 days allowed a compost that meets the parameters established by the Colombian technical standard (5167 NTC, 2004). [ABSTRACT FROM AUTHOR]