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Non-thermal plasma as an innovative pretreatment technology in delignification of brewery by-product
Innovative Food Science & Emerging Technologies ( IF 6.3 ) Pub Date : 2021-09-06 , DOI: 10.1016/j.ifset.2021.102827
Gabriela N. Pereira 1 , Karina Cesca 1 , Anelise Leal Vieira Cubas 2 , Ritanara Tayane Bianchet 2 , Sidnei Emilio Bordignon Junior 1 , Eduardo Zanella 3 , Boris U. Stambuk 3 , Patrícia Poletto 1 , Débora de Oliveira 1
Affiliation  

Non-thermal plasma was applied as an innovative pretreatment for the delignification of brewery by-products. The influence of different plasma gases (pure air or air/argon), time and solids concentration (7.5, 10 and 12.5%) was evaluated during the delignification tests. The levels of cellulose, hemicellulose and lignin were monitored before and after treatment. The reduction in lignin content was approximately 50% after 5 min using pure air in all tested solids concentrations. Longer pretreatment times (60 min) influenced the removal of hemicellulose (50%) and cellulose (12%), also indicated by morphological changes. After 5 and 60 min of plasma application, the physical-chemical characteristics showed minor changes in its chemical composition, mainly affected by the losses of lignocellulosic compounds. Non-thermal plasma is considered an attractive alternative for the pretreatment of brewery by-products, resulting mainly in removing lignin, assisting in subsequent processes such as the enzymatic hydrolysis of the spent solid.



中文翻译:

非热等离子体作为啤酒副产品脱木素的创新预处理技术

非热等离子体被用作啤酒副产品脱木素的创新预处理。在脱木素测试期间评估了不同等离子气体(纯空气或空气/氩气)、时间和固体浓度(7.5、10 和 12.5%)的影响。在处理前后监测纤维素、半纤维素和木质素的水平。在所有测试的固体浓度下,使用纯空气 5 分钟后,木质素含量降低了大约 50%。较长的预处理时间 (60 分钟) 影响了半纤维素 (50%) 和纤维素 (12%) 的去除,形态变化也表明了这一点。等离子应用 5 和 60 分钟后,理化特性显示其化学成分发生微小变化,主要受木质纤维素化合物损失的影响。

更新日期:2021-09-07
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