Microbial inoculant and an extract of &lt;i&gt;Trichoderma longibrachiatum&lt;/i&gt; with xylanase activity effect on chemical composition, fermentative profile and aerobic stability of guinea grass (&lt;i&gt;Pancium maximum&lt;/i&gt; Jacq.) silage

Gandra, Jefferson Rodrigues; Oliveira, Euclides Reuter de; Goes, Rafael Henrique de Tonissi e Buschinelli de; Oliveira, Kelly Mari Pires de; Takiya, Caio Seiti; Valle, Tiago A. Del; Araki, H.M.C.; Silveira, Karina Silva; Silva, D.; Pause, Alzira Gabriela da Silva

doi:10.22358/jafs/80776/2017

Cited by 3 publications

(2 citation statements)

References 28 publications

(33 reference statements)

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“…The calorific value obtained for the GG was 15.5 MJ kg −1 , and is comparable to Napier grass (16.2-18.1 MJ kg −1 ) [41], tamarind residues (17.5 MJ kg −1 ) [42], smoked cigarette butts (18.5 MJ kg −1 ) [43], and jackfruit wastes (16.3-17.2 MJ kg −1 ) [39]. An extractives content of 1.4% agreed with the literature [40,44]. A lignin content of 21.5%, which was nearly twice that reported by Ratsamee et al [45] for GG, using the acetyl bromide method, was recorded, while Mohammed et al [41] obtained a lignin content for Napier grass of 24%.…”

Section: Characterization Of Guinea Grasssupporting

confidence: 88%

Study on Combustion Characteristics and Thermodynamic Parameters of Thermal Degradation of Guinea Grass (Megathyrsus maximus) in N2-Pyrolytic and Oxidative Atmospheres

et al. 2021

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This study provides an extensive investigation on the kinetics, combustion characteristics, and thermodynamic parameters of the thermal degradation of guinea grass (Megathyrsus maximus) in N2-pyrolytic and oxidative atmospheres. A model-fitting technique and three different iso-conversional techniques were used to investigate the kinetics of the thermal process, after which an analysis of the combustion characteristics and thermodynamic parameters was undertaken. Prior to this, experiments on the physico-chemical characterization, thermogravimetric, and spectroscopic analyses were carried out to provide insight into the compositional structure of the guinea grass. The volatile matter, fixed carbon, and total lignin contents by mass were 73.0%, 16.1%, and 21.5%, respectively, while the higher heating value was 15.46 MJ/kg. The cellulose crystallinity index, determined by XRD, was 0.43. The conversion of the GG in air proceeded at a relatively much higher rate as the maximum mass-loss rate peak in a 20 K/min read was −23.1 and −12.3%/min for the oxidative and the pyrolytic, respectively. The kinetics investigation revealed three distinctive stages of decomposition with their corresponding values of activation energy. The average values of activation energy (FWO) at the latter stages of decomposition in the pyrolytic processes (165 kJ/mol) were higher than those in the oxidative processes (125 kJ/mol)—an indication of the distinctive phenomenon at this stage of the reaction. The Coats–Redfern kinetic model revealed that chemical reactions and diffusional models played a predominant role in the thermal decomposition process of the GG. This study showed that the thermodynamic parameters varied with the conversion ratio, and the combustion performance increased with the heating rates. The use of GG as an energy feedstock is recommended based on the findings from this work.

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Section: Characterization Of Guinea Grasssupporting

confidence: 88%

Study on Combustion Characteristics and Thermodynamic Parameters of Thermal Degradation of Guinea Grass (Megathyrsus maximus) in N2-Pyrolytic and Oxidative Atmospheres

et al. 2021

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“…Para el contenido de EE se destaca lo sucedido con el ensilado de Mombasa, en el que el valor más alto ocurrió en el corte p.m. sin adición de inóculo, y el más bajo en el corte a.m. El valor medio para Tanzania (1.93%) fue superior al observado (1.45%) en un estudio en donde se evaluaron diferentes dosis de aditivos bacterianos y de enzima (30). En otro experimento (33), se encontraron porcentajes de EE promedio de 1.82%, que son próximos a los valores de 2.07% observados para ese forraje.…”

Section: Discussionunclassified

Ensilados de Megathyrsus maximus: Efecto del horario de corte y de la inoculación microbiana

2022

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Objetivo. Evaluar el efecto del horario de corte y de la adición de un inóculo microbiano sobre las características fermentativas y nutricionales de ensilados de gramíneas del género Megathyrsus maximus. Materiales y métodos. Los tratamientos fueron conformados por la combinación de los factores tipo de forraje (cultivares Tanzania y Mombasa, y maíz), horario de corte (a.m.-p.m.) y uso de aditivo (con-sin). Se utilizó un diseño completamente al azar en arreglo factorial. Resultados. La evaluación sensorial fue aceptable en todos los ensilados, y en los cortados en el horario p.m., el contenido de materia seca tendió a ser mayor (p=0.071), al igual que la digestibilidad (p<0.02). La adición de inóculo redujo (p<0.05) las pérdidas de proteína. El ensilado de Mombasa presentó mayor concentración de materia seca y de componentes fibrosos (p<0.001), y el de maíz mayor contenido de carbohidratos solubles (p<0.001) y el pH (3.76) más bajo (p<0.001). Las pérdidas por fermentación fueron mayores en Mombasa y menores en maíz (p=0.003). Conclusión. En términos generales, el corte en horas de la tarde mejora la digestibilidad del ensilado, y la adición de inóculo microbiano reduce las pérdidas de proteína.

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Fermentation profile and chemical composition of cassava root silage

et al. 2021

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The use of cassava root silage for animal feeding is a suitable option for farmers who grow cassava as an alternative product and for cattle ranchers who have to deal with high prices of corn. Our objective was to determine the effects of cassava genotypes and the correction of soil acidity on the microbial population, fermentation characteristics, chemical composition, aerobic stability and losses of cassava root silage. We used a 2 × 3 factorial design in completely randomized blocks, with four replications. We evaluated two cassava genotypes (Caeté and Manteiguinha) and three methods of soil acidity correction (lime, gypsum, and lime+gypsum). The roots were harvested 11 months after planting, ensiled in PVC silos, and stored for 45 days. No interaction was observed between genotypes and soil acidity correction for any of the evaluated parameters. The silage of Caeté genotype showed the highest concentration of dry matter (421 g kg-1 fresh matter) and non-fibrous carbohydrates (893 g kg-1 dry matter), and the lowest concentrations of neutral detergent fiber (37.1 g kg-1 dry matter) . No significant differences were observed among treatments for lactic acid bacteria, yeast and mold counts in silages. Both genotypes resulted in silages with an adequate fermentation profile and considerably high aerobic stability, but with high effluent loss. The Caeté genotype showed to be potentially better for silage production due to its higher dry matter recovery. Due to the high level of effluent loss, it is recommended to test the effect of a moisture-absorbing additive during the ensiling process of these cassava roots.

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Microbial inoculant and an extract of <i>Trichoderma longibrachiatum</i> with xylanase activity effect on chemical composition, fermentative profile and aerobic stability of guinea grass (<i>Pancium maximum</i> Jacq.) silage

Cited by 3 publications

References 28 publications

Study on Combustion Characteristics and Thermodynamic Parameters of Thermal Degradation of Guinea Grass (Megathyrsus maximus) in N2-Pyrolytic and Oxidative Atmospheres

Study on Combustion Characteristics and Thermodynamic Parameters of Thermal Degradation of Guinea Grass (Megathyrsus maximus) in N2-Pyrolytic and Oxidative Atmospheres

Ensilados de Megathyrsus maximus: Efecto del horario de corte y de la inoculación microbiana

Fermentation profile and chemical composition of cassava root silage

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