Department of Biotechnology, Engineering School of Lorena, University of São Paulo, postal code 12602-810 Lorena, Brazil.
Department of Biotechnology, Engineering School of Lorena, University of São Paulo, postal code 12602-810 Lorena, Brazil.
Bioresour Technol. 2019 Oct;290:121777. doi: 10.1016/j.biortech.2019.121777. Epub 2019 Jul 8.
Development of new technologies for pretreatment of lignocellulosic biomass is a current research challenge. In this way, hydrodynamic cavitation (HC) was used to assist alkaline hydrogen peroxide pretreatment of sugarcane bagasse (SCB) in sequential batches (SB-HC), semi-continuous (SC-HC) and continuous (C-HC) processes. Pretreatment resulted in compositional modifications in the material, mainly regarding the cellulose and lignin contents. The released sugars after enzymatic hydrolysis resulted, on average, in 42 g and 32-35 g of glucose per 100 g of SCB for samples treated in B-HC (10 min of process) and SC-HC process (7.5 min residence time), respectively. In C-HC process, with an average residence time of 7.5 min and 3.75 min, 38-46 g and 32-38 g of glucose per 100 g of SCB were obtained respectively in enzymatic hydrolysis step. HC technology was shown as a promising alternative for pretreatment of lignocellulosic biomass in all evaluated configurations aiming to produce high value bioproducts.
开发预处理木质纤维素生物质的新技术是当前的研究挑战。在这种情况下，水力空化（HC）被用于辅助甘蔗渣（SCB）的碱性过氧化氢预处理，分别在分批（SB-HC）、半连续（SC-HC）和连续（C-HC）工艺中进行。预处理导致材料的成分发生了变化，主要是纤维素和木质素的含量。经酶水解后释放的糖，平均而言，在 B-HC（10 分钟的处理时间）和 SC-HC 工艺（7.5 分钟停留时间）处理的样品中，每 100g SCB 分别为 42g 和 32-35g 葡萄糖。在 C-HC 工艺中，平均停留时间为 7.5 分钟和 3.75 分钟，在酶水解步骤中，分别获得了每 100g SCB 为 38-46g 和 32-38g 的葡萄糖。HC 技术在所有评估的配置中均显示出作为预处理木质纤维素生物质的有前途的替代方法，旨在生产高附加值的生物制品。
