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Perspectives in Aptasensor-Based Portable Detection for Biotoxins. 基于光电传感器的便携式生物毒素检测展望。
IF 4.2 2区 化学
Molecules Pub Date : 2024-10-15 DOI: 10.3390/molecules29204891
Congying Li, Ziyuan Zhu, Jiahong Yao, Zhe Chen, Yishun Huang
{"title":"Perspectives in Aptasensor-Based Portable Detection for Biotoxins.","authors":"Congying Li, Ziyuan Zhu, Jiahong Yao, Zhe Chen, Yishun Huang","doi":"10.3390/molecules29204891","DOIUrl":"https://doi.org/10.3390/molecules29204891","url":null,"abstract":"<p><p>Biotoxins are pervasive in food and the environment, posing significant risk to human health. The most effective strategy to mitigate the risk arising from biotoxin exposure is through their specific and sensitive detection. Aptasensors have emerged as pivotal tools, leveraging aptamers as biorecognition elements to transduce the specificity of aptamer-target interactions into quantifiable signals for analytical applications, thereby facilitating the meticulous detection of biotoxins. When integrated with readily portable devices such as lateral flow assays (LFAs), personal glucose meters (PGMs), smartphones, and various meters measuring parameters like pH and pressure, aptasensors have significantly advanced the field of biotoxin monitoring. These commercially available devices enable precise, in situ, and real-time analysis, offering great potential for portable biotoxin detection in food and environmental matrices. This review highlights the recent progress in biotoxin monitoring using portable aptasensors, discussing both their potential applications and the challenges encountered. By addressing these impediments, we anticipate that a portable aptasensor-based detection system will open new avenues in biotoxin monitoring in the future.</p>","PeriodicalId":19041,"journal":{"name":"Molecules","volume":null,"pages":null},"PeriodicalIF":4.2,"publicationDate":"2024-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11510259/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142504710","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
Syn-Propanethial S-Oxide as an Available Natural Building Block for the Preparation of Nitro-Functionalized, Sulfur-Containing Five-Membered Heterocycles: An MEDT Study. 作为制备硝基官能化、含硫五元杂环的可用天然构件的合成丙硫醚 S-氧化物:MEDT 研究。
IF 4.2 2区 化学
Molecules Pub Date : 2024-10-15 DOI: 10.3390/molecules29204892
Mikołaj Sadowski, Ewa Dresler, Karolina Zawadzińska, Aneta Wróblewska, Radomir Jasiński
{"title":"<i>Syn</i>-Propanethial S-Oxide as an Available Natural Building Block for the Preparation of Nitro-Functionalized, Sulfur-Containing Five-Membered Heterocycles: An MEDT Study.","authors":"Mikołaj Sadowski, Ewa Dresler, Karolina Zawadzińska, Aneta Wróblewska, Radomir Jasiński","doi":"10.3390/molecules29204892","DOIUrl":"https://doi.org/10.3390/molecules29204892","url":null,"abstract":"<p><p>The regio- and stereoselectivity and the molecular mechanisms of the [3 + 2] cycloaddition reactions between <i>Syn</i>-propanethial S-oxide and selected conjugated nitroalkenes were explored theoretically in the framework of the Molecular Electron Density Theory. It was found that cycloadditions with the participation of nitroethene as well as its methyl- and chloro-substituted analogs can be realized via a single-step mechanism. On the other hand, [3 + 2] cycloaddition reactions between <i>Syn</i>-propanethial S-oxide and 1,1-dinitroethene can proceed according to a stepwise mechanism with a zwitterionic intermediate. Finally, we evaluated the affinity of model reaction products for several target proteins: cytochrome P450 14α-sterol demethylase CYP51 (RSCB Database PDB ID: 1EA1), metalloproteinase gelatinase B (MMP-9; PDB ID: 4XCT), and the inhibitors of cyclooxygenase COX-1 (PDB:3KK6) and COX-2 (PDB:5KIR).</p>","PeriodicalId":19041,"journal":{"name":"Molecules","volume":null,"pages":null},"PeriodicalIF":4.2,"publicationDate":"2024-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11510298/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142504573","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
Comprehensive Analysis of Sulfated Flavonoids in Eclipta prostrata for Quality Evaluation. 用于质量评价的 Eclipta prostrata 中硫酸化黄酮类化合物的综合分析。
IF 4.2 2区 化学
Molecules Pub Date : 2024-10-15 DOI: 10.3390/molecules29204888
Ryunosuke Sato, Yuto Nishidono, Ken Tanaka
{"title":"Comprehensive Analysis of Sulfated Flavonoids in <i>Eclipta prostrata</i> for Quality Evaluation.","authors":"Ryunosuke Sato, Yuto Nishidono, Ken Tanaka","doi":"10.3390/molecules29204888","DOIUrl":"https://doi.org/10.3390/molecules29204888","url":null,"abstract":"<p><p><i>Eclipta prostrata</i> (Asteraceae) is employed as a hemostatic agent in many traditional medicines, owing to its sulfated flavonoid content. In this study, we obtained crude drug samples from three provinces collected in different years and analyzed their sulfated flavonoid contents using liquid chromatography-mass spectrometry (LC-MS) for quality evaluation. Because sulfated flavonoids are unstable and difficult to isolate from extracts, this study first synthesized a variety of sulfated flavonoids and accumulated spectral data in order to identify the compounds in <i>E. prostrata</i>. The LC-MS analysis of six crude drug samples revealed the presence of luteolin 7-sulfate, apigenin 7-sulfate, diosmetin 7-sulfate, and diosmetin 3'-sulfate. The samples without luteolin 3'-sulfate featured high apigenin 7-sulfate content. Although the samples were collected from the same locality, their compositions differed depending on the year of collection. Further, they were classified according to three patterns: (1) samples with luteolin 7-sulfate as the main component, (2) samples with apigenin 7-sulfate as the main component, and (3) samples with relatively high diosmetin sulfate content. Luteolin 7-sulfate typically exhibits relatively high erythrocyte aggregation efficiency and fibrinogen aggregation rate. These results demonstrate that the analysis of sulfated flavonoids is beneficial for the quality evaluation of <i>E. prostrata</i> for hemostatic applications.</p>","PeriodicalId":19041,"journal":{"name":"Molecules","volume":null,"pages":null},"PeriodicalIF":4.2,"publicationDate":"2024-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11509997/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142504608","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
Simultaneous Qualitative and Quantitative Analyses of 41 Constituents in Uvaria macrophylla Leaves Screen Antioxidant Quality-Markers Using Database-Affinity Ultra-High-Performance Liquid Chromatography with Quadrupole Orbitrap Tandem Mass Spectrometry. 利用数据库-亲和型超高效液相色谱-四极杆轨道阱串联质谱法同时定性和定量分析大叶女贞叶中的 41 种成分,筛选抗氧化剂质量标记。
IF 4.2 2区 化学
Molecules Pub Date : 2024-10-15 DOI: 10.3390/molecules29204886
Xiaoqiong Xu, Xican Li, Shaoman Chen, Yongbai Liang, Chuanyang Zhang, Yuhan Huang
{"title":"Simultaneous Qualitative and Quantitative Analyses of 41 Constituents in <i>Uvaria macrophylla</i> Leaves Screen Antioxidant Quality-Markers Using Database-Affinity Ultra-High-Performance Liquid Chromatography with Quadrupole Orbitrap Tandem Mass Spectrometry.","authors":"Xiaoqiong Xu, Xican Li, Shaoman Chen, Yongbai Liang, Chuanyang Zhang, Yuhan Huang","doi":"10.3390/molecules29204886","DOIUrl":"https://doi.org/10.3390/molecules29204886","url":null,"abstract":"<p><p>To date, no study has focused on <i>Uvaria macrophylla</i> leaves with various traditional efficiencies. This paper therefore applied a database affinity ultra-high-performance liquid chromatography with quadrupole Orbitrap tandem mass spectrometry (UHPLC-Q-Orbitrap-MS/MS) strategy to analyze the lyophilized aqueous extract of <i>U. macrophylla</i> leaves. Through database comparison and MS fragment elucidation, this study has putatively identified 41 constituents belonging to flavonoid, phenolic acid, steroid, and saccharide natural product classifications. Significantly, four groups of isomers (liquiritigenin vs. isoliquiritigenin vs. pinocembrin; oroxylin A vs. wogonin vs. galangin 3-methyl ether; isoquercitrin vs. hyperoside; protocatechuic acid vs. 2,5-dihydroxybenzoic acid) have been successfully distinguished from each other. All of 41 constituents were then subjected to a quantitative analysis based on linear regression equation established by the above UHPLC-Q-Orbitrap-MS/MS strategy and an ABTS<sup>+•</sup>-scavenging antioxidant assay. Finally, the chemical content was multiplied by the corresponding ABTS<sup>+•</sup>-scavenging percentage to calculate the antioxidant contribution. It was shown that the chemical contents of 41 constituents varied from 0.003 ± 0.000 to 14.418 ± 1.041 mg/g, and gallic acid showed the highest antioxidant contribution. Gallic acid is considered as a suitable antioxidant quality-marker (Q-marker) of <i>U. macrophylla</i> leaves. These findings have scientific implications for the resource development and quality control of <i>U. macrophylla</i> leaves.</p>","PeriodicalId":19041,"journal":{"name":"Molecules","volume":null,"pages":null},"PeriodicalIF":4.2,"publicationDate":"2024-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11510267/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142504733","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
Virtual Instruments for Peak-Overlapping Studies to Determine Low- and High-Concentration Components with Ion Chromatography: Potassium and Sodium. 利用离子色谱法测定低浓度和高浓度成分的峰重叠研究虚拟仪器:钾和钠
IF 4.2 2区 化学
Molecules Pub Date : 2024-10-15 DOI: 10.3390/molecules29204882
Nataša Gros
{"title":"Virtual Instruments for Peak-Overlapping Studies to Determine Low- and High-Concentration Components with Ion Chromatography: Potassium and Sodium.","authors":"Nataša Gros","doi":"10.3390/molecules29204882","DOIUrl":"https://doi.org/10.3390/molecules29204882","url":null,"abstract":"<p><p>We developed the LabVIEW-based virtual instruments (VIs) to bridge a gap in commercial software and to enable systematic peak-overlapping studies to recognise the concentration levels enabling reliable simultaneous determination of major and minor constituents in samples with wide concentration proportions. The VIs were applied to a case study of the ion chromatographic determination of potassium as minor and sodium as a major ion with an IonPac CS12A column and 50 μL injection loop. Two successive studies based on multilevel two-factorial response surface experimental designs, (1) a model peak-overlapping study based on single-ion injections, and (2) an accuracy and precision study, provided guidelines for real sample analyses. By adjusting sample dilutions so that the sodium mass concentration was set to 340 mg/L, the simultaneous determination of potassium in the presence of sodium was possible in samples with sodium over potassium concentration ratios between 14 and 341. The relative expanded uncertainty associated with potassium ion determination was between 0.52 and 4.4%, and the relative bias was between -3.8 and 1.9%. We analysed Ringer's physiologic solutions, standard sea, trisodium citrate anticoagulant, and buffered citrate anticoagulant solutions. We confirmed that the VI-supported peak-overlapping studies contributed to the quality of results by enabling the evidence-based choices of concentration levels adjusted by a dilution.</p>","PeriodicalId":19041,"journal":{"name":"Molecules","volume":null,"pages":null},"PeriodicalIF":4.2,"publicationDate":"2024-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11510477/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142504764","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
Overview of Venous Thromboembolism and Emerging Therapeutic Technologies Based on Nanocarriers-Mediated Drug Delivery Systems. 静脉血栓栓塞症和基于纳米载体给药系统的新兴治疗技术概述。
IF 4.2 2区 化学
Molecules Pub Date : 2024-10-15 DOI: 10.3390/molecules29204883
Masoud Salavati, Arman Arabshomali, Sasan Nouranian, Zia Shariat-Madar
{"title":"Overview of Venous Thromboembolism and Emerging Therapeutic Technologies Based on Nanocarriers-Mediated Drug Delivery Systems.","authors":"Masoud Salavati, Arman Arabshomali, Sasan Nouranian, Zia Shariat-Madar","doi":"10.3390/molecules29204883","DOIUrl":"https://doi.org/10.3390/molecules29204883","url":null,"abstract":"<p><p>Venous thromboembolism (VTE) is a serious health condition and represents an important cause of morbidity and, in some cases, mortality due to the lack of effective treatment options. According to the Centers for Disease Control and Prevention, 3 out of 10 people with VTE will have recurrence of a clotting event within ten years, presenting a significant unmet medical need. For some VTE patients, symptoms can last longer and have a higher than average risk of serious complications; in contrast, others may experience complications arising from insufficient therapies. People with VTE are initially treated with anticoagulants to prevent conditions such as stroke and to reduce the recurrence of VTE. However, thrombolytic therapy is used for people with pulmonary embolism (PE) experiencing low blood pressure or in severe cases of DVT. New drugs are under development, with the aim to ensure they are safe and effective, and may provide an additional option for the treatment of VTE. In this review, we summarize all ongoing trials evaluating anticoagulant interventions in VTE listed in clinicaltrials.gov, clarifying their underlying mechanisms and evaluating whether they prevent the progression of DVT to PE and recurrence of thrombosis. Moreover, this review summarizes the available evidence that supports the use of antiplatelet therapy for VTE. Since thrombolytic agents would cause off-target effects, targeted drug delivery platforms are used to develop various therapeutics for thrombotic diseases. We discuss the recent advances achieved with thrombus-targeting nanocarriers as well as the major challenges associated with the use of nanoparticle-based therapeutics.</p>","PeriodicalId":19041,"journal":{"name":"Molecules","volume":null,"pages":null},"PeriodicalIF":4.2,"publicationDate":"2024-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11510185/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142504708","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
2-Pyridylmetallocenes, Part IX. Sulphur-Substituted 2-Pyridylferrocene: Synthesis and Reactivity towards Pt(II) and Hg(II). 2-Pyridylmetallocenes, Part IX.硫代 2-吡啶基二茂铁:合成及对 Pt(II) 和 Hg(II) 的反应活性。
IF 4.2 2区 化学
Molecules Pub Date : 2024-10-15 DOI: 10.3390/molecules29204884
Stefan Weigand, Karlheinz Sünkel
{"title":"2-Pyridylmetallocenes, Part IX. Sulphur-Substituted 2-Pyridylferrocene: Synthesis and Reactivity towards Pt(II) and Hg(II).","authors":"Stefan Weigand, Karlheinz Sünkel","doi":"10.3390/molecules29204884","DOIUrl":"https://doi.org/10.3390/molecules29204884","url":null,"abstract":"<p><p>Thio-substituted 2-pyridylferrocenes [CpFe{C<sub>5</sub>H<sub>3</sub>(X)(C<sub>5</sub>H<sub>4</sub>N)}] (X = SOTol, <b>3</b>; SMe, <b>5</b>) were prepared from [CpFe(C<sub>5</sub>H<sub>4</sub>R)] (R = SOTol, <b>1</b>; 2-C<sub>5</sub>H<sub>4</sub>N, <b>2</b>) in moderate yields. The reactions of <b>3</b> and <b>5</b> with [PtCl<sub>2</sub>(DMSO)<sub>2</sub>] yielded the binuclear N, S chelated complexes [CpFe{C<sub>5</sub>H<sub>3</sub>(X)(C<sub>5</sub>H<sub>4</sub>N)}-(к-N,S)-PtCl<sub>2</sub>] (X= SOTol, <b>4</b>, SMe, <b>6</b>), while the reaction of <b>5</b> with Hg(OAc)<sub>2</sub>/LiCl led to cyclomercuration with generation of [CpFe{C<sub>5</sub>H<sub>2</sub>(SMe)(C<sub>5</sub>H<sub>4</sub>N)(HgCl)}], <b>7</b>. The crystal structures of <b>6</b>·CH<sub>2</sub>Cl<sub>2</sub> and <b>7</b> were determined. The structure of <b>6</b> showed a weak intramolecular Fe…Pt interaction and several weak intermolecular interactions involving all Cl atoms. Weak intermolecular interactions between Hg and S atoms in the cyclomercurated <b>7</b> led to a tetrameric structure involving a Hg<sub>2</sub>S<sub>2</sub> ring.</p>","PeriodicalId":19041,"journal":{"name":"Molecules","volume":null,"pages":null},"PeriodicalIF":4.2,"publicationDate":"2024-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11510587/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142504574","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
Characterization of Differences in Chemical Profiles and Antioxidant Activities of Schisandra chinensis and Schisandra sphenanthera Based on Multi-Technique Data Fusion. 基于多技术数据融合的五味子和五味子化学特征和抗氧化活性差异表征
IF 4.2 2区 化学
Molecules Pub Date : 2024-10-14 DOI: 10.3390/molecules29204865
Lujie Lin, Zhuqian Tang, Huijuan Xie, Lixin Yang, Bin Yang, Hua Li
{"title":"Characterization of Differences in Chemical Profiles and Antioxidant Activities of <i>Schisandra chinensis</i> and <i>Schisandra sphenanthera</i> Based on Multi-Technique Data Fusion.","authors":"Lujie Lin, Zhuqian Tang, Huijuan Xie, Lixin Yang, Bin Yang, Hua Li","doi":"10.3390/molecules29204865","DOIUrl":"https://doi.org/10.3390/molecules29204865","url":null,"abstract":"<p><p><i>Schisandra chinensis</i> (Turcz.) Baill. (<i>S. chinensis</i>) and <i>Schisandra sphenanthera</i> Rehd. et Wils (<i>S. sphenanthera</i>) are called \"Wuweizi\" in traditional Chinese medicine, and they have distinct clinical applications. To systematically compare the differential characteristics of <i>S. chinensis</i> and <i>S. sphenanthera</i>, this study employed ultra-performance liquid chromatography-quadrupole time-of-flight mass spectrometry (UPLC-QTOF-MS) and gas chromatography-mass spectrometry (GC-MS) to construct chemical profiles of these two species from different regions. In total, 31 non-volatiles and 37 volatiles were identified in <i>S. chinensis</i>, whereas 40 non-volatiles and 34 volatiles were detected in <i>S. sphenanthera</i>. A multivariate statistical analysis showed that the non-volatiles tigloygomisin P, schisandrol A, schisantherin C, and 6-O-benzoylgomisin O and the volatiles ylangene, γ-muurolene, and β-pinene distinguish these species. Additionally, the metabolism of oxygen free radicals can contribute to the development of various diseases, including cardiovascular and neurodegenerative diseases. Therefore, antioxidant activities were evaluated using 1,1-diphenyl-2-picrylhydrazyl (DPPH) and 2,2'-azino-bis-3-ethylbenzthiazoline-6-sulphonic acid (ABTS) scavenging assays. The results showed that <i>S. sphenanthera</i> exhibited significantly higher antioxidant potential. A gray relational analysis indicated that the key contributors to the antioxidant activity of <i>S. chinensis</i> were schisandrol A, gomisin G, schisantherin C, pregomisin, gomisin J, and schisantherin B. For <i>S. sphenanthera</i>, the key contributors included gomisin K2, schisantherin B, gomisin J, pregomisin, schisantherin C, schisandrin, gomisin G, schisantherin A, schisanhenol, and α-pinene. The identification of the differential chemical markers and the evaluation of the antioxidant activities provide a foundation for further research into the therapeutic applications of these species. This innovative study provides a robust framework for the quality control and therapeutic application of <i>S. chinensis</i> and <i>S. sphenanthera</i>, offering new insights into their medicinal potential.</p>","PeriodicalId":19041,"journal":{"name":"Molecules","volume":null,"pages":null},"PeriodicalIF":4.2,"publicationDate":"2024-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11510710/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142504602","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
Optimization of Polysaccharide Extraction from Polygonatum cyrtonema Hua by Freeze-Thaw Method Using Response Surface Methodology. 响应面法优化冻融法提取何首乌多糖的过程
IF 4.2 2区 化学
Molecules Pub Date : 2024-10-14 DOI: 10.3390/molecules29204879
Ziming Wang, Shushen Wu, Jiayi Wang, Ci Yang, Yang Wang, Zhan Hu, Wei Cai, Lianghong Liu
{"title":"Optimization of Polysaccharide Extraction from <i>Polygonatum cyrtonema</i> Hua by Freeze-Thaw Method Using Response Surface Methodology.","authors":"Ziming Wang, Shushen Wu, Jiayi Wang, Ci Yang, Yang Wang, Zhan Hu, Wei Cai, Lianghong Liu","doi":"10.3390/molecules29204879","DOIUrl":"https://doi.org/10.3390/molecules29204879","url":null,"abstract":"<p><p><i>Polygonatum cyrtonema</i> polysaccharides have a variety of pharmacological effects. The commonly used extraction methods include traditional hot water extraction, alkaline extraction, enzymatic hydrolysis method, ultrasonic-assisted extraction, etc., but there are problems such as low yield, high temperature, high cost, strict extraction conditions, and insufficient environmental protection. In this study, crude polysaccharide extraction from the <i>Polygonatum cyrtonema</i> Hua was performed using the freeze-thaw method. Response surface methodology (RSM), based on a three-level, three-variable Box-Behnken design (BBD), was employed to obtain the best possible combination of water-to-raw material ratio (A: 30-50), freezing time (B: 2-10 h), and thawing temperature (C: 40-60 °C) for maximum polysaccharide extraction. Using the multiple regression analysis and analysis of variance (ANOVA), the experimental data were fitted to a second-order polynomial equation and were used to generate the mathematical model of optimization experiments. The optimum extraction conditions were as follows: a water-to-raw material ratio of 36.95:1, a freezing time of 4.8 h, and a thawing temperature of 55.99 °C. Under the optimal extraction conditions, the extraction rate of <i>Polygonatum cyrtonema</i> Hua polysaccharide (PCP) was 65.76 ± 0.32%, which is well in close agreement with the value predicted by the model, 65.92%. In addition, PCP has significant antioxidant activity. This result shows that the freeze-thaw method can improve the extraction efficiency, maintain the structural integrity of polysaccharides, simplify the extraction process, promote the dispersion of polysaccharides, and is suitable for large-scale industrial production.</p>","PeriodicalId":19041,"journal":{"name":"Molecules","volume":null,"pages":null},"PeriodicalIF":4.2,"publicationDate":"2024-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11510550/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142504704","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
Extraction Method Effects on Structural Properties and Functional Characteristics of Dietary Fiber Extracted from Ginseng Residue. 提取方法对从人参残渣中提取的膳食纤维的结构特性和功能特征的影响
IF 4.2 2区 化学
Molecules Pub Date : 2024-10-14 DOI: 10.3390/molecules29204875
Xiaoyu Feng, Kashif Ameer, Karna Ramachandraiah, Guihun Jiang
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