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Research and Development of New Processes for the Isolation of Volatile Aromatic Substances from Natural Materials 研究和开发从天然材料中分离挥发性芳香物质的新工艺
Chemické listy Pub Date : 2024-02-15 DOI: 10.54779/chl20240095
Justína Čuchorová, Jaroslav Blaško
{"title":"Research and Development of New Processes for the Isolation of Volatile Aromatic Substances from Natural Materials","authors":"Justína Čuchorová, Jaroslav Blaško","doi":"10.54779/chl20240095","DOIUrl":"https://doi.org/10.54779/chl20240095","url":null,"abstract":"This review presents available techniques used for the separation and subsequent identification of volatile organic compounds (VOC) from complex plant matrices. The first part defines the plant material as well as the VOC and their using in the food, pharmaceutical and cosmetic industries with specific examples. The next section relates to the most widely used techniques to separate VOCs from complex matrices, where the advantages, disadvantages and comparisons described differ according to their basic principles. Classical extraction, distillation or adsorption methods, as well as \"green\" membrane procedures are mentioned. The last part describes the method of identification of separated aromatic VOCs by gas chromatography, comprehensive gas chromatography, olfactometry, and the lesser-known electronic nose. The review provides comprehensive information about available metho­dologies for obtaining aromatic VOCs from sample pre-treatment to analyses and identification.","PeriodicalId":503422,"journal":{"name":"Chemické listy","volume":"417 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139834269","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
From the Natural to the Artificial 从自然到人工
Chemické listy Pub Date : 2024-02-15 DOI: 10.54779/chl20240077
Pavel Chuchvalec
{"title":"From the Natural to the Artificial","authors":"Pavel Chuchvalec","doi":"10.54779/chl20240077","DOIUrl":"https://doi.org/10.54779/chl20240077","url":null,"abstract":"","PeriodicalId":503422,"journal":{"name":"Chemické listy","volume":"248 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139835918","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
The Possibility of Spectroscopic Analysis of Model Samples of Modern Pigments 对现代颜料模型样品进行光谱分析的可能性
Chemické listy Pub Date : 2024-02-15 DOI: 10.54779/chl20240111
Eva Svobodová, Ivana Kopecká
{"title":"The Possibility of Spectroscopic Analysis of Model Samples of Modern Pigments","authors":"Eva Svobodová, Ivana Kopecká","doi":"10.54779/chl20240111","DOIUrl":"https://doi.org/10.54779/chl20240111","url":null,"abstract":"The identification of the composition of the paint layers (binders, additives, and pigments) is essential for the work of conservators and can also be used in many cases to determine the date of creation of works of modern art. Spectroscopic methods, specifically FTIR and Raman spectroscopy, are most commonly used to analyse modern pigments. These two methods complement each other and together provide a comprehensive view of the composition of the paint layer. The abilities of both spectroscopic techniques to identify pigments in the paint layer were investigated on a set of 24 model samples of pigment, the white, and binder mixtures and then verified by an analysis of a real sample.","PeriodicalId":503422,"journal":{"name":"Chemické listy","volume":"42 29","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139775678","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Use of Modern Computational Methods and Neural Networks to Optimize Methods for LC/MS/MS Analysis of Military-Relevant Organophosphorus Compounds 利用现代计算方法和神经网络优化军用有机磷化合物的 LC/MS/MS 分析方法
Chemické listy Pub Date : 2024-02-15 DOI: 10.54779/chl20240103
Dušan Trefilík
{"title":"Use of Modern Computational Methods and Neural Networks to Optimize Methods for LC/MS/MS Analysis of Military-Relevant Organophosphorus Compounds","authors":"Dušan Trefilík","doi":"10.54779/chl20240103","DOIUrl":"https://doi.org/10.54779/chl20240103","url":null,"abstract":"The search for the optimal instrumental settings of conditions in chemical analysis is typically a lengthy process. This article proposes the use of neural networks for this purpose, particularly in relation to determining the optimal conditions for the analysis of substances under study using LC/MS/MS and ESI technologies, based on the knowledge of their fundamental properties, referred to as universal descriptors. The work focuses on finding such analysis conditions that maximize the precursor ion signal. The paper specifically addresses the question of whether the results obtained from one type of analyte can be used for neural-interpolated prediction of optimal conditions for similar analytes.","PeriodicalId":503422,"journal":{"name":"Chemické listy","volume":"119 12","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139776647","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Production of Energy and Hydrogen within Chemical Plants Using Small Nuclear Reactors 利用小型核反应堆在化工厂内生产能源和氢气
Chemické listy Pub Date : 2024-02-15 DOI: 10.54779/chl20240118
M. Šilhan, Petr Polívka, Petra Dvořáková Ruskayová
{"title":"Production of Energy and Hydrogen within Chemical Plants Using Small Nuclear Reactors","authors":"M. Šilhan, Petr Polívka, Petra Dvořáková Ruskayová","doi":"10.54779/chl20240118","DOIUrl":"https://doi.org/10.54779/chl20240118","url":null,"abstract":"The article outlines the possibility of synergistic use of small nuclear reactors and low- and high-temperature electrolysis. The small modular nuclear reactor is compared to common types of renewables. Furthermore, possible small nuclear reactors application in chemical enterprises is shown.","PeriodicalId":503422,"journal":{"name":"Chemické listy","volume":"354 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139834328","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Biotechnological Production of Butanol 丁醇的生物技术生产
Chemické listy Pub Date : 2024-02-15 DOI: 10.54779/chl20240086
Barbora Branská
{"title":"Biotechnological Production of Butanol","authors":"Barbora Branská","doi":"10.54779/chl20240086","DOIUrl":"https://doi.org/10.54779/chl20240086","url":null,"abstract":"The biotechnological production of butanol and other accompanying solvents has a history of more than a century and currently represents an alternative to produce desirable chemicals from various waste streams, in accordance with the concept of the circular economy. This review article summarizes the current state of potential industrial production, introduces the main solvent producers, solventogenic clostridia and their metabolism, together with the main aspects that influence physiological and production characteristics. The last part is devoted to substrates that can be used for biobutanol production, in particular lignocellulose, a ubiquitous waste plant matter, with great potential in connection with the large-scale biotechnological production of many commodities.","PeriodicalId":503422,"journal":{"name":"Chemické listy","volume":"80 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139834913","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Use of Modern Computational Methods and Neural Networks to Optimize Methods for LC/MS/MS Analysis of Military-Relevant Organophosphorus Compounds 利用现代计算方法和神经网络优化军用有机磷化合物的 LC/MS/MS 分析方法
Chemické listy Pub Date : 2024-02-15 DOI: 10.54779/chl20240103
Dušan Trefilík
{"title":"Use of Modern Computational Methods and Neural Networks to Optimize Methods for LC/MS/MS Analysis of Military-Relevant Organophosphorus Compounds","authors":"Dušan Trefilík","doi":"10.54779/chl20240103","DOIUrl":"https://doi.org/10.54779/chl20240103","url":null,"abstract":"The search for the optimal instrumental settings of conditions in chemical analysis is typically a lengthy process. This article proposes the use of neural networks for this purpose, particularly in relation to determining the optimal conditions for the analysis of substances under study using LC/MS/MS and ESI technologies, based on the knowledge of their fundamental properties, referred to as universal descriptors. The work focuses on finding such analysis conditions that maximize the precursor ion signal. The paper specifically addresses the question of whether the results obtained from one type of analyte can be used for neural-interpolated prediction of optimal conditions for similar analytes.","PeriodicalId":503422,"journal":{"name":"Chemické listy","volume":"75 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139836248","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Research and Development of New Processes for the Isolation of Volatile Aromatic Substances from Natural Materials 研究和开发从天然材料中分离挥发性芳香物质的新工艺
Chemické listy Pub Date : 2024-02-15 DOI: 10.54779/chl20240095
Justína Čuchorová, Jaroslav Blaško
{"title":"Research and Development of New Processes for the Isolation of Volatile Aromatic Substances from Natural Materials","authors":"Justína Čuchorová, Jaroslav Blaško","doi":"10.54779/chl20240095","DOIUrl":"https://doi.org/10.54779/chl20240095","url":null,"abstract":"This review presents available techniques used for the separation and subsequent identification of volatile organic compounds (VOC) from complex plant matrices. The first part defines the plant material as well as the VOC and their using in the food, pharmaceutical and cosmetic industries with specific examples. The next section relates to the most widely used techniques to separate VOCs from complex matrices, where the advantages, disadvantages and comparisons described differ according to their basic principles. Classical extraction, distillation or adsorption methods, as well as \"green\" membrane procedures are mentioned. The last part describes the method of identification of separated aromatic VOCs by gas chromatography, comprehensive gas chromatography, olfactometry, and the lesser-known electronic nose. The review provides comprehensive information about available metho­dologies for obtaining aromatic VOCs from sample pre-treatment to analyses and identification.","PeriodicalId":503422,"journal":{"name":"Chemické listy","volume":"4 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139774787","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
From the Natural to the Artificial 从自然到人工
Chemické listy Pub Date : 2024-02-15 DOI: 10.54779/chl20240077
Pavel Chuchvalec
{"title":"From the Natural to the Artificial","authors":"Pavel Chuchvalec","doi":"10.54779/chl20240077","DOIUrl":"https://doi.org/10.54779/chl20240077","url":null,"abstract":"","PeriodicalId":503422,"journal":{"name":"Chemické listy","volume":"23 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139776457","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Biotechnological Production of Butanol 丁醇的生物技术生产
Chemické listy Pub Date : 2024-02-15 DOI: 10.54779/chl20240086
Barbora Branská
{"title":"Biotechnological Production of Butanol","authors":"Barbora Branská","doi":"10.54779/chl20240086","DOIUrl":"https://doi.org/10.54779/chl20240086","url":null,"abstract":"The biotechnological production of butanol and other accompanying solvents has a history of more than a century and currently represents an alternative to produce desirable chemicals from various waste streams, in accordance with the concept of the circular economy. This review article summarizes the current state of potential industrial production, introduces the main solvent producers, solventogenic clostridia and their metabolism, together with the main aspects that influence physiological and production characteristics. The last part is devoted to substrates that can be used for biobutanol production, in particular lignocellulose, a ubiquitous waste plant matter, with great potential in connection with the large-scale biotechnological production of many commodities.","PeriodicalId":503422,"journal":{"name":"Chemické listy","volume":"13 12","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139775325","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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