Sustainable Chemistry and Pharmacy最新文献

Valorization of aluminothermite welding slag in sustainable high-performance heavyweight concrete: mechanical and radiation-shielding performance 铝热焊渣在可持续高性能重型混凝土中的增值：力学和辐射屏蔽性能

IF 5.8 2区化学 Q2 CHEMISTRY, MULTIDISCIPLINARY

Sustainable Chemistry and Pharmacy

Pub Date : 2026-01-29 DOI: 10.1016/j.scp.2026.102341

Enes Burak Albayrak, Nabi Yüzer, Burcu Dinç-Şengönül

The growing demand for radiation-shielding materials in nuclear, medical, and protective infrastructures has intensified interest in sustainable alternatives to conventional heavyweight aggregates. This study investigates the valorization of aluminothermite welding slag (AWS), a dense oxide-rich industrial by-product generated at 2200–3000 °C, as a heavyweight aggregate in high-performance concrete (HPC). Six concrete mixtures incorporating 0–100 % AWS were produced at a constant water-to-binder ratio of 0.18, including both fiber-free and steel-fiber-reinforced (0.6 vol %) series. Mechanical performance, fracture behavior, microstructure, capillary water absorption, and gamma and neutron radiation-shielding performance were systematically evaluated. The full-replacement mixture (ALM100) achieved an oven-dry density of 2624 kg/m³ and a 28-day compressive strength of 117 MPa, representing a 12.5 % increase compared to the fiber-reinforced reference. Flexural strength and fracture energy increased to 16 MPa and 1205 N/m, respectively, indicating enhanced post-cracking ductility. Gamma-ray shielding tests using a 0.662 MeV Cs-137 source showed that the linear attenuation coefficient increased from 0.139 cm⁻¹ (REF) to 0.167 cm⁻¹ (ALM100), accompanied by reduced half- and tenth-value layers. Neutron attenuation also improved with increasing AWS content. SEM–EDS analyses confirmed matrix densification and the formation of Fe–Al–Mn oxide-rich clusters responsible for both mechanical enhancement and radiation attenuation. A cradle-to-gate CO₂ assessment revealed that AWS-based heavyweight concrete exhibits approximately 21–29 % lower embodied carbon than conventional barite-, magnetite-, and hematite-based concretes. Furthermore, an Eco-Strength Efficiency (ESE) analysis demonstrated that the AWS-HPC achieved the highest mechanical performance per unit of embodied carbon among the investigated mixtures. Overall, the results confirm that AWS is a technically viable and environmentally efficient aggregate for producing multifunctional heavyweight concretes for structural and radiation-shielding applications.

核、医疗和防护基础设施对辐射屏蔽材料的需求日益增长，这增强了人们对传统重量级聚集体的可持续替代品的兴趣。本研究研究了铝热焊渣（AWS）作为高性能混凝土（HPC）中的重量级骨料的价值，这是一种在2200-3000°C产生的致密富氧化物工业副产物。在恒定水胶比为0.18的条件下，生产了6种含有0 - 100% AWS的混凝土混合物，包括无纤维和钢纤维增强（0.6 vol %）系列。系统评估了材料的力学性能、断裂行为、微观结构、毛细吸水率以及伽马和中子辐射屏蔽性能。完全替代混合物（ALM100）的烘箱干密度为2624 kg/m3, 28天抗压强度为117 MPa，与纤维增强对照相比提高了12.5%。抗折强度和断裂能分别增加到16 MPa和1205 N/m，表明开裂后延性增强。使用0.662 MeV Cs-137源进行的伽玛射线屏蔽试验表明，线性衰减系数从0.139 cm−1 （REF）增加到0.167 cm−1 (ALM100)，并伴有半值层和十值层的减少。随着AWS含量的增加，中子衰减也有所改善。SEM-EDS分析证实了基体致密化和富Fe-Al-Mn氧化物团簇的形成，这些团簇负责机械增强和辐射衰减。一项从摇篮到大门的二氧化碳评估显示，基于aws的重型混凝土的含碳量比传统的重晶石、磁铁矿和赤铁矿基混凝土低约21 - 29%。此外，生态强度效率（ESE）分析表明，在所研究的混合物中，AWS-HPC实现了单位隐含碳的最高机械性能。总的来说，结果证实了AWS是一种技术上可行且环保的骨料，可用于生产用于结构和辐射屏蔽应用的多功能重型混凝土。

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引用次数: 0

Chemical and bioactivity profiling of extractives from tropical wood residues: Ipe, Merbau, and Jatoba 热带木材残留物提取物的化学和生物活性分析：Ipe， Merbau和Jatoba

IF 5.8 2区化学 Q2 CHEMISTRY, MULTIDISCIPLINARY

Sustainable Chemistry and Pharmacy

Pub Date : 2026-01-26 DOI: 10.1016/j.scp.2026.102342

Amina Selmanović , Wojciech Pajerski , Kamil Drozdz , Monika Brzychczy-Wloch , Andreja Kutnar , Rene Herrera Diaz

Wood residues and by-products from the furniture industry represent an underutilized resource with strong potential for integration into circular economy strategies. Extractives derived from these materials are rich in bioactive compounds, making them attractive candidates for bio-based product development. Although the functional properties of wood extractives are well recognized, their systematic recovery and characterization remain insufficiently explored in the context of green chemistry and sustainability. This study investigated the chemical composition and bioactivity of extractives obtained from industrial residues of three tropical hardwoods: Ipe (Handroanthus spp.), Merbau (Intsia spp.), and Jatoba (Hymenaea courbaril). Extractives were obtained via Pressurized Solvent Extraction (PSE) and characterized using gas chromatography (GC-FID and GC-MS). Ultrasound-assisted extraction (UAE) was subsequently applied for bioactivity evaluation. Green metrics, including the simple E-factor (sEF) and unit energy (UEC), were calculated to assess basic environmental efficiency. Gravimetric results showed a predominance of hydrophilic fractions (up to 97 % in Merbau), with major constituents including phenolics, fatty acids, flavonoids, and resin acids. Merbau and Jatoba extracts exhibited strong antioxidant capacity (IC₅₀ < 75 μg/mL), while preliminary antimicrobial screening indicated selective activity of Merbau and Ipe against Staphylococcus aureus and Staphylococcus epidermidis, with Ipe also inhibiting Streptococcus pyogenes. These findings highlight tropical wood residues as renewable sources of bioactive compounds and support their valorisation in sustainable bio-based applications.

家具工业的木材残留物和副产品是一种未充分利用的资源，具有纳入循环经济战略的巨大潜力。从这些材料中提取的提取物富含生物活性化合物，使其成为生物基产品开发的有吸引力的候选者。虽然木材提取物的功能特性得到了很好的认识，但在绿色化学和可持续性的背景下，它们的系统回收和表征仍然没有得到充分的探索。研究了从三种热带硬木：Ipe （Handroanthus spp.）、Merbau （Intsia spp.）和Jatoba （Hymenaea courbaril .）工业废渣中提取的化学成分和生物活性。萃取物采用加压溶剂萃取法（PSE）获得，并采用气相色谱法（GC-FID和GC-MS）进行表征。随后应用超声辅助提取（UAE）进行生物活性评价。计算绿色指标，包括简单e因子（sEF）和单位能量（UEC），以评估基本环境效率。重量分析结果显示，其亲水组分占主导地位（高达97%），主要成分包括酚类物质、脂肪酸、类黄酮和树脂酸。麻瓜提取物和麻瓜提取物具有较强的抗氧化能力（IC50 < 75 μg/mL），初步抗菌筛选表明麻瓜提取物和麻瓜提取物对金黄色葡萄球菌和表皮葡萄球菌有选择性，麻瓜提取物对化脓性链球菌也有抑制作用。这些发现强调了热带木材残留物是生物活性化合物的可再生来源，并支持其在可持续生物基应用中的价值。

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引用次数: 0

Role of red mud in supersulfated cement prepared from arsenic-rich bio-oxidation residue: Hydration, performance and environmental safety 赤泥在富砷生物氧化渣制超硫酸盐水泥中的作用：水化、性能和环境安全

IF 5.8 2区化学 Q2 CHEMISTRY, MULTIDISCIPLINARY

Sustainable Chemistry and Pharmacy

Pub Date : 2026-01-24 DOI: 10.1016/j.scp.2026.102340

Yue Chang , Dengfeng Zhao , Zhiyun Zhao , Shiyu Zhang , Yingliang Zhao

This study investigates the role of red mud (RM) in a supersulfated cement (SSC) system utilizing arsenic-bearing bio-oxidation residue (ABR) as a sulfate-rich source. Two types of RM—sintering red mud (SRM) and Bayer red mud (BRM)—were incorporated at different dosages to systematically evaluate their influences. The results show that SRM markedly accelerates SSC hydration and enhances strength development, achieving compressive strengths of 7.44 MPa at 1 day and 36.12 MPa at 28 days, corresponding to approximately sixfold and 8 % increases compared with the reference sample, respectively. In contrast, BRM provides only limited early-age strength enhancement and slightly reduces later-age strength. Phase assemblage analyses confirmed the enhanced formation of AFt and C–S–H gels and greater silicate polymerization in the presence of SRM. MIP results showed that SRM reduced the total pore volume and increased the proportion of gel pores, indicating pronounced microstructural densification. Leaching tests demonstrated that all SSCs effectively immobilized heavy metals, with risk assessment code (RAC) values within the no–low risk range, while SRM-containing systems showed the lowest values (<1 %), confirming their superior environmental stability.

本研究探讨了赤泥（RM）在含砷生物氧化残渣（ABR）作为富硫酸盐源的超硫酸盐水泥（SSC）体系中的作用。采用烧结赤泥（SRM）和拜耳赤泥（BRM）两种不同掺量的烧结赤泥（SRM），系统评价了它们的影响。结果表明：SRM显著加速了SSC水化，增强了其强度发展，1 d抗压强度为7.44 MPa， 28 d抗压强度为36.12 MPa，分别比参考试样提高了约6倍和8%。相比之下，BRM仅提供有限的早期强度增强，并略有降低后期强度。相组合分析证实，在SRM的存在下，AFt和C-S-H凝胶的形成增强，硅酸盐聚合增强。MIP结果表明，SRM降低了总孔隙体积，增加了凝胶孔隙的比例，表明微观结构致密化明显。浸出试验表明，所有ssc都有效地固定了重金属，其风险评估代码（RAC）值在无低风险范围内，而含有srm的系统显示出最低的值（< 1%），证实了其优越的环境稳定性。

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引用次数: 0

Safe-and-Sustainable-by-Design (SSbD) as an enabler - Positioning SSbD within current chemistry frameworks 作为推动者的安全与可持续设计(SSbD) -在当前的化学框架中定位SSbD

IF 5.8 2区化学 Q2 CHEMISTRY, MULTIDISCIPLINARY

Sustainable Chemistry and Pharmacy

Pub Date : 2026-01-23 DOI: 10.1016/j.scp.2026.102321

Lya G. Soeteman-Hernández , Christina Apel , Emma Strömberg , Klaus Kümmerer

Safe-and-Sustainable-by-Design (SSbD) aims to integrate functionality with safety and sustainability in an iterative and lifecycle thinking approach, starting already at the design stage of the innovation process. This proactive approach ensures that chemicals, materials, and other products are produced and used without being a threat to human and planetary health. In the authors’ understanding, SSbD should ideally start with defining the function or service that is needed and how it can be delivered in the most sustainable way. This should include using the least amount of chemicals or even no chemicals when non-chemical or non-material alternatives are available (systems thinking). This perspective explores where SSbD fits into the bigger picture with respect to already existing chemistry frameworks such as Green Chemistry, Circular Chemistry, Chemistry within a Circular Economy, and Sustainable Chemistry. Analysing the design principles, assessment levels, and key aspects shows that SSbD is strongly interlinked with these chemistry concepts. Greener synthesis (Green Chemistry) and circular value chains (Circular Chemistry and Chemistry within a Circular Economy) are important aspects and objectives of SSbD, while the closed link and highest similarity is to Sustainable Chemistry as both operate on a system level and start with the function/service that needs to be provided. This in mind, the authors consider SSbD as an enabler of Sustainable Chemistry to accelerate the transition towards sustainability from the design stage, thereby moving the chemistry sector towards more sustainable practices, contributing to achieve the United Nations Sustainable Development Goals (SDGs), and ensuring humanity operates within the planetary boundaries.

安全与可持续设计（SSbD）旨在通过迭代和生命周期思维方法将功能与安全性和可持续性相结合，从创新过程的设计阶段开始。这种积极主动的做法确保化学品、材料和其他产品的生产和使用不会对人类和地球健康构成威胁。在作者的理解中，理想的SSbD应该从定义所需的功能或服务以及如何以最可持续的方式交付开始。这应该包括使用最少量的化学品，甚至在有非化学品或非材料替代品时不使用化学品（系统思考）。这一观点探讨了SSbD与现有化学框架（如绿色化学、循环化学、循环经济中的化学和可持续化学）的关系。分析设计原则、评估水平和关键方面表明，SSbD与这些化学概念密切相关。绿色合成（绿色化学）和循环价值链（循环化学和循环经济中的化学）是可持续化学的重要方面和目标，而密切联系和最高相似性是可持续化学，因为两者都在系统层面上运作，并从需要提供的功能/服务开始。考虑到这一点，作者认为SSbD是可持续化学的推动者，可以从设计阶段加速向可持续性的过渡，从而使化学行业朝着更可持续的方向发展，为实现联合国可持续发展目标（sdg）做出贡献，并确保人类在地球范围内运作。

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引用次数: 0

Which is more compatible with cross-jurisdictional transactions of urban waste —— subsidy or cap policies? 哪个更适合跨司法管辖区的城市垃圾交易——补贴政策还是限额政策？

IF 5.8 2区化学 Q2 CHEMISTRY, MULTIDISCIPLINARY

Sustainable Chemistry and Pharmacy

Pub Date : 2026-01-23 DOI: 10.1016/j.scp.2026.102337

Li Ma , Mingxing Zheng , Ziming Zhang

The cross-jurisdictional trade of urban waste (CTUW) is an environmental policy aimed at alleviating waste disposal capacity (WDC) disparities. However, the interaction between CTUW and other mainstream regulatory frameworks, particularly subsidies and caps, the implementation compatibility of their respective policy combinations, and the mechanism design required to optimize such compatibility remain unclear. We address these gaps using a game model, complemented by a policy-mix compatibility assessment framework. Our analysis reveals that pairing CTUW with subsidies generates structural inefficiencies, whereas combining CTUW with caps enables multidimensional Pareto improvements. Specifically, CTUW tends to concentrate waste flows geographically, undermining environmental justice under subsidy regimes. This spatial disparity may create “pollution havens” in cities with surplus WDC, jeopardizing their progress toward “zero-waste” goals. Moreover, while subsidies can directly stimulate trading efficiency, they may also entail implicit penalties for CTUW: overly generous subsidies can destabilize the trading mechanism. By contrast, cap policies support the sustainable operation of CTUW across a wider range of conditions. Consequently, the CTUW–subsidy mix may lead to insufficient market vitality, weaker incentives for waste reduction, and additional regulatory costs, ultimately eroding economic performance and social welfare. We therefore propose refined policy designs, ranging from closed-form expressions for optimal subsidy/cap thresholds to mandatory environmental performance clauses. This work offers a roadmap for moving from isolated policy experiments to integrated policy design, helping policymakers avoid costly incompatibilities and harness policy complementarities.

城市废物跨司法管辖区交易（CTUW）是一项旨在缓解废物处理能力（WDC）差距的环境政策。然而，CTUW与其他主流监管框架（特别是补贴和上限）之间的相互作用、各自政策组合的实施兼容性以及优化这种兼容性所需的机制设计仍不清楚。我们利用博弈模型解决这些差距，并辅以政策组合兼容性评估框架。我们的分析表明，将CTUW与补贴相结合会产生结构性效率低下，而将CTUW与上限相结合则可以实现多维的帕累托改进。具体来说，CTUW倾向于在地理上集中废物流动，破坏补贴制度下的环境正义。这种空间差异可能会在WDC过剩的城市创造“污染天堂”，危及其实现“零浪费”目标的进程。此外，虽然补贴可以直接刺激交易效率，但它们也可能对CTUW造成隐性惩罚：过度慷慨的补贴会破坏交易机制的稳定。相比之下，限额政策支持CTUW在更广泛的条件下的可持续运行。因此，ctuw -补贴组合可能导致市场活力不足，减少废物的激励减弱，以及额外的监管成本，最终损害经济绩效和社会福利。因此，我们建议改进政策设计，从最佳补贴/上限阈值的封闭式表达式到强制性环境绩效条款。这项工作为从孤立的政策实验转向综合政策设计提供了路线图，帮助政策制定者避免代价高昂的不兼容性并利用政策互补性。

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引用次数: 0

Repurposing orange peel waste for limonene extraction using deep eutectic solvents for cosmetic applications 利用深层共晶溶剂提取化妆品用的柠檬烯

IF 5.8 2区化学 Q2 CHEMISTRY, MULTIDISCIPLINARY

Sustainable Chemistry and Pharmacy

Pub Date : 2026-01-23 DOI: 10.1016/j.scp.2026.102339

Monika Arnič , Kristina Andrejc , Mónia A.R. Martins , Filipe H.B. Sosa , João A.P. Coutinho , Blaž Likozar , Filipa A. Vicente

Orange peel waste, a byproduct of the citrus industry, can be valorized to obtain valuable compounds such as limonene, a terpene widely used in the food and cosmetics industry for its characteristic citrus aroma. Conventional extraction methods rely on organic solvents, which pose significant environmental concerns. To address this, deep eutectic solvents (DES) have emerged as a sustainable alternative. In this work, we screened various DES combinations using the COnductor-like Screening MOdel for Realistic Solvents (COSMO-RS), and the most promising systems containing compounds that are Generally Recognized as Safe (GRAS) or accepted by the Cosmetic Ingredient Review (CIR) were subsequently investigated experimentally. Polyethylene glycol 200 and 600 in combination with amino acids, sugars, carboxylic acids and urea were used for DES formulation. Among them, PEG200-urea showed a significantly higher extraction yield of limonene per g of orange peel (2.7 mg g⁻¹) which is approximately 1.4x higher than that obtained with the reference organic solvent, heptane (1.9 mg g⁻¹). The limonene extracted with DES remained stable for at least five weeks when stored at room temperature and in the dark. In addition, hesperidin, a high-value flavonoid for cosmetic applications, was successfully quantified in the extracts, while bergapten (a phototoxic furanocoumarin) and several limonene oxidation products were not detected. Our results show that DES can achieve limonene yields comparable to, or higher than those of conventional extraction systems while presenting more sustainable metrics. This study emphasizes the potential of DES for the sustainable limonene extraction from dried orange peels and contributes to circular economy initiatives.

柑橘工业的副产品——橘皮废料可以被加工成有价值的化合物，如柠檬烯。柠檬烯是一种萜烯，因其特有的柑橘香气而广泛应用于食品和化妆品工业。传统的提取方法依赖于有机溶剂，这造成了严重的环境问题。为了解决这个问题，深共晶溶剂（DES）已经成为一种可持续的替代品。在这项工作中，我们使用现实溶剂的导体样筛选模型（cosmos - rs）筛选了各种DES组合，并随后对含有公认安全（GRAS）或化妆品成分审查（CIR）认可的化合物的最有希望的系统进行了实验研究。聚乙二醇200和600分别与氨基酸、糖、羧酸和尿素结合制备DES。其中，peg200 -尿素对柠檬烯的提取率（2.7 mg g−1）显著高于对照有机溶剂庚烷（1.9 mg g−1）的1.4倍。用DES提取的柠檬烯在室温和避光条件下可稳定保存至少5周。此外，在提取物中成功地定量了用于化妆品的高价值类黄酮橙皮苷，而光毒性呋喃香豆素bergapten和几种柠檬烯氧化产物未被检测到。我们的研究结果表明，DES可以获得与传统提取系统相当或更高的柠檬烯产量，同时提供更可持续的指标。本研究强调了DES在从干橘子皮中可持续提取柠檬烯方面的潜力，并有助于循环经济倡议。

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引用次数: 0

Dictyopteris delicatula extract-based bio-coating: a sustainable strategy for extending postharvest shelf life in Climacteric fruits 以薄叶蕨提取物为基础的生物涂层：延长更年期果实采后货架期的可持续策略

IF 5.8 2区化学 Q2 CHEMISTRY, MULTIDISCIPLINARY

Sustainable Chemistry and Pharmacy

Pub Date : 2026-01-22 DOI: 10.1016/j.scp.2026.102333

Sathish Kumar Boopathi , Srioviya Jayabalan , Sagaya John Paul Joseph , Antony Prakash Rejoy Patrick , Arunkumar Kulanthaiyesu , Nagaraj Subramani

Post-harvest fruit spoilage poses a significant threat to food security and vendor livelihoods, particularly in high-temperature, non-refrigerated retail environments. This study evaluates the efficacy of a bioactive HPMC-based (Hydroxypropyl methylcellulose) gel coating derived from the brown seaweed Dictyopteris delicatula in extending fruit shelf life through a dual-action antioxidant and antimicrobial mechanism. A vendor survey at Koyambedu Wholesale Market (Chennai, India) identified red banana (Musa acuminata) and muskmelon (Cucumis melo) as the most perishable fruits, with the highest Composite Spoilage Index (CSI) values. A bacterial isolate from spoiled fruits was identified as Bacillus velezensis, a potential spoilage agent. Methanolic extract of D. delicatula exhibited high total phenolic content (9.12 mg GAE/g), potent antioxidant capacity (DPPH IC₅₀ = 103.9 μg/mL), and significant hydroxyl radical scavenging (IC₅₀ = 120.7 μg/mL). GC–MS analysis revealed bioactive compounds such as n-hexadecanoic acid (60.07 %) and phenol derivatives. Antibacterial testing showed dose-dependent inhibition of B. velezensis (zone = 8 mm at 1000 μg/mL). Preliminary organoleptic observations indicated that treated fruits maintained visual and textural integrity up to Day 6, compared to visible spoilage in untreated samples by Day 3. Treated red bananas showed only 0.175 % weight loss versus 1.264 % in controls, while muskmelons recorded 2.821 % versus 3.562 %, respectively, by Day 7. The onset of visible spoilage appeared to be delayed by approximately 2–3 days in coated fruits. These indicative findings suggest D. delicatula has potential as a promising, sustainable biopreservative capable of enhancing postharvest quality and minimizing spoilage-driven losses. The dual-functional coating may offer a viable natural alternative for fruit vendors in low-resource, high-risk retail environments.

收获后的水果变质对食品安全和供应商生计构成重大威胁，特别是在高温、非冷藏的零售环境中。本研究评估了从褐藻Dictyopteris delicatula中提取的生物活性hpmc（羟丙基甲基纤维素）凝胶涂层通过双重抗氧化和抗菌机制延长水果保质期的效果。在印度金奈Koyambedu批发市场进行的一项供应商调查发现，红香蕉（Musa acuminata）和甜瓜（Cucumis melo）是最易腐烂的水果，其综合腐败指数（CSI）最高。从变质水果中分离出一种可能变质的芽孢杆菌。杜仲醇提物总酚含量高（9.12 mg GAE/g），抗氧化能力强（DPPH IC50 = 103.9 μg/mL），清除羟基自由基能力强（IC50 = 120.7 μg/mL）。气相色谱-质谱分析发现了正十六烷酸（60.07%）和苯酚衍生物等生物活性化合物。抑菌试验显示，在1000 μg/mL浓度下，对白僵菌的抑制呈剂量依赖性（区域= 8 mm）。初步的感官观察表明，处理过的水果在第6天保持了视觉和质地的完整性，而未经处理的样品在第3天就出现了明显的变质。到第7天，红香蕉的体重减轻了0.175%，而对照组的体重减轻了1.264%，甜瓜的体重减轻了2.821%，而对照组的体重减轻了3.562%。在包衣水果中，明显的腐败似乎延迟了大约2-3天。这些指示性的发现表明，D. delicatula有潜力成为一种有前途的、可持续的生物防腐剂，能够提高采后质量，最大限度地减少腐败造成的损失。这种双功能涂层可能为低资源、高风险零售环境中的水果供应商提供一种可行的天然替代品。

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引用次数: 0

Subcritical water extraction of Ilex guayusa for regulatory-compliant neuro-metabolic functional ingredients 愈青亚临界水提提取调节性神经代谢功能成分

IF 5.8 2区化学 Q2 CHEMISTRY, MULTIDISCIPLINARY

Sustainable Chemistry and Pharmacy

Pub Date : 2026-01-22 DOI: 10.1016/j.scp.2026.102338

Vanesa Sánchez-Martín , Minxing Zhang , Lidia Montero , Elena Ibáñez , Jose A. Mendiola , María Dolores del Castillo

Ilex guayusa (I. guayusa) is a culturally significant Amazonian plant traditionally consumed as a stimulant infusion. Its aqueous extracts are authorized as novel foods in the European Union and Generally Recognized as Safe (GRAS) in the United States, supporting their use in functional foods and supplements. This study evaluates Subcritical Water Extraction (SWE) as a green and regulatory-compliant method for obtaining potential neuro-metabolically active ingredients from I. guayusa. All extracts were obtained using water as the sole solvent, aligning with principles of green chemistry and sustainable processing. SWE at 150 °C yielded the highest extraction efficiency (33.31 %), total phenolic content (183.53 mg GAE/g dry extract), and selective recovery of dicaffeoylquinic acid isomers and flavonoid glycosides. The extract contained 91 mg of caffeine per 100 mL, allowing a maximum intake of approximately 220 mL per serving to remain within European Food Safety Authority (EFSA)'s 200 mg recommendation. Enzymatic and non-enzymatic assays revealed potent antioxidant and anti-inflammatory activities, particularly lipoxygenase inhibition, while cellular models confirmed the extract's ability to reduce reactive oxygen species in neuronal cells and nitric oxide in macrophages without cytotoxicity. The absence of glucagon-like peptide-1 (GLP-1) stimulation indicates that the extract exerts its potential neuromodulatory effects primarily through oxidative and inflammatory modulation. Life cycle assessment demonstrated SWE 150 °C as the most environmentally favorable method. These findings support the development of I. guayusa extracts as multifunctional ingredients for sustainable food and nutraceutical applications, contributing to the United Nations Sustainable Development Goals (SDGs) 3, 12, and 15 through sustainable resource use and green extraction practices valorizing Amazonian biodiversity.

冬青瓜（I. guayusa）是一种具有文化意义的亚马逊植物，传统上被用作兴奋剂输注。其水提取物在欧盟被授权为新型食品，在美国被公认为安全食品（GRAS），支持其在功能性食品和补充剂中的使用。本研究评价了亚临界水萃取法（SWE）是一种绿色且符合法规的方法，可从番石榴中获得潜在的神经代谢活性成分。所有提取物均以水为唯一溶剂，符合绿色化学和可持续加工的原则。150°C的SWE提取效率最高（33.31%），总酚含量最高（183.53 mg GAE/g干提取物），选择性地回收了二咖啡酰奎宁酸异构体和类黄酮苷。这种萃取物每100毫升含有91毫克咖啡因，因此每份的最大摄入量约为220毫升，保持在欧洲食品安全局（EFSA） 200毫克的建议范围内。酶和非酶分析显示了有效的抗氧化和抗炎活性，特别是抑制脂肪加氧酶，而细胞模型证实了提取物能够减少神经元细胞中的活性氧和巨噬细胞中的一氧化氮，而不产生细胞毒性。没有胰高血糖素样肽-1 （GLP-1）刺激表明提取物主要通过氧化和炎症调节发挥其潜在的神经调节作用。生命周期评估表明SWE 150°C是最环保的方法。这些发现支持了番石榴提取物作为可持续食品和营养保健应用的多功能成分的开发，通过可持续的资源利用和绿色提取实践，为实现联合国可持续发展目标（sdg） 3、12和15做出贡献。

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引用次数: 0

Effect of surface modification of stainless steel mesh anode with α-MoO3 on the performance of membrane less single chamber microbial fuel cell α-MoO3改性不锈钢网状阳极对无膜单室微生物燃料电池性能的影响

IF 5.8 2区化学 Q2 CHEMISTRY, MULTIDISCIPLINARY

Sustainable Chemistry and Pharmacy

Pub Date : 2026-01-21 DOI: 10.1016/j.scp.2026.102319

Omamah Tayyabah , Mustafa Anwar , Muhammad Hassan , S.A Muhammed Ali , Ali Bahadar

MFCs are promising bioelectrochemical devices that simultaneously generate energy and degrade pollutants, offering a sustainable solution for environmental remediation. This study investigates the potential of α-MoO₃ modified stainless-steel mesh anode (α-MoO₃/SSM) in a membrane-less single chamber microbial fuel cell (SCMFC) for treating textile effluent containing heavy metals (Cr and Zn), along with bioenergy recovery. X-Ray Diffraction (XRD), Fourier-Transform Infrared spectroscopy (FTIR), and Raman spectroscopy were used to confirm the successful synthesis of α-MoO₃. The performance of the modified anode (SCMFC-2) compared with the bare anode (SCMFC-1) is based on voltage output, Power density, COD removal, and heavy metal removal efficiency. At 10 mL of textile effluent volume, SCMFC-2 outperformed SCMFC-1, achieving a voltage output of 495 mV, a power density of 176 mW/m², a COD removal rate of 84 %, and heavy metal removal rates of 85.5 % for Cr and 80.1 % for Zn. SEM results revealed improved bacterial adhesion and enhanced biofilm-electrode interaction, ascribed to the improved surface area offered by α-MoO₃. Electrochemical analyses further supported the superior performance of SCMFC-2, demonstrating a higher peak current and lower charge transfer resistance (R ct) and ohmic resistance (R ohm). These findings highlighted α-MoO₃ as an effective anode modifier that significantly enhances MFC performance, offering a viable pathway for sustainable wastewater treatment and simultaneous bioenergy production.

mfc是一种很有前途的生物电化学装置，它可以同时产生能量和降解污染物，为环境修复提供了一种可持续的解决方案。本研究探讨了α-MoO3改性不锈钢网状阳极（α-MoO3/SSM）在无膜单室微生物燃料电池（SCMFC）中处理含重金属（Cr和Zn）的纺织废水以及生物能源回收的潜力。利用x射线衍射（XRD）、傅里叶变换红外光谱（FTIR）和拉曼光谱（Raman spectroscopy）证实了α-MoO3的成功合成。与裸阳极（SCMFC-1）相比，改性阳极（SCMFC-2）的性能主要基于电压输出、功率密度、COD去除率和重金属去除率。在10 mL的纺织废水中，SCMFC-2的处理效果优于SCMFC-1，输出电压为495 mV，功率密度为176 mW/m2， COD去除率为84%，Cr去除率为85.5%，Zn去除率为80.1%。扫描电镜结果显示，α-MoO3提高了表面面积，改善了细菌粘附，增强了生物膜-电极相互作用。电化学分析进一步支持了SCMFC-2的优越性能，显示出更高的峰值电流和更低的电荷转移电阻（R ct）和欧姆电阻（R欧姆）。这些发现表明α-MoO3是一种有效的阳极改性剂，可以显著提高MFC性能，为可持续废水处理和同步生物能源生产提供了可行的途径。

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引用次数: 0

Breaking the cycle: A novel eco-friendly strategy for poly(hexamethylene 2,5-furandicarboxylate) synthesis and recycling 打破循环：聚（六亚甲基2,5-呋喃二羧酸酯）合成和回收的一种新的环保策略

IF 5.8 2区化学 Q2 CHEMISTRY, MULTIDISCIPLINARY

Sustainable Chemistry and Pharmacy

Pub Date : 2026-01-21 DOI: 10.1016/j.scp.2026.102334

Feriel Abid , Paula S.S. Lacerda , Vinícius de Paula , Catarina F. Araújo , Fabio Aricò , Armando J.D. Silvestre , Andreia F. Sousa

The shift towards a circular economy in the plastic sector demands a holistic approach that prioritizes biobased feedstocks, benign synthetic routes and efficient end-of-life recycling. Herein, an integrated green strategy for the synthesis and recycling of poly(hexamethylene 2,5-furandicarboxylate) (PHF) is outlined. Cyclic oligoesters were prepared from biobased precursors via cyclodepolymerization (CDP) and subsequently converted into PHF through the entropically driven-ring opening polymerization (ED-ROP). To minimize processing steps the crude CDP product, containing cyclic and linear oligoesters, was used directly, with linear species acting as initiators. The ROP catalytic activity of non-toxic bismuth-based compounds was compared to traditional tin-based catalysts. Bismuth subsalicylate (BiSS) emerged as the most efficient choice, leading to high molecular weight PHF under mild conditions. These polymers were fully characterized by ¹H NMR, FTIR, viscosimetry and XRD techniques and their thermal properties were studied using TGA, DSC, and DMTA methods. The so prepared PHF exhibited excellent thermal stability and high degree of crystallinity. Proof of concept experiments showed that PHF can be chemically recycled via CDP in a relatively short time frame. Altogether, these findings constitute a first step towards the development of a sustainable cradle-to-grave approach for PHF.

塑料行业向循环经济的转变需要一种全面的方法，优先考虑生物基原料、良性合成路线和有效的报废回收。本文概述了聚（六亚甲基2,5-呋喃二羧酸酯）（PHF）的合成和回收的综合绿色策略。以生物基前驱体为原料，通过环解聚（CDP）制备环状低聚酯，然后通过熵驱动开环聚合（ED-ROP）转化为PHF。为了最大限度地减少加工步骤，直接使用含有环状和线性低聚酯的粗CDP产品，线性物种作为引发剂。对无毒铋基化合物与传统锡基催化剂的ROP催化活性进行了比较。次水杨酸铋（BiSS）是最有效的选择，在温和的条件下可以获得高分子量的PHF。采用1H NMR、FTIR、粘度测定和XRD等技术对聚合物进行了表征，并采用TGA、DSC和DMTA等方法对聚合物的热性能进行了研究。所制备的PHF具有优异的热稳定性和较高的结晶度。概念验证实验表明，PHF可以在相对较短的时间内通过CDP进行化学回收。总之，这些发现构成了为PHF制定可持续的从摇篮到坟墓方法的第一步。

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引用次数: 0