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Products: Pecans
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Optimization of subcritical water hydrolysis of pecan wastes biomasses in a semi-continuous mode.
Authors: dos Santos, M. S., Zabot, G. L., Mazutti, M. A., Ugalde, G. A., & Tres, M. V.
- Journals: Bioresour Technol
- Pages: 123129
- Volume: 306
- Year: 2020
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Pecan cultivation has increased in recent years. Consequently, the amount of lignocellulosic residuals from its production has expanded. Thus, there is a necessity to explore and add value to their coproducts. The objective of this work was to obtain reducing sugars from pecan biomasses by the optimization of the subcritical water hydrolysis technology in a semi-continuous mode and the physicochemical and morphological characterization of these materials, such as SEM, TGA and FT-IR analysis. Temperatures of 180, 220 and 260 °C, water/solids mass ratio of 15 and 30 g water/g biomass and total reaction time of 15 min were used. The highest reducing sugar yield was 27.1 g/100 g of biomass, obtained at 220 °C and R-15 for pecan shells. TGA, SEM and FT-IR analysis indicated the modifications of structures and compositions of biomasses in fresh and hydrolyzed samples.