Chemical PapersPub Date : 2025-03-26DOI: 10.1007/s11696-025-03998-6
K. R. Shylaja, Kalyan Raj, H. A. Deepa, Neelam Patil Radhika, S. Malini
{"title":"Synergism in isoconazole-loaded nano-bismuth oxide formulation: exploration of structural characterization, enhanced antimicrobial performance and kinetics","authors":"K. R. Shylaja, Kalyan Raj, H. A. Deepa, Neelam Patil Radhika, S. Malini","doi":"10.1007/s11696-025-03998-6","DOIUrl":"10.1007/s11696-025-03998-6","url":null,"abstract":"<div><p>Drug-loaded nanoformulations exert numerous beneficial synergistic effects such as minimised toxicity and maximised bioavailability to combat drug resistance and achieve enhanced drug delivery. The current study explores the synthesis and enhanced antimicrobial behaviour of nano-Bi<sub>2</sub>O<sub>3</sub> loaded with Isoconazole. Bi<sub>2</sub>O<sub>3</sub> nanoparticles-Isoconazole formulation was characterised using XRD, FTIR in the range 500–4000 cm<sup>−1</sup>, SEM, EDX and UV analysis. The association of Bi<sub>2</sub>O<sub>3</sub> nanoparticles (Bi<sub>2</sub>O<sub>3</sub> NPs) with Isoconazole was revealed by XRD through peaks that match with tetragonal structure of β-Bi<sub>2</sub>O<sub>3</sub> for pure Bi<sub>2</sub>O<sub>3</sub> nanoparticles and altered dominant peaks after loading. Similarly, scanning electron microscopy conveyed detectable morphological changes along with average particle size elevating from 47.11 to 70.79 nm upon loading. Brunauer–Emmett–Teller curves indicated a reduced quantity of adsorbed nitrogen with surface area, pore volume and pore diameter of Bi<sub>2</sub>O<sub>3</sub> NPs decreasing from 7.23 m<sup>2</sup>/g, 6.98 × 10<sup>−3</sup> cm<sup>3</sup>/g and 22 nm to 4.11 m<sup>2</sup>/g, 4.94 × 10<sup>−3</sup> cm<sup>3</sup>/g and 18.011 nm, respectively. Also, significant changes in the signals of <sup>1</sup>H NMR upon loading Bi<sub>2</sub>O<sub>3</sub> NPs with Isoconazole were observed. UV analysis showed a bandgap of 2.6 eV, and the peak underwent red shift upon loading Isoconazole. An appreciable loading efficiency and loading capacity is reported along with release kinetics pattern following Higuchi plot based on Fickian diffusion. Enhanced planktonic antibacterial activity of Bi<sub>2</sub>O<sub>3</sub>-Isoconazole formulation as compared to pure Bi<sub>2</sub>O<sub>3</sub> and Isoconazole was found using zone inhibition. Also, antibiofilm activity by crystal violet assay was examined for minimum inhibitory concentration and minimum bactericidal concentration. Antifungal activity of 7.4–9.9 mm inhibition for concentrations of 5–75 μL with % growth inhibition of 98.3 and 95, respectively, was obtained by zone inhibition method and poison food technique. The antimicrobial studies based on the experimental evidences provide an insight into the behaviour of the new formulation that offers a cost-effective technique against new infections and works in a fairly suitable time frame.</p></div>","PeriodicalId":513,"journal":{"name":"Chemical Papers","volume":"79 5","pages":"3183 - 3203"},"PeriodicalIF":2.2,"publicationDate":"2025-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143930008","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Selection of the suitable extraction solvent to improve phenolic content and antioxidant activity in some Algerian black olive varieties","authors":"Abderrahmane Mokrani, Lounes Chaouch, Khaled Messaoudene","doi":"10.1007/s11696-025-04009-4","DOIUrl":"10.1007/s11696-025-04009-4","url":null,"abstract":"<div><p>This study aims to investigate the effects of extraction solvent on the extraction of phenolic compounds (total phenolic content; TPC, total flavonoid content; TFC, and total flavonol content; TFLC) and the antioxidant activities (total antioxidant activity; TAA, DPPH radical-scavenging activity; DPPH-RSA, ABTS radical-scavenging activity; ABTS-RSA, ferric reducing power; FRP, and iron chelating activity; ICA) of three Algerian black olive varieties (Aharoune, Bouchouk, and Sigoise) cultivated in the region of Bejaia (Algeria). The results indicated that both cultivar and extraction solvent significantly (<i>p</i> < 0.05) affected the TPC, TFC, TFLC, and the antioxidant activities (TAA, DPPH-RSA, ABTS-RSA, FRP, and ICA). Notably, the TPC of olive fruits showed the highest ranges (2.3–4.2 g GAE/100 g DW) when extracted in 60% acetone, followed by 60% ethanol (2.3–3.8 g GAE/100 g DW) and water (1.9–2.3 g GAE/100 g DW). Pearson correlation analysis showed a good positive linear correlation between phenolic compounds and antioxidant activities, indicating that the phenolic compounds in black olives are the main contributors to their antioxidant potential. These findings support the idea that black olives are a good source of phenolic compounds with high antioxidant activities, namely antiradical scavenger activity, ferric reducing power, and iron chelating activity. Therefore, black olive extracts could serve as valuable natural products beneficial to human health, making them a promising alternative to synthetic antioxidants in various applications, including food, cosmetics, and pharmaceuticals.</p></div>","PeriodicalId":513,"journal":{"name":"Chemical Papers","volume":"79 5","pages":"3351 - 3363"},"PeriodicalIF":2.2,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143929951","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Chemical PapersPub Date : 2025-03-22DOI: 10.1007/s11696-025-04006-7
Jiahui Wang, Chen Yu, Yifei Yu, Xueqin Jiang
{"title":"Preparation of MnO2/BiVO4 composite photocatalyst materials applied in landscape-water purification design of elderly community","authors":"Jiahui Wang, Chen Yu, Yifei Yu, Xueqin Jiang","doi":"10.1007/s11696-025-04006-7","DOIUrl":"10.1007/s11696-025-04006-7","url":null,"abstract":"<div><p>Antibiotic contaminants such as tetracycline hydrochloride (TC) in landscape water of elderly communities threaten health. Antibiotics degradation in water purification leads to better environment. TC degradation by heterojunction nanocomposite for activating peroxymonosulfate (PMS) is significant. Here, MnO<sub>2</sub>/BiVO<sub>4</sub> nanocomposite catalysts were prepared by sonication and heat treatment. MnO<sub>2</sub> particles with 6–8 nm of size were uniformly distributed on BiVO<sub>4</sub> to favor rapid recombination of electron/hole pairs to improve the efficiency of PMS activation. Photocatalytic system with MnO<sub>2</sub>/BiVO<sub>4</sub> nanocomposite catalyst achieved efficient TC degradation. Optimal TC degradation conditions were [catalyst] = 0.2 g, [PMS] = 0.15 g and pH = 7. Electron paramagnetic resonance (EPR) and scavenger studies verified the occurrence of ·OH, SO<sub>4</sub><sup>·−</sup>, <sup>1</sup>O<sub>2</sub>, h<sup>+</sup>, ·O<sub>2</sub><sup>−</sup> and e<sup>−</sup> species and positive contribution of MnO<sub>2</sub>/BiVO<sub>4</sub> nanocomposite to PMS activation. MnO<sub>2</sub>/BiVO<sub>4</sub> nanocomposite exhibits good reusability in catalytic reactions. This work provides suitable photocatalytic materials for TC treatment in senior community landscape water.</p></div>","PeriodicalId":513,"journal":{"name":"Chemical Papers","volume":"79 5","pages":"3309 - 3321"},"PeriodicalIF":2.2,"publicationDate":"2025-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143930093","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Chemical PapersPub Date : 2025-03-21DOI: 10.1007/s11696-025-04004-9
Venkata Sai Krishna Gaddam, Chandra Sekhar Matli
{"title":"Synthesis of a high-purity zeolite A from bagasse fly ash: optimization, characterization, and application as a low-cost adsorbent for cadmium","authors":"Venkata Sai Krishna Gaddam, Chandra Sekhar Matli","doi":"10.1007/s11696-025-04004-9","DOIUrl":"10.1007/s11696-025-04004-9","url":null,"abstract":"<div><p>The perpetual demand for sugar led to expansion of the sugar industry creating large quantities of liquid and solid waste materials. Bagasse fly ash (BFA) is one such particulate residue collected from flue gas effluent system of sugarcane bagasse-fired boiler units. The BFA is transformed into a zeolite with better adsorption capacity by optimization of synthesis parameters Si/Al, NaOH/BFA, temperature, and time. HCl pretreatment significantly enhanced the zeolite-forming components of BFA, namely SiO<sub>2</sub>, Al<sub>2</sub>O<sub>3,</sub> and Na<sub>2</sub>O from initial 77.85 to 84.24% while simultaneously reducing oxide impurities. The pretreated BFA was fused at 550 °C for 90 min followed by hydrothermal treatment under optimized conditions, including a well-adjusted Si/Al ratio of 1.1, NaOH/BFA ratio of 1:0, synthesis temperature of 100 °C, and a 6-h synthesis duration. The resulting zeolite A possessed high crystallinity of 91.89%. The synthesized zeolite A comprehensively validated through advanced characterization techniques, including X-ray diffraction (XRD), X-ray fluorescence (XRF), scanning electron microscopy (SEM), Brunauer–Emmett–Teller (BET), and Fourier transform infrared spectroscopy (FTIR) confirming its structural integrity and enhanced material properties. Analyses confirmed zeolite had a surface area of 126.24 m<sup>2</sup>/g and a cation exchange capacity (CEC) of 145.33 meq/mol. The ability of synthesized zeolite to adsorb heavy metals (HMs) was tested using Cd<sup>+2</sup> ions, with optimized parameters, namely, pH, adsorbent dosage, concentration, and contact. Under the optimized conditions, the zeolite achieved a maximum Cd<sup>+2</sup> removal of 118.20 mg/g, aligning with pseudo-second-order kinetics and the Langmuir isotherm model. Successive adsorption–desorption studies demonstrated high efficiency, with a slight reduction in subsequent cycles, highlighting the potential of BFA as a zeolite for HM removal. Thermodynamic studies confirmed the adsorption process is endothermic and spontaneous, with a positive entropy change signifying increased randomness at the solid–liquid interface. Cost analysis demonstrated that the cost of BFA-synthesized zeolites was significantly less compared to commercially available zeolites. The zeolite A derived from BFA addresses the issues of waste minimization and metal contamination alleviating environmental burden.</p></div>","PeriodicalId":513,"journal":{"name":"Chemical Papers","volume":"79 5","pages":"3273 - 3289"},"PeriodicalIF":2.2,"publicationDate":"2025-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143930087","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Chemical PapersPub Date : 2025-03-21DOI: 10.1007/s11696-025-04008-5
Ali Manizadeh, Mehdi Mehrpooya, Fathollah Pourfayaz
{"title":"Modeling and optimization of dual-fuel natural gas-DME combustion in an HCCI engine: a 3E analysis using NSGA-II","authors":"Ali Manizadeh, Mehdi Mehrpooya, Fathollah Pourfayaz","doi":"10.1007/s11696-025-04008-5","DOIUrl":"10.1007/s11696-025-04008-5","url":null,"abstract":"<div><p>This study investigates, models, and optimizes the dual combustion of dimethyl ether (DME) and natural gas (NG) fuels in an HCCI engine. Recognized for high efficiency and low emissions, HCCI engines play a vital role in reducing environmental impact. DME and NG were selected for their eco-friendly properties and potential to enhance engine performance. Key performance variables engine speed, compression ratio, equivalence ratio, initial temperature, initial pressure, and NG molar percentage in the DME-NG mixture were analyzed and used as inputs for an accurate zero-dimensional computational model. These variables were optimized using the non-dominated sorting genetic algorithm II (NSGA-II) for multi-objective optimization and the genetic algorithm (GA) for single-objective optimization. The study minimized exergy efficiency, total emissions (HC, CO, CO<sub>2</sub>), and work exergy cost. Multi-objective optimization yielded an optimal scenario with a 451.48 K initial temperature, 1501.3 rpm engine speed, 1 bar initial pressure, 0.13 NG molar percentage, 12.75 compression ratio, and 0.3 equivalence ratio, achieving a reverse exergy efficiency of 130.49 (1/<i>η</i><sub>ex</sub>), total emissions of 2.373e−04 kg, and a work exergy cost of 0.2715e−04 $ per engine cycle. Another scenario at 350 K, 1434.4 rpm, 1.19 bar, 0.333 NG molar percentage, 24.38 compression ratio, and 2.23 equivalence ratio resulted in a reverse exergy efficiency of 2.267, emissions of 0.0044 kg, and a work exergy cost of 6.1483e−04 $. Single-objective optimization revealed a reverse exergy efficiency of 2.2290, emissions of 3.6403e−24 kg, and a work exergy cost of 1.8578e−09 $. These findings highlight the critical role of optimal parameters in balancing environmental, economic, and exergy objectives for enhanced engine performance.</p></div>","PeriodicalId":513,"journal":{"name":"Chemical Papers","volume":"79 5","pages":"3323 - 3350"},"PeriodicalIF":2.2,"publicationDate":"2025-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143930086","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Chemical PapersPub Date : 2025-03-19DOI: 10.1007/s11696-025-03983-z
Khalid M. Abed, Osama A. Mohsen, Teeba M. Darwesh, Adeeb Hayyan, Yousef Mohammed Alanazi, Jehad Saleh, Wan Jeffrey Basirun, Bhaskar Sen Gupta
{"title":"Natural deep eutectic solvents as a green inhibitor of carbon steel corrosion in sulphuric acid","authors":"Khalid M. Abed, Osama A. Mohsen, Teeba M. Darwesh, Adeeb Hayyan, Yousef Mohammed Alanazi, Jehad Saleh, Wan Jeffrey Basirun, Bhaskar Sen Gupta","doi":"10.1007/s11696-025-03983-z","DOIUrl":"10.1007/s11696-025-03983-z","url":null,"abstract":"<div><p>This study reports two distinct natural deep eutectic solvents (NADESs) as novel corrosion inhibitors of carbon steel in diluted sulphuric acid (H<sub>2</sub>SO<sub>4</sub>). The investigated NADES was synthesised from lactic acid as hydrogen bond donor and glucose or D-fructose as hydrogen bond acceptors. The effects of temperature, time, inhibitor concentration, and H<sub>2</sub>SO<sub>4</sub> concentration were optimised. Then, the corrosion rate was assessed in the presence and absence of the inhibitors. The inhibition efficiency of the NADES was investigated at different temperatures. The inhibition mechanism was investigated using adsorption isotherms and kinetic models. The results indicated that 120 min, 298 K, and 0.5 mol/L of H<sub>2</sub>SO<sub>4</sub> achieved the lowest corrosion rate. NADES prepared from lactic acid and D-fructose was the most efficient solvent as a corrosion inhibitor, demonstrating an inhibition efficiency of 82% at 120 min in 0.5 mol/L H<sub>2</sub>SO<sub>4</sub> and 298 K. Furthermore, the Langmuir isotherm model closely fit the inhibition process, which suggests monolayer adsorption of green NADES on the carbon steel surface. The kinetic analysis reveals a mixed-type mechanism involving the physisorption of the green NADES inhibitors. The results provided insights into the development of benign and environmentally friendly inhibitors such as NADES in acidic media.</p></div>","PeriodicalId":513,"journal":{"name":"Chemical Papers","volume":"79 5","pages":"2995 - 3006"},"PeriodicalIF":2.2,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143929939","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Chemical PapersPub Date : 2025-03-19DOI: 10.1007/s11696-025-04001-y
Hua Li, Xiaoyuan Luo
{"title":"Preparing radiation-proof terylene garment fabric by FeS-doped Ti3C2 two-dimensional nanomaterial","authors":"Hua Li, Xiaoyuan Luo","doi":"10.1007/s11696-025-04001-y","DOIUrl":"10.1007/s11696-025-04001-y","url":null,"abstract":"<div><p>This paper concentrates on innovative preparation of FeS nanoparticles-modified Ti<sub>3</sub>C<sub>2</sub> two-dimensional nanoscale absorbing material, exploring its application potential in the field of radiation-proof polyester clothing fabrics. Through hydrothermal composite method, we successfully modified FeS nanoparticles uniformly and stably on Ti<sub>3</sub>C<sub>2</sub> nanosheets to prepare a sandwich-like FeS@Ti<sub>3</sub>C<sub>2</sub> composite. Through analyzing the phase structure and purity, the optimal preparation conditions were obtained (pH of 5, temperature of 120 ℃, holding time of 4 h, and raw material ratio of Fe:S:Ti = 1:1:1). The primary crystal phases identified were FeS and Ti<sub>3</sub>C<sub>2</sub>, both free from impurities. The electromagnetic wave (EMW) attenuation properties of FeS@Ti<sub>3</sub>C<sub>2</sub> were investigated using impedance matching, dielectric constant, complex permeability, Cole–Cole plots, and minimum reflection loss measurements. FeS@Ti<sub>3</sub>C<sub>2</sub> composite has a reflection loss of − 24.60 dB at 14.3 GHz and matching thickness of 2.2 mm. The FeS@Ti<sub>3</sub>C<sub>2</sub> material exhibits exceptional EMW absorption performance. The EMW absorption capacity of Ti<sub>3</sub>C<sub>2</sub> is significantly enhanced, allowing the composite to maintain an efficient absorbing effect across a wide frequency range. Benefiting from the high conductivity and mechanical strength of Ti<sub>3</sub>C<sub>2</sub>, the magnetic loss mechanism of FeS is introduced to achieve impedance matching and broadband absorption.</p></div>","PeriodicalId":513,"journal":{"name":"Chemical Papers","volume":"79 5","pages":"3237 - 3248"},"PeriodicalIF":2.2,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143929940","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Chemical PapersPub Date : 2025-03-18DOI: 10.1007/s11696-025-03925-9
Karuppiah Nagaraj, Chandrabose Uthra, Mohammed F. Albeshr, K. Raja, Gunasekaran Velmurugan
{"title":"A comparative study of methanol and aqueous extracts of Cucumis trigonus: phytochemical composition, antioxidant, antimicrobial, and cytotoxic activities","authors":"Karuppiah Nagaraj, Chandrabose Uthra, Mohammed F. Albeshr, K. Raja, Gunasekaran Velmurugan","doi":"10.1007/s11696-025-03925-9","DOIUrl":"10.1007/s11696-025-03925-9","url":null,"abstract":"<div><p>The method was used to evaluate the phytochemical composition, antioxidant, cytotoxicity, and antimicrobial potential of methanolic and aqueous extracts from the fruit of <i>Cucumis trigonus</i>. Qualitative phytochemical screening revealed the presence of alkaloids, saponins, flavonoids, and tannins, all of which are known for their therapeutic properties, including antioxidant, anti-inflammatory, and antimicrobial effects. Antioxidant activity assays, including 2,2-diphenyl-1-picrylhydrazyl (DPPH), hydrogen peroxide, lipid peroxidation, 2,2′-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid (ABTS), and alkaline DMSO assays, demonstrated concentration-dependent scavenging activity in both extracts, with the methanolic extract generally exhibiting higher antioxidant efficacy. Additionally, the methanolic extract displayed superior lipid peroxidation inhibition, particularly in egg lecithin assays, indicating its potential to prevent oxidative damage. The antimicrobial assessment showed the aqueous extract had significant inhibitory effects on gram-positive bacteria (<i>Bacillus subtilis</i> and <i>Streptococcus aureus</i>) and selected fungi (Aspergillus niger and Candida albicans), outperforming the methanolic extract. The minimum inhibitory concentration (MIC) was determined through a twofold serial dilution method. Cytotoxicity was assessed using A549 and Hep G2 cell lines, revealing significant cell viability reduction in both cancer cell lines. Methanol showed potent activity against A549 with IC<sub>50</sub> value of 171 ug/ul, and aqueous showed potent activity against HEPG-2 with IC<sub>50</sub> value of 40 ug/ul.</p></div>","PeriodicalId":513,"journal":{"name":"Chemical Papers","volume":"79 4","pages":"2287 - 2298"},"PeriodicalIF":2.2,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143769901","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Optimization of ultrasonic-microwave synergistic extraction of cordycepin and antioxidant activity from Cordyceps militaris mycelial symbiont","authors":"Yihan Zhang, Mouyan Liu, Shengdan Liu, Wangqi Zhang, Huazhong Yu","doi":"10.1007/s11696-025-03991-z","DOIUrl":"10.1007/s11696-025-03991-z","url":null,"abstract":"<div><p>In this study, ultrasonic-microwave synergistic extraction (UMSE) was employed to extract cordycepin from <i>Cordyceps militaris mycelial symbiont</i>. The effects of extraction temperature, extraction time, solid–liquid ratio, ultrasonic power, and microwave power on the extraction of cordycepin were investigated. Using Plackett–Burman design, the significant factors affecting cordycepin content were identified as extraction temperature, solid–liquid ratio, and extraction time. Box–Behnken design was then used to evaluate the interactive effects of these significant factors, and the optimal extraction conditions were determined as follows: solid–liquid ratio of 1:30 g/mL, extraction temperature of 60 °C, extraction time of 29 min, ultrasonic power of 350 W, and microwave power of 350 W. Under the optimal conditions, the cordycepin content reached 6.95 ± 0.05 mg/g. The extract of cordycepin from <i>Cordyceps militaris mycelial symbiont</i> demonstrated greater antioxidant scavenging efficacy against ABTS· radicals than against DPPH· radicals. Compared to traditional extraction methods, UMSE exhibited better antioxidant capacity. Although the scavenging abilities of the cordycepin extract against DPPH· and ABTS· increased with the concentration, compared with VC, the scavenging capacities were not significant.</p></div>","PeriodicalId":513,"journal":{"name":"Chemical Papers","volume":"79 5","pages":"3107 - 3119"},"PeriodicalIF":2.2,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143929934","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Chemical PapersPub Date : 2025-03-18DOI: 10.1007/s11696-025-03992-y
Fazil Nazir, Anupam Agarwal
{"title":"Correction: Functionalization of Tinospora cordifolia stem waste charcoal (FTCC) and its utilization for decontamination of water","authors":"Fazil Nazir, Anupam Agarwal","doi":"10.1007/s11696-025-03992-y","DOIUrl":"10.1007/s11696-025-03992-y","url":null,"abstract":"","PeriodicalId":513,"journal":{"name":"Chemical Papers","volume":"79 4","pages":"2639 - 2642"},"PeriodicalIF":2.2,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143769926","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}