TiO 2 /SiO 2 nanofluids as novel inhibitors for the stability of asphaltene particles in crude oil: Mechanistic understanding, screening, modeling, and optimization

Biocompatible protic ionic liquids-based microwave-assisted liquid-solid extraction of astaxanthin from Haematococcus pluvialis

Antiproliferative activity of ionic liquid-graviola fruit extract against human breast cancer (MCF-7) cell lines using flow cytometry techniques.

In this work, the onset of asphaltene flocculation for an Iranian crude oil by titration of samples with heptane in the presence and absence of the TiO2/SiO2 nanofluids was obtained by Near-IR spectroscopy. Nanoparticles and nanocomposites were characterized by BET, FESEM, EDX, XRD, and XRF analysis. Modeling and optimization of inhibition of asphaltene flocculation process by TiO2/SiO2 nanofluids were conducted by response surface methodology (RSM). Under optimum conditions (nanocomposite composition = 0.04 wt% (80%TiO2:20%SiO2), salinity = 4.01 wt%, and pH = 3.42), the onset point increased. For nanofluids stability analysis, the optimum nanofluid was compared with the two other nanofluids (SiO2 and TiO2) by visual observation method. The results indicated that high stability and surface area of the 80%TiO2 nanocomposites increase asphaltene adsorption on the particles surface that subsequently increases the onset point. In addition, the optimum nanofluid performance on the carbonate rocks was e...

Application of response surface methodology for optimization of the stability of asphaltene particles in crude oil by TiO2/SiO2 nanofluids under static and dynamic conditions

Study on the synthesis of dual-chain ionic liquids and their application in the extraction of flavonoids.

Optimization of ionic liquid-based microwave assisted extraction of a diterpenoid lactone-andrographolide from Andrographis paniculata by response surface methodology

Andrographis paniculata is an important medicinal plant belonging to family Acanthaceae and has been used from ancient times. Andrographis paniculata is used as a traditional herbal medicine in Unani, Ayurvedic, Homeopathic, and Siddha system. It has potential to treat multiple health diseases like abortifacient, antithrombotic, expectorant, hepatoprotective and other uses also. The major marker chemical constituent found is andrographolide (2.39%) which had many therapeutic uses. Dominancy of the herbal drug depend’s on the quantity and quality of therapeutic chemical constituents present in it, which are investigated by using advanced and complex techniques. HPTLC is the advanced and sophisticated technique that can be used for the high-resolution chromatography and identify quality and quantity of therapeutic chemical constituents present in herbal drugs. HPTLC can determine the purity, quality, quantity and authenticity of the herbal crude drugs and marketed formulations very quickly. This article summarised all the relevant information regarding Andrographis paniculata and its marketed formulations was collected from various research articles, review articles and availability of Andrographis paniculata formulations in the market. Availability of various Andrographis paniculata formulations from the market were identified and reported. Literature review on quantification and qualification of marker compound Andrographolide from the Andrographis paniculata by HPTLC method with various samples of formulations and whole plant from different locations of India was also done.

/pdf/a-review-on-high-performance-thin-layer-chromatography-20hxvuom.pdf

A Review on High Performance Thin Layer Chromatography Methods and Validation Parameters for Quantification of Andrographolide from Andrographis paniculata and its Marketed Formulations

Medicinal herbs are active in curing various disorders by their distinct characteristics. In this research, antioxidant and acetylcholinesterase (AChEI) inhibitory activity of Achyranthes aspera, Psidium guajava, Anthocephalus cadamba, Carissa carandas, Caesalpinia bonduc, Indian medicinal plants have been evaluated by collecting and extracting selected plants parts by using different solvents followed by assessment of AChEI inhibitory activity by autographic assay (TLC method) and microplate assay (Ellman method). Further assessment of antioxidant activity of selected plants by 2, 2-diphenyl-1-picrylhydryzyl method was done. In autographic assay, C. bonduc had more AChE inhibitory potential than other selected plants. In microplate assay method, C. bonduc has shown lowest IC50 value among all other extracts, suggesting its highest enzymatic inhibitory potential and C. carandas has been shown highest IC50 value, suggesting a lower enzymatic inhibitory potential. The Rf value of C. bonduc, A. aspera, P. guajava, A. cadamba, and C. carandas was found to be 0.71, 0.5, 0.3, 0.45 and 0.2, respectively. From the results, leaves of P. guajava showed good antioxidant potential and C. bonduc seeds showed maximum cholinesterase inhibitory activity.

To Evaluate In Vitro Acetylcholinesterase Inhibitory Activity of Various Indian Medicinal Plants

A Novel Approach towards Green Extraction for Glycyrrhitinic Acid by Ionic Liquid Based Microwave Assisted Extraction and Optimization through Response Surface Methodology

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Papers

Optimization of ionic liquid-based microwave assisted extraction of a diterpenoid lactone-andrographolide from Andrographis paniculata by response surface methodology

A Review on High Performance Thin Layer Chromatography Methods and Validation Parameters for Quantification of Andrographolide from Andrographis paniculata and its Marketed Formulations

To Evaluate In Vitro Acetylcholinesterase Inhibitory Activity of Various Indian Medicinal Plants

A Novel Approach towards Green Extraction for Glycyrrhitinic Acid by Ionic Liquid Based Microwave Assisted Extraction and Optimization through Response Surface Methodology