Sustainable Chemistry One World最新文献_第3页

Sustainable synthesis of copper oxide nanoparticles using the fruit extract of Piper cubeba and evaluation of their antibacterial, antioxidant, anti-inflammatory and catalytic activities 用胡椒果提取物可持续合成氧化铜纳米颗粒及其抗菌、抗氧化、抗炎和催化活性评价

Sustainable Chemistry One World Pub Date : 2026-03-01 Epub Date: 2026-01-31 DOI: 10.1016/j.scowo.2026.100196

A. Swarna Latha , P. Aruna , T. Chandrasekhar , V. Anu Prasanna , K. Riazunnisa

{"title":"Sustainable synthesis of copper oxide nanoparticles using the fruit extract of Piper cubeba and evaluation of their antibacterial, antioxidant, anti-inflammatory and catalytic activities","authors":"A. Swarna Latha , P. Aruna , T. Chandrasekhar , V. Anu Prasanna , K. Riazunnisa","doi":"10.1016/j.scowo.2026.100196","DOIUrl":"10.1016/j.scowo.2026.100196","url":null,"abstract":"<div><div>The present study describes the cost-effective and eco-friendly synthesis of CuONPs using the fruit extract of <em>Piper cubeba</em> (PC). UV–Vis analysis of synthesized PC-CuONPs showed a characteristic absorbance peak at 310 nm, confirming nanoparticle formation. XRD analysis revealed the crystalline nature of CuONPs, while SEM images indicated predominantly spherical particles with some degree of surface irregularity and agglomeration. EDAX confirmed the elemental presence of copper, and FTIR analysis indicated the involvement of phytochemical functional groups in nanoparticle stabilization. DLS analysis showed a hydrodynamic particle size of approximately 382 nm, reflecting aggregation in aqueous media and highlighting the difference between hydrated and dry-state particle dimensions. The functional performance of PC-CuONPs was evaluated through antibacterial, antioxidant, anti-inflammatory, and catalytic assays. Enhanced antibacterial activity was observed against <em>Bacillus subtilis</em>, <em>Staphylococcus aureus</em>, and <em>Salmonella typhimurium</em> compared to <em>Escherichia coli</em> and <em>Proteus vulgaris</em> at 100 µg/mL. MIC and MBC values for <em>S. typhimurium</em> are 100 and 115 μg/mL, respectively. Antioxidant activity showed 49 % inhibition in the phosphomolybdenum assay and 70 % hydrogen peroxide scavenging at 125 µg/mL. Anti-inflammatory activity, assessed via egg albumin protein denaturation, exhibited a maximum inhibition of 64 %. The nanoparticles also demonstrated effective catalytic degradation of methylene blue dye within 120 min. Overall, this study highlights the role of <em>P. cubeba</em> phytochemicals in the green synthesis of functional CuONPs and demonstrates their potential in catalytic and preliminary bioactivity-related applications.</div></div>","PeriodicalId":101197,"journal":{"name":"Sustainable Chemistry One World","volume":"9 ","pages":"Article 100196"},"PeriodicalIF":0.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146187941","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Algal biodiesel: A comprehensive review of promise, challenges, and future pathways 藻类生物柴油：前景、挑战和未来途径的全面回顾

Sustainable Chemistry One World Pub Date : 2026-03-01 Epub Date: 2026-01-05 DOI: 10.1016/j.scowo.2026.100183

M. Karthikeyan , R.S. Akshaya , N.S. Meenakshy , Lakshmi Natarajan , S. Sathish , R. Pugalendhi

{"title":"Algal biodiesel: A comprehensive review of promise, challenges, and future pathways","authors":"M. Karthikeyan , R.S. Akshaya , N.S. Meenakshy , Lakshmi Natarajan , S. Sathish , R. Pugalendhi","doi":"10.1016/j.scowo.2026.100183","DOIUrl":"10.1016/j.scowo.2026.100183","url":null,"abstract":"<div><div>Research on microalgae as a feedstock for biodiesel has increased due to the growing need for sustainable liquid fuels because of their high lipid productivity, quick growth, and suitability for wastewater and carbon-capture systems. While many reviews outline the processes of cultivation, harvesting, extraction, and transesterification, many do not provide an integrated interpretation of new downstream innovations and system-level performance. In order to fill that gap, this review combines a bibliometric meta-analysis (2010–2025) with a targeted assessment of low-energy downstream routes, specifically wet extraction, enzyme-assisted disruption, and in situ transesterification, to determine which technologies have the most potential to lower energy intensity. Furthermore, a techno-economic sensitivity analysis and scenario-based Life Cycle Assessment (LCA) demonstrate how the Net Energy Ratio (NER) is influenced by the electricity mix, nutrient sourcing, harvesting technique, and extraction route. The findings demonstrate that under low-carbon energy systems, combining wastewater nutrients, flocculation-based harvesting, and wet or in situ extraction can change algal biodiesel from energy-negative (NER < 0.7) to energy-positive (NER > 1.5). This review offers a comprehensive evaluation of practical routes for scaling algal biodiesel toward economically feasible and ecologically responsible biorefinery systems by combining bibliometric trends with technological advancements and LCA–TEA scenarios.</div></div>","PeriodicalId":101197,"journal":{"name":"Sustainable Chemistry One World","volume":"9 ","pages":"Article 100183"},"PeriodicalIF":0.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145924585","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Comparative analysis of magnetic tamarind kernels and GO-grafted magnetic tamarind kernels for the mitigation of Congo red dye 磁性罗望子核与氧化石墨烯接枝磁性罗望子核对刚果红染料缓释效果的比较分析

Sustainable Chemistry One World Pub Date : 2026-03-01 Epub Date: 2025-12-31 DOI: 10.1016/j.scowo.2025.100178

Sunita Hooda , Sahil Kohli , Nishita , Rushali Makkar , Anita Narang , Anupama Shukla , Manisha Verma , Sanjeeta Rani , Geetu Gambhir , Laishram Saya

{"title":"Comparative analysis of magnetic tamarind kernels and GO-grafted magnetic tamarind kernels for the mitigation of Congo red dye","authors":"Sunita Hooda , Sahil Kohli , Nishita , Rushali Makkar , Anita Narang , Anupama Shukla , Manisha Verma , Sanjeeta Rani , Geetu Gambhir , Laishram Saya","doi":"10.1016/j.scowo.2025.100178","DOIUrl":"10.1016/j.scowo.2025.100178","url":null,"abstract":"<div><div>The present study focuses on the fabrication of magnetized tamarind kernel powder (MTKP) nanocomposites and graphene oxide-blended tamarind kernel powder (MTKP-GO) nanocomposites <em>via</em> co-precipitation method, and were employed for their application in the removal of Congo red dye from wastewater. Several physico-chemical techniques were investigated to analyse the surface morphology and structural identification of these nanocomposites. FE-SEM, XRD, and FTIR tests yielded distinctive findings, demonstrating the successful fabrication of magnetic TKP-GO with a sizable surface area and favourable magnetic response. Batch adsorption tests revealed a relatively greater adsorption potential for M TKP-GO (q<sub>max</sub>= 236.795 <sup>mg/g</sup>) compared to M TKP (q<sub>max</sub> =150.8045 <sup>mg/g</sup>). The pseudo-second-order model best fitted the data for adsorption kinetics with R<sup>2</sup> valus of 0.9952 and 0.99604 for MTKP AND MTKP-GO respectively. Of all the isotherm models investigated, interestingly it was found that the Langmuir model best fit the adsorption data for M TKP, while the Freundlich isotherm model best explained the adsorption behaviour for M TKP-GO.</div></div>","PeriodicalId":101197,"journal":{"name":"Sustainable Chemistry One World","volume":"9 ","pages":"Article 100178"},"PeriodicalIF":0.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145884160","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Valorization of mangosteen (Garcinia mangostana L) waste as green hair dyeing pigment: Effect of mordant and formula optimization 山竹废料作为绿色染发色素的价值评价：媒染剂的影响及配方优化

Sustainable Chemistry One World Pub Date : 2026-03-01 Epub Date: 2025-12-30 DOI: 10.1016/j.scowo.2025.100176

Susiana Prasetyo , Silvia Bertha , Asaf K. Sugih , Daniel Tan , Hans Kristianto

{"title":"Valorization of mangosteen (Garcinia mangostana L) waste as green hair dyeing pigment: Effect of mordant and formula optimization","authors":"Susiana Prasetyo , Silvia Bertha , Asaf K. Sugih , Daniel Tan , Hans Kristianto","doi":"10.1016/j.scowo.2025.100176","DOIUrl":"10.1016/j.scowo.2025.100176","url":null,"abstract":"<div><div>The growing concerns over synthetic hair dyes necessitate exploring natural alternatives. Mangosteen (<em>Garcinia mangostana</em> L.) pericarp, an abundant agricultural waste rich in anthocyanins, presents a promising, underutilized source for natural hair coloration. This research evaluates mangosteen pericarp extract for developing a natural reddish hair dye, addressing common limitations in natural dye stability and color range. This study investigated the type of mordants (FeSO<sub>4</sub>, MgSO<sub>4</sub>, and Ca(OH)<sub>2</sub>) and the concentration in terms of color development, alongside optimizing extract concentration to achieve the highest reddish color intensity. Hair color was characterized using visual assessment and colorimetric analysis (<em>L*, a*, b*, ΔE*</em>). Results revealed that FeSO₄ applied at acidic pH produced the desired reddish hair color, with a 2 % (<em>w/v</em>) mordant concentration yielding the most intense hue. Furthermore, a 10 % (<em>w/v</em>) crude extract concentration produced the most significant color difference (<em>ΔE*</em>) when applied to bleached hair, indicating a darker reddish coloration. Crucially, color fastness tests, involving 30 cycles of washing and simulated sunlight exposure, demonstrated good persistence of the reddish color with 18 % color difference observed. Functional groups analysis using FTIR confirmed the presence of anthocyanin on the dyed hair, and the dyed hair's tensile strength increased from 35.38 (bleached hair) to 57.65 MPa. This work highlights the potential of mangosteen pericarp as a viable, eco-friendly hair colorant, contributing to agricultural waste valorization and offering a safer alternative in the cosmetics industry.</div></div>","PeriodicalId":101197,"journal":{"name":"Sustainable Chemistry One World","volume":"9 ","pages":"Article 100176"},"PeriodicalIF":0.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145884218","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Harnessing marine algae for sustainable nutraceuticals and food chemistry: A comprehensive review on biomass production and applications 利用海藻进行可持续营养药品和食品化学：生物质生产和应用的综合综述

Sustainable Chemistry One World Pub Date : 2026-03-01 Epub Date: 2026-01-20 DOI: 10.1016/j.scowo.2026.100192

V.C. Deivayanai , A. Saravanan , Y.P. Ragini , A.S. Vickram

{"title":"Harnessing marine algae for sustainable nutraceuticals and food chemistry: A comprehensive review on biomass production and applications","authors":"V.C. Deivayanai , A. Saravanan , Y.P. Ragini , A.S. Vickram","doi":"10.1016/j.scowo.2026.100192","DOIUrl":"10.1016/j.scowo.2026.100192","url":null,"abstract":"<div><div>Algae are the macro/micro scale living plantations that are observed in places rich in moisture and water thus they are produced on a large scale carrying many helpful flavonoids, phenols, and carbohydrates. This review paper examines current technological advances in algal biomass production and their prospective uses in the food business. Various culture methods, including open pond structures, photobioreactors, and closed-loop systems, are thoroughly investigated along with their benefits and drawbacks with the parameters. Furthermore, the nutritional and functional aspects of major algae-derived components, including omega-3 fatty acids, carotenoids phycobiliproteins, and polyunsaturated are discussed, emphasizing their potential health advantages and dietary applications. This study discusses the obstacles to algae production, processing, commercialization, as well as potential solutions to these challenges. Such initiatives, by allowing the introduction of algae-based nutraceuticals into the mainstream food market could make a substantial contribution to supporting sustainable agriculture and addressing global health concerns are detailed.</div></div>","PeriodicalId":101197,"journal":{"name":"Sustainable Chemistry One World","volume":"9 ","pages":"Article 100192"},"PeriodicalIF":0.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146037475","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Electron-beam synthesized Ag–Cu nanoparticles with enhanced antimicrobial activity 电子束合成具有增强抗菌活性的银铜纳米颗粒

Sustainable Chemistry One World Pub Date : 2026-03-01 Epub Date: 2026-02-04 DOI: 10.1016/j.scowo.2026.100200

Nguyen Ngoc Duy , Dang Van Phu , Nguyen Chi Thuan , Truong Thanh Ngoc , Nguyen Thi Kim Lan , Le Anh Quoc , Hoang Dac Hiet , Tran Quoc Bao

{"title":"Electron-beam synthesized Ag–Cu nanoparticles with enhanced antimicrobial activity","authors":"Nguyen Ngoc Duy , Dang Van Phu , Nguyen Chi Thuan , Truong Thanh Ngoc , Nguyen Thi Kim Lan , Le Anh Quoc , Hoang Dac Hiet , Tran Quoc Bao","doi":"10.1016/j.scowo.2026.100200","DOIUrl":"10.1016/j.scowo.2026.100200","url":null,"abstract":"<div><div>This study presents the green synthesis and characterization of bimetallic silver–copper (Ag–Cu) nanoparticles produced using electron beam (EB) irradiation and stabilized with chitosan. Ag–Cu nanoalloys with various Ag:Cu molar ratios were fabricated through in-situ radiolytic reduction using a 10 MeV EB accelerator. UV–Vis spectroscopy revealed composition-dependent surface plasmon resonance features, while TEM and XRD analyses confirmed the formation of uniformly dispersed spherical nanoparticles with enhanced crystallinity after irradiation. FTIR spectra indicated the involvement of chitosan functional groups in stabilizing nanoparticles. The antimicrobial activity of the nanoalloys was assessed against <em>Pseudomonas solanacearum</em> (bacteria) and <em>Neoscytalidium dimidiatum</em> (fungus), two major agricultural pathogens. Ag-rich compositions (2:1 and 3:1) exhibited the most significant inhibitory effects, including the outperforming monometallic Ag and Cu controls. The improved bioactivity is attributed to the synergistic release of ions and intensified reactive oxygen species generation facilitated by the EB-induced nanoalloy structure.</div></div>","PeriodicalId":101197,"journal":{"name":"Sustainable Chemistry One World","volume":"9 ","pages":"Article 100200"},"PeriodicalIF":0.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146187945","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Role of ammonia and urea in comparing the functional properties of precipitated spinel Mn3O4 nanomaterials 氨和尿素在比较沉淀尖晶石Mn3O4纳米材料功能性能中的作用

Sustainable Chemistry One World Pub Date : 2026-03-01 Epub Date: 2026-02-02 DOI: 10.1016/j.scowo.2026.100199

S.A. Ashika, S. Balamurugan , T.K. Sana Fathima

{"title":"Role of ammonia and urea in comparing the functional properties of precipitated spinel Mn3O4 nanomaterials","authors":"S.A. Ashika, S. Balamurugan , T.K. Sana Fathima","doi":"10.1016/j.scowo.2026.100199","DOIUrl":"10.1016/j.scowo.2026.100199","url":null,"abstract":"<div><div>This study explores the role of ammonia and urea in inter comparing the (micro)-structural, thermal, and optical properties of precipitated Mn₃O₄ nanomaterials synthesized via a precipitation method. The as-precipitated samples crystallize in a tetragonal Mn₃O₄ phase with slight variation in structural parameters. Thermogravimetric analysis (TGA) reveals weight losses of 5.4 % and 3.5 % for samples prepared using NH₄OH and NH₂CONH₂, respectively. The optical band gap (E<sub>g</sub>) obtained from UV-Vis absorbance/reflectance spectra is 1.9 eV for the NH₄OH originated and 1.87 eV for the NH₂CONH₂ grown Mn₃O₄ phase materials. Notably, the latter sample reveals rather a higher near-infrared (NIR) reflectance of ∼68 % in the 1250–1750 nm range. Raman spectroscopy confirms a characteristic peak at ∼650 cm<sup>−1</sup> corresponding to the Mn–O stretching vibration of the Mn₃O₄ phase. FESEM analysis confirms highly aggregated Mn<sub>3</sub>O<sub>4</sub> nanomaterials for the role of NH<sub>4</sub>OH as precipitant whereas, nanorods embedded within spherical particles are noticed for the NH₂CONH₂ drawn Mn₃O₄ phase.</div></div>","PeriodicalId":101197,"journal":{"name":"Sustainable Chemistry One World","volume":"9 ","pages":"Article 100199"},"PeriodicalIF":0.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146187944","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Valorization of manila tamarind seed coat waste biomass for dye removal 马尼拉罗望子种皮废生物质脱除染料的研究

Sustainable Chemistry One World Pub Date : 2026-03-01 Epub Date: 2025-12-02 DOI: 10.1016/j.scowo.2025.100160

Ayush Chutani , Nitin Verma , Vivek Kumar

{"title":"Valorization of manila tamarind seed coat waste biomass for dye removal","authors":"Ayush Chutani , Nitin Verma , Vivek Kumar","doi":"10.1016/j.scowo.2025.100160","DOIUrl":"10.1016/j.scowo.2025.100160","url":null,"abstract":"<div><div>Valorization of Manila Tamarind (<em>Pithecellobium dulce</em>) seed coat as adsorbent, for Nanoparticle (NP) and Biochar synthesis was studied. Seed coat was employed in extract preparation for the green synthesis of Copper Oxide and Zinc Doped Copper Oxide nanoparticles . The retentate seed coat powder (fine and coarse) and direct seed coat powder (fine and coarse) were then further utilized to prepare Biochar (BC). Two distinct dye pollutants were selected to evaluate the efficacy of prepared adsorbents. Removal of Methylene Blue (MB) dye from aqueous solution was studied using the nanoparticle alginate beads and the adsorption parameters were analyzed, whereas the removal of Malachite Green (MG) dye from aqueous solution was studied using the Biochar followed by determination of adsorption parameters. Results showed that zinc-doped copper oxide nanoparticle alginate beads with 0.2 M doping concentration had the highest removal of 94 % with 2 g/L dosage, 50 mg/L initial dye concentration at pH 6 with 8 h of contact time, at 25°C temperature. The adsorption process followed the Langmuir isotherm model and the Intraparticle diffusion kinetic model. Biochar synthesized from fine seed coat powder used in the extract preparation showed the highest removal of 99.58 % at 50 mg/L initial MG concentration at 25°C, 150 rpm, 1.5 g/L dosage, and 4 hr of contact time. In a nutshell, it provides an efficacious way for utilizing biomass as biochar & nanoparticles to manage solid waste and simultaneously treat toxic dye based liquid effluents.</div></div>","PeriodicalId":101197,"journal":{"name":"Sustainable Chemistry One World","volume":"9 ","pages":"Article 100160"},"PeriodicalIF":0.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145685079","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Valorization of pretreated sawdust and poultry manure for biogas and digestate organic fertilizer production 预处理木屑和家禽粪便用于沼气和消化有机肥生产的增值

Sustainable Chemistry One World Pub Date : 2026-03-01 Epub Date: 2026-02-28 DOI: 10.1016/j.scowo.2026.100203

O.S. Oladejo , S.O. Dahunsi , E.L. Odekanle , F.D. Olaoluwa , T.D. Ojewole , O.J. Aladegboye , O.O. Oluyide , D.O. Ibiwoye , O.A. Akinsola , O.T. Akinola , M.N. Eze , P.J. Ndako , A.A. Asafa , K.F. Akinloye , O.M. Alabi , A.O. Oguntunji , T.E. Lawal , T.O. Ogunbode , R.A. Ibikunle

{"title":"Valorization of pretreated sawdust and poultry manure for biogas and digestate organic fertilizer production","authors":"O.S. Oladejo , S.O. Dahunsi , E.L. Odekanle , F.D. Olaoluwa , T.D. Ojewole , O.J. Aladegboye , O.O. Oluyide , D.O. Ibiwoye , O.A. Akinsola , O.T. Akinola , M.N. Eze , P.J. Ndako , A.A. Asafa , K.F. Akinloye , O.M. Alabi , A.O. Oguntunji , T.E. Lawal , T.O. Ogunbode , R.A. Ibikunle","doi":"10.1016/j.scowo.2026.100203","DOIUrl":"10.1016/j.scowo.2026.100203","url":null,"abstract":"<div><div>This study evaluated the effect of alkaline and biological pretreatment on the co-digestion of sawdust (SD) and poultry manure (PM) for enhanced biogas production and digestate nutrient recovery. Sawdust was divided into two portions and pretreated either with sodium hydroxide (NaOH) (Sample A) or biologically using cattle rumen inoculum (Sample B) prior to anaerobic digestion under mesophilic conditions (35 days) in a 6-L batch reactor. The alkaline-pretreated substrate (Sample A) produced significantly higher cumulative biogas yield (9.37 L; average 0.52 L/day) compared to the biologically pretreated substrate (Sample B) (5.38 L; average 0.30 L/day), representing a 42% increase. Methane content was also higher in Sample A (69.08%) than in Sample B (62.13%). Structural analysis showed substantial lignin and cellulose reduction after pretreatment, particularly under alkaline conditions, which enhanced substrate digestibility. The resulting digestates were rich in macro- and micronutrients, indicating strong potential for agricultural application as biofertilizers. The findings demonstrate that alkaline pretreatment significantly improves lignocellulosic biodegradability and biogas yield, supporting sustainable waste-to-energy and nutrient recovery strategies in developing regions.</div></div>","PeriodicalId":101197,"journal":{"name":"Sustainable Chemistry One World","volume":"9 ","pages":"Article 100203"},"PeriodicalIF":0.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147394893","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Red amaranth betacyanin–incorporated Cs/PVA colorimetric films as smart sensors for real-time fish freshness monitoring 红苋菜甜菜花青素- Cs/PVA比色膜作为实时鱼类新鲜度监测的智能传感器

Sustainable Chemistry One World Pub Date : 2026-03-01 Epub Date: 2026-01-15 DOI: 10.1016/j.scowo.2026.100190

Alfianita Nuril Hidayaty , Saidun Fiddaroini , Ahmad Luthfi Fahmi , Dea Luthfianti Maharani , Qonitah Fardiyah , Arie Srihardyastutie , Akhmad Sabarudin

{"title":"Red amaranth betacyanin–incorporated Cs/PVA colorimetric films as smart sensors for real-time fish freshness monitoring","authors":"Alfianita Nuril Hidayaty , Saidun Fiddaroini , Ahmad Luthfi Fahmi , Dea Luthfianti Maharani , Qonitah Fardiyah , Arie Srihardyastutie , Akhmad Sabarudin","doi":"10.1016/j.scowo.2026.100190","DOIUrl":"10.1016/j.scowo.2026.100190","url":null,"abstract":"<div><div>Ensuring fish freshness is critical for food safety, yet conventional assessment methods are destructive and unsuitable for real-time monitoring. This study develops a pH-responsive colorimetric film based on a chitosan–polyvinyl alcohol (Cs/PVA) matrix incorporated with red amaranth (<em>Amaranthus tricolor</em> L.) leaves extract (RAE), a highly betacyanin-rich natural pigment source. LC-HRMS analysis identified betacyanin (C₃₀H₃₄N₂O₁₉) as the dominant metabolite with the highest ion area (1.15 ×10 ¹⁰), alongside phenolics, carotenoids, and alkaloids that may enhance stability and responsiveness. UV–Vis characterization revealed a strong absorption peak at 535 nm and a total betacyanin content of 261 mg/L, with marked spectral shifts and color degradation above pH 9. Five film formulations were produced by varying extract volume of 1–5 mL (RAE1–RAE5), corresponding to 0.261–1.305 mg/L betacyanin. Film thickness increased with pigment loading (0.085 ± 0.01–0.138 ± 0.02 mm). FESEM revealed improved uniformity in RAE4, while FTIR confirmed strong hydrogen-bonding interactions between betacyanin and the Cs/PVA matrix. The films displayed distinct color transitions across pH 5–9, with ΔE values exceeding 50 for RAE4 and RAE5. Ammonia-vapor assays demonstrated high sensitivity, achieving > 50 % response within 180 min at 1 % NH₃. Application to tilapia fillets stored under refrigerated (6 ± 1 °C, 11 days) and ambient (23 ± 1 °C, 24 h) conditions showed strong correlation between film responses, pH elevation, and sensory quality decline. These findings establish red amaranth as a potent natural pigment and identify Cs/PVA-RAE4 and Cs/PVA-RAE5 films as sensitive, stable, and scalable freshness indicators suitable for real-time food monitoring.</div></div>","PeriodicalId":101197,"journal":{"name":"Sustainable Chemistry One World","volume":"9 ","pages":"Article 100190"},"PeriodicalIF":0.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145977070","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0