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19 articles for “ester group”
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Mechanistic Studies on Aziridinyl-Benzoquinones in Cultured Tumour Cells
Abstract: This study compares the anti-tumour effects of NQO1 activated drug RH1 (2, 5-diaziridinyl-3 - hydoxymethyl-6-methyl-1, 4-benzoquinone) with a lipophilic ester derivative Es5 on the isogenic cell lines MDA 468 and MDA 468 NQO1 which differs only in expression of wtNQO1. A 39- fold enhancement of growth inhibitory activity was seen in NQO1 expressing cells compared the NQO1 null cells for the Es5 compared to the 25- fold increase seen for …
Published in Research and Reviews: A Journal of Pharmacology · Vol. 11, Issue 2, 2023 · pp. 37–45 Read article
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FT-IR Analysis of Single Walled Carbon Nanotubes based PA12/PMMA Nanocomposites
Abstract: Development of new polymer composites for different applications is gaining interest. In this context, the author has synthesized novel blends and its nanocomposites consisting of Polyamide12 (PA12), Poly methyl methacrylate (PMMA), functionalized and non-functionalized carbon nanotubes by using melt extrusion, followed by injection molding technique. To understand molecular interaction among the blend components, these composites, namely PA12/PMMA blend and PA12/PMMA/SWCNT, SWCNT-OH, SWCNT-COOH nanocomposites are characterized by infrared spectroscopic (IR) methods. …
Published in Research & Reviews : Journal of Physics · Vol. 8, Issue 2, 2019 · pp. 75–82 Read article
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Radiation Effects in Acrylonitrile (AN) Ethyl Methacrylate Copolymer by Spectroscopic and Thermal Methods
Abstract: Gamma irradiation effects in acrylonitrile (AN) ethyl methacrylate (EMA) (AE) copolymer have been investigated by electron spin resonance (ESR), Fourier transform infrared (FTIR) and differential scanning calorimetric (DSC) techniques. Temperature and radiation dose dependent effects have been investigated by recording ESR spectra under different conditions. Computer simulation techniques are used to analyze ESR spectra to identify of free radical produced on irradiation of copolymer. As such, ESR spectrum of irradiated …
Published in Journal of Polymer & Composites · Vol. 5, Issue 3, 2017 · pp. 22–29 Read article
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Influence of Aeration on Biomass and Polyhydroxyalkanoate Accumulation in Priestia flexa JP1: A Foundation for Nano-Biomaterial Development
Abstract: Polyhydroxyalkanoates (PHAs) are microbial polymers that have attracted substantial interest in recent times due to their use as biodegradable substitutes for petroleum-derived plastics and also as precursors for nano-enabled biomaterials. The aim of the present work was to evaluate the effect of static and shaking culture conditions on growth kinetics, biomass formation, and PHA synthesis by Priestia flexa JP1. The bacterial strain was cultured in mineral salt media (MSM) at …
Published in Research and Reviews : A Journal of Biotechnology · Vol. 16, Issue 2, 2026 · pp. 42–50 Read article
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Synthesis, Characterization, and Thermogravimetric Analysis of Polylactic Acid-Based Bio-Adhesive for Industrial Applications
Abstract: This study investigated the synthesis, characterization, and thermogravimetric analysis of polylactic acid (PLA)-based bio-adhesives for industrial applications. The adhesive was synthesized using an emulsion polymerization method with varying compositions of PLA and vinyl acetate. The physicochemical, mechanical, and thermal properties of the synthesized adhesives were assessed through pH analysis, viscosity measurement, peel strength evaluation, tack tests, biodegradability investigations, Fourier Transform Infrared Spectroscopy (FTIR), Differential Scanning Calorimetry (DSC), and Thermogravimetric Analysis …
Published in Journal of Materials & Metallurgical Engineering · Vol. 16, Issue 2, 2026 · pp. 42–56 Read article
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Characterization and Gamma Irradiated MA-EMA Copolymer by ESR and FTIR Techniques
Abstract: AbstractGamma irradiation effect of methacrylamide-ethyl methacrylate (MA-EMA) copolymer has been investigated by electron spin resonance (ESR) and Fourier Transform infrared (FTIR) spectroscopic techniques. The ESR spectrum observed for gamma irradiated MA-EMA copolymer has shown resolved hyperfine (hf) pattern at lower temperatures (77K) while at higher temperatures the spectrum is appeared to be broadened. Fourier Transform Infrared spectra of pure and gamma irradiated MA-EMA copolymer have been recorded for the copolymer …
Published in Journal of Polymer & Composites · Vol. 4, Issue 3, 2016 · pp. 40–44 Read article
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Polymer-Based Chemistry of Carbohydrate-Derived Fulvic Acid and Its Comparative Effect with Chelating Agents on Root Dentin Microhardness
Abstract: The interaction between the polymer science and the endodontic biomaterials field has increased recently while considering the search for chelating agents. CHD-FA (Carbohydrate-Derived Fulvic Acid), a naturally occurring low-molecular-weight polymeric organic acid, has potential chelating and antimicrobial and antioxidant activities. This investigation examines the polymeric chemistry of CHD-FA and compares the effect of CHD-FA with other chelating agents, ethylenediaminetetraacetic acid (EDTA), and citric acid, on root dentin microhardness. A total …
Published in Journal of Polymer & Composites · Vol. 14, Issue 2, 2026 · pp. 1051–1061 Read article
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Extraction and Characterization of Pectin from Malabar Tamarind, and Indian Wild Lime
Abstract: Pectin is a versatile heteropolysaccharide that is widely used in the food, pharmaceutical, and biomedical industries because of its gelling, stabilizing, and emulsifying properties. This review discusses the extraction of pectin from agro-waste peels of Malabar tamarind (Garcinia cambogia) and Indian wild lime (Citrus indica) using conventional acid hydrolysis under optimized conditions: pH 1.5–2.0, 85–90°C, and 90 minutes. The process resulted in 22.5% and 27.8% pectin yields, respectively, verified through …
Published in Journal of Polymer & Composites · Vol. 14, Issue 3, 2026 · pp. 472–478 Read article
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Preparation of Methyl Esters of Solid Acids from Litsea Consimilis
Abstract: This study focuses on the extraction and characterization of fatty acids from the seed oil of Litsea consimilis and their subsequent conversion into methyl esters. The oil demonstrated high iodine and Reichert-Meissl values, indicating a significant content of unsaturated and short-chain fatty acids. Glyceride analysis revealed that trilaurin constitutes over 90% of the triglycerides, confirmed through melting point analysis and hydrolysis yielding lauric acid as the sole component. The oil …
Published in Journal of Modern Chemistry & Chemical Technology · Vol. 16, Issue 2, 2025 · pp. 129–134 Read article
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Experimental Investigation On Reactive Distillation Process For Synthesis of iso-amyl acetate
Abstract: Abstract: Reactive Distillation (RD) is a combination of reaction and distillation in a single vessel gives bonuses over conventional sequential approach of reaction followed by distillation or other separation techniques. These processes are better candidates to use it to chemical process industry. These processes proved to offer better selectivity, improved conversion, and superior heat control, operational utilization of reaction heat, choice for problematic separations, huge capital and energy price reductions, …
Published in Emerging Trends in Chemical Engineering · Vol. 6, Issue 1, 2019 · pp. 17–31 Read article
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In vitro Cytotoxicity of 17-Oxo-5-androsten-3β-yl esters against Liver, Neuroblastoma and Colon Cancer Cell Lines
Abstract: A tumor is abnormal growth of body tissue and steroidal derivatives represent a distinct class of antineoplastic agents. Positioning of the oxo group on the parental steroid skeleton has significant effect on the antineoplastic activity profile of the compounds. Recent work from our laboratory has also demonstrated the effectiveness of 17-oxo-5-androsten-3β-yl ester derivatives as potential antiproliferative agents and 5-alpha reductase inhibitors. The current study was undertaken to investigate the cytotoxicity …
Published in Research & Reviews: A Journal of Drug Design & Discovery · Vol. 3, Issue 3, 2016 · pp. 23–27 Read article
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Histochemical Localization of Acid Phosphatase in the Haustoria of Two Stem Parasites Cassytha Filiformis L. (Lauraceae) and Cuscuta Reflexa Roxb. (Cuscutaceae)
Abstract: Abstract Acid phosphatases consist of a group of non-specific enzymes that hydrolyse a variety of organic esters with the liberation of phosphate ions. Sodium α-naphthol phosphate substrate is used to localise acid phosphatase activity. The activity of this enzyme was greatest at the sites of haustorial entry and in the region of the hausorial contact with the host vasculature. The presence of this enzyme at the region of interface indicates …
Published in Research & Reviews : Journal of Botany · Vol. 3, Issue 3, 2014 · pp. 1–4 Read article
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Impacts of Phthalate Plasticisers—An Emerging Issues and Concerns
Abstract: Phthalates or phthalic acid esters are the esters of phthalic anhydride used to increase the flexibility and durability of plastic products including polyvinyl chloride (PVC). Based on the molecular weight, phthalates are grouped into low and high phthalates that shows diverse applications and different mode of toxicity in various animals. The enormous production and widespread applications allow them to exist in all environments including air, water, and soil; in solid, …
Published in Research and Reviews : Journal of Veterinary Science and Technology · Vol. 9, Issue 2-3, 2020 · pp. 14–49 Read article
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Evaluation Of Anti Obesity Activity Of Citrus Sinensis & Citrus Limon By High Fat Diet Induced Model Using Danio Rerio
Abstract: Obesity, defined by the World Health Organization (WHO) as an abnormal or excessive fat accumulation that may impair health, is becoming one of the greatest challenges to global health in this millennium, with more than 300 million men and nearly 450 million women obese globally in 2018. Obesity turns into serious problem globally. Zebrafish model can be used extensively for drug screening due to its low maintenance cost, comparatively short …
Published in Research and Reviews: A Journal of Pharmacology · Vol. 14, Issue 1, 2024 · pp. 24–31 Read article
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Comparative Assessment of Methylparaben concentration in Cosmetic product, analyzed using Enzyme Biosensor and ultra-high-pressure liquid chromatography (UPLC): An approach towards detection of the environmental toxicant with higher accuracy and sensitivity.
Abstract: Methylparaben (MP) is one of the most widely used preservatives and is associated with a catalog of recently identified health hazards. Existing studies have also highlighted these compounds as environmental contaminants and toxicants that affect water quality and the associated microbial diversity of the habitat. The conventional methods for parabens detection is performed using chromatographic techniques, which assist in quantitative analysis of the group of compounds. However, the biggest challenge …
Published in Nano Trends – A Journal of Nano Technology & Its Applications · Vol. 28, Issue 2, 2025 · pp. 17–22 Read article
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Polymer Waste-Derived Activated Carbon from PET for High-Efficiency Supercapacitor Electrodes
Abstract: The exponential increase in plastic waste, particularly Polyethylene Terephthalate (PET)—a polymer characterized by its repeating aromatic terephthalate units and ester linkages—has escalated into a global environmental crisis. This study details a low-cost synthesis of porous carbon materials derived from waste PET via pyrolysis followed by chemical activation with calcium hydroxide (Ca(OH)2). During pyrolysis, the PET polymer chains undergo thermal degradation, where the aromatic rings in the backbone serve as precursors …
Published in Journal of Polymer & Composites · Vol. 14, Issue 2, 2026 · pp. 1419–1447 Read article
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Diglycidyl Ether of Bisphenol A (DGEBA) Based Epoxy Sizing Agent Induces Surface Polarity in Carbon Fibers†
Abstract: Determination of the chemical structure and composition of the sizing agent is a challenge as its concentration is low, varying in the range from ~0.5 wt.% (for polyacrylonitrile, PAN, based carbon fibers) to ~1 wt.% (for pitch-based carbon fibers). Moreover, such a piece of knowledge is vital for designing compatible polymer matrices to prepare CFRPs for diverse applications. As a result, the sizing layer that is coated on the carbon …
Published in International Journal of Crystalline Materials · Vol. 1, Issue 2, 2024 · pp. 24–34 Read article
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Analysis of Genetic Basis for Morphological Variations in Normal and Tissue Cultured Plants of Andrographis paniculata in Association with or Without Arbuscular Mycorrhizal Fungi using AFLP Markers
Abstract: Andrographis paniculata Nees, a member of Acanthaceae, is one of the important medicinal herbs. The active principle, Andrographolide esters has a paramount importance in pharmaceutics. Morphological variants have been reported both in natural populations collected from various geographical areas and micropropagated plants raised through tissue culture that need to be analyzed with proper molecular tools. In order to facilitate reasoned scientific decisions on its management, conservation and prepare for a …
Published in Research & Reviews : Journal of Botany · Vol. 8, Issue 1, 2019 · pp. 1–11 Read article
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Angioedema-Diagnosis & Management
Abstract: Angioedema (AE) encompasses a diverse range of conditions categorized into three main groups: (1) angioedema mediated by histamine (AE-H); (2) angioedema mediated by bradykinin (AE-BK); and (3) angioedema with an unknown mechanism (AE-UNK). It can manifest on any part of the body, though commonly affected areas include the face, lips, mouth, throat, larynx, extremities, genital regions, and gastrointestinal tract. AE-H can occur by itself or in conjunction with chronic urticaria, …
Published in Research and Reviews : A Journal of Immunology · Vol. 14, Issue 2, 2024 · pp. 9–21 Read article