Chemical characterization and fuel properties of wood and bark of two oaks from Oaxaca, Mexico

Ruíz-Aquino, Faustino; González-Peña, Marcos M.; Valdéz-Hernández, Juan Ignacio; Revilla, Ursula S.; Romero-Manzanares, Angélica

doi:10.1016/j.indcrop.2014.11.024

Cited by 44 publications

(40 citation statements)

References 22 publications

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“…The ash consists of mainly potassium carbonate with varying degrees of calcium, magnesium, and sodium carbonate as well as minute quantities of iron oxide, alumina, and silica. Pure ash is white in color [13]. A high ash content of a plant part makes it less desirable as fuel, because a considerable part of the volume cannot be converted into energy [23,27].…”

Section: Discussionmentioning

confidence: 99%

“…To provide the country with environmental-friendly and sustainable energy source, fuelwood mainly high fixed carbon firewood can be taken as one alternative. In the world, there are different related articles such as wood-based biomass energy development [12] and firewood and charcoal properties [13,14]. Similarly, in Africa, the article concerning fuelwood is "Evaluation of fuel properties of six tropical hardwood timber species for briquettes" [15].…”

Section: Introductionmentioning

confidence: 99%

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Determination of Energy Properties of Fuelwood from Five Selected Tree Species in Tropical Highlands of Southeast Ethiopia

Desta

Seboka

2020

Journal of Energy

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The aim of this study was to determine the energy properties of fuelwood samples which are preferred and used by local communities. The study used both cross-sectional survey of households and field survey. Systematic household sampling was used for household and random sampling for tree species. The chosen sample sizes for households in the study were 134. The cross-sectional survey of the local community on orderly preference of fuelwood consumption listed Acacia nilotica, Acacia etbaica, Olea africana, Acacia seyal, and Acokanthera schimperi. However, for the laboratory result and detail principal component analysis (PCA) of tree species in their density and moisture, ash, volatile, and fixed carbon contents, Olea africana was strongly recommended for fuelwood preference followed by Acacia nilotica, Acacia etbaica, Acacia seyal, and Acokanthera schimperi. The identification of community preference and scientific assessment on fuelwood consumption on different tree species will enhance the expansion of their plantation program in the region.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Determination of Energy Properties of Fuelwood from Five Selected Tree Species in Tropical Highlands of Southeast Ethiopia

Desta

Seboka

2020

Journal of Energy

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“…El material restante de los árboles derribados se utilizó para cuantificar la biomasa aérea (Ruiz- Aquino et al, 2014), y para la caracterización química y energética de la madera y el carbón de los dos encinos (Ruiz-Aquino et al, 2015b). El depósito e identificación de los especímenes se realizó en el herbario de la Universidad de la Sierra Juárez, Oaxaca.…”

Section: Materiales Y Métodosunclassified

Estructura anatómica de la madera de dos encinos de Oaxaca

Ruíz-Aquino

González-Peña

Valdéz-Hernández

et al. 2016

MYB

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México es un centro de distribución para las especies del género Quercus, con 161 especies registradas, de las que 60 presentan características favorables para el aprovechamiento maderable. Aquí se describen las características anatómicas de la madera de Quercus laurina y Q. crassifolia, y se correlacionan con su densidad básica, contracción volumétrica y dureza. La madera de Q. laurina presentó brillo alto y veteado medio, mientras que en Q. crassifolia fueron medio y pronunciado, respectivamente. Ambas especies presentan porosidad anular, poros solitarios de forma oval, radios uniseriados, multiseriados y agregados, parénquima apotraqueal difuso en agregados, y fibras libriformes y fibrotraqueidas. En Q. laurina se determinó una correlación entre el espesor de pared de las fibras y la densidad básica (r = 0,97), y entre el diámetro de lumen de las fibras y la contracción volumétrica (r > 0,99). En Q. crassifolia, las correlaciones más altas se dieron entre la contracción volumétrica y el espesor de pared de las fibras (r = 0,97), y con el diámetro de las fibras (r = 0,93). En los dos encinos, la contracción volumétrica alta y la presencia de radios muy anchos, indican una mayor propensión de la madera a presentar grietas y rajaduras durante el proceso de secado.

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“…In Mexico, oak is the second most important forestry resource and is mostly used for handcrafts, fire wood, and charcoal manufacture (Ruiz‐Aquino, González‐Peña, Valdez‐Hernández, Revilla, & Romero‐Manzanares, ). This industry generates a great amount of waste biomass with great potential for valorization (Stevanovic et al., ).…”

Section: Introductionmentioning

confidence: 99%

Investigation of the Antibacterial Activity and Subacute Toxicity of a Quercus crassifolia Polyphenolic Bark Extract for its Potential Use in Functional Foods

Valencia-Avilés

Martínez-Flores

Garcı̀a-Pèrez

et al. 2019

Journal of Food Science

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Oak wood is used in barrels for wine aging. During aging, polyphenols are transferred from the barrels to the liquid. Although the bioactivity of oak polyphenols in wines has been extensively studied, no investigation exists on their toxicological properties, which limits their use as functional safe ingredients for other products. In this work, the chemical composition of a polyphenolic extract of Quercus crassifolia bark (QCBe) was studied by GC‐MS. Its antibacterial properties on probiotic and pathogenic bacteria and its subacute‐oral toxicity were determined as a way to understand the potential impact from its addition to fermented food as a functional ingredient. QCBe shows a selective inhibition of Escherichia coli compared with Lactobacillus bulgaricus and Streptococcus thermophylus. According to the toxicity evaluation, the subacute no‐observed‐adverse‐effect‐level was achieved at 11 mg/kg bw/day, whereas the subacute lowest‐observed‐adverse‐effect‐level for kidney damage was at 33 mg/kg bw/day. These results suggest that, given the fact an adverse effect was observed after subacute administration of this extract, further longer term toxicological studies are needed to provide sufficient safety evidence for its use in humans. Practical Application Mexico's yogurt market is growing which creates opportunities for the development of some yogurt products as functional foods. As a first step to evaluate its potential use in yogurt formulation, the antibacterial effect of a Quercus crassifolia polyphenolic extract (QCBe) on probiotic bacteria and its subacute‐oral toxicity in rats were studied. A low inhibition on probiotic bacteria growth was observed after QCBe addition to Lactobacillus bulgaricus and Streptococcus thermophylus cultures. Exposure to QCBe for a subacute duration resulted in renal injury in rats at dosages greater than or equal to 33 mg/kg/bw/day. This adverse effect indicates the importance of performing further long‐term toxicological assessments prior to the addition of QCBe to a food like yogurt, which is regularly eaten by consumers.

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Chemical characterization and fuel properties of wood and bark of two oaks from Oaxaca, Mexico

Cited by 44 publications

References 22 publications

Determination of Energy Properties of Fuelwood from Five Selected Tree Species in Tropical Highlands of Southeast Ethiopia

Determination of Energy Properties of Fuelwood from Five Selected Tree Species in Tropical Highlands of Southeast Ethiopia

Estructura anatómica de la madera de dos encinos de Oaxaca

Investigation of the Antibacterial Activity and Subacute Toxicity of a Quercus crassifolia Polyphenolic Bark Extract for its Potential Use in Functional Foods

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