Chemistry Proceedings最新文献

{"title":"Mesoporous Silica Systems Loaded with Polyphenols","authors":"G. Petrișor, Ludmila Motelica, R. Trusca, V. Ene, D. Ficai, O. Oprea, G. Voicu, A. Ficai","doi":"10.3390/chemproc2022007015","DOIUrl":"https://doi.org/10.3390/chemproc2022007015","url":null,"abstract":"In this work, we obtain mesoporous silica systems loaded with polyphenolic compounds (p-coumaric acid, trans-ferulic acid, epicatechin, and catechin). Polyphenolic compounds are used as biologically active agents for the treatment of various diseases. These compounds have high antioxidant activity. As a carrier, two types of mesoporous silica have been proposed and obtained according to the classical templating method with cetyltrimethylammonium bromide, CTAB, under alkaline conditions. Polyphenols (p-coumaric acid, trans-ferulic acid, epicatechin, and catechin) were loaded under vacuum into the mesoporous silica. The materials obtained were characterized by Scanning Electron Microscopy, X-ray Diffraction, the Brunauer–Emmett–Teller Method, Complex Thermal Analysis–DTA-TG and Fourier Transform Infrared Spectroscopy. In this study, mesoporous silica systems were obtained and further loaded with p-coumaric acid, trans-ferulic acid, epicatechin and catechin. The results highlight that the materials can be used as drug delivery systems, with the results being promising (simulated gastric fluid, SGF, and simulated intestinal fluid, SIF) for various environments. The proposed loading methodology is suitable for loading these natural agents, mostly, inside the pores.","PeriodicalId":9815,"journal":{"name":"Chemistry Proceedings","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77338469","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}

{"title":"Stability of Bioactive Extracts from Porphyridium purpureum Microalgae Biomass under Various Stress Factors","authors":"A. Vlaicu, Mihaela Cîlțea-Udrescu, A. Vintilă, Grigore Pșenovschi, Anca Paulenco, A. Galán","doi":"10.3390/chemproc2022007013","DOIUrl":"https://doi.org/10.3390/chemproc2022007013","url":null,"abstract":"Nowadays, the interest for high-quality products of natural origin is increasing worldwide [...]","PeriodicalId":9815,"journal":{"name":"Chemistry Proceedings","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79073385","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}

{"title":"Evaluation of the Catalytic Degradation Capacity of Green Synthesized Silver Nanoparticles on Bis-Azoic Dyes","authors":"A. Sorescu, A. Nuta, R. Ion, V. Rădițoiu, L. Marin","doi":"10.3390/chemproc2022007009","DOIUrl":"https://doi.org/10.3390/chemproc2022007009","url":null,"abstract":"Introduction: Silver nanoparticles (AgNPs), widely recognized for their antimicrobial and antioxidant capacity, can be prepared following both conventional and unconventional routes and have a multitude of applications in numerous scientific domains, including the catalytic degradation of dyes that result from the textile industry [...]","PeriodicalId":9815,"journal":{"name":"Chemistry Proceedings","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81530603","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}

{"title":"Treatment of Dairy Wastewaters Using Nannochloris sp. Microalgae Strain","authors":"A. Vintilă, A. Vlaicu, Mihaela Cîlțea-Udrescu, Luiza Mîrț, A. Galán, Anca Paulenco","doi":"10.3390/chemproc2022007011","DOIUrl":"https://doi.org/10.3390/chemproc2022007011","url":null,"abstract":"The dairy industry is one of the main sources of agro-industrial wastewater [...]","PeriodicalId":9815,"journal":{"name":"Chemistry Proceedings","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78356244","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}

{"title":"Exploring the Potential of Beneficial Paecilomyces to Improve Plant Growth","authors":"M. Constantin, I. Răut, A. Gurban, G. Vasilescu, M. Doni, N. Radu, E. Alexandrescu, L. Jecu","doi":"10.3390/chemproc2022007006","DOIUrl":"https://doi.org/10.3390/chemproc2022007006","url":null,"abstract":"Introduction: For sustainable agriculture, an attempt has been made to reduce the use of fertilizers and agrochemicals, replacing them instead with biostimulants as viable alternatives [...]","PeriodicalId":9815,"journal":{"name":"Chemistry Proceedings","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85263871","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}

{"title":"Use of Bacterial Carbonatogenesis for Construction Materials","authors":"I. Răut, M. Constantin, E. Alexandrescu, C. Ninciuleanu, M. Raduly, A. Gurban, M. Doni, I. Petre, C. Nicolae, N. Radu, G. Vasilescu, L. Jecu","doi":"10.3390/chemproc2022007002","DOIUrl":"https://doi.org/10.3390/chemproc2022007002","url":null,"abstract":"Concrete is the most used construction material, but its industrial production from lime consumes 2–3% of the global energy demand, generating 0 [...]","PeriodicalId":9815,"journal":{"name":"Chemistry Proceedings","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85310022","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}

{"title":"The Benefits of Applying Compost in Agriculture as Aronia Crops Fertilizer","authors":"Georgica Pandelea (Voicu), D. Ștefan, M. Călinescu, I. Mazilu, Camelia Ungureanu","doi":"10.3390/chemproc2022007008","DOIUrl":"https://doi.org/10.3390/chemproc2022007008","url":null,"abstract":"Introduction: This paper presents the preliminary results of a study that aims to emphasize the compost effect, when used as fertilizer, in Aronia melanocarpa crops [...]","PeriodicalId":9815,"journal":{"name":"Chemistry Proceedings","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83270403","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}

{"title":"Molecular Design of Functional Ingredients Starting from Natural Bioactive Compounds","authors":"Ioana Tabrea, A. Stefaniu, L. Pirvu, G. Sãvoiu","doi":"10.3390/chemproc2022007005","DOIUrl":"https://doi.org/10.3390/chemproc2022007005","url":null,"abstract":"In the last few years, a new concept of functional foods has been developed, leading to the diversification of food production [...]","PeriodicalId":9815,"journal":{"name":"Chemistry Proceedings","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85113767","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}

{"title":"Extraction of Germinated Seeds by Conventional and Modern Methods","authors":"D. Pasarin, Camelia Rovinaru, C. Matei","doi":"10.3390/chemproc2022007001","DOIUrl":"https://doi.org/10.3390/chemproc2022007001","url":null,"abstract":"The germination process of whole seeds activates and multiplies the composition of amino acids, antioxidants, vitamins, proteins, enzymes, and sugars, and decreases phytate and protease inhibitors concentrations. Furthermore, germination contributes to the improved digestibility of plant proteins; conversion of carbohydrates to simpler forms for easy assimilation; bioavailability of minerals; freeing up of minerals for absorption; and an increase of beneficial enzymes. The aim of this paper was to perform the extraction of alfalfa germinated seeds using conventional and modern methods for the purpose of physical-chemical characterization. The extraction of germinated seeds was carried out by several methods, namely conventional (hydro-alcoholic and autoclave extraction) and modern (ultrasound-assisted extraction) methods. For each method, the following parameters have been set: solvent/substrate ratio, temperature, and reaction time. Hydro-alcoholic extraction was performed according to the method described by Piantino et al. (2008) with minor modifications [1]. The parameters were as follows: ethanol:water ratio 70:30 v/v, reaction time 24 h, at room temperature, and stirred at 150 rpm. Autoclave extraction was performed according to the method described by Maurizio D’Auria (2021) using parameters temperature (121 °C), pressure (1 bar), and reaction time (15 min) [2]. Ultrasound-assisted extraction carried out according to the method described by Ahmad and Shehta (2020) with modifications [3]. The parameters were as follows: 70% ethanol, substrat:solvent ratio 1:10, reaction time 10, 20, 30 min, at room temperature in an ultrasonic bath. The proximate chemical composition analysis for each extract was performed, which refers to water content, total nitrogen, crude protein, carbohydrates, ash, and both macro and micro elements using standard methods. Following the comparative analysis of the preliminary results obtained for the four extracts, the modern method ultrasound-assisted extraction was selected. The mean percentage of chemical compounds was: moisture (at 105 °C) 78.2 ± 0.48%, crude protein 23 ± 1%, and ash (at 550 °C) 3.09 ± 0.004%. The preliminary chemical analysis of the extracts served as the basis for the selection of the extraction method. Conventional methods require a long time for extraction and use solvents at high costs. The interest in using modern methods for the extraction of germinated seeds is growing due to reduced reaction time and solvent volume involved and the accuracy of results obtained.","PeriodicalId":9815,"journal":{"name":"Chemistry Proceedings","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73961617","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}

{"title":"A Computational Study to Identify Some Potential Inhibitors of SARS-CoV-2 Main Protease from Biological Active Quinolones","authors":"L. Pintilie","doi":"10.3390/chemproc2022007010","DOIUrl":"https://doi.org/10.3390/chemproc2022007010","url":null,"abstract":"The coronavirus pandemic, known as COVID-19, is caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) [...]","PeriodicalId":9815,"journal":{"name":"Chemistry Proceedings","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74219605","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}