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Emergence of biomass-derived single-atom catalysts for platform chemicals production 用于平台化学品生产的生物质衍生单原子催化剂的出现
Q1 Agricultural and Biological Sciences Pub Date : 2024-03-14 DOI: 10.1016/j.jobab.2024.03.001
Adrian Chun Minh Loy, Sankar Bhattacharya
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引用次数: 0
Selective activation of CC bonds in lignin model compounds and lignin for production of value-added chemicals 选择性活化木质素模型化合物和木质素中的 C-C 键以生产增值化学品
IF 20.2 Q1 MATERIALS SCIENCE, PAPER & WOOD Pub Date : 2024-02-10 DOI: 10.1016/j.jobab.2024.02.001
Lignin is a rich renewable aromatic resource that can produce high-value-added chemicals. Lignin is regarded as one of the three major components of lignocellulosic biomass, which is composed of phenylpropane units connected by CO bond and CC bond. The cleavage of two chemical bonds is the main catalytic pathway in the production of chemicals and fuels from lignin. Although the cleavage of CO converts lignin into valuable aromatic compounds and renewable carbon sources, selective depolymerization for CC bonds is an important method to increase the yield of aromatic monomers. Therefore, in this review, we summarized the latest research trends on CC bond selective cleavage in lignin and lignin model compounds, focusing on various catalytic systems, including hydrogenolysis, oxidate, photocatalysis, and electrocatalysis. By analyzing the current status of CC bond breakage, the core issues and challenges related to this process and the expectations for future research were emphasized.
木质素是一种丰富的可再生芳香资源,可生产高附加值化学品。木质素被认为是木质纤维素生物质的三大主要成分之一,由通过 CO 键和 CC 键连接的苯基丙烷单元组成。两个化学键的裂解是利用木质素生产化学品和燃料的主要催化途径。虽然 CO 键的裂解可将木质素转化为有价值的芳香族化合物和可再生碳源,但 CC 键的选择性解聚也是提高芳香族单体产量的重要方法。因此,在这篇综述中,我们总结了木质素和木质素模型化合物中 CC 键选择性裂解的最新研究趋势,重点关注各种催化体系,包括氢解、氧化、光催化和电催化。通过分析 CC 键断裂的现状,强调了与该过程相关的核心问题和挑战以及对未来研究的期望。
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引用次数: 0
Recent antibacterial agents from biomass derivatives: Characteristics and applications 最新的生物质衍生物抗菌剂:特性与应用
IF 20.2 Q1 MATERIALS SCIENCE, PAPER & WOOD Pub Date : 2024-02-09 DOI: 10.1016/j.jobab.2024.02.002
Nissa Nurfajrin Solihat , Alif Faturahman Hidayat , R.A. Ilyas , Senthil Muthu Kumar Thiagamani , Nur Izyan Wan Azeele , Fahriya Puspita Sari , Maya Ismayati , Mohammad Irfan Bakshi , Zaharaddeen N. Garba , M. Hazwan Hussin , Witta Kartika Restu , Wasrin Syafii , Harits Atika Ariyanta , Widya Fatriasari

Enhancing awareness of personal cleanliness and antibacterial resistance has intensified the antibacterial substance request on consumable products. Antibacterial agents that have been commercialized nowadays are produced from inorganic and non-renewable substances. This provides several drawbacks, particularly against health and environmental issues. Therefore, many scientists work on substituting fossil-fuel-based antibacterial agents with natural ones such as from biomass. Biomass derivatives, natural abundances of biopolymers in the world, amount to major compounds including polysaccharides (cellulose, hemicellulose, and chitosan) and polyphenol (tannin and lignin) substances which are capable to combat the growth of Gram-positive bacteria and Gram-negative bacteria. To date, no report focuses on a deep understanding of antibacterial properties derived from biomass and the internal and external factors effects. This work provides that gap because comprehensive knowledge is necessary before applying biomass to the products. The potency of biomass derivatives as antibacterial additives is also summarized. Basic knowledge of antibacterial characteristics to the application in products is highlighted in this review. Besides, the discussion about challenges and future perspectives is also delivered.

个人清洁和抗菌意识的增强,加剧了对消费品中抗菌物质的需求。目前已经商业化的抗菌剂都是由不可再生的无机物质制成的。这就带来了一些弊端,尤其是健康和环境问题。因此,许多科学家致力于用生物质等天然抗菌剂替代化石燃料抗菌剂。生物质衍生物是世界上天然丰富的生物聚合物,其主要化合物包括多糖(纤维素、半纤维素和壳聚糖)和多酚(单宁和木质素)物质,能够抑制革兰氏阳性菌和革兰氏阴性菌的生长。迄今为止,还没有任何报告着重于深入了解生物质的抗菌特性以及内部和外部因素的影响。这项工作填补了这一空白,因为在将生物质应用于产品之前,有必要对其进行全面了解。此外,还总结了生物质衍生物作为抗菌添加剂的功效。本综述重点介绍了从抗菌特性到产品应用的基本知识。此外,还讨论了面临的挑战和未来展望。
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引用次数: 0
Nanotechnology approaches towards biodeterioration-resistant wood: A review 抗生物劣化木材的纳米技术方法:综述
Q1 Agricultural and Biological Sciences Pub Date : 2024-02-01 DOI: 10.1016/j.jobab.2023.09.001
Ayyoob Arpanaei , Qiliang Fu , Tripti Singh

Wood can be a suitable alternative to energy-intensive materials in various applications. Nevertheless, its susceptibility to weathering and decay has significantly hindered the broad adoption of the most commercially significant wood species. While current solutions do tackle certain challenges, they often come with disadvantages like high costs, environmental risks, and/or inefficiencies. Nanotechnology-based methods can be employed to mitigate these weaknesses and create durable, sustainable wood materials. In this review, we delve into cutting-edge advancements in the development of biodeterioration-resistant wood through innovative nanotechnology approaches. These methods usually involve the application of nanomaterials, either possessing biocidal properties or serving as carriers for biocides. We systematically describe these approaches and compare them to conventional wood modification methods. Additionally, this review provides a brief overview of the prevalent biodeteriorating organisms and their mechanisms of action, which notably impact the development and choice of a suitable strategy for wood modification/treatment. Given the requirements of biodeteriorating organisms for growth and wood degradation, it is expected that the new nanotechnology-based approaches to enhance wood durability may provide innovative broad-spectrum biocidal nanosystems. These systems can simultaneously induce alterations in the physicochemical properties of wood, thereby constraining the availability of the growth requirements. These alterations can efficiently inhibit the biodeterioration process by decreasing water absorption, restricting access to the wood components, and reducing void spaces within the wood structure. Finally, this review highlights the new opportunities, challenges, and perspectives of nanotechnology methods for biodeterioration-resistant wood, through which some techno-economic, environmental and safety aspects associated with these methods are addressed.

在各种应用中,木材可以替代能源密集型材料。然而,木材易风化和腐朽的特性极大地阻碍了最具商业价值的木材品种的广泛应用。虽然目前的解决方案确实能应对某些挑战,但它们往往具有成本高、环境风险大和/或效率低等缺点。可以采用基于纳米技术的方法来减轻这些缺点,并创造出耐用、可持续的木质材料。在本综述中,我们将深入探讨通过创新纳米技术方法开发抗生物劣化木材的前沿进展。这些方法通常涉及纳米材料的应用,它们或具有杀菌特性,或可作为杀菌剂的载体。我们系统地介绍了这些方法,并将它们与传统的木材改性方法进行了比较。此外,本综述还简要介绍了普遍存在的生物劣化有机体及其作用机制,这对开发和选择合适的木材改性/处理策略具有显著影响。鉴于生物劣化生物对生长和木材降解的要求,预计基于纳米技术的提高木材耐久性的新方法可能会提供创新的广谱杀菌纳米系统。这些系统可同时引起木材物理化学特性的改变,从而限制生长需求的可用性。这些改变可以通过降低吸水性、限制木材成分的进入以及减少木材结构中的空隙来有效抑制生物退化过程。最后,本综述强调了纳米技术方法在抗生物劣化木材方面的新机遇、挑战和前景,并探讨了与这些方法相关的一些技术经济、环境和安全方面的问题。
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引用次数: 0
Cellulose sub-nanometric ribbons: A new generation of nanocellulose and platform for biomaterials 亚纳米纤维素带:新一代纳米纤维素和生物材料平台
Q1 Agricultural and Biological Sciences Pub Date : 2024-02-01 DOI: 10.1016/j.jobab.2023.09.002
Shaomin Kang , Yang Zhao , Junlong Song , Huining Xiao
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引用次数: 0
Recent development and challenges in enhancing fire performance on wood and wood-based composites: A 10-year review from 2012 to 2021 提高木材和木基复合材料防火性能的最新进展与挑战:2012 至 2021 年的十年回顾
Q1 Agricultural and Biological Sciences Pub Date : 2024-02-01 DOI: 10.1016/j.jobab.2023.10.004
Charles Michael Albert, Kang Chiang Liew

Due to their durability, versatility, and aesthetic value, wood and wood-based composites are widely used as building materials. The fact that these materials are flammable, however, raises a major worry since they might cause fire hazards and significant loss of life and property. The article investigates the variables that affect fire performance as well as the various fire-retardant treatments and their mechanisms. The current developments and challenges in improving the fire performance of wood and wood-based composites treated with fire-retardant materials are summarized in this paper. Nanoparticles, organic chemicals, and densification are some recent developments in fire-retardant treatments that are also emphasized. Key points from the review are summarized, along with potential areas for further research and development.

木材和木基复合材料因其耐用性、多功能性和美观价值而被广泛用作建筑材料。然而,这些材料易燃这一事实却引起了人们的极大担忧,因为它们可能会引发火灾,造成重大的生命和财产损失。文章研究了影响防火性能的变量以及各种阻燃处理方法及其机理。本文总结了目前在提高经阻燃材料处理的木材和木基复合材料的防火性能方面所取得的进展和面临的挑战。纳米颗粒、有机化学品和致密化是阻燃处理方面的一些最新进展,本文也对此进行了强调。本文总结了综述的要点,以及进一步研究和开发的潜在领域。
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引用次数: 0
Improving antioxidant activities of water-soluble lignin-carbohydrate complex isolated from wheat stalk through prolonging ball-milling pretreatment and homogeneous extraction 通过延长球磨预处理和均相萃取提高从小麦茎秆中分离出的水溶性木质素-碳水化合物复合物的抗氧化活性
Q1 Agricultural and Biological Sciences Pub Date : 2024-02-01 DOI: 10.1016/j.jobab.2023.11.002
Di Xie , Zhulan Liu , Yunfeng Cao , Sheng-I Yang , Chen Su , Mi Li

Water-soluble lignin-carbohydrate complex (LCC) rich in polysaccharides exhibits benign in vitro antioxidant activities and distinguishes high biocompatibility from lignin-rich LCC and lignin. However, the antioxidant activity of water-soluble LCCs remains to be improved and its structure-antioxidant relationship is still uncertain. Herein, structurally diversified water-soluble LCCs were isolated under different ball-milling pretreatment durations (4, 6, 8 h), extraction pathways (homogeneous and heterogeneous), and isolation routines (water extracts and residues after water extraction). Their structures were characterized by wet chemistry, chromatography and spectroscopies. Antioxidant activities were evaluated by ferric reducing antioxidant power and 1,1-diphenyl-2-picrylhydrazyl radicals scavenging rate (RDPPH). Results show that altering ball-milling duration and isolation procedures cause varied structures and antioxidant activities of the water-soluble LCCs. Specifically, prolonging ball-milling duration to 8 hours and homogeneous extraction can enhance their antioxidant activity through releasing more phenolic structures and promoting the extraction of high-molecular-weight LCCs via reducing mass-transfer resistance, respectively. As a result, the RDPPH of water-soluble LCCs reaches up to 97.35%, which is associated with the arabinan content with statistical significance (P < 0.05). This study provides new insights into the structure-antioxidation relationship of herbaceous LCC as potential antioxidants.

富含多糖的水溶性木质素-碳水化合物复合物(LCC)具有良性的体外抗氧化活性,与富含木质素的 LCC 和木质素相比具有较高的生物相容性。然而,水溶性 LCC 的抗氧化活性仍有待提高,其结构与抗氧化之间的关系仍不确定。本文在不同的球磨预处理时间(4、6、8 h)、不同的萃取途径(均相和异相)和不同的分离方法(水提取和水提取后残留)下分离出了结构多样的水溶性木质素。通过湿化学、色谱法和光谱法对它们的结构进行了表征。通过铁还原抗氧化能力和 1,1-二苯基-2-苦基肼自由基清除率(RDPPH)评估了抗氧化活性。结果表明,改变球磨时间和分离程序会导致水溶性 LCC 的结构和抗氧化活性发生变化。具体来说,将球磨时间延长至 8 小时和均匀提取可分别通过释放更多的酚类结构和降低传质阻力促进高分子量 LCCs 的提取来提高其抗氧化活性。结果,水溶性 LCC 的 RDPPH 值高达 97.35%,且与阿拉伯聚糖含量相关,具有统计学意义(P < 0.05)。这项研究为了解草本植物 LCC 作为潜在抗氧化剂的结构-抗氧化关系提供了新的视角。
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引用次数: 0
Structure and mechanical properties of windmill palm fiber with different delignification treatments 经不同木质素化处理的风车棕榈纤维的结构和机械性能
Q1 Agricultural and Biological Sciences Pub Date : 2024-02-01 DOI: 10.1016/j.jobab.2023.12.001
Changjie Chen , Pengfei Xu , Xinhou Wang

The removal of lignin from natural cellulose fibers is a crucial step in preparing high-performance materials, such as compressed high-toughness composites. This process can eliminate non-cellulosic impurities, create abundant compressible pores, and expose a greater number of active functional groups. In this study, biomass waste windmill palm fiber was used as the raw material to prepare holocellulose fibers through various chemical treatments. The structure, chemical composition, Fourier transform infrared spectroscopy analysis, X-ray diffraction analysis, thermal properties, and mechanical properties, particularly fatigue performance, were studied. The sodium chlorite treated fiber had the highest crystallinity index (61.3%) and the most complete appearance structure. The sodium sulfite treated fiber had the highest tensile strength (227.34 ± 52.27) MPa. Hydroxide peroxide treatment removed most of the lignin and hemicellulose, increasing the cellulose content to 68.83% ± 0.65%. However, all the chemical treatments decreased the thermal property of the fibers.

从天然纤维素纤维中去除木质素是制备高性能材料(如压缩高韧性复合材料)的关键步骤。这一过程可以去除非纤维素杂质,形成丰富的可压缩孔隙,并暴露出更多的活性官能团。本研究以生物质废风车棕榈纤维为原料,通过各种化学处理制备全纤维素纤维。研究了纤维的结构、化学成分、傅里叶变换红外光谱分析、X 射线衍射分析、热性能和机械性能,尤其是疲劳性能。经亚硫酸钠处理的纤维结晶度指数最高(61.3%),外观结构最完整。亚硫酸钠处理纤维的抗拉强度最高(227.34 ± 52.27)兆帕。过氧化氢处理可去除大部分木质素和半纤维素,使纤维素含量增至 68.83% ± 0.65%。然而,所有化学处理都降低了纤维的热性能。
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引用次数: 0
Recent Antibacterial Agents from Biomass Derivatives: Characteristics and Applications 最新的生物质衍生物抗菌剂:特性与应用
Q1 Agricultural and Biological Sciences Pub Date : 2024-02-01 DOI: 10.1016/j.jobab.2024.02.002
N. N. Solihat, Alif Faturahman Hidayat, R.A. Ilyas, S. M. K. Thiagamani, Nur Izyan Wan Azeele, F. P. Sari, Maya Ismayati, Mohammad Irfan Bakshi, Z. N. Garba, M. H. Hussin, W. K. Restu, W. Syafii, H. A. Ariyanta, W. Fatriasari
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引用次数: 0
Adsorption of pharmaceutical pollutants on ZnCl2-activated biochar from corn cob: Efficiency, selectivity and mechanism 玉米芯 ZnCl2 活性生物炭对制药污染物的吸附:效率、选择性和机理
Q1 Agricultural and Biological Sciences Pub Date : 2024-02-01 DOI: 10.1016/j.jobab.2023.10.003
Christian F. Varela , L.C. Moreno-Aldana , Yazmin Yaneth Agámez-Pertuz

The occurrence of pharmaceuticals in water bodies and drinking water poses risks for the environment and human health, thus it is necessary to study methodologies that allow the efficient removal of these contaminants. In this work, corn cob-derived biochar was obtained by ZnCl2-activation, and subsequent carbonization at 700 °C. The effect of contact time, temperature, pH, and initial concentration on the adsorption capacity of acetaminophen (ACE) and amoxicillin (AMX) was determined through batch experiments. In addition, the kinetics, isotherms, and thermodynamics parameters were determined. The activated biochar exhibited a maximum adsorption capacity of 332.08 mg/g for ACE and 175.86 mg/g for AMX. The adsorption kinetics and adsorption isotherm of ACE corresponded to the pseudo-second order and Langmuir model, respectively. Meanwhile, pseudo-first-order kinetics and the Freundlich isotherm model were well-fitted to AMX adsorption. The ACE and AMX co-adsorption had a synergistic effect on AMX but an antagonistic effect on ACE removal, achieving a maximum adsorption capacity of 193.51 and 184.58 mg/g, respectively. On the other hand, fixed-bed column experiments showed that the adsorption capacity depends on the influent concentration, and the breakthrough curve fits the Thomas and Yoon-Nelson model. The mechanism adsorption studies showed that surface interactions (hydrogen bonding formation and n-π interactions) are the main driving forces for the adsorption process, and pore filling is the rate-limiting step. In this way, the prepared biochar exhibits a high potential for the adsorption of pharmaceutical compounds from water.

水体和饮用水中的药物会对环境和人类健康造成危害,因此有必要研究有效去除这些污染物的方法。在这项研究中,玉米芯衍生生物炭是通过氯化锌 2-2 活化,然后在 700 °C 下碳化得到的。通过批量实验确定了接触时间、温度、pH 值和初始浓度对对乙酰氨基酚(ACE)和阿莫西林(AMX)吸附能力的影响。此外,还测定了动力学、等温线和热力学参数。活性生物炭对 ACE 和 AMX 的最大吸附容量分别为 332.08 毫克/克和 175.86 毫克/克。ACE 的吸附动力学和吸附等温线分别符合假二阶和 Langmuir 模型。同时,伪一阶动力学和 Freundlich 等温线模型也很好地拟合了 AMX 的吸附。ACE 和 AMX 共吸附对 AMX 有协同作用,但对 ACE 的去除有拮抗作用,最大吸附容量分别为 193.51 和 184.58 mg/g。另一方面,固定床柱实验表明,吸附容量取决于进水浓度,突破曲线符合 Thomas 和 Yoon-Nelson 模型。机理吸附研究表明,表面相互作用(氢键形成和 n-π 相互作用)是吸附过程的主要驱动力,孔隙填充是限速步骤。因此,制备的生物炭在吸附水中的药物化合物方面具有很大的潜力。
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引用次数: 0
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Journal of Bioresources and Bioproducts
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