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Comparison of physicochemical and biochemical analysis of aronia powders conversed by microwave and hybrid systems 用微波和混合系统对话海棠粉的理化和生化分析比较
IF 2.2 4区 化学
Chemical Papers Pub Date : 2024-07-17 DOI: 10.1007/s11696-024-03605-0
Muhammed Taşova, Muhammed Rahmetullah Çiğdem, Samet Kaya Dursun, Onur Saraçoğlu
{"title":"Comparison of physicochemical and biochemical analysis of aronia powders conversed by microwave and hybrid systems","authors":"Muhammed Taşova, Muhammed Rahmetullah Çiğdem, Samet Kaya Dursun, Onur Saraçoğlu","doi":"10.1007/s11696-024-03605-0","DOIUrl":"https://doi.org/10.1007/s11696-024-03605-0","url":null,"abstract":"<p>In this study, determining the physical and chemical properties of the powders obtained by producing fruit powder from the Viking and Nero varieties of aronia fruit and it was aimed to determine which drying method is more suitable in terms of both quality and energy in the production of aronia fruit powder. The highest drying rate values were determined in Nero variety with 6.02 × 10<sup>−2</sup> − 3.05 × 10<sup>−1</sup> g moisture/g dry matter min. The effective moisture diffusion values of the Viking cultivar varied between 4.30 × 10<sup>−7</sup> and 2.53 × 10<sup>−6</sup>m<sup>2</sup>s<sup>−1</sup>. The lowest activation energy value was determined as 35.87 kJ/mol in the MACD method in the Viking variety. The best carr index values were determined when dried at 350W + 70 °C drying conditions and the carr index value of the fruit powders was in the “poor” category. The best hausner index value was found to be at the “excellent” level. The <i>L</i>, <i>a</i> and <i>b</i> values of Viking and Nero varieties were numerically affected by the drying processes. The highest chroma value for both varieties was determined in the 350W + 70 °C method. The specific moisture absorption rate and specific energy consumption values of the Nero cultivar were found to vary between 6.04 × 10<sup>−3</sup>–1.59 × 10<sup>−2</sup> kg/kWh and 62.68–165.43kWh/kg. In the Viking variety, total phenol, monomeric anthocyanin, and antioxidant contents range from 9.366 mg GAE g<sup>−1</sup> fw to 37.667 mg GAE g<sup>−1</sup> dw, 0.712 mg g<sup>−1</sup> fw to 4.985 mg g<sup>−1</sup> dw, 6.12 µmol TE g<sup>−1</sup> fw to 272.41 µmol TE g<sup>−1</sup> dw. The total flavonoid content in the Nero variety ranges from 1.597 g CE L<sup>−1</sup> fw to 19.184 g CE L<sup>−1</sup> dw.</p><h3 data-test=\"abstract-sub-heading\">Graphical abstract</h3>\u0000","PeriodicalId":513,"journal":{"name":"Chemical Papers","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2024-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141741623","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
A nanocopper oxide supported on montmorillonite: synthesis and characterization as a green viscosity index improver additive 蒙脱石支撑的纳米氧化铜:作为绿色粘度指数改进剂添加剂的合成与表征
IF 2.2 4区 化学
Chemical Papers Pub Date : 2024-07-17 DOI: 10.1007/s11696-024-03595-z
Rasha S. Kamal, Reem K. Farag, Gunasunderi Raju, Jimmy Nelson Appaturi
{"title":"A nanocopper oxide supported on montmorillonite: synthesis and characterization as a green viscosity index improver additive","authors":"Rasha S. Kamal, Reem K. Farag, Gunasunderi Raju, Jimmy Nelson Appaturi","doi":"10.1007/s11696-024-03595-z","DOIUrl":"https://doi.org/10.1007/s11696-024-03595-z","url":null,"abstract":"<p>Polymer nanocomposites have attracted substantial interest in the field of lubricants due to their improved properties compared to neat polymers. However, creating environmentally friendly lubricating additives with outstanding tribological qualities with higher sliding speeds under higher friction conditions remains a challenge. Therefore, the aim of this work is to develop and evaluate polymeric nanocomposite compounds, which primarily contain montmorillonite as viscosity index improver lube oil additives, at various ratios of the used polymeric nanocomposites (0.25%, 0.5%, 1%, 2%, and 3%). This is achieved by preparing 15 samples with various ratios of 1-dodecene and acrylamide, as well as various concentrations of the prepared nanoparticles (0%, 0.5%, 1%, 2%, and 3%). The particle size and size distribution of nanoclay-based samples were determined by dynamic light scattering using Zeta Sizer Nano at 25 °C. The molecular structure, content, and purity of the samples were determined using FTIR and NMR spectrometer. Thermal stability was studied using thermogravimetric analysis, differential thermal analysis, and differential scanning calorimetry. All of the prepared compounds were evaluated as viscosity index improvers before their rheological properties were studied. A comparison study of various other viscosity index improvers revealed that sample of 3% E12 has a Newtonian liquid behavior than commercial ones.</p>","PeriodicalId":513,"journal":{"name":"Chemical Papers","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2024-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141717703","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
Carboxymethylcellulose stabilized ZnO nanoparticles: an efficient nano-nutrient for the growth and development of Trigonella foenum-graecum (fenugreek) seeds 羧甲基纤维素稳定的氧化锌纳米颗粒:促进葫芦巴种子生长和发育的高效纳米营养物质
IF 2.2 4区 化学
Chemical Papers Pub Date : 2024-07-12 DOI: 10.1007/s11696-024-03584-2
Mani Prabha, Tulika Malviya, Shehala, Ashok Kumar, Puneet Tiwari, Vandana Singh
{"title":"Carboxymethylcellulose stabilized ZnO nanoparticles: an efficient nano-nutrient for the growth and development of Trigonella foenum-graecum (fenugreek) seeds","authors":"Mani Prabha, Tulika Malviya, Shehala, Ashok Kumar, Puneet Tiwari, Vandana Singh","doi":"10.1007/s11696-024-03584-2","DOIUrl":"https://doi.org/10.1007/s11696-024-03584-2","url":null,"abstract":"<p>In the present study, carboxymethyl cellulose-capped ZnO nanoparticles (CMC@ZnO NPs) have been synthesized using the co-precipitation method where the CMC behaved as a stabilizing and capping agent. The synthesis of CMC@ZnO NPs has been confirmed by UV–visible, HR-TEM, FTIR, SEM, and XRD analyses. The SEM study revealed that particles were long, cylindrical, and oblong with a rice grain-like morphology. TEM analysis showed that CMC@ZnO NPs have an average particle size of ̴ 10 nm. The synthesized nanoparticles were evaluated to study their influence on the germination and growth of the root and shoot of the <i>Trigonella foenum-graecum</i> (fenugreek) plant seedling. It was found that the minimal concentration of 0.50 mg/L of CMC@ZnO NPs was efficient in exhibiting enhanced growth in contrast to the control. According to the results, CMC@ZnO NPs could enter the plant cell via the roots and were quickly assimilated by the plants, resulting in increased growth.</p><h3 data-test=\"abstract-sub-heading\">Graphical abstract</h3>\u0000","PeriodicalId":513,"journal":{"name":"Chemical Papers","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2024-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141614247","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
Facile and cost-effective optical sensing of abamectin and ivermectin using gold nanoparticles conjugated with organosilicon compound and on cellulose filter paper 在纤维素滤纸上使用与有机硅化合物共轭的金纳米粒子,对阿维菌素和伊维菌素进行简便、经济高效的光学检测
IF 2.2 4区 化学
Chemical Papers Pub Date : 2024-07-09 DOI: 10.1007/s11696-024-03583-3
Yasser M. A. Mohamed, Samar Saead, Yasser A. Attia
{"title":"Facile and cost-effective optical sensing of abamectin and ivermectin using gold nanoparticles conjugated with organosilicon compound and on cellulose filter paper","authors":"Yasser M. A. Mohamed, Samar Saead, Yasser A. Attia","doi":"10.1007/s11696-024-03583-3","DOIUrl":"https://doi.org/10.1007/s11696-024-03583-3","url":null,"abstract":"<p>This study presents a novel, facile, and low-cost method for the separation and sensing of two closely related antiparasitic drugs, abamectin (ABM) and ivermectin (IVM), which have significant applications in agriculture and medicine. The aim was to explore the potential of gold nanoparticles (Au NPs) conjugated with organosilicon compounds as effective optical sensors for these drugs. However, existing methods often involve complex procedures and excessive costs. The aim of this study is to develop a novel, facile, and low-cost method for the separation and sensing of abamectin and ivermectin by exploring the potential of gold nanoparticles (Au NPs) conjugated with organosilicon compounds as effective optical sensors for these drugs. Au NPs were extracellular photosynthesized using yeast extract and conjugated with 1-naphthol-based organosilicon compound (Naph-1-TBDPS) to form Au NP/Naph-1-TBDPS nano-photoactive composite. In addition, the application of the developed nanosensor on cellulose filter paper was achieved. The interaction of abamectin or ivermectin with the nanocomposite (nanosensor) was investigated using UV–Vis spectroscopy. Abamectin caused a red shift in the spectral line of the ABM/Au NPs/Naph-1-TBDPS nanocomposite, while ivermectin caused a blue shift of IVM/Au NPs/Naph-1-TBDPS nanocomposite, indicating distinct interactions. The mechanistic pathway of the observed phenomenon was explained by the formation of a silyl-based abamectin complex in the C22–C23 bond and the etching of Au NPs in the presence of ivermectin forming Au clusters. It was determined that the difference in spectral shifts enabled the selective detection of abamectin and ivermectin. For the first time, this study presents a novel and cost-effective method for the identification and sensing of ABM and IVM using the Au NPs/organosilicon composite. The method demonstrated high sensitivity and selectivity, offering potential for practical applications in drug analysis and quality control, thereby addressing the limitations of previous methods that often-involved complex procedures and high costs.</p>","PeriodicalId":513,"journal":{"name":"Chemical Papers","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2024-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141571727","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
Investigating the effect of cerium oxide nanoparticle on beta-amyloid-induced memory loss 研究氧化铈纳米粒子对β-淀粉样蛋白诱导的记忆丧失的影响
IF 2.2 4区 化学
Chemical Papers Pub Date : 2024-07-08 DOI: 10.1007/s11696-024-03591-3
Zahra Zaghari, Parichehreh Yaghmaei, Maliheh Safavi, Seyed Ali Haeri Rohani
{"title":"Investigating the effect of cerium oxide nanoparticle on beta-amyloid-induced memory loss","authors":"Zahra Zaghari, Parichehreh Yaghmaei, Maliheh Safavi, Seyed Ali Haeri Rohani","doi":"10.1007/s11696-024-03591-3","DOIUrl":"https://doi.org/10.1007/s11696-024-03591-3","url":null,"abstract":"<p>Alzheimer’s disease (AD) is a neurodegenerative disorder characterized by the loss of nerve cells in the hippocampus region of the brain, leading to amnesia. This study investigates the potential antioxidant effects of cerium dioxide nanoparticles (CNPs) on hippocampal CA1 pyramidal neurons and spatial learning in rats with Alzheimer’s disease induced by beta-amyloid. Thirty male rats were randomly divided into five groups (<i>n</i> = 5): AD (undergoing surgery using a stereotaxic device), AD + nano-drug groups (three experimental groups receiving daily doses of nano-drug via gavage at 0.6, 0.4, and 0.1 mg/kg for 28 days after surgery), and control groups (received normal saline intraperitoneally). On day 24 postsurgery, the animals were trained in the Morris water maze with a hidden escape platform to assess spatial learning. The results of the Morris water maze study demonstrated that Alzheimer’s surgery caused spatial learning impairments in rats, while treatment with cerium oxide nanoparticles improved spatial learning performance. Furthermore, the treatment significantly reduced neuronal destruction in the CA1 region compared to the group receiving normal saline (<i>P</i> &lt; 0.01). These findings suggest that cerium oxide nanoparticles alleviate memory impairment in rats. Acting as potent antioxidants, ceria nanoparticles mitigate the detrimental effects of beta-amyloid on memory and hippocampal CA1 neurons, thereby enhancing memory improvement and movement patterns in Alzheimer’s rats.</p>","PeriodicalId":513,"journal":{"name":"Chemical Papers","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2024-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141571319","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
The cyclization and functionalization reactions involving N-phenacylpyridinium salts 涉及 N-苯酰基吡啶鎓盐的环化和官能化反应
IF 2.2 4区 化学
Chemical Papers Pub Date : 2024-07-07 DOI: 10.1007/s11696-024-03593-1
Fatemeh Doraghi, Azam Serajian, Somaye Karimian, Bagher Larijani, Mohammad Mahdavi
{"title":"The cyclization and functionalization reactions involving N-phenacylpyridinium salts","authors":"Fatemeh Doraghi, Azam Serajian, Somaye Karimian, Bagher Larijani, Mohammad Mahdavi","doi":"10.1007/s11696-024-03593-1","DOIUrl":"https://doi.org/10.1007/s11696-024-03593-1","url":null,"abstract":"<p>Pyridinium salts have been used as starting materials and intermediates in 1,3-dipolar cycloaddition with dipolarophiles. Among them, <i>N</i>-phenacylpyridinium salts can easily react with dipolarophiles due to having a good electron-attracting COPh group. This group can stabilize pyridinium ylide generated in situ from <i>N</i>-phenacylpyridinium salts. The synthesis of a wide variety of biologically active <i>N</i>-, <i>O</i>-, and <i>S</i>-heterocycles, as well as carbocycles, can be achieved from <i>N</i>-phenacylpyridinium salt precursors. This review highlights important cyclization and functionalization reactions, involving <i>N</i>-phenacylpyridinium salts.</p><h3 data-test=\"abstract-sub-heading\">Graphical abstract</h3><p><i>N</i>-phenacylpyridinium salts, an important subclass of pyridinium salts, serve as an intermediate, as well as a starting material in the synthesis of a diverse range of <i>N</i>-, <i>O</i>-, and <i>S</i>-heterocycles, as well as carbocycles. The construction of important biologically active molecules, such as indolizine, pyridine, quinoline, pyrrole, azepine, dihydrofuran, and chromene, can be achieved from <i>N</i>-phenacylpyridinium salt precursors. This review highlights cyclization and functionalization reactions, involving <i>N</i>-phenacylpyridinium salts.</p>\u0000","PeriodicalId":513,"journal":{"name":"Chemical Papers","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2024-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141571320","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
Synthesis, antimicrobial evaluation, and molecular docking studies of Mannich base analogs derived from 2,3-dihydro-1,3,4-oxadiazole-2(3H)-thione scaffold 源自 2,3-二氢-1,3,4-恶二唑-2(3H)-硫酮支架的曼尼希碱类似物的合成、抗菌评价和分子对接研究
IF 2.2 4区 化学
Chemical Papers Pub Date : 2024-07-07 DOI: 10.1007/s11696-024-03562-8
Amit C. Mishra, Jagatkumar Upadhyay, Prashant P. Dixit, Kamalkishor Baheti, Shivaji N. Thore
{"title":"Synthesis, antimicrobial evaluation, and molecular docking studies of Mannich base analogs derived from 2,3-dihydro-1,3,4-oxadiazole-2(3H)-thione scaffold","authors":"Amit C. Mishra, Jagatkumar Upadhyay, Prashant P. Dixit, Kamalkishor Baheti, Shivaji N. Thore","doi":"10.1007/s11696-024-03562-8","DOIUrl":"https://doi.org/10.1007/s11696-024-03562-8","url":null,"abstract":"<p>A series of novel trans-3-substituted aminomethyl-5-(4-(4-chlorophenyl)cyclohexyl)-1,3,4-oxadiazole-2(3<i>H</i>)-thiones was synthesized successfully from achiral trans-4-(4-chlorophenyl)cyclohexane-1-carboxylic acid. To investigate their potential binding interactions with proteins at the active site, molecular docking studies were conducted using CDOCKER module (Biovia Discovery Studio 2022) against Penicillin Binding Protein 2 of <i>Escherichia coli</i> (PDB: 6G9F) and <i>Pseudomonas aeruginosa</i> (PDB: 7KIS). The results of the docking studies indicate that the compounds exhibit limited binding efficacy. Molecular Dynamics simulations were carried out for Ceftazidime to predict the ligand binding status in the physiological environment. The antibacterial <i>in-vitro</i> inhibitory potential was evaluated against a panel of microorganisms consisting of two Gram-positive bacterial strains, <i>Bacillus subtilis</i> (ATCC6633) and <i>Staphylococcus aureus</i> (ATCC6538), as well as three Gram-negative bacterial strains, <i>Pseudomonas aeruginosa</i> (ATCC9027), <i>Escherichia coli</i> (ATCC8739), and <i>Salmonella typhi</i> (ATCC9207). The N-Mannich bases displayed promising antibacterial activity against both the Gram-positive microorganisms and demonstrated effective inhibition of <i>Escherichia coli</i>. However, their activity against <i>Pseudomonas aeruginosa</i> was moderate. The binding affinity to Penicillin Binding Proteins was evaluated by observing morphological changes in <i>Escherichia coli</i> rods under an optical microscope. The results revealed a notable decrease in cell count without observable morphological changes, indicating that the N-Mannich bases do not bind strongly to Penicillin Binding Proteins and likely operate through an alternative mechanism. The antifungal activity against <i>Saccharomyces cerevisiae</i> (ATCC9763) and <i>Aspergillus niger</i> (ATCC16404) was not observed.</p><h3 data-test=\"abstract-sub-heading\">Graphical abstract</h3>\u0000","PeriodicalId":513,"journal":{"name":"Chemical Papers","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2024-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141571318","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
Comparative study of physical properties of hydroxyapatite derived from Asian moon scallop and batik shells using sol–gel techniques for producing inorganic membrane plate 利用溶胶-凝胶技术生产无机膜板的亚洲月扇贝和蜡染贝壳羟基磷灰石物理性质比较研究
IF 2.2 4区 化学
Chemical Papers Pub Date : 2024-07-06 DOI: 10.1007/s11696-024-03592-2
Yusuf Wibisono, Syifa Navisa, Dinda Kiswara Arofah, Mochamad Bagus Hermanto, Alfian Noviyanto, Saiful, Tonni Agustiono Kurniawan
{"title":"Comparative study of physical properties of hydroxyapatite derived from Asian moon scallop and batik shells using sol–gel techniques for producing inorganic membrane plate","authors":"Yusuf Wibisono, Syifa Navisa, Dinda Kiswara Arofah, Mochamad Bagus Hermanto, Alfian Noviyanto, Saiful, Tonni Agustiono Kurniawan","doi":"10.1007/s11696-024-03592-2","DOIUrl":"https://doi.org/10.1007/s11696-024-03592-2","url":null,"abstract":"<p>Approximately 33% of organic waste generated in Indonesia is food waste. The waste such as animal bones, seashells, and eggshells with CaCO<sub>3</sub> are unavoidable. To add technological values to the unused waste, Asian moon scallop shell and batik shell that contained high CaCO<sub>3</sub> were used as calcium precursors for synthesizing hydroxyapatite (HAp). Asian moon scallop shell and batik shell powder were obtained by size reduction using a concentric ball mill (CBM) and planetary ball mill (PBM). HAp was synthesized by a sol–gel method followed by calcination at 800 °C to 1000 °C. The characterization data of the HAP with respect to functional groups, microstructure, particle size, and structural analysis were presented. It was found that the presence of CO<sub>3</sub><sup>2−</sup> groups was due to the interaction of the samples with CO<sub>2</sub> in the atmosphere during synthesis. PO<sub>4</sub><sup>3−</sup> and OH<sup>−</sup> groups were present in the HAp. The X-ray diffraction (XRD) analyses show that the product was pure HAp with no other phases present. Its crystallinity index (CI) of 86% indicated a high degree of crystallization. The crystallinity of powder improved with an increasing temperature, while there was non-uniformity in the morphology of HAp due to the increased temperature during calcination. Based on the scanning electron microscope (SEM) analysis, the resulting HAp had a reasonable purity and a nanostructured morphology. According to XRD results, the crystal structure of HAp was hexagonal, confirmed by ICDD card No. 01-084-1998. The lattice structure at peak 31.763° (211) was 2.815 Å. Based on X-ray fluorescence (XRF) analysis, calcium was the most predominant component in both calcined Asian moon scallop shell and batik shell powder (over 98% (w/w)). It is expected that this work contributes to the progress of sol–gel technique for HAp synthesis and the development of eco-friendly materials from unused waste for constructing inorganic membrane plates that can be used for wastewater treatment.</p>","PeriodicalId":513,"journal":{"name":"Chemical Papers","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2024-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141571322","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
Eclipsed conformational locking: exploring iota carrageenan’s distinct behavior in ethanol–water systems via hydrogen bonding with the disulfate group 黯然失色的构象锁定:通过与二硫酸基团的氢键作用探索 iota 角叉菜胶在乙醇-水体系中的独特行为
IF 2.2 4区 化学
Chemical Papers Pub Date : 2024-07-06 DOI: 10.1007/s11696-024-03590-4
Shashank Kailkhura, Priyank Purohit, Akanksha Bhatt, Magda H. Abdellattif
{"title":"Eclipsed conformational locking: exploring iota carrageenan’s distinct behavior in ethanol–water systems via hydrogen bonding with the disulfate group","authors":"Shashank Kailkhura, Priyank Purohit, Akanksha Bhatt, Magda H. Abdellattif","doi":"10.1007/s11696-024-03590-4","DOIUrl":"https://doi.org/10.1007/s11696-024-03590-4","url":null,"abstract":"<p>The present investigation combines diverse experimental methodologies with meticulous examination of the alterations throughout the technique and sheds new light on the interaction between iota carrageenan and ethanol. The interaction of ethanol and iota-carrageenan gives an unstable conformer (eclipsed) with the help of interaction between the disulfate and hydroxy group, which gives the soluble solution phase instead of gel from. The results regarding the interaction between disulfate and ethanol confirm the essential role of disulfate, and the alteration in the physical characteristic of ethanol further substantiates the presence of hydrogen bonding, as evidenced by the widening of the infrared peak of C–O–S (710–720 cm<sup>−1</sup>), S–O (1100 cm<sup>−1</sup>); moreover, the broadening of the peak corresponds to the S=O strongly suggests the interaction with ethanol through hydrogen bonding. The interaction of the carrageenan and ethanol was also confirmed by the evaporation process, which suggests the 20% reduction in the volume of ethanol where iota carrageenan was added; however, in case of kappa, the volume reduction was 60%. In addition to that, the microscopic analysis of the carrageenan and ethanol also supports the possibility of interaction and role of disulfate in the interaction. The solution phase of carrageenan can be utilized further for the chemical reaction for the functionalization and grafting, while in most of the solvent it remains in insoluble form or in gel form, which does not provide a homogenous system to molecule colloids for the reaction.</p>","PeriodicalId":513,"journal":{"name":"Chemical Papers","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2024-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141571321","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
Carbonaceous materials–20: electrochemical determination of viloxazine on a novel carbonaceous template 碳质材料-20:在新型碳质模板上电化学测定维洛沙嗪
IF 2.2 4区 化学
Chemical Papers Pub Date : 2024-07-03 DOI: 10.1007/s11696-024-03586-0
Ecem Ürer-Yayla, İhsan Aşık, Gülcan Üner, Mustafa Oguzhan Caglayan, Zafer Üstündağ
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