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458 articles for “concentration”
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Eco-Friendly Corrosion Inhibition of Aluminum Alloys with Acacia nilotica in Acidic Media
Abstract: Gravimetric analysis was used to examine the corrosion inhibitory effects of Acacia nilotica extract in 0.5 N H2SO4 on aluminum alloy at different concentrations and at 303 K. At a corrosion inhibitor concentration 0.45% at 303 K, the inhibition efficiency is found to be remarkably high (52.25%). Results show that the extract's capacity to inhibit was caused by its adsorption onto the metal surface via the Langmuir adsorption process. For …
Published in International Journal of Metallurgy and Alloys · Vol. 10, Issue 1, 2024 · pp. 31–37 Read article
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Studies on Extraction, Modelling and Purification of Quercetin from Peel of Allium cepa
Abstract: ABSTRACT Quercetin is an anti-oxidant, which very efficiently scavenges highly reactive biological species such as peroxynitrite and hydroxyl radical. Quercetin belongs to the flavonoid’s family. The present studies on optimization of physico-chemical parameters like effects of different solvents, different solvent percentages, particle size, pH and extraction time for the extraction of quercetin was studied. The highest quercetin concentration for optimized conditions was 38 µg/ml. In the soxhlet extraction process, the …
Published in International Journal of Plant Biotechnology · Vol. 4, Issue 1, 2018 · pp. 3–11 Read article
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In Vitro Callus Induction of White Pumpkin (Cucurbita moschata Duch.) ‘Casperita’ (F1 Hybrid) through Difference Explants
Abstract: White pumpkin (Cucurbita moschata Duch.) ‘Casperita’ (F1 Hybrid) is a popular pumpkin in many countries, however, it produces unfertile seeds. The current study determined the appropriated concentrations of 2,4-D (2,4-dichlorophenoxy acetic acid) and BAP (6-Benzylaminopurine) on callus induction using various explants as hypocotyl, epicotyl, cotyledons, petiole, and leaf. Sterilized explants were cultured on MS media with various concentrations of 2,4-D (0 and 2 mg/L) and BAP (0, 0.1, 0.3 and …
Published in International Journal of Plant Biotechnology · Vol. 5, Issue 2, 2019 · pp. 15–21 Read article
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Antioxidant, Anti-inflammatory and Anti-proliferative potential of Amaranthus viridis and Swertia chirata
Abstract: AbstractMedical plants have been used to treat various chronic disease from ancient times. The development of science and technology in recent time makes it possible to discover the active constituents present in these plants and establish their biological targets for evolving them as a remedy for treating diseases. The aim of this study was to determine the phytochemical constituents and antioxidant potential of methanolic extracts of Amaranthus viridis and Swertia …
Published in International Journal of Plant Biotechnology · Vol. 7, Issue 1, 2021 · pp. 16–25 Read article
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Studies on Extraction and Purification of Rutin from Ethanolic Extract of Manilkara zapota leaves
Abstract: Manilkara zapota (sapodilla) is belongs to sapotaceae family. This plant contains various nutrition values. The fruit of sapota is rich with many antioxidants, the leaf of this beneficial plant is also very useful, which helps in improving the condition of digestive tract by prevention of disease like gastritis,enteritis. As sapota is also rich with vitamin C and antioxidants which also boosts immunnity of the body and lowers the risk of …
Published in International Journal of Plant Biotechnology · Vol. 8, Issue 2, 2022 · pp. 1–5 Read article
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In-vitro plant regeneration of Mulberry (Morus alba L.)
Abstract: The present investigation entitled “In-vitro plant regeneration of Mulberry (Morus alba L.)” was conducted at Plant Tissue Culture Laboratory of K. K. Wagh College of Agricultural Biotechnology, Nashik, Maharashtra, India. Development of improved protocols for the regeneration of Morus alba L. is important for their commercial utilization. The present study was initiated to optimize in-vitro propagation protocol from nodal culture of Mulberry. Three surface sterilization treatment were used, the nodal …
Published in International Journal of Plant Biotechnology · Vol. 9, Issue 1, 2023 · pp. 24–38 Read article
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Studies on Extraction and Purification of Total Phenolic Content from Seeds of Carica papaya
Abstract: Carica papaya is belongs to Caricaceae family and it contains high content of phenolic compounds and medicinal properties. It shows various pharmacological activities like anti-oxidant, anti-cancer, anti-diabetic, anti-inflammatory, wound healing activities. Here in this research work, for the extraction of TPC from seeds of Carica papaya, the optimum results were observed for the effects of different solvents, solvent percentages, pH, extraction time and particle size for the extraction of TPC …
Published in International Journal of Industrial Biotechnology and Biomaterials · Vol. 6, Issue 2, 2020 · pp. 39–43 Read article
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Studies on TPC and TTC analysis from Syzygium cumini seeds through extraction and fermentation
Abstract: Syzygium cumini is the scientific name for the Java plum, a kind of medicinal plant. The plant can be found all over the plains of India, all the way to its southernmost point. This plant contains phenolic compounds, tannins, glucoside, myrecetin, ellagic acid, anthocyanins, kaemferol, and isoquercetin among other phytochemicals. It shows various pharmacological activities like Anti- inflammatory activity, Anti- Oxidant activity, Anti-microbial activity, Hepatoprotective activity and Anti Ulcer/colitis activities …
Published in International Journal of Industrial Biotechnology and Biomaterials · Vol. 8, Issue 2, 2022 · pp. 6–10 Read article
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Studies on Interaction of SDS with HPMC Using Central Composite Design
Abstract: The conductivity measurements were used to study the interaction between non-ionic biopolymers, hydroxypropyl methyl cellulose (HPMC) and the anionic surfactant- sodium dodecyl sulphate (SDS) in aqueous solutions of different concentrations and at temperatures along with the use of Response Surface Methodology (RSM). Calculations were made of the free energies of aggregation ΔGagg, micellization (Gmic), and transfer (Gt), all of which are connected to the bonding interaction between the surfactant and …
Published in International Journal of Green Chemistry · Vol. 8, Issue 2, 2022 · pp. 20–33 Read article
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Response Surface Methodology in the Optimization of Biodiesel Production from Palm Kernel Oil and Cellobiose by Acid Catalysis in Non-solvent Medium
Abstract: Cellobiose, rich in hydroxyl (OH) functional groups was used in a solventless transesterification process with Palm Kernel Oil (PKO) to produce high-quality biodiesel and glycerol. Response Surface Methodology (RSM) was used to examine the effect of reaction temperature, catalyst concentration, reaction time, and cellobiose: oil ratio to optimize the process parameters for highpurity and yield of consequent biodiesel. The process was an acid-catalyzed transesterification reacton of Palm Kernel Oil and …
Published in International Journal of Green Chemistry · Vol. 9, Issue 1, 2023 · pp. 1–22 Read article
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A Simplified High-Performance Liquid Chromatographic Method For Determination of Vitamin D3 in Human Serum
Abstract: Diabetes is a metabolic disorder caused by defective insulin secretion, insulin action or both. The two major factors for the development of diabetes are pancreatic beta cell dysfunction and insulin resistance. In type 2 diabetes mellitus, production and release of insulin is unobstructed but due to factors like ageing or obesity, the produced insulin cannot compensate for the increased demand. Measurement of the serum level of 25-hydroxyvitamin D3 is the …
Published in International Journal of Analytical and Applied Chemistry · Vol. 3, Issue 1, 2017 · pp. 9–13 Read article
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PROPERTIES OF AN ALGERIAN DATE SYRUP ICE CREAM
Abstract: - This present work aimed to develop an ice cream with an Algerian date syrup with a view to enriching antioxidants and to substitute the sugar present in high concentration (70%). First, the physicochemical parameters of the date syrup as well as its composition of antioxidants (total phenolic compounds, flavonoids, tannins) were studied and the antioxidant and antiradical activities were evaluated. Second, date syrup was incorporated in ice cream at …
Published in International Journal of Analytical and Applied Chemistry · Vol. 6, Issue 1, 2020 · pp. 46–53 Read article
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Hydrogenation of dimethyl-nitrobenzene to dimethyl-aniline in a three-phase Reactor
Abstract: The liquid-phase catalytic hydrogenation of dimethyl-nitrobenzene (DN) to Dimethyl-aniline (DA) was carried out in ethanol using 5% Pd/C as a catalyst. The effects of hydrogen partial pressure (400–1000 kPa), reaction temperature (343–403 ), catalyst loading (5–15 g/lit), speed of stirring range (200-800 rpm) and dimethyl-nitrobenzene concentration (0.12–0.75 mol/lit) on the hydrogenation of dimethyl-nitrobenzene and the yield of Dimethyl-aniline have been studied. Dimethyl-aniline was the only reaction product, generated through the …
Published in International Journal of Chemical Separation Technology · Vol. 3, Issue 2, 2017 · pp. 1–13 Read article
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Extraction and Purification of Kaempferol from leaves of Azadirichta indica
Abstract: Azadirachta indica, commonly known as neem, It contains phytochemical compounds like phenolic compounds, flavonoids (Quercetin and kaempferol), tannins, gallic acid, nimbosterol, catechin, nimbine, etc. It shows many pharmacological activities like anti-oxidant, anti-cancer, anti-diabetic, anti-inflammatory activities etc. For the extraction of kaempferol from neem leaves, the optimum results were observed for the effects of different solvents, different solvent percentages, particle size, pH and extraction time for the extraction of kaempferol were …
Published in International Journal of Chemical Separation Technology · Vol. 5, Issue 2, 2019 · pp. 26–30 Read article
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Electrolytic Degradation of Uric Acid Using Nickel Electrodes in an Unpartitioned and Partitioned Batch Cell
Abstract: Electrolytic degradation of an aqueous solution of uric acid (UA) was performed in an unpartitioned and partitioned electrolytic tank using nickel electrodes. The concentration of uric acid was measured using a UV–Visible spectrophotometer, and the effect of operating parameters such as voltage, concentration of uric acid and the supporting electrolyte were investigated. It is found that the concentration of uric acid decreases with time in both the unpartitioned and partitioned …
Published in International Journal of Chemical Engineering and Processing · Vol. 2, Issue 1, 2016 · pp. 1–10 Read article
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Catalytic hydrogenation of dimethyl-nitrobenzene to dimethyl-aniline over Ni catalysts
Abstract: The catalytic transfer hydrogenation of dimethyl-nitrobenzene (DN) to Dimethyl-aniline (DA) was studied in the temperature range 343–403 , pressure range of 4–10 bar H2 and ethanol as solvent using Ni on alumina-silicate as catalyst above agitation speed 800 rpm. The substrate feed concentration was varied in the range from 0.124 to 0.745 kmol/m3 while catalyst loading was in the range 4–12% (w/w) of dimethyl-nitrobenzene. Dimethyl-aniline was the only reaction product, …
Published in International Journal of Chemical Engineering and Processing · Vol. 3, Issue 2, 2017 · pp. 19–29 Read article
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Chemical Resistance of Coconut Shell-Filled Rubber Vulcanizates
Abstract: In this contribution, the uptake of water, methanol, acetone and toluene at ambient temperature by Coconut Shell-Filled Rubber Vulcanizates as a function of time were studied. The rubber vulcanizate with varying Coconut Shell filler (CSF) concentration of 10 to 50 pphr at 10 pphr interval was prepared using two roll mixing mill and compression moulding process. The effect of filler loading on the percentage uptake of different chemicals (water, methane, …
Published in International Journal of Chemical Engineering and Processing · Vol. 7, Issue 2, 2021 · pp. 37–42 Read article
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Studies on the Effect of Coal Mining on the Water Quality Parameters of Lilagar River Passing Through Dipika Coal Field Area
Abstract: Lilagar river is a perennial water resource which is the biggest tributary of river Mahanadi in Chhattisgarh Lilagar river originates from Urta village near Pali in Korba district. The river flows through forest land, cropland and density populated rural areas. Mining of coal also causes pollution. Coal mine water is acidic in nature and dissolves the toxic elements like Cd, Pb and Al. water from river, pond and other sources …
Published in International Journal of Environmental Chemistry · Vol. 1, Issue 2, 2015 · pp. 1–3 Read article
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Fluoride Distribution and Related Health Problems
Abstract: Fluoride is one of the very few chemicals that cause significant effects in people depending upon their concentration. Although present naturally in soil, water and air, fluoride consumption occurs largely through water. Fluoride intake at low concentration is known to cause beneficial effects on teeth, however at high concentrations; it may give rise to a number of adverse effects. These range from mild dental fluorosis to crippling skeletal fluorosis as …
Published in International Journal of Environmental Chemistry · Vol. 1, Issue 2, 2015 · pp. 9–12 Read article
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TRACE METALS IN SURFACE WATER AND SEDIMENTS OF LOWER NEW CALABAR RIVER, RIVERS STATE, NIGERIA
Abstract: The concentration of trace metals in surface water and sediments of lower New Calabar River was investigated. The results obtained showed that the trace metals Pb, Cd, Fe, Zn, Co and Cu occurred in both surface water and sediments. There was high distribution of the trace metals according to the sample locations attributed to both anthropogenic and natural resources. The concentration of trace metals in surface water followed the trend …
Published in International Journal of Environmental Chemistry · Vol. 6, Issue 2, 2020 · pp. 39–52 Read article