Facta Universitatis - Series: Physics, Chemistry and Technology最新文献_第2页

Assignment of 1H and 13C NMR spectral data of diastereomeric acetals directly from their mixture by spectral simulation 用光谱模拟方法直接从非对映异构缩醛混合物中提取缩醛的1H和13C NMR数据

Facta Universitatis - Series: Physics, Chemistry and Technology Pub Date : 2021-01-01 DOI: 10.2298/fupct2102069n

Milan Nešić, N. Radulović

引用次数: 1

Degree of cotton fabric whiteness obtained by the fluorescent bleaching agent UVITEX BHT and H2O2 用荧光漂白剂UVITEX BHT和H2O2得到的棉织物白度

Facta Universitatis - Series: Physics, Chemistry and Technology Pub Date : 2020-01-01 DOI: 10.2298/FUPCT2001057M

M. Miljkovic, Vojkan Miljković, D. Trajković, S. Konstantinović

引用次数: 0

Synthesis and spectroscopic characterization of new solid solution containing Mg(II) and Cu(II) complexes with hexadentate 1,3-propanediaminen, N,N’,N’-tetraacetate (1,3-pdta) ligand: In vitro antifungal activity of 1,3-pdta-Cu(II) complexes 含六齿1,3-丙二胺，N,N '，N ' -四乙酸(1,3-pdta)配体的Mg(II)和Cu(II)配合物的合成和光谱表征:1,3-pdta-Cu(II)配合物的体外抗真菌活性

Facta Universitatis - Series: Physics, Chemistry and Technology Pub Date : 2020-01-01 DOI: 10.2298/FUPCT2001047S

M Ivana Stanojevic, Jelena Gitarić, P. Asanin, Biljana Glisic Dj., S. Drašković, P. Zivkovic, P. T. Vasic

{"title":"Synthesis and spectroscopic characterization of new solid solution containing Mg(II) and Cu(II) complexes with hexadentate 1,3-propanediaminen, N,N’,N’-tetraacetate (1,3-pdta) ligand: In vitro antifungal activity of 1,3-pdta-Cu(II) complexes","authors":"M Ivana Stanojevic, Jelena Gitarić, P. Asanin, Biljana Glisic Dj., S. Drašković, P. Zivkovic, P. T. Vasic","doi":"10.2298/FUPCT2001047S","DOIUrl":"https://doi.org/10.2298/FUPCT2001047S","url":null,"abstract":"New solid solution containing Mg(II) and Cu(II) complexes with hexadentate 1,3-propanediamine-N,N,N?,N?-tetraacetate ligand (1,3-pdta), [Mg(H2O)6] [Mg0.5Cu0.5(1,3-pdta)].2H2O was synthesized and structurally characterized by elemental microanalyses, molar conductivity, and spectroscopic (IR and UV-Vis) measurements. The spectroscopic data of [Mg(H2O)6][Mg0.5Cu0.5(1,3-pdta)].2H2O were compared with those for [Mg(H2O)6][Cu(1,3-pdta)].2H2O complex of the known molecular structure determined by single-crystal X-ray diffraction analysis. In vitro growth inhibition activity of [Mg(H2O)6][Mg0.5Cu0.5(1,3-pdta)].2H2O and [Mg(H2O)6][Cu(1,3-pdta)].2H2O against Colletotrichum acutatum and their effects on this fungus sporulation level are investigated. The obtained results showed that the highest percentage of inhibition for mycelium growth was achieved at a concentration of 500 ?g/mL for the investigated complexes. The biological activities of the investigated complexes were compared with those for the commercial formulation of fungicide captan (Method 480 SC).","PeriodicalId":12248,"journal":{"name":"Facta Universitatis - Series: Physics, Chemistry and Technology","volume":"2014 1","pages":"47-56"},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88199182","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

Free fatty acid composition of Ramaria aurea (Schaeff.) Quél. 金莲(Ramaria aurea)游离脂肪酸组成嘧啶醇。

Facta Universitatis - Series: Physics, Chemistry and Technology Pub Date : 2020-01-01 DOI: 10.2298/FUPCT2002099M

A. Miltojević, I. Milovanović, N. Radulović

{"title":"Free fatty acid composition of Ramaria aurea (Schaeff.) Quél.","authors":"A. Miltojević, I. Milovanović, N. Radulović","doi":"10.2298/FUPCT2002099M","DOIUrl":"https://doi.org/10.2298/FUPCT2002099M","url":null,"abstract":"Ramaria aurea (Schaeff) Qu?l., known as the golden coral, is an edible mushroom with a worldwide distribution, but there are scarce data on its chemical composition. Free fatty acids (FAs) from this fungal species have never been analyzed before, although it is known that FAs are linked with key physiological and biochemical processes, and thus, they essential for the proper functioning of various ecosystems. Moreover, there are no literature data on the chemical composition of R. aurea from Serbia. Herein, we report on the GC-MS characterization of a diethyl-ether extract of R. aurea fruit bodies collected in the region of Mt. Mali Jastrebac (central Serbia), with the focus on the free FAs profile, investigated using a method of FA derivatization by diazomethane. The GC-MS analysis enabled the identification of around 60 components, among which more than a half were methyl esters of saturated and unsaturated FAs, comprising 88% of the total extract. The rather diverse and complex free FA profile of R. aurea was dominated by monounsaturated FAs (ca. 35% of the total extract) with oleic acid as the most abundant constituent (ca. 34%). Polyunsaturated and saturated FAs were present in almost equal amounts, ca. 26% and 24%, respectively. The major polyunsaturated FA was linoleic (ca. 26%), while the principal saturated FA was palmitic acid (ca. 15%). The content of total saturated and mono- and polyunsaturated FAs, as well their ratio, could be used as an indicator of the potential nutritional and medicinal use of this mushroom.","PeriodicalId":12248,"journal":{"name":"Facta Universitatis - Series: Physics, Chemistry and Technology","volume":"56 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79099115","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: 1

Attractor behaviour of holographic inflation model for inverse cosine hyperbolic potential 反余弦双曲势全息膨胀模型的吸引子行为

Facta Universitatis - Series: Physics, Chemistry and Technology Pub Date : 2020-01-01 DOI: 10.2298/FUPCT2001065D

D. Dimitrijevic, G. Djordjevic, M. Milošević, Marko Stojanovic

引用次数: 0

Organic thiocyanates - glucosinolate enzymatic degradation products or artefacts of the isolation procedure? 有机硫氰酸酯-硫代葡萄糖苷酶解产物或人工产物的分离程序?

Facta Universitatis - Series: Physics, Chemistry and Technology Pub Date : 2020-01-01 DOI: 10.2298/FUPCT2002077T

Milica Todorovska-Rasic, N. Radulović

{"title":"Organic thiocyanates - glucosinolate enzymatic degradation products or artefacts of the isolation procedure?","authors":"Milica Todorovska-Rasic, N. Radulović","doi":"10.2298/FUPCT2002077T","DOIUrl":"https://doi.org/10.2298/FUPCT2002077T","url":null,"abstract":"Glucosinolates are abundant in plants of the order Brassicales, and they are degraded by myrosinases into various organic breakdown products: isothiocyanates, thiocyanates, nitriles, etc., depending on their structure, conditions of hydrolysis, the presence of certain protein cofactors. Their most common hydrolysis products are isothiocyanates, while simple nitriles, epithionitriles, and thiocyanates are produced occasionally. Organic thiocyanates are described from a very limited number of Brassicales taxa. Up to now benzyl, (4-hydroxyphenyl)methyl, (4-methoxyphenyl)methyl, 4- methylthiobutyl, and allyl thiocyanates were reported as products of glucosinolates autolysis. The present review summarizes the knowledge on the mechanism of organic thiocyanate formation from the corresponding thioglucosides. The enzymatic formation of organic thiocyanates is believed to be enabled by thiocyanate-forming protein (TFP), but they could be formed via metabolic routes that do not involve TFP. All of the reported thiocyanates are produced from stable (carbo)cationic species that allow an isomerization of an isothiocyanate to thiocyanate, and vice versa. Although the possibility that thiocyanates can be biosynthesized in plats under certain conditions cannot be dismissed, allyl thiocyanate can be a thermal isomerization artefact of the original isothiocyanate that is formed in the heated zones of the gas chromatograph, while other thiocyanates could form in an aqueous medium via heterolytic dissociation to ambident nucleophilic SCN- and its recapture. One should always be aware of this analytical shortcoming when concluding on the presence and quantity of these specific (iso)thiocyanantes in the analyzed sample.","PeriodicalId":12248,"journal":{"name":"Facta Universitatis - Series: Physics, Chemistry and Technology","volume":"24 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75288371","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: 1

Sambucus racemosa L. fruit extracts obtained with conventional and deep eutectic solvents 用常规溶剂和深共晶溶剂制备总状参果提取物

Facta Universitatis - Series: Physics, Chemistry and Technology Pub Date : 2020-01-01 DOI: 10.2298/FUPCT2002089M

Vojkan Miljković, Biljana Djordjevic, B. Arsić, M. Marković, L. Nikolić, Z. Todorović, G. Nikolić

{"title":"Sambucus racemosa L. fruit extracts obtained with conventional and deep eutectic solvents","authors":"Vojkan Miljković, Biljana Djordjevic, B. Arsić, M. Marković, L. Nikolić, Z. Todorović, G. Nikolić","doi":"10.2298/FUPCT2002089M","DOIUrl":"https://doi.org/10.2298/FUPCT2002089M","url":null,"abstract":"This study aimed to provide information on the extraction yields, total phenols, total flavonoids, antioxidant activity, and qualitative-quantitative chemical composition of the extracts obtained from the dried fruit of Sambucus racemosa L. with conventional solvents (methanol, acetone, chloroform) and deep eutectic solvents (choline chloride urea and choline chloride glycerol). Solid-liquid extraction, Folin- Ciocalteu method, DPPH free radical scavenging, HPLC-UV/VIS were the methods used in this study. The highest extraction yield (18%) was obtained with ChCl:G as an extragent. The highest amount of total flavonoids was the content of this extract (12.3 mg QE/g d.e.). Extracts obtained with acetone and ChCl:U possess the highest amount of total phenol content (125.26 and 104.38 mg GAE/g d.e. respectively). All tested extracts showed free radical scavenging activity. Identified components of extracts are gallic acid, rutin, caftaric acid, caffeic acid, hyperoside, vitexin, and quercetin. Fruit extracts of S. racemosa are a rich source of phenols and flavonoids. The extracts obtained with DESs are more active in free radical scavenging than those obtained with conventional solvents, and possess qualitatively and quantitatively more components, apart from vitexin that was detected only in the methanol extract.","PeriodicalId":12248,"journal":{"name":"Facta Universitatis - Series: Physics, Chemistry and Technology","volume":"20 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81459064","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

Structural, magnetic and up-conversion properties of YF3: Yb/Ln (Ln = Er, Tm, Ho) solid solutions YF3: Yb/Ln (Ln = Er, Tm, Ho)固溶体的结构、磁性和上转换性能

Facta Universitatis - Series: Physics, Chemistry and Technology Pub Date : 2020-01-01 DOI: 10.2298/FUPCT2002119A

J. Aleksic, T. Barudžija, M. Mitrić, M. Bošković, Z. Ristić, Ljiljana Kostić

引用次数: 0

Single-electron capture in ion-ion collisions 离子-离子碰撞中的单电子捕获

Facta Universitatis - Series: Physics, Chemistry and Technology Pub Date : 2020-01-01 DOI: 10.2298/FUPCT2002131D

D. Delibašić, N. Milojević, I. Mančev

引用次数: 0

Evaluation of the constructed 3D models of RNAs: A review 评价构建的rna三维模型:综述

Facta Universitatis - Series: Physics, Chemistry and Technology Pub Date : 2020-01-01 DOI: 10.2298/FUPCT2001039A

B. Arsić, Boris Furtula, M. Randjelovic

引用次数: 0