OPTIMIZATION OF ANAEROBIC DIGESTION FOR PRODUCTION OF BIOFERTILIZER-BIOFUNGICIDE TO BIOCONTROL Mycosphaerella fijiensis
The aim of this research was to optimize the production a novel organic biofertilizer with fungicidal effect in a continuous anaerobic bioreactor optimizing the main operational parameters that control the anaerobic digestion process. A 2 4 factorial, central composite design (CCD) was...
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Formato: | Artículos |
Lenguaje: | eng |
Publicado: |
2016
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Materias: | |
Acceso en línea: | http://repositorio.educacionsuperior.gob.ec/handle/28000/3166 |
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Sumario: | The aim of this research was to optimize the
production a novel organic biofertilizer with fungicidal
effect in a continuous anaerobic bioreactor optimizing
the main operational parameters that control the
anaerobic digestion process. A 2
4
factorial, central
composite design (CCD) was employed to design the
experimental assays to enhance biofertilizer
production. The selected four factors were
temperature, pH, stirring rate and substrate to
microorganism (F/M) ratio each at five levels, as
response an independent fungicide test of the leaf
fungal pathogen Mycosphaerella fijiensis (M. fijiensis),
the major black leaf streak disease on bananas was
measured in the biofertilizer. The regression coefficient
(R
2
) for the full quadratic model predicted a 100%
growth inhibition of M. fijiensis when used as biocontrol
at 25
o
C, pH 5, 90 rpm and 0.1 F/M ratio, the optimum
process performance achieved in just 7 days
residence time. The results suggested using the
biofertilizer produced under optimum operational
conditions as an alternative fungicide to inhibit the
growth and development of M. fijiensis in organic
farms of Ecuador. |
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