scholarly journals Organic cotton fabric dyed with dyer's oak and barberry dye by microwave irradiation and conventional methods

2021 ◽  
Vol 72 (01) ◽  
pp. 30-38
Author(s):  
YESIM BANU BUYUKAKINCI ◽  
RECEP KARADAG ◽  
EMINE TORGAN GUZEL
Keyword(s):  
Microwave Irradiation ◽  
Gallic Acid ◽  
High Performance ◽  
Cotton Fabrics ◽  
Array Detector ◽  
Time Saving ◽  
Organic Cotton ◽  
Berberis Vulgaris ◽  
Dyed Fabrics ◽  
Quercus Infectoria

In this work, organic cotton fabrics were dyed using barberry (Berberis vulgaris L.), dyer’s oak (Quercus infectoria Olivier) and dyer’s oak + barberry (Quercus infectoria Olivier + Berberis vulgaris L.) by microwave irradiation and conventional dyeing methods. They were used in equal percentages. The dyed fabrics were analyzed by different analytical and technical methods. Colouring compounds were analyzed in the dyed fabrics, dye extractions (before dyeing bath and after dyeing bath) by High Performance Liquid Chromatography with Diode Array Detector (HPLC-DAD). Identified coloring compounds based on the dyestuff analysis were berberine, berberine derivative, phenolic acid, ellagic acid, ellegic acid derivatives, gallic acid and gallic acid derivative. Colour characteristics of all the dyed fabrics were measured by CIEL*a*b* spectrophotometer and pH values were determined by surface-pH meter. Scanning Electron Microscopy equipped with Energy Dispersive X-ray Spectrometer (SEM-EDX) was used for imaging and elemental analysis of the surfaces of the dyed organic cotton fabrics. The colouristic and colour fastness properties of the dyed fabrics were investigated and compared with each other. No damage was observed in the fabrics dyed by the microwave and conventional dyeing methods. Almost the same colour yields were obtained in both dyeings using different processing times. According to the analyses and test results, microwave irradiation method is very eligible compared to conventional dyeing methods, considering coloristic properties of dyed fabrics, time saving and the cost effectiveness wise.

scholarly journals Facile In Situ Synthesis of ZnO Flower-like Hierarchical Nanostructures by the Microwave Irradiation Method for Multifunctional Textile Coatings

Nanomaterials ◽  
2021 ◽  
Vol 11 (10) ◽  
pp. 2574
Author(s):  
Maria Antonia Tănase ◽  
Andreia Cristina Soare ◽  
Petruţa Oancea ◽  
Adina Răducan ◽  
Cătălin Ionuţ Mihăescu ◽  
...  
Keyword(s):  
Microwave Irradiation ◽  
Dye Degradation ◽  
Antibacterial Properties ◽  
Cotton Fabrics ◽  
In Situ Synthesis ◽  
Zno Nanoparticle ◽  
Time Saving ◽  
Nanoparticle Deposition ◽  
Self Cleaning

ZnO nanoparticle-based multifunctional coatings were prepared by a simple, time-saving microwave method. Arginine and ammonia were used as precipitation agents, and zinc acetate dehydrate was used as a zinc precursor. Under the optimized conditions, flower-like morphologies of ZnO aggregates were obtained. The prepared nanopowders were characterized using X-ray powder diffraction (XRD), scanning electron microscopy (SEM), and UV/Visible spectroscopy. The developed in situ synthesis with microwave irradiation enabled significant ZnO nanoparticle deposition on cotton fabrics, without additional steps. The functionalized textiles were tested as a photocatalyst in methylene blue (MB) photodegradation and showed good self-cleaning and UV-blocking properties. The coated cotton fabrics exhibited good antibacterial properties against common microbial trains (Staphylococcus aureus, Escherichia coli, and Candida albicans), together with self-cleaning and photocatalytic efficiency in organic dye degradation. The proposed microwave-assisted in situ synthesis of ZnO nanocoatings on textiles shows high potential as a rapid, efficient, environmentally friendly, and scalable method to fabricate functional fabrics.

scholarly journals Effects of thermal treatments on 10 major phenolics and their antioxidant contributions in Acer truncatum leaves and flowers

2018 ◽  
Vol 5 (6) ◽  
pp. 180364 ◽  
Author(s):  
Lingguang Yang ◽  
Peipei Yin ◽  
Chi-Tang Ho ◽  
Miao Yu ◽  
Liwei Sun ◽  
...  
Keyword(s):  
Liquid Chromatography ◽  
Gallic Acid ◽  
Mass Spectrometer ◽  
High Performance ◽  
Ultra Performance Liquid Chromatography ◽  
Array Detector ◽  
Diode Array ◽  
Thermal Treatments ◽  
Diode Array Detector ◽  
Phenolic Constituents

This study aimed to investigate effects of thermal treatments on major phenolics and their antioxidant contributions in Acer truncatum leaves and flowers (ATL and ATF, respectively). With ultra performance liquid chromatography-diode array detector-quadrupole time-of-flight-mass spectrometer/mass spectrometer, phenolic compositions of ATF were first characterized and compared with those of ATL. An optimized high performance liquid chromatography fingerprint was then established, and 10 major phenolics existing in both ATL and ATF were quantified. Gallic acid derivatives and flavonol-3- O -glycosides were found to be their dominant phenolic constituents, with the former being key constituents which was affected by thermal treatments and further influencing the variations of total phenols. Moreover, the mechanism underlining the changes of phenolics in ATL and ATF by the treatments was characterized as a thermolhydrolysis process. During thermal treatments, polymerized gallotannins were hydrolysed to 1,2,3,4,6-pentakis- O -galloyl-β- d -glucose, ethyl gallate and gallic acid, resulting in more than fivefold and twofold increase of their contents in ATL and ATF, respectively. By contrast, contents and antioxidant contributions of flavonol-3- O -glycosides gradually decreased during the process.\absbreak Overall, this is, to our knowledge, the first report on the effects of thermal treatments on phenolics and their antioxidant contributions in ATL and ATF, and the three gallic acid derivatives with potentially higher bioactivity could be efficiently achieved by thermal treatments.

scholarly journals Efficiency of Polyphenol Extraction from Artificial Honey Using C18 Cartridges and Amberlite® XAD-2 Resin: A Comparative Study

2016 ◽  
Vol 2016 ◽  
pp. 1-6 ◽  
Author(s):  
Chua Yung An ◽  
Md. Murad Hossain ◽  
Fahmida Alam ◽  
Md. Asiful Islam ◽  
Md. Ibrahim Khalil ◽  
...  
Keyword(s):  
Comparative Study ◽  
Gallic Acid ◽  
Vanillic Acid ◽  
High Performance ◽  
Solid Phase ◽  
Array Detector ◽  
Extraction Recovery ◽  
Photodiode Array Detector ◽  
The Mean ◽  
Honey Solution

A comparative study of the extraction efficiency of nine known polyphenols [phenolic acids (benzoic acid, dihydroxybenzoic acid, gallic acid, trans-cinnamic acid, and vanillic acid) and flavonoids (naringenin, naringin, quercetin, and rutin)] was conducted by deliberately adding the polyphenols to an artificial honey solution and performing solid phase extraction (SPE). Two SPE methods were compared: one using Amberlite XAD-2 resin and another one using a C18 cartridge. A gradient high performance liquid chromatography system with an RP18 column and photodiode array detector was utilized to analyze the extracted polyphenols. The mean percent of recovery from the C18 cartridges was 74.2%, while that from the Amberlite XAD-2 resin was 43.7%. The recoveries of vanillic acid, naringin, and rutin were excellent (>90%); however, gallic acid was not obtained when C18 cartridges were used. Additionally, the reusability of Amberlite XAD-2 resin was investigated, revealing that the mean recovery of polyphenols decreased from 43.7% (1st extraction) to 29.3% (3rd extraction). It was concluded that although Amberlite XAD-2 resin yielded a higher number of compounds, C18 cartridges gave a better extraction recovery. The lower recovery seen for the Amberlite XAD-2 resin also cannot be compensated by repeated extractions due to the gradual decrease of extraction recovery when reused.

scholarly journals Determination and Quantification of Gallic Acid in Raw Propolis by High-performance Liquid Chromatography–Diode Array Detector in Burundi

2019 ◽  
Vol 1 (1) ◽  
pp. 43-48
Author(s):  
Ramadhan Nyandwi ◽  
Ayşe S. Kılıç ◽  
Meltem Çelik ◽  
Hasan H. Oruç
Keyword(s):  
High Performance Liquid Chromatography ◽  
Liquid Chromatography ◽  
Phenolic Compounds ◽  
Gallic Acid ◽  
Caffeic Acid ◽  
High Performance ◽  
Array Detector ◽  
Diode Array ◽  
Diode Array Detector ◽  
Sub Saharan

Background: Honey, pollen, and propolis are among the products that bees process and derive from plants and flowers. Propolis is a resinous material that bees gather from the buds and bark of some trees and small plants. Propolis from temperate climates mainly contains phenolic compounds, in contrast with propolis from tropical climates, which mainly contains terpenes. This study aimed to determine, characterise, and quantify the phenolic content of raw propolis from Burundi. Methods: In this study, a total of 6 samples were collected from the provinces of Rumonge, Cibitoke, and Ruyigi in Burundi. Fifteen phenolic compounds (caffeic acid, ferulic acid, epigallocatechin gallate, isoferulic acid, cinnamic acid, caffeic acid phenethyl ester, gallic acid, apigenin, chrysin, galangin, quercetin, kaempherol, rutin trihydrate, naringenin, and pinocembrin) were used as high-performance liquid chromatography (HPLC) standards for qualitative and quantitative analyses of the propolis samples. Results: Among the 15 phenolic compounds checked, only 1 – gallic acid – was detected at a measurable level using an HPLC-diode array detector system. Conclusion: In addition to terpenes, propolis found in sub-Saharan Africa may contain phenolic compounds. Further advanced investigation of sub-Saharan African propolis is required for more detailed characterisation.

Determination of anti-oxidant capacity and content of phenols, phenolic acids, and flavonols in Indian and European gooseberry

2012 ◽  
Vol 66 (4) ◽  
Author(s):  
Anna Filipiak-Szok ◽  
Marzanna Kurzawa ◽  
Edward Szłyk
Keyword(s):  
Chlorogenic Acid ◽  
Gallic Acid ◽  
Phenolic Acids ◽  
High Performance ◽  
Dry Mass ◽  
Coefficient Of Determination ◽  
Array Detector ◽  
Anti Oxidant ◽  
Derivatives Of

AbstractPhenolic acids and derivatives of quercetin in Indian (amla) and European gooseberry were determined by high-performance liquid chromatography with diode array detector. The calibration curves were constructed using phenolic compounds standards (the coefficient of determination (R 2) was 0.9990–0.9997 for phenolic acids and 0.9989–0.9994 for flavonols, respectively). The lowest detection limit was 0.28 mg L−1 and 0.35 mg L−1 for hyperoside and gallic acid, respectively, whereas the highest was 1.80 mg L−1 and 7.98 mg L−1 for quercetin and chlorogenic acid, respectively. The quantification limits calculated were 0.85–24.04 mg L−1 for hyperoside and chlorogenic acid, respectively. The predominant phenolic acid in amla and gooseberry is gallic acid: (5.37 ± 0.04) mg per 100 g of dry mass (d.m.) and (3.21 ± 0.03) mg per 100 g of d.m., respectively. The next one was caffeic acid, 0.65–1.22 mg per 100 g of d.m., followed by p-coumaric acid, 0.84–1.17 mg per 100 g of d.m. Out of the flavonols, rutin is predominant: (3.11 ± 0.13) mg per 100 g of d.m. and (2.12 ± 0.03) mg per 100 g of d.m., respectively. Anti-oxidant activity was also determined.

Determination and Quantification of Gallic Acid in Raw Propolis by High-performance Liquid Chromatography–Diode Array Detector in Burundi

2019 ◽  
Vol 1 (1) ◽  
pp. 43-48
Author(s):  
Ramadhan Nyandwi ◽  
Ayşe S. Kılıç ◽  
Meltem Çelik ◽  
Hasan H. Oruç
Keyword(s):  
High Performance Liquid Chromatography ◽  
Liquid Chromatography ◽  
Phenolic Compounds ◽  
Gallic Acid ◽  
Caffeic Acid ◽  
High Performance ◽  
Array Detector ◽  
Diode Array ◽  
Diode Array Detector ◽  
Sub Saharan

Background: Honey, pollen, and propolis are among the products that bees process and derive from plants and flowers. Propolis is a resinous material that bees gather from the buds and bark of some trees and small plants. Propolis from temperate climates mainly contains phenolic compounds, in contrast with propolis from tropical climates, which mainly contains terpenes. This study aimed to determine, characterise, and quantify the phenolic content of raw propolis from Burundi. Methods: In this study, a total of 6 samples were collected from the provinces of Rumonge, Cibitoke, and Ruyigi in Burundi. Fifteen phenolic compounds (caffeic acid, ferulic acid, epigallocatechin gallate, isoferulic acid, cinnamic acid, caffeic acid phenethyl ester, gallic acid, apigenin, chrysin, galangin, quercetin, kaempherol, rutin trihydrate, naringenin, and pinocembrin) were used as high-performance liquid chromatography (HPLC) standards for qualitative and quantitative analyses of the propolis samples. Results: Among the 15 phenolic compounds checked, only 1 – gallic acid – was detected at a measurable level using an HPLC-diode array detector system. Conclusion: In addition to terpenes, propolis found in sub-Saharan Africa may contain phenolic compounds. Further advanced investigation of sub-Saharan African propolis is required for more detailed characterisation.

scholarly journals Quality Evaluation of the Traditional Medicine Majun Mupakhi ELA via Chromatographic Fingerprinting Coupled with UHPLC-DAD-Quadrupole-Orbitrap-MS and the Antioxidant Activity In Vitro

2018 ◽  
Vol 2018 ◽  
pp. 1-13 ◽  
Author(s):  
Ayinuer Reheman ◽  
Haji Akber Aisa ◽  
Qing Ling Ma ◽  
Dilaram Nijat ◽  
Rahima Abdulla
Keyword(s):  
Antioxidant Activity ◽  
Antioxidant Capacity ◽  
Traditional Medicine ◽  
Gallic Acid ◽  
High Performance ◽  
Radical Scavenging ◽  
Array Detector ◽  
Chemical Fingerprinting ◽  
Orbitrap Ms

By merging a high-performance liquid chromatography diode array detector (HPLC-DAD) method with high-performance thin-layer chromatography (HPTLC), an assay was developed for chemical fingerprinting and quantitative analysis of traditional medicine Majun Mupakhi ELA (MME), and constituent compounds were identified using HPLC coupled with UHPLC-DAD-Quadrupole-Orbitrap-MS method. In addition, the antioxidant capacity of MME was assessed based on the ability of components to scavenge radicals using in vitro method. Using a HPLC-DAD method with HPTLC easily validated the chemical fingerprinting results and quantified three characteristic components, namely, gallic acid (1), daidzein (2), and icariin (3), in commercial MMEs. The three compounds presented excellent regression values (R2=0.9999) in the ranges of the test and the method recovery was in the range from 100.49% to 100.68%. The fingerprints had 27 common characteristic peaks, of which 13 were verified by rapid UHPLC-DAD-Q-Orbitrap-MS analysis. In vitro antioxidant assays rapidly assessed and contrasted antioxidant activity or the free radical scavenging activity of the main polyphenolic classes in MMEs, and the antioxidant capacity was mostly affected by the presence of gallic acid. Thus, this study establishes a powerful and meaningful approach for MME quality control and for assessing in vitro antioxidant activity.

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