Optimization of poplar wood shavings bio-pretreated with Coriolus versicolor to produce binderless fiberboard using response surface methodology

IF 1.3 4区农林科学 Q2 MATERIALS SCIENCE, PAPER & WOOD

Bioresources Pub Date : 2024-07-19 DOI:10.15376/biores.19.3.6178-6189

Jianguo Wu, Ci Jin, Tingting Liu, Guilong Yan

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引用次数: 0

Abstract

Free formaldehyde is released due to the addition of aldehyde-based adhesives during the production of fiberboard. This is harmful to human health and pollutes the environment, and for that reason binderless fiberboard has become a research hotspot. There have been reports about pretreatments with white-rot fungi or lignocellulase to produce binderless fiberboard, but there have been no such reports about optimizing the bio-pretreatment conditions. In this study, poplar wood shavings were used for fiberboard production, and the bio-pretreatment conditions with Coriolus versicolor were studied using response surface methodology. After single-factor optimization, the central levels of bran, molasses, and magnesium sulfate were obtained. Further optimization was carried out using Box-Behnken design to study the influence of the factors. A second-order polynomial equation was obtained, and the low p-value (0.001) implied that the model was highly significant. The optimized bio-pretreatment conditions for modulus of rupture (MOR) of the fiberboard were obtained by ridge analysis as 3.021 g of bran, 8.907 g of molasses, and 0.27 g of magnesium sulfate. Under the optimized conditions, MOR of fiberboard reached 27.21±0.64 MPa, which was 2.2 times that of the control fiberboard. Bio-pretreatment with C. versicolor should be a good choice to produce a high-strength binderless fiberboard.

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利用响应面方法优化杨木刨花与科里奥利生物处理技术，以生产无粘合剂纤维板

在纤维板生产过程中，由于添加了醛基粘合剂，会释放出游离甲醛。这不仅对人体健康有害，还会污染环境，因此无粘合剂纤维板已成为研究热点。目前已有关于使用白腐真菌或木质纤维素酶进行预处理以生产无粘合剂纤维板的报道，但还没有关于优化生物预处理条件的报道。本研究利用杨木刨花生产纤维板，并采用响应面法研究了白腐霉菌的生物预处理条件。经过单因素优化，得到了麸皮、糖蜜和硫酸镁的中心水平。采用箱-贝肯设计进行了进一步优化，以研究各因素的影响。得到了一个二阶多项式方程，较低的 p 值（0.001）意味着模型非常显著。通过脊分析得出纤维板断裂模数（MOR）的优化生物预处理条件为 3.021 克麸皮、8.907 克糖蜜和 0.27 克硫酸镁。在优化条件下，纤维板的 MOR 达到 27.21±0.64 兆帕，是对照纤维板的 2.2 倍。用 C. versicolor 进行生物预处理应是生产高强度无粘结剂纤维板的良好选择。

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来源期刊

Bioresources 工程技术-材料科学：纸与木材

CiteScore

2.90

自引率

13.30%

发文量

397

审稿时长

2.3 months

期刊介绍： The purpose of BioResources is to promote scientific discourse and to foster scientific developments related to sustainable manufacture involving lignocellulosic or woody biomass resources, including wood and agricultural residues. BioResources will focus on advances in science and technology. Emphasis will be placed on bioproducts, bioenergy, papermaking technology, wood products, new manufacturing materials, composite structures, and chemicals derived from lignocellulosic biomass.