Ovidius University Annals of Chemistry最新文献_第8页

Spectral investigations of some piperidin-4-one molecular addition compounds 一些胡椒碱-4- 1分子加成化合物的光谱研究

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Ovidius University Annals of Chemistry Pub Date : 2020-01-01 DOI: 10.2478/auoc-2020-0005

J. Chakkaravarthy, I. Muthuvel, G. Thirunarayanan

引用次数: 0

Cellulose fibers extraction from Ulva lactuca from the Black Sea 从黑海黑桫椤中提取纤维素纤维

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Ovidius University Annals of Chemistry Pub Date : 2020-01-01 DOI: 10.2478/AUOC-2020-0025

Doiniţa-Roxana Cioroiu Tirpan, C. Koncsag, T. Dobre

引用次数: 0

Effect of ethanol extract of Telfairia occidentalis leaf on some biochemical parameters of 2,4-dinitrophenyl hydrazine induced oxidative stress in albino rats 西洋参叶乙醇提取物对2,4-二硝基苯肼诱导的白化大鼠氧化应激生化指标的影响

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Ovidius University Annals of Chemistry Pub Date : 2020-01-01 DOI: 10.2478/auoc-2020-0019

O. E. Seyifunmi, A. Ajayi

{"title":"Effect of ethanol extract of Telfairia occidentalis leaf on some biochemical parameters of 2,4-dinitrophenyl hydrazine induced oxidative stress in albino rats","authors":"O. E. Seyifunmi, A. Ajayi","doi":"10.2478/auoc-2020-0019","DOIUrl":"https://doi.org/10.2478/auoc-2020-0019","url":null,"abstract":"Abstract In this study, we attempt to verify the claim that the leaf-extract of Telfairia occidentalis can remedy oxidative damage condition as well as assess its phytochemical content. Fifteen male albino rats weighing 180 g to 240 g were randomly divided into three groups of five rats each. Group A was designated the control group while group B and C were both induced with 40 mg/kg body weight 2,4-dinitrophenyl hydrazine. Group C was subsequently treated with 200 mg/kg body weight of ethanol extract of T. occidentalis leaf for 21 days. At the end of the treatment, the animals were sacrificed, and serum of the samples were subjected to relevant tests. Result shows that the plant leaf contained saponin, tannins, alkaloids, flavonoids and phenols whereas, terpenes, steroids and anthraquinones were not detected. The serum enzymes alanine aminotransferase (ALT) and alkaline phosphatase (ALP) were significantly elevated from 17.43 u/L and 28.40 u/L to 21.60 u/L and 34.27 u/L respectively. These were significantly lowered in the group C to 18.37 u/L and 29.23 u/L respectively for ALT and ALP. Also, a significant lowering of superoxide dismutase (SOD) activity was observed in the treated group (54.33 u/mg) from 79.40 u/mg recorded in the intoxicated group. Similarly, a significant decrease in malondialdehyde was observed in the treated group (25.80 u/mg) relative to the intoxicated group (35.87 u/mg). Moreover, catalase activity in the treated group (7.43 u/mg) was significantly lower compared with the intoxicated group. Our observation confirmed that ethanolic leaf extract of T. occidentalis reversed the oxidative damage condition in albino rats. The result confirms the ethnomedicinal use of the plant in the management of oxidative stress related diseases.","PeriodicalId":19641,"journal":{"name":"Ovidius University Annals of Chemistry","volume":"15 1","pages":"106 - 109"},"PeriodicalIF":0.9,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87146909","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

Isolation of an isoflavonoid and a terpenoid from the heartwood of Baphia nitida Lodd. (camwood) 一种异黄酮和萜类化合物的分离纯化。(紫木)

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Ovidius University Annals of Chemistry Pub Date : 2020-01-01 DOI: 10.2478/auoc-2020-0002

G. Ndukwe, A. Oluah, G. K. Fekarurhobo

引用次数: 7

Texture and rheological evaluation of aerated confectionery 充气糖果的质地和流变学评价

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Ovidius University Annals of Chemistry Pub Date : 2020-01-01 DOI: 10.2478/auoc-2020-0012

Sergiu Pădureț, R. Zimbru, Sonia Amariei

{"title":"Texture and rheological evaluation of aerated confectionery","authors":"Sergiu Pădureț, R. Zimbru, Sonia Amariei","doi":"10.2478/auoc-2020-0012","DOIUrl":"https://doi.org/10.2478/auoc-2020-0012","url":null,"abstract":"Abstract Confectionery industry represents a field that uses a large number of ingredients and techniques to develop unique sweet products. To produce aerated confectionery samples two different procedures were used to incorporate the ingredients in the beating vegetable or dairy cream. The objective of this research was to determine the texture parameters and the viscoelastic properties of aerated confections using compression stress-relaxation test and applying a modified Maxwell model. The highest fat content was presented by dairy cream aerated samples (20.04-20.25%), while the samples based on vegetable cream displayed a lower fat content. By applying the modified Maxwell mechanical model to the relaxation curves the equilibrium stress, σe, relaxation time, λrel, viscosity, η, and modulus of elasticity, G0, were determined. The aerated samples’ viscosity was greater than 137.96 kPa·s and less than 451.793 kPa·s; furthermore, Pearson correlation showed that density influences positively this rheological parameter (r = 0.955*). Fixing air into the product structure causes a decrease in density (0.388-0.788 g/cm3), leading to a lower equilibrium stress, a lower elasticity modulus and also a decrease of viscosity and relaxation time.","PeriodicalId":19641,"journal":{"name":"Ovidius University Annals of Chemistry","volume":"90 1","pages":"60 - 65"},"PeriodicalIF":0.9,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83456519","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

Synthesis and pharmacological evaluation of some benzylidene-4-nitroanilines 一些苄基-4-硝基苯胺类化合物的合成及药理评价

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Ovidius University Annals of Chemistry Pub Date : 2020-01-01 DOI: 10.2478/auoc-2020-0011

R. Suresh, S. P. Sakthinathan, D. Kamalakkannan, I. Muthuvel, G. Thirunarayanan

引用次数: 2

Ultrasound assisted synthesis and pharmacological evaluation of some (E)-1,2,3-triphenylprop-2-en-1-ones 超声辅助合成一些(E)-1,2,3-三苯基丙烷-2-烯-1的药理评价

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Ovidius University Annals of Chemistry Pub Date : 2020-01-01 DOI: 10.2478/AUOC-2020-0024

V. Mala, I. Muthuvel, G. Thirunarayanan, S. P. Sakthinathan, R. Arulkumaran, Venkatesan Mani, R. Sundararajan, D. Kamalakkannan, R. Suresh, Veeramalai Usha

引用次数: 0

Chemometric analysis of drinking water quality parameters of Sagar city, Madhya Pradesh, India 印度中央邦萨加尔市饮用水水质参数的化学计量学分析

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Ovidius University Annals of Chemistry Pub Date : 2020-01-01 DOI: 10.2478/auoc-2020-0018

H. Pathak

{"title":"Chemometric analysis of drinking water quality parameters of Sagar city, Madhya Pradesh, India","authors":"H. Pathak","doi":"10.2478/auoc-2020-0018","DOIUrl":"https://doi.org/10.2478/auoc-2020-0018","url":null,"abstract":"Abstract The present study uses numerous chemometric techniques to evaluate and interpret a water quality data obtained from the drinking water resources namely municipal water (supplied by Rajghat dam on Bewas River), bore well, ground water of Sagar city, a divisional headquarter of Madhya Pradesh, India. Data was collected from May 2018 to June 2019 for 10 parameters used to assess the status of the water quality. Water quality was monitored at 15 sampling stations along the entire district. The data were analyzed using chemometric analysis such as principal component analysis, correlation matrix, multivariate linear regression analysis and hierarchical cluster analysis that reduced the data dimensions for better interpretation. Results of statistical analysis expressed that slightly higher value of BOD in some areas due to sewage contamination, need of chlorination treatment required at those places. This study also presents the value of diverse statistical methods for assessment and analysis of drinking water quality data for the reason of monitoring the effectiveness of water resource management. The study indicated that the maximum quality parameters of drinking water is in permissible limits of WHO and IS: 10500 guidelines on entire study places.","PeriodicalId":19641,"journal":{"name":"Ovidius University Annals of Chemistry","volume":"40 1","pages":"99 - 105"},"PeriodicalIF":0.9,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89669388","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

Quantitative and qualitative basement of microbial presence during phytoremediation of heavy metal polluted soil using Chromolaena odorata 植物修复重金属污染土壤中微生物存在的定量和定性基础

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Ovidius University Annals of Chemistry Pub Date : 2020-01-01 DOI: 10.2478/AUOC-2020-0023

G. Omoregie, A. Ogofure, B. Ikhajiagbe, G. O. Anoliefo

{"title":"Quantitative and qualitative basement of microbial presence during phytoremediation of heavy metal polluted soil using Chromolaena odorata","authors":"G. Omoregie, A. Ogofure, B. Ikhajiagbe, G. O. Anoliefo","doi":"10.2478/AUOC-2020-0023","DOIUrl":"https://doi.org/10.2478/AUOC-2020-0023","url":null,"abstract":"Abstract The presence and impact of bulk and rhizosphere microorganisms in contaminated soils can be huge, given that they have the ability to increase plants tolerance against abiotic stress, and also enhance plant growth, while supporting hastened remediation of disturbed soils. The present study quantitatively and qualitatively assessed presence of cultural fungi and bacteria during phytoremediation of heavy metal polluted soils using Chromolaena odorata. Stem cuttings of C. odorata were planted in soils polluted with Pb, Mn, Zn, Cd, and Cu at once (1ESC), thrice (3ESC) and five (5ESC) times their respective ecological screening concentrations (ESC). ESC of Pb, Mn and Zn is 50 mg/kg, Cd is 4 mg/kg, and Cu is 100 mg/kg. After 6 months, results showed that more than 10 species of bacteria and fungi were identified in the study, with P. aeruginosa and Bacillus subtilis being the most occurring bacteria while, Penicillium sp. and Aspergillus niger the most occurring fungi in both bulk and rhizospheric soils. The presence of known plant growth promoting rhizobacteria in plants rhizosphere including Azotobacter sp., Bacillus subtilis, B. pumilus, Clostridium sp., P. aeruginosa, and Klebsiella sp. was also reported.","PeriodicalId":19641,"journal":{"name":"Ovidius University Annals of Chemistry","volume":"90 1","pages":"145 - 151"},"PeriodicalIF":0.9,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81133708","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

Optimization of SPE method for the extraction of 12 neurotransmitters from sheep brain 固相萃取法提取绵羊脑中12种神经递质的优化

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Ovidius University Annals of Chemistry Pub Date : 2020-01-01 DOI: 10.2478/auoc-2020-0020

Raluca Tampu, C. Tâmpu, C. Elfakir

引用次数: 0