在循环经济中集成电化学传感器：基于造纸废弃物的生物炭膜传感器用于农业食品副产品增值

IF 6.2

Green Analytical Chemistry Pub Date : 2025-05-12 DOI:10.1016/j.greeac.2025.100277

Selene Fiori , Annalisa Scroccarello , Flavio Della Pelle , Michele Del Carlo , Enrico Cozzoni , Dario Compagnone

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引用次数: 0

摘要

可持续纳米结构纸传感器（PS）已被开发用于检测植物性农业食品副产品中的生物活性化合物。这些传感器由100%回收纤维、纸张和纸浆工业衍生的生物炭组成，并使用可获得的、具有成本效益的技术生产。详细地说，黑液衍生的生物炭（BH）使用超声波辅助的液相剥离方法在水中纳米分散，避免了溶剂。独立的bh传感纳米膜直接在纤维素膜上形成，并集成到在再生纸上制造的模板印刷完整的电化学传感器中。对生物炭基纸传感器（BH-PS）进行了优化、表征，然后将其用于分析农业食品垃圾及其衍生物中存在的生物活性酚，包括可可和咖啡壳、废咖啡粉、橄榄叶和朝鲜蓟生产废物为基础的补充剂。BH-PS表现出稳健的性能，对咖啡酸、儿茶素、绿原酸和橄榄苦苷等代表性生物化合物产生了剂量-响应曲线。结果表明，线性关系良好（R²≥0.9946），检出限为0.03 ~ 0.6µM。该传感器已成功用于定量农业食品废弃物及其衍生物中的生物分子，其结果与传统的光度测定法相当(r≥0.99；相对于AuNPs测定的相对误差：- 3%至+ 14%)。该方法对所有样品的加样回收率为97 ~ 114%；RSD≤13%,n = 3)。最后，使用White分析化学框架验证了BH-PS的优越可持续性，与传统的比色和色谱方法（60 - 80%）相比，获得了显着更高的分数（94%）。这项工作展示了一个循环经济模型，利用植物来源的废物专门制造集成的纸张传感器，然后应用于确定植物来源的农业食品副产品中的高价值生物活性化合物。

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Integrating electrochemical sensors in circular economy: biochar-film sensors based on paper industry waste for agri-food by-product valorization

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Integrating electrochemical sensors in circular economy: biochar-film sensors based on paper industry waste for agri-food by-product valorization

Sustainable nanostructured paper sensors (PS) have been developed to detect bioactive compounds in plant-derived agri-food by-products. These sensors comprise 100 % recycled fibers-paper and pulp industry-derived biochar and are produced using accessible, cost-effective technologies.

In detail, black liquor-derived biochar (BH) was nano-dispersed in water using an ultrasound-assisted liquid phase exfoliation-like approach, avoiding solvents. Self-standing BH-sensing nanofilms were formed directly on cellulosic membranes and integrated into stencil-printed complete electrochemical sensors manufactured on recycled paper. The biochar-based paper sensors (BH-PS) were optimized, characterized, and then employed to analyze bioactive phenols present in agri-food waste and derivatives, including cocoa and coffee husks, exhausted coffee powder, and olive leaves and artichoke production waste-based supplements.

BH-PS demonstrated robust performance, yielding dose-response curves for representative bio-compounds such as caffeic acid, catechin, chlorogenic acid, and oleuropein. These showed excellent linearities (R² ≥ 0.9946) and detection limits ranging from 0.03 to 0.6 µM. The sensors were successfully used to quantify biomolecules in agri-food wastes and derivatives, with results comparable to conventional photometric assays (r ≥ 0.99; relative error vs. AuNPs assay: -3 % to +14 %). The method produced quantitative and reproducible recoveries for all samples (97–114 %; RSD ≤ 13 %, n = 3). Finally, the superior sustainability of the BH-PS was validated using the White Analytical Chemistry framework, achieving a significantly higher score (94 %) compared to traditional colorimetric and chromatographic methods (60–80 %).

This work demonstrates a circular economy model, utilizing plant-derived waste exclusively to fabricate integrated paper sensors, that were then applied to determine high-value bioactive compounds in plant-derived agri-food by-products.

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来源期刊

Green Analytical Chemistry

CiteScore

3.00

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0.00%

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