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Article

Calorific Value and Chemical Composition of Five Semi-Arid Mexican Tree Species

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Departamento de Botánica, Facultad de Ciencias Biológicas, Universidad Autónoma de Nuevo León, Ciudad Universitaria, C.P. 66450, San Nicolás de los Garza, Nuevo León, Mexico
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Laboratorio de Tecnología de la madera, Facultad de Ciencias Forestales, Universidad Autónoma de Nuevo León, Carretera Nacional, Km 145, C.P. 67700, Linares, Nuevo León, Mexico
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Facultad de Ingeniería en Tecnología de la Madera, Universidad Michoacana de San Nicolás de Hidalgo, Gral. Francisco J. Múgica S/N Ciudad Universitaria, C.P. 58030, Morelia, Michoacán, Mexico
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Faculty of Resources Management, University of Applied Sciences and Arts (HAWK), Büsgenweg 1A, D-37077 Gottingen, Germany
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Author to whom correspondence should be addressed.
Academic Editors: Jarmo Holopainen and Timothy A. Martin
Forests 2016, 7(3), 58; https://doi.org/10.3390/f7030058
Received: 1 December 2015 / Revised: 18 February 2016 / Accepted: 22 February 2016 / Published: 4 March 2016
The current global energy crisis has generated growing interest in looking for alternatives to traditional fossil fuels, presenting lignocellulosic materials as a promising resource for sustainable energy production. In this paper, the calorific values and chemical composition of the trunks, branches, twigs and leaves of five timber species of the semi-arid land of Mexico (Helietta parvifolia (Gray) Benth., Ebenopsis ebano (Berl.) Barneby, Acacia berlandieri (Benth.), Havardia pallens (Benth.) Britton & Rose and Acacia wrightii (Benth.)) were determined according to international standards. The results highlighted the calorific value ranges of 17.56 to 18.61 MJ kg−1 in trunks, 17.15 to 18.45 MJ kg−1 in branches, 17.29 to 17.92 MJ kg−1 in twigs, and 17.35to 19.36 MJ kg−1 in leaves. The pH presented an acidic trend (3.95–5.64). The content of mineral elements varied in trunks (1.09%–2.29%), branches (0.86%–2.75%), twigs (4.26%–6.76%) and leaves (5.77%–11.79%), showing the higher proportion in Ca (57.03%–95.53%), followed by K (0.95%–19.21%) and Mg (0.88%–13.47%). The highest amount of extractives was obtained in the methanolic solvent (3.96%–17.03%). The lignin recorded values of 28.78%–35.84% for trunks, 17.14%–31.39% for branches and 20.61%–29.92% for twigs. Lignin showed a moderately strong correlation (r = 0.66) with calorific value, but the best mathematical model was registered with the calorific value depending on the pH and lignin (R2 = 58.86%). View Full-Text
Keywords: calorific value; chemical components; timber species calorific value; chemical components; timber species
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MDPI and ACS Style

Ngangyo-Heya, M.; Foroughbahchk-Pournavab, R.; Carrillo-Parra, A.; Rutiaga-Quiñones, J.G.; Zelinski, V.; Pintor-Ibarra, L.F. Calorific Value and Chemical Composition of Five Semi-Arid Mexican Tree Species. Forests 2016, 7, 58. https://doi.org/10.3390/f7030058

AMA Style

Ngangyo-Heya M, Foroughbahchk-Pournavab R, Carrillo-Parra A, Rutiaga-Quiñones JG, Zelinski V, Pintor-Ibarra LF. Calorific Value and Chemical Composition of Five Semi-Arid Mexican Tree Species. Forests. 2016; 7(3):58. https://doi.org/10.3390/f7030058

Chicago/Turabian Style

Ngangyo-Heya, Maginot, Rahim Foroughbahchk-Pournavab, Artemio Carrillo-Parra, José Guadalupe Rutiaga-Quiñones, Volker Zelinski, and Luis Fernando Pintor-Ibarra. 2016. "Calorific Value and Chemical Composition of Five Semi-Arid Mexican Tree Species" Forests 7, no. 3: 58. https://doi.org/10.3390/f7030058

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