Molecules最新文献_第7页

The Application of Multifunctional Metal-Organic Frameworks for the Detection, Adsorption, and Degradation of Contaminants in an Aquatic Environment.

IF 4.2 2区化学

Molecules Pub Date : 2025-03-17 DOI: 10.3390/molecules30061336

Yachen Liu, Jinbin Yang, Junlin Wu, Zehao Jiang, Xinyu Zhang, Fanjun Meng

{"title":"The Application of Multifunctional Metal-Organic Frameworks for the Detection, Adsorption, and Degradation of Contaminants in an Aquatic Environment.","authors":"Yachen Liu, Jinbin Yang, Junlin Wu, Zehao Jiang, Xinyu Zhang, Fanjun Meng","doi":"10.3390/molecules30061336","DOIUrl":"10.3390/molecules30061336","url":null,"abstract":"Water pollution poses a severe threat to both aquatic ecosystems and human health, highlighting the crucial importance of monitoring and regulating its levels in water bodies. In contrast to traditional single-treatment approaches, multiple-treatment methods enable the simultaneous detection and removal of water pollutants using a single material. This innovation not only offers convenience but also fosters a more holistic and effective approach to water remediation. Metal-organic frameworks (MOFs) are versatile porous materials that offer significant potential for use in wastewater treatment. This article examines the latest developments in the application of MOFs for multifaceted wastewater treatment. MOFs are used for simultaneous detection and removal, or for the detection and degradation of contaminants. Some MOFs exhibited different functions for different contaminants, and some MOFs showed one function (adsorption or detection) for more than one contaminant. All the multifunctional MOFs facilitate the multiple treatment of the real wastewater. Lastly, existing challenges and future outlooks concerning MOF materials for wastewater treatment are also addressed in this paper.","PeriodicalId":19041,"journal":{"name":"Molecules","volume":"30 6","pages":""},"PeriodicalIF":4.2,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11945069/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143720423","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Separation and Recovery of Trace Silver from Sintering Filtrated Dust of Ferrous Metallurgy via Complexation Leaching.

IF 4.2 2区化学

Molecules Pub Date : 2025-03-17 DOI: 10.3390/molecules30061339

Zhiqiang Qiao, Yunquan Yang, Tian Zhang, Weishun Chen

{"title":"Separation and Recovery of Trace Silver from Sintering Filtrated Dust of Ferrous Metallurgy via Complexation Leaching.","authors":"Zhiqiang Qiao, Yunquan Yang, Tian Zhang, Weishun Chen","doi":"10.3390/molecules30061339","DOIUrl":"10.3390/molecules30061339","url":null,"abstract":"In this work, by using the sintering filtrated dust (SFD) from ferrous metallurgy as a raw material, the process of separating and recovering trace silver, including the steps of complexation leaching by Na2S2O3-CuCl, purification by hydrogen peroxide, and precipitation transformation, was researched and developed. The process is characterized by a high leaching selectivity and a high recovery. The recommended conditions for leaching trace silver from SFD were as follows: a leaching time of 120 min, a leaching temperature of 60 °C, a solid-liquid ratio of 6 L/kg, a Na2S2O3 concentration of 45 g/L, and a CuCl dosage of 5.0 g/L. Through a two-step hydrogen peroxide process, removal of the impurity ions Cu and Pb and high-efficiency recovery of trace silver were realized. The purity of the silver sulfide product obtained from the recovery was 97.0%, and the total silver recovery was 80.1%. In addition, the reaction mechanism of the recovery process was investigated in this work, and effective removal of impurity ions was realized by regulating the reaction time.","PeriodicalId":19041,"journal":{"name":"Molecules","volume":"30 6","pages":""},"PeriodicalIF":4.2,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11944294/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143720797","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Supplementing Freezing Medium with Crocin Exerts a Protective Effect on Bovine Spermatozoa Through the Modulation of a Heat Shock-Mediated Apoptotic Pathway.

IF 4.2 2区化学

Molecules Pub Date : 2025-03-16 DOI: 10.3390/molecules30061329

Vasiliki Sapanidou, Maria P Tsantarliotou, Konstantinos Feidantsis, Eleni E Tzekaki, Georgios Kourousekos, Sophia N Lavrentiadou

{"title":"Supplementing Freezing Medium with Crocin Exerts a Protective Effect on Bovine Spermatozoa Through the Modulation of a Heat Shock-Mediated Apoptotic Pathway.","authors":"Vasiliki Sapanidou, Maria P Tsantarliotou, Konstantinos Feidantsis, Eleni E Tzekaki, Georgios Kourousekos, Sophia N Lavrentiadou","doi":"10.3390/molecules30061329","DOIUrl":"10.3390/molecules30061329","url":null,"abstract":"The supplementation of freezing medium with crocin results in an amelioration of post-thawing sperm quality, as determined by motility and viability. This study aimed to examine the molecular mechanisms underlying the ameliorative effect of crocin. Bovine spermatozoa were cryopreserved in a freezing medium supplemented with 0, 0.5, or 1 mM of crocin. Sperm lysates were evaluated for their redox status and the expression of proteins implicated in the heat stress response (HSR) and apoptosis. Crocin protected spermatozoa from the accumulation of superoxide anion and ameliorated their post-thawing antioxidant capacity in terms of ROS scavenging activity and glutathione content. Moreover, crocin decreased the levels of inducible nitric oxide synthase (iNOS), while it increased superoxide dimsutase-1 (SOD-1) levels. These effects were associated with an inhibition of apoptosis, as evidenced by a decreased Bax/Bcl-2 protein ratio and decreased levels of caspase-cleaved substrates. Finally, crocin affected the heat shock response of spermatozoa, since it upregulated the levels of heat shock proteins (Hsp) 60, 70, and 90. In conclusion, the addition of crocin to the freezing medium ensured controlled amounts of ROS, enhanced the antioxidant capacity of spermatozoa, and upregulated the anti-apoptotic proteins and Hsps, thus contributing to the maintenance of cellular homeostasis.","PeriodicalId":19041,"journal":{"name":"Molecules","volume":"30 6","pages":""},"PeriodicalIF":4.2,"publicationDate":"2025-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11944583/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143720878","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Meta-Xylene-Based Diamines with Protected Benzyl Sites: Potential NCN Pincer Ligands with Tunable Steric Profiles.

IF 4.2 2区化学

Molecules Pub Date : 2025-03-16 DOI: 10.3390/molecules30061331

Tamina Z Kirsch, Toren Hynes, Jason D Masuda, Saurabh S Chitnis

{"title":"Meta-Xylene-Based Diamines with Protected Benzyl Sites: Potential NCN Pincer Ligands with Tunable Steric Profiles.","authors":"Tamina Z Kirsch, Toren Hynes, Jason D Masuda, Saurabh S Chitnis","doi":"10.3390/molecules30061331","DOIUrl":"10.3390/molecules30061331","url":null,"abstract":"Bulky NCN aryl-diamides featuring methyl groups in the benzyl positions were synthesized with the aim of creating a new class of meta-xylene-based trianionic pincer ligands where the common decomposition pathway of metal pincer complexes via C-H activation is prevented. Sterically demanding substituents on the ligands furthermore provide steric protection of the metal centre and can help prevent the dimerization of the complexes. While a double deprotonation of the ligands and the formation of a dilithium salt was straightforward, difficulties were encountered when attempting to deprotonate the ipso-CH proton on the central aryl ring to yield trianionic ligands. This stands in contrast to related pincer ligands without methyl groups in the benzylic positions. Experimental and theoretical investigations led to the conclusion that the challenges encountered when attempting the third deprotonation are likely caused by an interplay of increased electron density at the nitrogen atoms and steric hindrance. Both effects originate in the introduction of methyl groups in the benzylic positions, which make the targeted proton less accessible. These results provide further insight into the impact of methyl groups in the benzyl positions on both steric and electronic properties of NCN pincer ligands, which may find utility in coordination chemistry applications where metalation can be achieved by direct C-H activation rather than requiring triple deprotonation.","PeriodicalId":19041,"journal":{"name":"Molecules","volume":"30 6","pages":""},"PeriodicalIF":4.2,"publicationDate":"2025-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11945109/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143720667","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Study of Electrochemical Transformation of Anacardic Acid from Cashew (Anacardium occidentale) Nut Shell Liquid.

IF 4.2 2区化学

Molecules Pub Date : 2025-03-16 DOI: 10.3390/molecules30061330

Alvaro A Arrieta, Jorge A Ducuara, Yamid Nuñez de la Rosa

{"title":"Study of Electrochemical Transformation of Anacardic Acid from Cashew (Anacardium occidentale) Nut Shell Liquid.","authors":"Alvaro A Arrieta, Jorge A Ducuara, Yamid Nuñez de la Rosa","doi":"10.3390/molecules30061330","DOIUrl":"10.3390/molecules30061330","url":null,"abstract":"The valorization of agricultural waste has gained attention due to the need for sustainable technologies addressing environmental and economic challenges. The aim of this work is to investigate the electrochemical transformation of anacardic acid, a major component of cashew nut shell liquid (CNSL), into organic acids and polymeric materials. Cyclic voltammetry (CV) was carried out on ethanolic anacardic acid solutions with NaOH as the supporting electrolyte to induce oxidation reactions. CV, FTIR spectroscopy, and electrochemical impedance spectroscopy (EIS) were used to analyze the transformation processes. The results revealed oxidation sequences involving phenoxyl radicals, hydroquinones, and benzoquinones, leading to ring-opening reactions and the production of low-molecular-weight organic acids, including propionic, formic, oxalic, lactic, and acetic acids, as confirmed by HPLC. Polymerization processes were also observed, leading to the attainment of polymeric materials. FTIR spectra showed changes in phenol and carboxylic acid bands, confirming chemical transformations. CV and EIS indicated irreversible oxidation processes with charge transfer coefficients between 0.397 and 0.414 controlled by diffusion-adsorption. This work demonstrates the feasibility of electrochemical oxidation as a green method for producing organic acids from anacardic acid, aligning with circular economy principles and reducing reliance on petrochemical sources. It highlights the potential of electrochemical approaches for sustainable biomass utilization and fine chemical synthesis.","PeriodicalId":19041,"journal":{"name":"Molecules","volume":"30 6","pages":""},"PeriodicalIF":4.2,"publicationDate":"2025-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11944402/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143720875","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Preparation and Improved Properties of Vanillin-Crosslinked Polyvinyl Alcohol/Chitosan Active Packaging Films.

IF 4.2 2区化学

Molecules Pub Date : 2025-03-16 DOI: 10.3390/molecules30061334

Yina He, Xiaojun Zhang, Zhan Zhang, Bing Lin, Haitao Yu

引用次数: 0

Enzymatic Esterification of Functional Lipids for Specialty Fats: 1,3-Dipalmitoylglycerol and 1,3-Distearoylglycerol.

IF 4.2 2区化学

Molecules Pub Date : 2025-03-16 DOI: 10.3390/molecules30061328

Yuhuang Yang, Juanjuan Chi, Shengyuan Wang, Abdelaziz Elbarbary, Yafei Zhang, Jun Jin

{"title":"Enzymatic Esterification of Functional Lipids for Specialty Fats: 1,3-Dipalmitoylglycerol and 1,3-Distearoylglycerol.","authors":"Yuhuang Yang, Juanjuan Chi, Shengyuan Wang, Abdelaziz Elbarbary, Yafei Zhang, Jun Jin","doi":"10.3390/molecules30061328","DOIUrl":"10.3390/molecules30061328","url":null,"abstract":"High-melting point 1,3-diacylglycerols not only provide health benefits, but are also suitable for manufacture of foods containing various specialty fats. It is difficult to prepare such high-melting point diacylglycerols, as the activities of specific enzymes will severely reduce at their melting points. In the present study, a combined technique was developed to prepare 1,3-dipalmitoylglycerol (1,3-DPG) and 1,3-distearoylglycerol (1,3-DSG) using selective esterification, molecular distillation, and solvent fractionation. Lipozyme TL IM was suitable for use as the optimal enzyme to maintain relatively high activity levels at esterification temperatures of 73-75 °C. 1,3-DAG/(DAG + TAG) was selected as the most important index to monitor the esterification and to evaluate the synthesized fats. The obtained 1,3-DPG and 1,3-DSG showed high purities, at more than 83%, and possessed hard attributes at room temperature. Both 1,3-DPG and 1,3-DSG exhibited fat crystals with β' and β crystals. Needle-like and rod-like crystals were observed at 5-25 °C for 1,3-DPG, and closely packed feather-like crystals were found at 5-20 °C for 1,3-DSG, indicating their multiple abilities in modifying the crystallization stabilization of the fat matrix during food processing.","PeriodicalId":19041,"journal":{"name":"Molecules","volume":"30 6","pages":""},"PeriodicalIF":4.2,"publicationDate":"2025-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11946563/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143720723","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Properties of Sunflower Straw Biochar Activated Using Potassium Hydroxide.

IF 4.2 2区化学

Molecules Pub Date : 2025-03-16 DOI: 10.3390/molecules30061332

Siyu Chang, Lei Wang, Lihong Yao

{"title":"Properties of Sunflower Straw Biochar Activated Using Potassium Hydroxide.","authors":"Siyu Chang, Lei Wang, Lihong Yao","doi":"10.3390/molecules30061332","DOIUrl":"10.3390/molecules30061332","url":null,"abstract":"Biochar is a kind of carbon material with a wide range of sources; it has attracted considerable attention because of its abundant resources and low cost. Potassium hydroxide (KOH) is a strong alkali activator that can effectively change the surface chemical properties and microstructure of biochar. Biochar activated by KOH has a large specific surface area (SSA) and a rich pore structure. Herein, sunflower straw was used as a raw material and KOH as an activator to investigate the preparation of sunflower straw biochar activated by KOH. The effects of synthetic conditions on the performance and structure of the resulting biochar materials were comprehensively analyzed. The final activation conditions were as follows: the impregnation ratio, activation time, and activation temperature were 2:1, 2 h, and 900 °C, respectively. The composition and structure of the prepared biochar were characterized. It was observed by SEM that the surface of the activated biochar became rougher. FTIR, XRD, XPS, and Raman characterization showed that the aromaticity and graphitization degree of the activated biochar increased. The activation process of biochar was analyzed via multiple techniques, aiming to lay the foundation for the wide application of biochar materials.","PeriodicalId":19041,"journal":{"name":"Molecules","volume":"30 6","pages":""},"PeriodicalIF":4.2,"publicationDate":"2025-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11945251/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143720591","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Flaxseed in Diet: A Comprehensive Look at Pros and Cons.

IF 4.2 2区化学

Molecules Pub Date : 2025-03-16 DOI: 10.3390/molecules30061335

Sara Duarte, Muhammad Ajmal Shah, Ana Sanches Silva

{"title":"Flaxseed in Diet: A Comprehensive Look at Pros and Cons.","authors":"Sara Duarte, Muhammad Ajmal Shah, Ana Sanches Silva","doi":"10.3390/molecules30061335","DOIUrl":"10.3390/molecules30061335","url":null,"abstract":"Flaxseeds, which have been consumed for thousands of years, have recently gained increasing popularity due to their rich composition, including omega-3 fatty acids, lignans, proteins, and fibers. These components are strongly associated with various health benefits, such as improving cardiovascular health, preventing certain types of cancer, controlling diabetes, promoting gastro-intestinal well-being, and aiding in weight management. This monograph explores the role of flaxseeds in nutrition, as well as their potential risks. Despite their numerous health benefits, flaxseeds also represent concerns due to excessive consumption and possible contamination, particularly from cyanogenic glycosides. Therefore, the levels of these compounds must be controlled, and this monograph also analyzes the available methods to detect and reduce these contaminants, ensuring the safety of flaxseed and flaxseed products consumers. Flaxseed is considered a valuable addition when incorporated into the diet, but it is necessary to continue research and promote technological improvements to maximize their benefits and minimize their risks.","PeriodicalId":19041,"journal":{"name":"Molecules","volume":"30 6","pages":""},"PeriodicalIF":4.2,"publicationDate":"2025-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11945857/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143720692","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Phosphorylated Nitrones-Synthesis and Applications.

IF 4.2 2区化学

Molecules Pub Date : 2025-03-16 DOI: 10.3390/molecules30061333

Iwona Rozpara, José Marco-Contelles, Dorota G Piotrowska, Iwona E Głowacka

引用次数: 0