Open Chemistry最新文献

Study on the CO ₂ absorption performance of deep eutectic solvents formed by superbase DBN and weak acid diethylene glycol 超碱DBN与弱酸二甘醇形成的深度共晶溶剂吸收co2性能的研究

4区化学

Open Chemistry Pub Date : 2025-01-01 DOI: 10.1515/chem-2025-0146

Shihong Guo, Xinliang Zhou, Chengfang Liu, Shuie Li

{"title":"Study on the CO <sub>2</sub> absorption performance of deep eutectic solvents formed by superbase DBN and weak acid diethylene glycol","authors":"Shihong Guo, Xinliang Zhou, Chengfang Liu, Shuie Li","doi":"10.1515/chem-2025-0146","DOIUrl":"https://doi.org/10.1515/chem-2025-0146","url":null,"abstract":"Abstract Deep eutectic solvents (DESs), a new class of green solvents, have attracted considerable attention for CO 2 capture. In this study, we synthesised DESs using a superbase, 1,5-diazabicyclo [4.3.0] non-5-ene (DBN), as the hydrogen bond acceptor and a weak acid, diethylene glycol (DEG), as the hydrogen bond donor in different molar ratios to achieve efficient and reversible CO 2 absorption. Experimental results indicate that DES2 (DBN:DEG = 1:2) exhibits optimal CO 2 absorption performance (a maximum absorption capacity of 0.275 gCO 2 /gDES. Deep eutectic solvents at 30°C and flow rate of 30 mL/min). Nuclear magnetic resonance (NMR) spectroscopy reveals that DEG activated by DBN in DESs can react with CO 2 to form carbonates, thereby enabling CO 2 capture. In addition, monoethanolamine was added to the DESs as a promoter, thereby enhancing the CO 2 absorption performance, with a maximum absorption capacity of 0.316 gCO 2 /gDES. 13 C NMR and Fourier transform infrared analyses revealed that the amino and hydroxyl groups in the DESs can simultaneously react with CO 2 to form carbamate and carbonate, achieving synergistic absorption.","PeriodicalId":19520,"journal":{"name":"Open Chemistry","volume":"23 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.degruyterbrill.com/document/doi/10.1515/chem-2025-0146/pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147333719","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Green synthesis of ZIF-8 for selective adsorption of dyes in water purification 绿色合成ZIF-8对水中染料的选择性吸附

4区化学

Open Chemistry Pub Date : 2025-01-01 DOI: 10.1515/chem-2025-0140

Zhengyao Zhang, Kui Sun, Yuqi Bao, Lei Hong, Jun Yang

引用次数: 3

Preparation, characterization, and determination of the therapeutic effects of copper nanoparticles green-formulated by Pistacia atlantica in diabetes-induced cardiac dysfunction in rat 楷树绿色配方纳米铜粒子的制备、表征及对糖尿病诱发的大鼠心功能不全的治疗效果测定

IF 2.3 4区化学

Open Chemistry Pub Date : 2024-09-13 DOI: 10.1515/chem-2024-0071

Jiayue Lin, Yang Jiang, Xu Zhou, Ting Zhang, Xu Yan

{"title":"Preparation, characterization, and determination of the therapeutic effects of copper nanoparticles green-formulated by Pistacia atlantica in diabetes-induced cardiac dysfunction in rat","authors":"Jiayue Lin, Yang Jiang, Xu Zhou, Ting Zhang, Xu Yan","doi":"10.1515/chem-2024-0071","DOIUrl":"https://doi.org/10.1515/chem-2024-0071","url":null,"abstract":"The development and creation of innovative therapeutic supplements and medications with extraordinary efficacy for addressing severe diabetes are of utmost importance to both developing and developed nations. A bio-inspired method has been documented for producing copper nanoparticles (CuNPs) using Pistacia atlantica leaf extract as a natural stabilizing agent. This approach is applicable, easy, and environmentally friendly, as it avoids using any toxic or harmful reagents. The CuNPs that were synthesized through biological processes underwent characterization using sophisticated physicochemical methods such as energy-dispersive X-ray spectroscopy, transmission electron microscopy, field emission-scanning electron microscopy, and Fourier-transformed infrared spectroscopy. It is confirmed that CuNPs exhibit a spherical structure, with an average size ranging from approximately 30 to 70 nm. Diabetes was induced in vivo through a fructose-enriched diet combined with streptozotocin. Half the subjects were administered CuNPs (100 µg/kg) via oral gavage. In contrast to the animals that were given regular food, the diabetic animals revealed an increase in serum fasting glucose level and a decrease in glucose tolerance. The administration of CuNPs had a significant impact on reducing glucose intolerance and fasting hyperglycemia. Additionally, it helped alleviate the negative effects of diabetes on cardiac output and work. Furthermore, utilizing CuNPs effectively hindered the rise in cardiac signal transducer and activator of transcription 3-phosphorylation caused by diabetes. The findings from this investigation provide evidence of the therapeutic benefits of CuNPs in mitigating diabetes-induced cardiac dysfunction in rats.","PeriodicalId":19520,"journal":{"name":"Open Chemistry","volume":"16 1","pages":""},"PeriodicalIF":2.3,"publicationDate":"2024-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142256667","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}

引用次数: 0

Scrutinizing the effect of additive and synergistic antibiotics against carbapenem-resistant Pseudomonas aeruginosa 研究添加抗生素和协同抗生素对耐碳青霉烯类铜绿假单胞菌的影响

IF 2.3 4区化学

Open Chemistry Pub Date : 2024-09-12 DOI: 10.1515/chem-2024-0074

Fatima Siddiqui, Nureen Zahra, Basit Zeshan, Ayaz Ali Khan, Abid Sarwar, Tariq Aziz, Metab Alharbi, Abdulrahman Alshammari

{"title":"Scrutinizing the effect of additive and synergistic antibiotics against carbapenem-resistant Pseudomonas aeruginosa","authors":"Fatima Siddiqui, Nureen Zahra, Basit Zeshan, Ayaz Ali Khan, Abid Sarwar, Tariq Aziz, Metab Alharbi, Abdulrahman Alshammari","doi":"10.1515/chem-2024-0074","DOIUrl":"https://doi.org/10.1515/chem-2024-0074","url":null,"abstract":"Pseudomonas aeruginosa causes many infections worldwide. Multidrug-resistant bacteria are mostly watched in hospital-acquired infections and are linked with high mortality rates. This study aims to find a possible cure for P. aeruginosa by using an additive and synergistic combination of drugs. The Carbapenem-resistant P. aeruginosa were isolated and identified by using clinical and laboratory standards institute protocols and their antibiotic susceptibility testing was performed by using disc and well diffusion method. In computational analysis, all of the ligands and proteins were selected and docking was done using PYRX. Hundred samples were taken of isolated Gram-negative bacteria of which 25% were P. aeruginosa. Additive combinations (meropenem [MPM] + tobramycin [TOB] was 100% sensitive and imipenem + TOB was also 100% sensitive) and synergistic combinations (MPM + ciprofloxacin were 90% sensitive and amikacin and imipenem) were 100% sensitive according to CLSI protocol. In computational analysis, TOB gave the highest binding energy of −11.4, whereas MPM shows a binding energy of −9.3. In conclusion, Additive and synergistic combination of drugs showed good antibacterial activity against Pseudomonas aeruginosa. Hence it can be used as a good treatment option for P. aeruginosa.","PeriodicalId":19520,"journal":{"name":"Open Chemistry","volume":"27 1","pages":""},"PeriodicalIF":2.3,"publicationDate":"2024-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142225545","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}

引用次数: 0

Development and characterization of functional low-fat frozen dairy dessert enhanced with dried lemongrass powder 添加了香茅干粉的功能性低脂冷冻乳制品甜点的开发与表征

IF 2.3 4区化学

Open Chemistry Pub Date : 2024-09-05 DOI: 10.1515/chem-2024-0081

Rafik A. M. Khalil, Talaat H. El-Sawah, Tawfiq Alsulami, Ayah T. Zaidalkilani, Ammar Al-Farga, Wael F. Elkot

{"title":"Development and characterization of functional low-fat frozen dairy dessert enhanced with dried lemongrass powder","authors":"Rafik A. M. Khalil, Talaat H. El-Sawah, Tawfiq Alsulami, Ayah T. Zaidalkilani, Ammar Al-Farga, Wael F. Elkot","doi":"10.1515/chem-2024-0081","DOIUrl":"https://doi.org/10.1515/chem-2024-0081","url":null,"abstract":"Dried lemongrass (DLG) herb is high in total phenolic compounds (1,388 mg gallic acid equivalent/100 g), antioxidant scavenging activity (57.88%), and dietary fibers (19.61%), and it also imparts lemon flavor, minerals, and several health benefits. Therefore, it is considered a cost-effective and functional ingredient for various food systems. A trial was conducted to incorporate DLG into a functional low-fat lemon frozen dessert as a fat mimetic and to assess its impacts on physicochemical, rheological, total phenolic compounds, antioxidant scavenging activity, sensory properties, and production costs. A control full-fat frozen dairy dessert (FFD) with 6% fat was prepared for comparison. DLG was added to a low-fat frozen dessert (LFD) with 1% fat at ratios of 0, 0.5, 1.0, and 1.5%. Results showed that FFD had higher rheological characteristics, melting resistance, production costs, and sensory properties compared to LFD. The use of DLG increased mix specific gravity, freezing point depression, apparent viscosity, consistency coefficient index, overrun, total phenolic compounds, and antioxidant scavenging activity while decreasing the pH value compared to LFD. Adding 0.5–1.0% DLG to LFD significantly improved overall acceptability and reduced production costs by 23.80 and 18.56%, respectively. The functional LFD with 0.5–1% DLG achieved comparable quality characteristics to the full-fat treatment.","PeriodicalId":19520,"journal":{"name":"Open Chemistry","volume":"1 1","pages":""},"PeriodicalIF":2.3,"publicationDate":"2024-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142199092","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}

引用次数: 0

Evaluating polyphenol and ascorbic acid contents, tannin removal ability, and physical properties during hydrolysis and convective hot-air drying of cashew apple powder 评估腰果苹果粉在水解和对流热风干燥过程中的多酚和抗坏血酸含量、单宁去除能力以及物理性质

IF 2.3 4区化学

Open Chemistry Pub Date : 2024-09-02 DOI: 10.1515/chem-2024-0067

Binh An Pham, Thi Yen Nhi Tran, Tung Xuan Tan Nguyen, Tan Phat Dao, Hoang Duy Ngo, Ngoc Duc Vu

引用次数: 0

Assessment of Se, As, Cd, Cr, Hg, and Pb content status in Ankang tea plantations of China 中国安康茶园中硒、砷、镉、铬、汞和铅含量状况评估

IF 2.3 4区化学

Open Chemistry Pub Date : 2024-08-30 DOI: 10.1515/chem-2024-0054

Huawei Ji, Pingxuan Lin, Hui Wang, Jiping Chen, Rui Ren, Aorui Li

{"title":"Assessment of Se, As, Cd, Cr, Hg, and Pb content status in Ankang tea plantations of China","authors":"Huawei Ji, Pingxuan Lin, Hui Wang, Jiping Chen, Rui Ren, Aorui Li","doi":"10.1515/chem-2024-0054","DOIUrl":"https://doi.org/10.1515/chem-2024-0054","url":null,"abstract":"Selenium (Se) is an essential trace element for humans. The Ankang tea plantation area in China is the best place for producing high-quality and Se-enriched organic tea. However, accumulation of potentially toxic elements (PTEs) in soil and tea leaves has attracted a lot of attention. Therefore, in this research, the content status of Se and five PTEs (As, Cd, Cr, Hg, and Pb) in soil and tea leaf samples collected from 88 Ankang tea plantations was studied. Results showed that the average Se content was 0.17 mg kg −1 and the Se-enrichment rate was 25% for the 88 tea leaf samples, and As, Cd, Cr, Hg, and Pb contents in all tea leaf samples met the Chinese standard for pollution-free tea except for 11.2% excess Cr in only one sample. Cd concentrations in 56.82% soil samples exceeded the Chinese risk screening value for soil contamination of the agricultural land, and therefore the pollution degree of Cd is high in these soil samples. Moreover, the Hakanson potential ecological risk assessment of soil As, Cd, Cr, Hg, and Pb indicated that the Ankang tea plantation area was at a medium potential ecological risk level. These results will provide theoretical support for ecological risk management and safe production of Se-enriched tea in Ankang Se-enriched tea plantations.","PeriodicalId":19520,"journal":{"name":"Open Chemistry","volume":"42 1","pages":""},"PeriodicalIF":2.3,"publicationDate":"2024-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142225548","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}

引用次数: 0

Effect of transition metal chloride (ZnCl2) on low-temperature pyrolysis of high ash bituminous coal 过渡金属氯化物（ZnCl2）对高灰分烟煤低温热解的影响

IF 2.3 4区化学

Open Chemistry Pub Date : 2024-08-30 DOI: 10.1515/chem-2024-0077

Deepak Singh Panwar, Ram Chandra Chaurasia, Bhupendra Singh Ken, Balraj Krishnan Tudu, Vishal Shah, Jigesh Mehta, Abhinav Kumar, Mushtaq Ahmad Ansari, Lakshmaiya Natrayan, Ishfaq Ahmed Malik

{"title":"Effect of transition metal chloride (ZnCl2) on low-temperature pyrolysis of high ash bituminous coal","authors":"Deepak Singh Panwar, Ram Chandra Chaurasia, Bhupendra Singh Ken, Balraj Krishnan Tudu, Vishal Shah, Jigesh Mehta, Abhinav Kumar, Mushtaq Ahmad Ansari, Lakshmaiya Natrayan, Ishfaq Ahmed Malik","doi":"10.1515/chem-2024-0077","DOIUrl":"https://doi.org/10.1515/chem-2024-0077","url":null,"abstract":"Concerns about pollution and global warming have grown in recent years. Efficient coal use is critical for reducing the environmental toll of fossil fuel consumption. This study aims to examine how transition metal chlorides affect the burn-off rate and thermal conversion efficiency of bituminous coal with a high ash content. The analytical methods used include proximate, thermo-gravimetric, morphological, and pyrolysis analyses. This research examined the effect of change in the carbonization temperature, carbonization time, and catalyst concentration on the thermal degradation of high-ash bituminous coal impregnated with ZnCl2. At various ratios, zinc chloride solution was adsorbed onto the coal surface. The treated coal was then heated at different temperatures ranging from 510 to 710°C, under atmospheric pressure, in a furnace without air. This process was carried out to enhance the rate of burnout or pyrolysis. The response surface approach reveals that the carbonization time is a crucial input parameter, followed by the carbonization temperature and catalyst concentration. The response surface methodology analysis yielded a coefficient of determination of 0.9734.","PeriodicalId":19520,"journal":{"name":"Open Chemistry","volume":"5 1","pages":""},"PeriodicalIF":2.3,"publicationDate":"2024-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142225547","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}

引用次数: 0

Development and characterization of new ecological adsorbents based on cardoon wastes: Application to brilliant green adsorption 基于牛蒡废弃物的新型生态吸附剂的开发与表征：应用于绿色吸附

IF 2.3 4区化学

Open Chemistry Pub Date : 2024-08-29 DOI: 10.1515/chem-2024-0078

Meryem Hajji Nabih, Hamza Boulika, Maryam El Hajam, Noureddine Idrissi Kandri, Maryam M. Alomran, Fehmi Boufahja

引用次数: 0

A fast, sensitive, greener, and stability-indicating HPLC method for the standardization and quantitative determination of chlorhexidine acetate in commercial products 一种快速、灵敏、绿色、稳定的高效液相色谱法，用于商业产品中醋酸洗必泰的标准化和定量测定

IF 2.3 4区化学

Open Chemistry Pub Date : 2024-08-29 DOI: 10.1515/chem-2024-0079

Norah Alanazi, Nazrul Haq, Ibrahim A. Alsarra, Faiyaz Shakeel

{"title":"A fast, sensitive, greener, and stability-indicating HPLC method for the standardization and quantitative determination of chlorhexidine acetate in commercial products","authors":"Norah Alanazi, Nazrul Haq, Ibrahim A. Alsarra, Faiyaz Shakeel","doi":"10.1515/chem-2024-0079","DOIUrl":"https://doi.org/10.1515/chem-2024-0079","url":null,"abstract":"The goal of the proposed work was to create and verify a fast, sensitive, greener, and stability-indicating high-performance liquid chromatography (HPLC) method to quantify chlorhexidine acetate (CHDA) in commercial products. The developed method was validated for numerous validation metrics and greenness. The greener mobile phase was made up of a ternary mixture of ethanol, water, and glacial acetic acid (50:49:1 v/v/v). CHDA was detected at a wavelength of 265 nm. The developed HPLC method showed a coefficient of determination of 0.9981 and was linear in the 1–100 µg/mL range. In addition, the developed method for CHDA analysis was rapid, accurate, precise, robust, and sensitive. The outstanding greenness profile was indicated by the derived values of the Analytical Eco-Scale, ChlorTox, and AGREE scales for the current approach, which are 89, 0.74 g, and 0.77, respectively. With its breakdown products present, the proposed analytical approach was still able to identify CHDA, demonstrating its selectivity- and stability-indicating qualities. Two distinct commercial products, A and B, were found to contain 1.96 and 2.05% w/v of CHDA, respectively. These results revealed that CHDA in commercially accessible products can be routinely standardized and quantified using the proposed HPLC approach.","PeriodicalId":19520,"journal":{"name":"Open Chemistry","volume":"62 1","pages":""},"PeriodicalIF":2.3,"publicationDate":"2024-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142225572","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}

引用次数: 0