Santos Maicon S N Dos, Zabot Giovani L, Mazutti Marcio A, Ugalde Gustavo A, Rezzadori Katia, Tres Marcus V
Laboratory of Agroindustrial Processes Engineering (LAPE), Federal University of Santa Maria (UFSM), Sete de Setembro St., 1040, Cachoeira do Sul, RS 96508-010, Brazil.
Departament of Chemical Engineering, Federal University of Santa Maria (UFSM), Roraima Av., 1000, Santa Maria, RS 97105-900, Brazil.
Bioresour Technol. 2020 Jun;306:123129. doi: 10.1016/j.biortech.2020.123129. Epub 2020 Mar 6.
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.
近年来，山核桃种植面积有所增加。因此，其生产过程中产生的木质纤维素残渣数量也有所增加。因此，有必要探索这些副产品并为其增加价值。这项工作的目的是通过在半连续模式下优化亚临界水水解技术，从山核桃生物质中获得还原糖，并对这些材料进行物理化学和形态学表征，如扫描电子显微镜（SEM）、热重分析（TGA）和傅里叶变换红外光谱（FT-IR）分析。使用的温度为180、220和260℃，水/固体质量比为15和30g水/g生物质，总反应时间为15分钟。山核桃壳在220℃和R-15条件下获得的最高还原糖产量为27.1g/100g生物质。TGA、SEM和FT-IR分析表明新鲜样品和水解样品中生物质的结构和组成发生了变化。
