scholarly journals Phytochemical Profile and Antimicrobial Potential of Extracts Obtained from Thymus marschallianus Willd

Molecules ◽  
2019 ◽  
Vol 24 (17) ◽  
pp. 3101 ◽  
Author(s):  
Niculae ◽  
Hanganu ◽  
Oniga ◽  
Benedec ◽  
Ielciu ◽  
...  
Keyword(s):  
Antibacterial Activity ◽  
Rosmarinic Acid ◽  
Polyphenolic Compounds ◽  
Qualitative And Quantitative Analysis ◽  
Broth Microdilution ◽  
Medicinal Species ◽  
Total Polyphenols ◽  
Qualitative And Quantitative ◽  
Antibacterial Assay ◽  
Phytochemical Profile

Thymus marschallianus Willd. is a Lamiaceae species spread in a large variety of habitats worldwide. The aim of the present research was to analyse two different samples belonging to this species, one obtained from the spontaneous flora and one from culture. The total polyphenols, flavonoids, and phenolic acid contents were spectrophotometrically determined. Qualitative and quantitative analysis of polyphenols was performed by an HPLC-DAD-ESI (+)-MS method. For the antibacterial assay, the well-diffusion and the broth microdilution methods were used. Analysis of polyphenols revealed for both samples the presence of flavonoids like luteolin, quercetin, apigenin and their derivatives, but also of rosmarinic acid and methyl-rosmarinate. Differences regarding the amount of these compounds were emphasized. Significantly larger amounts of flavonoids were found for the sample harvested in the spontaneous flora, while for the rosmarinic acid, larger amounts were found for the cultured sample. Both samples displayed promising antibacterial activity, particularly towards Gram positive organisms. T. marschallianus represents, therefore, a rich source of polyphenolic compounds that prove its promising potential as a medicinal species.

scholarly journals Preliminary Qualitative and Quantitative Phytochemical Profiling of Aristolochia Tagala Cham. A Rare Medicinal Plant

2020 ◽  
Vol 10 (5) ◽  
Author(s):  
Sharma G. S. Shailaja ◽  
Rajanna L.
Keyword(s):  
Medicinal Plant ◽  
Leaf Extract ◽  
Qualitative And Quantitative Analysis ◽  
Volatile Oils ◽  
Tropical Regions ◽  
Qualitative And Quantitative ◽  
Leaf Powder ◽  
Data Source ◽  
Phytochemical Profile ◽  
High Concentrations

Aristolochia tagala Cham. is a rare medicinal plant found in certain tropical regions of the world. During the present investigation, a detailed preliminary qualitative and quantitative analysis were carried out to know the phytochemical profile of the leaves of A. tagala. The leaf powder was extracted with three solvents having different polarities and subjected for analysis. The extracts showed the presence of carbohydrates, proteins, alkaloids, phenolics, flavonoids, tannins, terpenoids, steroids, glycosides and volatile oils whereas saponins, non-volatile oils, gums and mucilage were completely absent. In quantification experiments, chloroform leaf extract showed high concentrations of phenolics, flavonoids and flavonols while methanolic leaf extract showed abundant alkaloids. This preliminary phytochemical profile can be used as a data source for the isolation of phenolic and alkaloid compounds. The isolated compounds can be used for their specific biological activity and based on their curative properties they may be used for the formulation of drugs.

Extraction, preparative monomer separation and antibacterial activity of total polyphenols from Perilla frutescens

2021 ◽  
Author(s):  
Yana Zhao ◽  
Huizhen Li ◽  
Zhijun Zhang ◽  
Zhiqing Ren ◽  
Fuhan Yang
Keyword(s):  
Antibacterial Activity ◽  
Caffeic Acid ◽  
Rosmarinic Acid ◽  
Perilla Frutescens ◽  
Total Polyphenols ◽  
Ethanol Extraction ◽  
Functional Activities ◽  
Ultrasonic Assisted ◽  
Ultrasound Assisted

Polyphenols display potential functional activities especially for rosmarinic acid (RosA) and caffeic acid (CafA). In this study, two different methods including ultrasonic-assisted ethanol extraction (60%) and ultrasound-assisted cellulase (≥ 15000...

scholarly journals The Qualitative And Quantitative Determination Of The Phenolic Compounds In Polygonum Convolvulus L. Species, Polygonaceae Family

2013 ◽  
Vol 59 (3) ◽  
pp. 162-164 ◽  
Author(s):  
O T Olaru ◽  
Adriana Iuliana Anghel ◽  
Viorica Istudor ◽  
Iulia Ioana Olaru
Keyword(s):  
Phenolic Compounds ◽  
Quantitative Determination ◽  
Polyphenolic Compounds ◽  
Phytochemical Screening ◽  
Total Polyphenols ◽  
Qualitative And Quantitative ◽  
Polygonum Convolvulus ◽  
Subalpine Zone ◽  
Layer Chromatography

Abstract Introduction: Polygonum convolvulus L. (black bindweed), syn. Fallopia convolvulus (L.) Á. Löve, Polygonaceae family is a plant from the spontaneous flora, spread from the plain zone up to the subalpine zone. The objectives of our researches are the qualitative and quantitative determination of polyphenolic compounds from Polygoni convolvuli herba and the choice of the adequate solvent for obtaining an active pharmacological extract. Method: The qualitative exam consisted of phytochemical screening and thin layer chromatography. The quantitative determination of the total polyphenols was made through the Folin-Ciocâlteu method. Results: The flavonoids, the anthocyanins, the tannins and the phenol carboxylic acids (phytochemical screening) were emphasized and the following compounds were identified: rutin, hyperoside, isoquercitroside, quercetin, myricetin, kaempferol and caffeic acid. Conclusions: In order to establish the technological lab process for obtaining an active pharmacological extract standardized in total polyphenols the adequate solvent is ethanol 50% (v/v).

Designing a business unit and creating the first ever responsive kitchen

2019 ◽  
Vol 2 (1) ◽  
Author(s):  
Paolo FESTA ◽  
Tommaso CORA ◽  
Lucilla FAZIO
Keyword(s):  
Value Creation ◽  
Product Innovation ◽  
Research Laboratory ◽  
Direct Relationship ◽  
Multidisciplinary Approach ◽  
Design Thinking ◽  
Business Unit ◽  
Qualitative And Quantitative Analysis ◽  
Qualitative And Quantitative ◽  
The Relationship

Is it possible to transform stone into a technological and innovative device? The meeting with one of the main stone transformers in Europe produced the intention of a disruptive operation that could affect the strategy of the whole company. A contagious singularity. By intertwining LEAN methodologies and the human-centric approach of design thinking, we mapped the value creation in the company activating a dialogue with the workers and the management, listening to people, asking for ambitions, discovering problems and the potential of production. This qualitative and quantitative analysis conducted with a multidisciplinary approach by designers, architects and marketing strategists allowed us to define a new method. We used it to design a platform that could let all the players express their potential to the maximum. This is how the group's research laboratory was born, with the aim of promoting the relationship between humans and stone through product innovation. With this goal, we coordinated the new team, developing technologies that would allow creating a more direct relationship between man and surface, making the stone reactive. The result was the first responsive kitchen ever.

ANALISIS FAKTOR TINGKAT PENDIDIKAN DAN KOMPETENSI SUMBER DAYA MANUSIA TERHADAP PRODUKTIVITAS KERJA KARYAWAN PADA PT. TRAKTOR NUSANTARA CABANG LAMPUNG

2017 ◽  
Vol 2 (1) ◽  
pp. 46-63
Author(s):  
Raditee Sanusi Husin
Keyword(s):  
Work Productivity ◽  
Positive Influence ◽  
Education Level ◽  
Observation Data ◽  
Employee Productivity ◽  
Qualitative And Quantitative Analysis ◽  
Employee Education ◽  
Level Of Education ◽  
Qualitative And Quantitative ◽  
Level Variable

Achievement of company goals, PT. Traktor Nusantara often faces problems, where from within and from outside the company. One of the problems that comes from within the company in relation to human resources is the level of work productivity of employees who are still far from expectation. This is allegedly caused by the level of employee education that has not been in accordance with the function of office, in addition to the competence of employees who have not been in accordance with the field of work. This study aims to determine the influence of education level and competence on employee productivity. The sample used is 22 employees. Data collection techniques with questionnaires, documentation and observation. Data analysis with qualitative and quantitative analysis methods with the help of statistical tools SPSS application for linear regression model calculation. The results showed that the level of education has a positive influence on the productivity of employees of PT. Traktor Nusantara. The amount of influence of education level variable to productivity based on test of determination is equal to 38,1%. Competence influence on work productivity of employees of PT. Traktor Nusantara with contribution of 19.1%. The level of education and competence together have a positive influence and able to explain 38.2% of the changes in work productivity, while the remaining 4.7% sebesat is another variable outside the study.

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