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Physicochemical Characterization and SEM-EDX Analysis of Brewer’s Spent Grain from the Craft Brewery Industry

Author

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  • Marcos A. Coronado

    (Instituto de Ingeniería, Universidad Autónoma de Baja California, Blvd. Benito Juárez y Calle de la Normal S/N, Col. Insurgentes Este, Mexicali 21280, Baja California, Mexico)

  • Gisela Montero

    (Instituto de Ingeniería, Universidad Autónoma de Baja California, Blvd. Benito Juárez y Calle de la Normal S/N, Col. Insurgentes Este, Mexicali 21280, Baja California, Mexico)

  • Daniela G. Montes

    (Instituto de Ingeniería, Universidad Autónoma de Baja California, Blvd. Benito Juárez y Calle de la Normal S/N, Col. Insurgentes Este, Mexicali 21280, Baja California, Mexico)

  • Benjamín Valdez-Salas

    (Instituto de Ingeniería, Universidad Autónoma de Baja California, Blvd. Benito Juárez y Calle de la Normal S/N, Col. Insurgentes Este, Mexicali 21280, Baja California, Mexico)

  • José R. Ayala

    (Instituto de Ingeniería, Universidad Autónoma de Baja California, Blvd. Benito Juárez y Calle de la Normal S/N, Col. Insurgentes Este, Mexicali 21280, Baja California, Mexico)

  • Conrado García

    (Instituto de Ingeniería, Universidad Autónoma de Baja California, Blvd. Benito Juárez y Calle de la Normal S/N, Col. Insurgentes Este, Mexicali 21280, Baja California, Mexico)

  • Mónica Carrillo

    (Instituto de Ingeniería, Universidad Autónoma de Baja California, Blvd. Benito Juárez y Calle de la Normal S/N, Col. Insurgentes Este, Mexicali 21280, Baja California, Mexico)

  • José A. León

    (Instituto de Ingeniería, Universidad Autónoma de Baja California, Blvd. Benito Juárez y Calle de la Normal S/N, Col. Insurgentes Este, Mexicali 21280, Baja California, Mexico)

  • Abigail Moreno

    (Instituto de Ingeniería, Universidad Autónoma de Baja California, Blvd. Benito Juárez y Calle de la Normal S/N, Col. Insurgentes Este, Mexicali 21280, Baja California, Mexico)

Abstract

The brewing industry generates, as the primary coproduct, brewers’ spent grain (BSG). In Mexicali, Baja California, Mexico, there are 17 companies that generated 282 tons of BSG by 2016. Cattle feeding is the most common type of disposal for this waste. However, it can be valorized for the production of bioenergy or as a source of added-value products. Therefore, the objective of the present work was to assess the physicochemical properties of the brewers’ spent grain from a local craft brewery, to choose the most appropriate exploitation route. Chemical and morphological analyses were carried out by energy dispersive X-ray fluorescence spectroscopy (EDX), scanning electron microscopy, and the higher heating value determination. The results of the proximate analyses were 72.32% moisture, 78.47% volatile matter, 17.48% fixed carbon, and 4.05% ash. The results of the chemical analysis for extractables were 5.23% using organic solvent and 50.25% using hot water. The content determination were 17.13% lignin, 26.80% cellulose, and 37.17% hemicellulose. The results of the ultimate analysis were 43.59% C, 6.18% H, 3.46% N, and 37.22% O. The higher heating value experimentally obtained was 18.70 MJ/kg. Moreover, in the EDX analysis, Ca, P, K, and S were mainly found. It is recommendable to valorize the BSG through the xylitol, bioethanol or biogas production, because of its high moisture, hemicellulose and cellulose content.

Suggested Citation

  • Marcos A. Coronado & Gisela Montero & Daniela G. Montes & Benjamín Valdez-Salas & José R. Ayala & Conrado García & Mónica Carrillo & José A. León & Abigail Moreno, 2020. "Physicochemical Characterization and SEM-EDX Analysis of Brewer’s Spent Grain from the Craft Brewery Industry," Sustainability, MDPI, vol. 12(18), pages 1-13, September.
    • Handle: RePEc:gam:jsusta:v:12:y:2020:i:18:p:7744-:d:415816
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    References listed on IDEAS

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    1. Saidur, R. & Abdelaziz, E.A. & Demirbas, A. & Hossain, M.S. & Mekhilef, S., 2011. "A review on biomass as a fuel for boilers," Renewable and Sustainable Energy Reviews, Elsevier, vol. 15(5), pages 2262-2289, June.
    2. Montero, Gisela & Coronado, Marcos A. & Torres, Ricardo & Jaramillo, Beatriz E. & García, Conrado & Stoytcheva, Margarita & Vázquez, Ana M. & León, José A. & Lambert, Alejandro A. & Valenzuela, Edgar, 2016. "Higher heating value determination of wheat straw from Baja California, Mexico," Energy, Elsevier, vol. 109(C), pages 612-619.
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