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731 articles for “extraction methods”
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An Overview of the Performance of Eco-friendly Polymers for Improving Oil Recovery from Existing Oil Fields
Abstract: The demand for fossil fuels especially crude oil as well as its price is increasing day by day and have led to the search for newer methods and techniques for oil extraction worldwide and these are collectively known as enhanced oil recovery methods. This paper reviews the present status of the different types of organic and inorganic cross-linked polymers used by the Oil Industry for increasing the oil production. The …
Published in Journal of Petroleum Engineering & Technology · Vol. 1, Issue 1-3, 2011 · pp. 1–15 Read article
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In vitro Antibacterial Activity of Averrhoa carambola Leaf Extracts
Abstract: The aim of the present study was to determine the phytochemical constituents and antimicrobial potential of Averrhoa carambola leaf extracts against three gram-positive bacteria (Bacillus subtilis, Staphylococcus aureus and Streptococcus mutans) and three gram-negative bacteria (Klebsiella pneumoniae, Proteus vulgaris and Pseudomonas aeruginosa) which are some of the infectious bacteria. The A.carambola leaves were extracted in three different solvents of increasing polarities (hexane, ethyl acetate, and acetone). The phytochemical analysis showed …
Published in Research and Reviews : A Journal of Biotechnology · Vol. 8, Issue 2, 2018 · pp. 27–32 Read article
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Maximum Power Point Tracking Using PSO with Boost Converter
Abstract: Maximum power point tracking methods are used for extraction of maximum power from solar PV panels. The characteristics of non-line panel hinder the power output from the solar panel. Earlier proposed methods like hill climbing, incremental conductance suffer from steady state and lower efficiency. This proposed evolutionary computation technique assures nearly zero steady state oscillation and faster convergence of tracking maximum power. The PSO algorithm is tested on a DC-DC …
Published in Journal of Alternate Energy Sources & Technologies · Vol. 7, Issue 2, 2016 · pp. 17–27 Read article
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Comparative Study of Structural, Optical, Morphological, and Magnetic Properties of BifeO3 Nanoparticles Synthesized Via Green and Chemical Methods
Abstract: BiFeO3 nanoparticles were synthesized via a green route using Strychnos nux-vomica leaf extract and a conventional chemical sol–gel method to study the effect of synthesis routes on their properties. XRD analysis confirmed phase-pure rhombohedral BiFeO3 for both samples. FTIR analysis was carried out to confirm the formation of the perovskite structure and to detect surface functional groups. FESEM analysis indicated a significant effect of phytochemicals in controlling particle growth and …
Published in Journal of Nanoscience, NanoEngineering & Applications · Vol. 16, Issue 1, 2026 · pp. 1–8 Read article
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Carica papaya Assisted Biosynthesis of Silver Nanoparticles with Antimicrobial Activity
Abstract: Nanoparticles are used immensely due to its small size, orientation, physical properties, which are reportedly shown to change the performance of any other material which is in contact with these tiny particles. These particles can be prepared easily by different chemical, physical, and biological approaches. But the biological approach is the most emerging approach of preparation, because, this method is easier than the other methods, ecofriendly and less time consuming. …
Published in Research and Reviews : A Journal of Biotechnology · Vol. 5, Issue 2, 2015 · pp. 1–3 Read article
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Comparison between Methanolic and Ethanolic Extract of Calendula offcinalis (Antimicrobial agent) against Gram-Positive and Gram-Negative Bacteria
Abstract: The aim of the present study was to determine the antimicrobial study of methanolic and ethanolic extracts of marigold/zendu (Marathi) (Calendula officinalis linn.) petals against gram-positive and gram-negative pathogens. The antimicrobial study of C. officinalis extracts has been evaluated by disc diffusion method against number of bacteria and methanolic extract of C. officinalis exhibited better antibacterial activity against most of the bacteria tested, than ethanolic extract. Both methanol and ethanol …
Published in Research and Reviews : A Journal of Biotechnology · Vol. 8, Issue 3, 2018 · pp. 22–25 Read article
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Anti-hyperglycaemic Effect of Psidium guajava Extracts in Diabetes Mellitus: Systematic Review and Meta-analysis
Abstract: Introduction: Psidium guajava belonging to family Myrtaceae is traditionally used plant for the treatment of diabetes in many countries of the world. This systematic review was designed to determine level of evidence of on the anti-hyperglycaemic effect of Psidium guajava extracts from experimental trials. Methods: An electronic literature search from the database inception was performed since December 2014 with specified terms and defined outcome. We included only experimental study designs …
Published in Research and Reviews : Journal of Computational Biology · Vol. 8, Issue 1, 2019 · pp. 26–33 Read article
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Phytochemical Screening and Trace Element Analysis of Cryptomeria japonica
Abstract: The present study was aimed to investigate the preliminary phytochemical screening of the bark of Cryptomeria japonica belonging to family Cupressaceae. The bark of the plant were subjected to successive soxhlet extraction by continuous hot percolation method using organic solvents of increasing polarity such as ethanol. Both the extracts were subjected to qualitative phytochemical screening and it showed the presence of active constituents such as alkaloid, flavonoid, phenol and carbohydrates. …
Published in Research and Reviews : A Journal of Biotechnology · Vol. 4, Issue 2, 2014 · pp. 17–20 Read article
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Isolation, Characterization of Rhinacanthus Nasutus L. Kurz and Its Biological Evaluation
Abstract: The present paper deals with isolation, characterization and evaluation of anti-inflammatory, analgesic and anti-bacterial activities of n-hexane extract of Rhinacanthus nasutus L. Kurz. Extraction was carried out with soxhlet apparatus using solvents of increasing polarity. The anti-inflammatory activity was done by Carrageenan-Induced Paw Edema in rats. Analgesic activity was done by hot plate method and anti-bacterial activity by plate hole diffusion method. n-Hexane extract exhibited significant change in anti-inflammatory, analgesic …
Published in Research and Reviews: A Journal of Pharmacology · Vol. 3, Issue 1, 2013 · pp. 9–15 Read article
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Extraction, Stability, and Application of Natural Dye from Spathodea campanulata Flower: A Study on Shelf Life, Yield, and Fabric Dyeing Potential
Abstract: The growing demand for sustainable and eco-friendly alternatives to synthetic dyes has led to increased interest in natural dye sources. Spathodea campanulata, commonly known as the African Tulip Tree, is a potential source of natural dye due to its vibrant floral pigments. This study focuses on the extraction, yield, stability, and application of the dye obtained from Spathodea campanulata flowers. The dye was extracted using an aqueous method, and its …
Published in Research & Reviews : Journal of Botany · Vol. 14, Issue 3, 2025 · pp. 8–15 Read article
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Isolation, Phytochemical Investigation and Biological Screening of Roots of Cosmos Sulphureus
Abstract: Aims and objectives: The plants are integral part of traditional system of medicine. Cosmos is one such medicinal plant traditionally being used in Brazil and Mexico for treatment of several diseases. The present study is aimed to evaluate the properties of Cosmos sulphureus and its preliminary phytochemical screening, extraction, purification and identification of active components.Materials and Methods:All roots were handpicked and washed with tap water. Cleaned roots were air dried …
Published in Research & Reviews: A Journal of Pharmacognosy · Vol. 10, Issue 1, 2023 · pp. 1–9 Read article
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Empirical Relation to Predict Essential Oil Yield in Conventional Distillation System
Abstract: Peppermint is medicinal herb, and its extracts (essential oils) are of great importance because they are used in pharmaceutical, food, and cosmetic items. Moreover, peppermint oil is also used as anticancer, anti-bacterial, anti-viral, spasmodic, anti-diabetic, ulcer healing, anti-obesity, etc. Steam distillation method is used to extract essential oil from peppermint. Boiler, extraction unit, condenser and Florentine flask are the main components of steam distillation system. The objective of present study …
Published in Journal of Polymer & Composites · Vol. 11, Issue 14, 2023 Read article
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Evaluation for Analgesic and Antipyretic Activities of Celosia argentea
Abstract: In the present study, we have evaluated different extracts of Celosia argentea seeds for analgesic and antipyretic activities using different models of pain and rectal temperature. The analgesic activity of Celosia argentea was carried out using eddy’s hot plate method in mice. The antipyretic activity was carried out using yeast induced pyrexia in rats. The three different extracts (Ext I: Pet ether, Ext II: Ethanol, Ext III: Aqueous) of Celosia …
Published in Research and Reviews: A Journal of Pharmacology · Vol. 8, Issue 1, 2018 · pp. 31–34 Read article
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Maximum Power Point Tracking of a Variable Speed Permanent Magnet Synchronous Generator Based Wind Energy Conversion System
Abstract: Wind turbines produce maximum power at the optimal tip-speed ratio. Fixed speed wind turbines are inefficient because the turbine blades rotate at a specific mechanical speed irrespective of the prevailing wind speed. The system is therefore, not able to extract the maximum possible amount of power. In this work, a maximum power point tracking scheme for a variable-speed permanent magnet synchronous generator based wind energy conversion system is implemented in …
Published in Journal of Power Electronics and Power Systems · Vol. 5, Issue 3, 2015 · pp. 35–51 Read article
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Survey of Techniques for Clustering and Classification of ECG using WEKA
Abstract: ECG analysis can be done for automatic detection of abnormality in cardiac activity. This can be helpful in generating alert for saving a precious life. Various techniques have been proposed in literature for feature detection and classification such as; fuzzy logic methods, artificial neural networks (ANN), and support vector machines (SVM), wavelet transform, Hilbert transform, etc. Recently, numerous researches and techniques have been developed for analyzing the ECG signal on …
Published in Journal of Microcontroller Engineering and Applications · Vol. 3, Issue 2, 2016 · pp. 14–19 Read article
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In vitro Antioxidant Activity of Calotropis Procera
Abstract: Antioxidant activity of root of Calotropis procera extract was evaluated in a series of in vitro assay involving free radicals. IC50 values were determined. Extracts of I. coccinea exhibited scavenging effect in concentration dependent manner in all in vitro method. IC50 of ethyl acetate extract was 48.43, 75.811 and 60.60 μg/ml for 2,2-diphenylpicrylhydrazyl radical scavenging, hydrogen peroxide scavenging, and nitric oxide scavenging, respectively. Ethyl acetate extract shows good in vitro …
Published in Research and Reviews: A Journal of Pharmacology · Vol. 4, Issue 2, 2014 · pp. 11–14 Read article
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Development of Herbal Mosquitoes repellent candle
Abstract: Citronella oil and essential oil are commonly used for their insect-repellent properties. They’re important for creating natural insect repellents, candles, and sprays, offering a safer alternative to chemical-based products. Citronella oil is particularly effective against mosquitoes, making it invaluable for outdoor activities and protecting against insect-borne diseases like malaria and Zika virus. Its pleasant scent also adds to its appeal as a natural air freshener. In a mosquito repellent study, …
Published in Recent Trends in Cosmetics · Vol. 1, Issue 2, 2024 · pp. 8–12 Read article
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Biosynthesis, Characterization and Non-toxic Activity of Gold Nanoparticles using Geranium (Pelargonium graveolens L.) Leaf Extract
Abstract: Nanoparticles from various materials can be prepared by relatively simple methods. During the past few decades, a variety of different methods have been reported and reviewed for synthesizing gold colloids of monodisperse and uniform sized particles. In present investigation, a new method of one-pot biosynthesizing of gold nanoparticles (GNPs), using geranium leaves extract as a reductant and stabilizer is reported. GNPs were characterized by UV-visible spectroscopy; transmission electron microscopy, X-ray …
Published in Nano Trends – A Journal of Nano Technology & Its Applications · Vol. 16, Issue 3, 2014 · pp. 1–7 Read article
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A Comprehensive Review on the Miniaturized Analytical Techniques for Sustainable Pharmaceutical Testing
Abstract: Miniaturized analytical techniques are revolutionizing pharmaceutical testing by offering sustainable and efficient alternatives to traditional methods. These techniques are designed to reduce sample and reagent consumption, minimize waste generation, and accelerate analysis, aligning perfectly with the principles of green analytical chemistry. This comprehensive review aims to thoroughly explore the landscape of miniaturized analytical techniques, specifically highlighting their profound impact on fostering sustainable practices within the pharmaceutical sector. The review systematically …
Published in Research and Reviews: A Journal of Pharmaceutical Science · Vol. 17, Issue 1, 2026 · pp. 18–39 Read article
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Deposition of Antimony Trioxide on the Composite Surface to Increase Its Flame Retardancy
Abstract: In the present work, the preparation method of antimony trioxide and its thermal properties were extracted, as well as identified the manufacturing method to form an insulation layer from this oxide as a thickness of the covering layer (2 mm), deposited on the composite material consisting of unsaturated polyester resin and glass fiber which acts as a paste and take for the material to the insulation and flame retardant oxide. …
Published in Journal of Thin Films, Coating Science Technology & Application · Vol. 2, Issue 1, 2015 · pp. 1–3 Read article