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1
Hörner, Thomas G., and Peter Klüfers. "The Species of Fehling's Solution." European Journal of Inorganic Chemistry 2016, no. 12 (2016): 1798–807. http://dx.doi.org/10.1002/ejic.201600168.
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Meng, Wei, Hongfang Ye, Shuai Liu, Feng Xu, and Weijian Xu. "Emergence of complex chiral coordination clusters {CuII48Na12} by using multiple ligands under oxidizing conditions." Dalton Transactions 48, no. 10 (2019): 3204–8. http://dx.doi.org/10.1039/c9dt00209j.
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Albrecht, Sandra, and Peter Klüfers. "The Structural Chemistry of Text-Book Species: the Tartrato-Cuprates in Fehling's Solution." Zeitschrift für anorganische und allgemeine Chemie 639, no. 2 (2013): 280–84. http://dx.doi.org/10.1002/zaac.201200458.
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Ramesh, C., M. HariPrasad, and V. Ragunathan. "Antibacterial Behaviour of Cu2O Nanoparticles Against Escherichia coli; Reactivity of Fehling's Solution on Manihot esculenta Leaf Extract." Current Nanoscience 7, no. 5 (2011): 770–75. http://dx.doi.org/10.2174/157341311797483763.
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Pratista, Eka, Gunawan Gunawan, and Didik Setiyo Widodo. "Preparation of thin layer CuO from Cu2O using the Spin Coating Method at Various Annealing Temperature and Number of Dripping for Photoelectrochemical Water Splitting." Jurnal Kimia Sains dan Aplikasi 23, no. 11 (2020): 390–95. http://dx.doi.org/10.14710/jksa.23.11.390-395.
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A thin layer preparation of CuO from Cu2O powder using Fehling's solution for photoelectrochemical applications has been performed. The research was focused on studying the effect of annealing temperature and the number of drops on the performance of CuO thin layer semiconductors from Cu2O powder prepared by spin coating with a rotation rate of 500 rpm for 15 seconds. The thin layers were treated with annealing with temperature variations of 300°C, 400°C, and 500°C for 1 hour and variations in the number of drops of 10, 20, and 50 drops. The CuO thin layer was tested in a photoelectrochemical process as a photocathode to split water with a simulated light of 1.5 AM (100 mW/cm2). The process of splitting water as a method of producing hydrogen energy by photoelectrochemistry is assisted by semiconductors, such as CuO, in an electrolyte solution to capture photons and drive the water-splitting reactions. Copper (II) Oxide (CuO) is a p-type semiconductor with a band gap of 1.2-2.5 eV, which can be used as a photocathode. The optimum photoelectrochemical measurement results were obtained at an annealing temperature of 400°C and 50 drops with a current density of 0.584 mA/cm2 at a potential of 0.2 V versus the Reversible Hydrogen Electrode (RHE). The results of the Scanning Electron Microscopy (SEM) analysis show that the morphology of the oxide is spherical. Energy dispersive X-ray (EDX) analysis displays that the sample contained 51.46% and 48.54% of Cu and O, respectively. The X-ray diffraction pattern (XRD) analysis shows that the oxide grain size is 44.137 nm.
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Bunu, Samuel J., Joy O. Okei, Oyeintonbara Miediegha, Benjamin U. Ebeshi, and Ogechukwu L. Chukwuemerie. "Assessment of Secondary Metabolites and Thin-Layer Chromatographic Analysis of Carica papaya (Caricaceae) Leaves Ethanolic Extract." Journal of Pharmaceutical Research International 35, no. 36 (2023): 21–28. http://dx.doi.org/10.9734/jpri/2023/v35i367489.
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Carica papaya, also referred to as pawpaw, is a tropical fruit-bearing tree in the Caricaceae family. Papaya is one of the world's most extensively grown crops. Its fruits, seeds, and leaves are widely utilized in cooking and traditional medicine. Papaya leaf extract, tea, and juices are extensively used to cure ailments and promote health. The study aimed to quantify the presence of potential chemical compounds in Carica papaya leaves using Thin-Layer Chromatographic analysis (TLC). Standard qualitative phytochemical tests were performed on the leaves of C. papaya to determine the presence of various phytochemicals, and TLC analysis to ascertain the presence of potential chemical constituents. Extract of Carica papaya leaves in ethanol showed the presence of tannins, alkaloids, glycosides steroids, proteins, flavonoids, carbohydrates, etc., after the phytochemical screening, all of which are useful chemical ingredients responsible for a variety of pharmacological effects. The lack of color change noticed when the heated sample was treated with Fehling's solution revealed the absence of reducing sugar. TLC analysis using several solvent systems revealed the presence of potential chemical constituents with varying Rf values. This variance in the Rf values showed the phytochemicals and potential chemical constituents' polarity and this gave a hint on the type of solvent systems suitable for the analysis and separation of pure components. Hence, Carica papaya leaf extract contains a high concentration of both primary and secondary plant metabolites. TLC profiling yielded a good result, suggesting the existence of numerous possible chemical ingredients in the plant leaves used for the analysis.
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Momot, Tetyana, Iryna Dakhym, Svitlana Marchyshyn, and Lyudmila Slobodyaniuk. "Study of the carbohydrate composition in the underground organs of the couch grass." Annals of Mechnikov Institute, no. 1 (March 19, 2024): 27–31. https://doi.org/10.5281/zenodo.10838646.
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<strong>Introduction. </strong>Today in Ukraine there is a tendency to expand scientific research on the study of medicinal plants. According to the literature, plants are a source of primary and secondary metabolites that have a wide spectrum of pharmacological and therapeutic effects [1-5]. One of the plants, the use of which is recommended for the prevention of various diseases, is couch grass (<em>Agropyron repens</em> L.). <em>Agropyron repens</em> is a perennial herbaceous plant with a strong rhizome. Couch grass is common in Europe and Asia, and is also found in Africa. The plant is traditionally used as a mild diuretic and pain reliever for diseases of the urinary tract (cystitis, urethritis, prostatitis). It is known that couch grass also exhibits hypoglycemic, hypolipidemic and anti-inflammatory effects. Couch grass contains carbohydrates, mucous substances, pectin, phenolic compounds, flavonoids, saponins, phytoncides, essential oil (0.01-0.02%), vanillin, vanillin glycoside (vanilloside), phenolic acids and silicic acid. It is known that the underground organs of the plant accumulate substances of primary synthesis - carbohydrates. The study of the quantitative content and qualitative composition of carbohydrates of rhizomes and roots of couch grass is expedient due to the fact that these compounds, in addition to important functional value and specific pharmacological activity, also affect the development of the total pharmacological effect of drugs obtained from plant raw materials [6]. <strong>The aim of research.</strong> To determine the qualitative composition and quantitative content of the component composition of carbohydrates in the subterranean organs of couch grass. <strong>Materials and methods. </strong>The objects of study were rhizomes and roots of couch grass, which were harvested in the territory of the Rivne region in 2022. To carry out qualitative reactions on polysaccharides (PS), aqueous extracts from medicinal plant raw materials were prepared. 30 g of crushed dry raw materials were poured with 250 ml of hot purified water and infused for a day. The water extracts were filtered, and the raw materials were poured with 100 ml of hot purified water. The operation was repeated 3-5 times. The aqueous extracts were combined and evaporated to 15 ml. The resulting extract was used to detect PS. 30 ml of 95% ethanol was added to 10 ml of the extract. The appearance of floating lamellar clots that precipitated during settling indicated the presence of PS in the studied raw material. The sediment was filtered and a reaction was carried out to detect reducing (neutral) sugars. The sediment was transferred to a test tube and 5 ml of diluted hydrochloric acid was added and boiled for 30 min. 10 ml of Fehling's reagent was added to the cooled hydrolyzate and boiled again. The appearance of a brick-red sediment indicated the presence of renewable sugars [7-8]. The quantitative content of water-soluble polysaccharides (WSP) and pectin substances (PS) in the studied raw materials was determined by the gravimetric method [9-10]. The qualitative composition and quantitative content of monosaccharides and sucrose were investigated by gas chromatography-mass spectrometry (GC/MS). The method is based on the extraction of free monosugars and the preparation of acetates of their aldonitrile derivatives with further analysis by GC/MS [11]. Chromatographic separation was performed on an Agilent 6890N/5973inert gas chromatography-mass spectrometric system (Agilent Technologies, USA). A HP‑5ms capillary column (30 m×0.25 mm×0.25 mkm, Agilent Technologies, USA) was used. Identification was carried out by the retention time of monosaccharide standards and using the NIST 02 mass spectrum library. Sample preparation of plant raw materials consisted in the extraction of total and free sugars under different conditions. Quantitative analysis was performed by adding a solution of the internal standard to the tested samples. Sorbitol solution was used as an internal standard [12]. <strong>Results and discussion. </strong>The research results confirmed the presence of polysaccharides in water extracts from underground organs of <em>Agropyron repens</em> L.: – with 95% ethanol, the appearance of lamellar clots was observed, which settled down over time; - with Fehling's reagent, after acid hydrolysis, the appearance of a brick-red precipitate was noted, which indicated the presence of neutral (reducing) sugars. The polysaccharide complexes of rhizomes and roots of couch grass were studied and the quantitative content of water-soluble polysaccharides and pectin substances was determined. The obtained water-soluble polysaccharides are light brown amorphous powders that dissolve in water (the pH of aqueous solutions was in the range of 5–6). Polysaccharides give a positive result in the precipitation reaction with 96% ethanol and Fehling's reagent after acid hydrolysis. The obtained pectin substances are brown amorphous powders that dissolve in purified water to form colloidal viscous cloudy solutions, the pH of which is 4–5. Aqueous solutions of PS are precipitated with a 1% solution of aluminum sulfate with the formation of pectates. The results of the research indicate that in rhizomes and roots of couch grass, the content of PS is (6.57±0.02) %, and the content of WSP is (5.85±0.02) %. The presence and quantitative content of 8 monosugars after acid hydrolysis was determined in the composition of the polysaccharide complexes of rhizomes and roots of couch grass; 4 free sugars were found - glucose, fructose, inositol and disaccharide sucrose. Among the monosaccharides in the studied raw material, xylose, which was formed after acid hydrolysis, dominated; its highest content was observed in the underground organs of couch grass (39.03 mg/g). Also, the predominant glucose content was observed after acid hydrolysis (27.30 mg/g), and in the free state its content in the rhizomes and roots of the plant was 3.42 mg/g. The content of sucrose in the studied object was 2.14 mg/g. In addition to glucose, the presence of inositol was observed in the composition of free sugars and sugars after acid hydrolysis - 0.37 mg/g and 1.47 mg/g, respectively. <strong>Conclusions. </strong>The analysis of the results of the conducted research indicates a high content of water-soluble polysaccharides and pectin substances in the rhizomes and roots of couch grass. The composition of sugars of the subterranean organs of the plant is characterized by the predominance in the quantitative ratio of the monosugar xylose and the disugar sucrose. The studied species is promising for use in medical practice and requires extensive phytochemical and pharmacological analysis.
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K Bhavya Sri, Md. Saba Fatima, M Nandhini, and M Sumakanth. "UV-visible spectrophotometry and titrimetric method for determining Reducing Sugars in different brands of honey and soft drinks." Magna Scientia Advanced Research and Reviews 7, no. 2 (2023): 062–67. http://dx.doi.org/10.30574/msarr.2023.7.2.0037.
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Two simple, easy, and rapid methods were developed for the determination of glucose reducing sugar in various soft drink samples and total reducing sugars in honey sample. A colorimetric method was developed to analyze the soft drink samples (non-diet and not dark colored) and titrimetric method was developed to determine the total reducing sugars in honey sample. The various soft drink samples obtained from market were analyzed for the glucose content in them using UV-Visible spectrophotometry and DNSA solution. The DNSA imparts color to the sucrose standard and samples and later the absorbance values were checked at 580 nm. The calibration curve of the standard sucrose solution was plotted and the concentration of the samples were determined using the calibration curve. The titrimetric method is based on the principle of Lane Eynon method for determination of reducing sugars and it involves two steps: standardization of invert sugar and titration of honey solution using Fehling’s A and B solutions. There were no titrimetric methods available in literature for determination of total reducing sugars with use of simple reagents. Hence the proposed methods were developed which are rapid, and reliable.
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Sánchez-Viesca Francisco and Gómez Rein. "The chemistry of Crismer’s test for glucose in urine." Open Access Research Journal of Chemistry and Pharmacy 1, no. 2 (2021): 005–8. http://dx.doi.org/10.53022/oarjcp.2021.1.2.0028.
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The study of what is going on in a chemical test is important, the more if the involved substance is glucose in urine. In the Crismer’s test the blood-red colour of safranin solution in alkaline medium is discharged if the glucose concentration is higher than 100 mg/dl. The reagent is not affected by uric acid or creatinine as is the case with the Fehling solution. The safranin test detects sugar in saliva when other reagents failed. Since the reaction mechanism of this test has not been advanced, we provide the electron flow, step by step.
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Vu, Huong Thi Lan, Oanh Thi Kim Nguyen, Van Thi Thu Bui, et al. "Isolation of dihydroxyacetone-producing acetic acid bacteria in Vietnam." Science and Technology Development Journal 19, no. 4 (2016): 31–38. http://dx.doi.org/10.32508/stdj.v19i4.625.
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Sixty-six acetic acid bacteria (AAB) were isolated from fourty-five flowers and fruits collected in Hochiminh City, Vietnam. Of the sixty-six, thirty-one isolates were selected as dihydroxyacetone (DHA)-producing AAB based on the reaction with Fehling’s solution and grouped into three groups by routine identification with phenotypic features. Group I composed of fourteen isolates and was assigned to the genus Acetobacter, Group II composed of thirteen isolates and was assigned to the genus Gluconobacter and Group III was the remaining four isolates and was assigned to the genus Gluconacetobacter. Ten isolates among the thirteen isolates of Group II gave a larger amount of DHA (22.2–26.0 mg/mL) than Gluconobacter oxydans NBRC 14819T (19.8 mg/mL), promising for the potential use in producing DHA. In phylogenetic analysis based on 16S rRNA gene sequences, six isolates of the ten potential DHA producers were suggested to be candidates for new taxa in the genus Gluconobacter.
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Asthana, Sonal, Chanchal Samanta, Ravi Kumar Voolapalli, and Basudeb Saha. "Direct conversion of syngas to DME: synthesis of new Cu-based hybrid catalysts using Fehling’s solution, elimination of the calcination step." Journal of Materials Chemistry A 5, no. 6 (2017): 2649–63. http://dx.doi.org/10.1039/c6ta09038a.
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Zhu, Zi Ping, and Na Li. "Physical, Chemical and Structural Analysis of Phellinus Igniarius Polysaccharides." Advanced Materials Research 236-238 (May 2011): 1983–86. http://dx.doi.org/10.4028/www.scientific.net/amr.236-238.1983.
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This paper studied the physical, chemical properties and structure of phellinus igniarius polysaccharides (PIPS). PIPS is negative on iodine potassium iodide solution test, positive on a-naphthol reaction, and negative on Fehling reagent test. Viscosity of exopolysaccharide (EPS) and intracellular polysaccharides (IPS) at 25 °C was 0.85 dL/g and 1.20 dL/g respectively. Column chromatography analysis separated 8 constituents from IPS, while 2 constituents were separated from EPS. The monosaccharide compositions of some of these constituents were further investigated. Results from gel permeation chromatography showed that IPS had 9 constituents and EPS had 4 constituents. The molecular weights of the constituents were determined.
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Nanos, Christos G., Constantina N. Konidari, and Miltiades I. Karayannis. "Potentiometric study of the nucleation of Cu2O after its formation from fehling solutions and reducing sugars." Electroanalysis 3, no. 6 (1991): 577–83. http://dx.doi.org/10.1002/elan.1140030620.
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Akrokeokia, P. Bagshaw, JK Ideriah Tubonimi, and G. Onyekachi Chinonso. "Determination of Glucose Concentrations and Acidity in Selected Soft Drinks Marketed in Port Harcourt Nigeria." Chemistry Research Journal 1, no. 4 (2016): 100–104. https://doi.org/10.5281/zenodo.13992114.
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Selected soft drinks were screened for glucose concentrations and pH using Fehling solution and pH meter by Extech. The results showed that the glucose concentrations ranged between 8.39g/l and 48.95g/l. The study showed the presence of glucose in all the soft drinks. The soft drinks were found to be acidic in nature with pH ranging from 2.50 to 3.26. These results suggest that soft drinks contribute to major public health problems such as diabetes, atherosclerosis, acidogenic and cariogenic potential that result in dental caries and potential enamel erosion. Thus, quality control during the production process especially at the stages of sterilization and purification as well as adding clean alkaline water to soft drinks before use and total avoidance were recommended.
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Ratulangi, Wulan Ratia, and Rosnalia Widyan. "Uji Kualitatif dan Organoleptik Kandungan Formalin pada Hasil Laut yang Dikeringkan Berupa Ikan Teri, Cumi, dan Rebon dari Pasar Pagesangan." JSN : Jurnal Sains Natural 2, no. 1 (2024): 1–4. http://dx.doi.org/10.35746/jsn.v2i1.453.
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Food additives are often found in every processed food product. However, it is not uncommon for business actors to use prohibited food additives in the form of formaldehyde which is used as a preservative in plywood, foam and so on, but is used to preserve food in the form of dried seafood. Dried sea products in the form of anchovies, squid and rebon itself are one of the foodstuffs that are popular with the public and processed into delicious local food. This research aims to carry out qualitative and organoleptic tests for the formaldehyde content of dried marine products in the form of anchovies, squid and rebon obtained from several traders at Pagesangan Market, Mataram City, West Nusa Tenggara. Sampling was carried out using random sampling technique. The formalin qualitative test on salted fish samples was carried out by adding 1 ml of Fehling A and Fehling B. A positive test was indicated by the color of the blue solution changing to green and the presence of a brick red precipitate. Apart from that, it is also supported by the results of organoleptic tests which include color, aroma, shape or texture. The total number of samples tested was 15 samples obtained from several different traders, where 7 samples were positive for formalin. This can be seen from the physical characteristics of anchovies, squid and rebon with a bright white and fresh color, the odorless aroma of marine products preserved in salt, and the shape or texture is smoother, more intact and does not break easily compared to the sample. negative for formalin.
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Caldas, Lhaís A., Patricia D. Santos, Elaine R. Carbonero, et al. "Immunomodulatory Effect of Polysaccharides from the Mushroom-Forming Basidiomycete Gymnopilus imperialis (Agaricomycetes, Basidiomycota)." Pharmaceuticals 15, no. 10 (2022): 1179. http://dx.doi.org/10.3390/ph15101179.
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Gymnopilus consists of a widely distributed genus of basidiomycetes, especially in tropical regions of the world, such as Japan, Australia, Paraguay, and Brazil. This genus biosynthesizes interesting bioactive compounds, such as sesquiterpenoids, oligoisoprenoids, styrylpyrones, and lectins. In the present study, the aqueous extract of the basidiomata of Gymnopilus imperialis (Basidiomycota, Agaricomycetes, Agaricales, Hymenogastraceae) was obtained by using the accelerated solvent extraction (ASE) technique, followed by the precipitation of polysaccharide fraction with ethanol. Further purification by freeze-thawing processes, Fehling solution precipitation, and membrane dialysis with different pore sizes yield three main polysaccharide fractions (Gi-MRSW, Gi-PFME, and Gi-SFME). According to monosaccharide composition and 13C-NMR data, the Gi-MRSW and Gi-SFME fractions showed to be composed mainly of β-glucans and Gi-PFME by a heterogalactan. Moreover, the immunomodulatory potential of Gi-MRSW was evaluated using RAW 264.7 murine macrophage as a study model. The nitric oxide production was significantly increased in treated samples, and the expression of inducible nitric oxide synthase (iNOS) showed that the fraction Gi-MRSW from G. imperialis induces the M1 polarization phenotype.
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Nur Manik, Md Imran, Md Hazrat Ali, Md Monirul Islam, et al. "In Vitro Antioxidant, Cytotoxic, Thrombolytic Activities and Phytochemical Evaluation of Methanol Extract of the Ampelocissus Barbata (Wall.) Leaves." Biomedical and Pharmacology Journal 15, no. 2 (2022): 911–23. http://dx.doi.org/10.13005/bpj/2426.
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Context: Oxidative stress and pertaining counterbalance mechanism are actively working in the living organisms. The overproduction of reactive oxygen species (ROS) in the ongoing equipoising process requires to be compensated by strong antioxidants. Plants as a rich source of antioxidants not only reduce oxidative stress but also possess cytotoxic, thrombolytic and phytochemical potentials. Aims: To find out the antioxidant, cytotoxic, thrombolytic and phytochemical capabilities of the methanolic extracts of Ampelocissus barbata (Wall.) leaves. Methods and Material: Assessment of the in vitro antioxidant activity of extract was carried out using DPPH radical scavenging assay, determination of reducing power capacity and total phenolic content. The thrombolytic activity was assessed by disintegration of clot and prospective phytochemical activities were by standard qualitative analysis such as Mayer’s, Dragendroff’s Wagner’s and Hager’s Reagent test for alkaloids; Libermann-Burchared and Salkowski Reagent tests for steroid and terpenoids; Molish Reagent, Benedict’s Reagent, Fehling’s Solution A & B reagent test for carbohydrates; Ferric Chloride (5%) Solution, Potassium Dichromate (10%) Solution tests for tannins; Shinoda test and Alkaline reagent test for Flavonoids; Froth tests & Haemolysis test for Saponins. Statistical analysis used: The statistical analysis was carried out using GraphPad Prism and Microsoft excel Results: Appreciable DPPH radical scavenging activity of the extract was observed with the IC50 value of 107.47±1.46 µg/ml. A significant correlation was found between the standard ascorbic acid (AA) and the plant extracts at the p˂0.05 for the reducing power assay where, the activity increased with the concentration of the extracts and the highest absorbance value was 3.025±0.15 and 1.826±0.006 for the AA and the extracts respectively. The plant also accommodates a considerable amount of polyphenols, reflected in the value of gallic acid equivalent 277.397±0.419 mg/ml. Finally, the percentage (%) of clot lysis for the thrombolytic activity was revealed to be 7.031±0.697, 35.297±1.307, and 75.083±0.599 for the water (negative control), extract, and the standard Streptokinase respectively. The study revealed the presence of phytochemicals namely alkaloids, flavonoids, tannins and glycosides. Conclusions: The study disclosed the promising in vitro activity of the plant, which necessitates the further analysis for the isolation and evaluation of the active principles.
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Konwar, Manashjyoti, Abdul Aziz Ali, Mitali Chetia, Prakash J. Saikia, and Diganta Sarma. "Fehling solution/DIPEA/hydrazine: an alternative catalytic medium for regioselective synthesis of 1,4-disubstituted-1H-1,2,3-triazoles using azide–alkyne cycloaddition reaction." Tetrahedron Letters 57, no. 40 (2016): 4473–76. http://dx.doi.org/10.1016/j.tetlet.2016.08.068.
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Nur Aini, Siska, and Crescentiana Emy Dhurhania. "ANALISIS KADAR VITAMIN C PADA KUBIS MERAH (Brassica oleracea L. var capitata) YANG DIBUAT JUS DENGAN VARIASI LAMA PENYIMPANAN." Jurnal Ilmiah Ibnu Sina (JIIS): Ilmu Farmasi dan Kesehatan 6, no. 2 (2021): 215–22. http://dx.doi.org/10.36387/jiis.v6i2.699.
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Vitamin C is an antioxidant that is contained in red cabbage (Brassica oleracea L. var capitata). Generally, people store juice ingredients in the refrigerator. This research was carried out to determine the effect of storage time on vitamin C levels in juiced red cabbage. The variation of storage time used was 1, 4, and 7 days with a storage temperature of 5 oC. Qualitative test using iodine, Fehling, and ammonium molybdate reagent gave positive results containing vitamin C. The quantitative test was carried out by UV-Vis spectrophotometry at a maximum wavelength of 570.5 nm with operating time at 20 minutes after the test solution was added with H2SO4 and ammonium molybdate. The quantitative test results showed that the level of vitamin C on the first day was 63.92 mg / 100 g, on the fourth day was 63.32 mg / 100 g, on the seventh day was 62.52 mg / 100 g red cabbage with coefficients of variation 0.26%. The Tukey test resulted in a p value of more than ??0.05, ie 0.831, so that the levels of vitamin C red cabbage juice made on the 1st, 4th, and 7th days were not significantly different.
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Purim, Yu B., M. L. Kruglyakova, L. N. Bulanova, et al. "A METHODOLOGICAL APPROACH TO DESIGNING EXPERIMENTS WHEN DEALING WITH IDENTIFICATION TESTS FOR MEDICINAL PRODUCT COMPONENTS (AS ILLUSTRATED BY ASCORBIC ACID)." Bulletin of the Scientific Centre for Expert Evaluation of Medicinal Products 8, no. 3 (2018): 193–200. http://dx.doi.org/10.30895/1991-2919-2018-8-3-193-200.
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The need for identification testing of active substances or excipients in multi-component medicinal products, including the use of qualitative tests, calls for research substantiating the choice of tests and test conditions with due regard to interference effects caused by other components of medicinal products and the amount of the sample used. The aim of the study was to develop a methodological approach to designing experiments while selecting qualitative reactions for identification testing of a medicinal product component based on the results of studies investigating the possibility of using known qualitative tests (as illustrated by ascorbic acid in a multi-component product — 0.4 mg of ascorbic acid per 100 mg of the vial contents) with due regard to interference on the part of other medicinal product components and the amount of the sample used. Material and methods: the study focused on a multi-component medicinal product — lyophilisate for solution for intravenous and intramuscular injections containing an antiinflammatory active substance and ascorbic acid as a stabilizing agent (antioxidant). The analysis of literature sources helped to determine qualitative tests that were assessed for potential use for identification testing of ascorbic acid as a component of the analysed medicinal product. The study involved experimental testing of the qualitative reactions based on acidic and reducing properties of ascorbic acid. Results: it was demonstrated that several well-known qualitative tests could be used for identification testing of ascorbic acid as a component of the analysed medicinal product, namely, the reaction of ferrous ascorbate formation and the reaction of silver nitrate reduction to metallic silver after preliminary separation of ascorbic acid from the other medicinal product components, as well as the reaction of Prussian blue formation, iodine test and reaction with a potassium permanganate solution, which do not require additional sample preparation. It is not practicable to use the reaction with a methylene blue solution and the Fehling’s reagent reaction for this particular medicinal product, since their results are feeble. Conclusions: the analysis of the multi-component medicinal product helped to develop a methodological approach to choosing qualitative reactions for identification testing of one of the medicinal product’s components (e.g., ascorbic acid). The suggested algorithm includes the choice of reactions, determination of their sensitivity and applicability for a particular medicinal product, analysis of the other components’ effects on the results of the chemical reaction, and the need for additional sample preparation. The whole complex of the studies performed helped to determine qualitative reactions and optimal conditions for identification testing of the analysed substance.
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Woranovicz, S. M., P. A. J. Gorin, M. P. Marcelli, G. Torri, and M. Iacomini*. "Structural Studies on the Galactomannans of Lichens of the Genus Cladonia." Lichenologist 29, no. 5 (1997): 471–81. http://dx.doi.org/10.1006/lich.1997.0097.
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AbstractGalactomannans were isolated from Cladonia signata, C. furcata, C. imperialis, and C. clathrata via successive alkaline extraction and precipitation with Fehling solution and Cetavlon. They were investigated using ⊃13C-NMR spectroscopy, methylation analysis, and Smith degradation, and their specific rotations and monosaccharide compositions determined. As with galactomannans of other Cladonia species, they contained (l →6)-linked main chains of α-mannopyranose, which were non-substituted (structure 4 in Fig. 2), monosubstituted at O-2 with α-mannopyranose (structure 6) or α-galactopyranose (structure 1), O-4 with β-galactopyranose (structure 2), and disubstituted at O-2 and O-4 with α-mannopyranosyl and β-galactopyranosyl units, respectively (structure 5). Disubstitution was present to a greater extent in the galactomannans of C. clathrata and C. imperialis than in those of C. signata and C. furcata. In the case of the galactomannans of C. furcata, C. clathrata, and C. imperialis, substitution also occurred at O-2 with O-β-galactofuranosyl-(l→6)-O-α-mannopyranosyl units (structure 7). As observed in previous investigations, the C-l portion of the ⊃13C-NMR of mannose-containing polysaccharides is typical of the lichen species. However, those of galactomannans of C. imperialis and C. clathrata are almost identical and, although other chemical data showed many structures in common, some differences were evident.
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Dēķena, Dzintra, Jānis Lepsis, Ina Alsiņa, Līga Lepse, and Kersti Kahu. "Influence of Plum Rootstock on Flowering Intensity Depending on Concentration of Dry Matter and Reducing Sugars in Annual Shoots." Proceedings of the Latvian Academy of Sciences. Section B. Natural, Exact, and Applied Sciences. 73, no. 3 (2019): 257–62. http://dx.doi.org/10.2478/prolas-2019-0041.
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Abstract The issue of the influence of rootstock on winter-hardiness of plum (Prunus × rossica Erem.) tree flower buds in the Baltic region is becoming important. The choice of rootstock is the main precondition for obtaining a high yielding and sustainable plum orchard. Freezing of flower buds is one of the most significant damages in winter for stone fruits. The aim of the investigation was to determine the relationship between concentration of dry matter and reducing sugars in annual shoots during winter and wintering ability of trees. The dynamics of reducing sugar concentration in one-year-old shoots during winter was investigated during two successive seasons in two locations. Orchards were planted in 2001 in Latvia and in Estonia. The well-known plum cultivar ‘Kubanskaya Kometa’ (Prunus rossica Erem.) was grafted on eight clonal rootstocks (‘St. Julien A’, ‘Brompton’, ‘Ackermann’, ‘Pixy’, GF8/1, G5/22, GF655/2, and ‘Hamyra’) and eight generative propagated rootstocks (‘St. Julien INRA 2’, ‘St. Julien d’Orleans’, ‘St. Julien Noir’, ‘Brompton’, ‘Wangenheims Zwetsche’, ‘St. Julien Wädenswill’, ‘Myrobalan’ and Prunus cerasifera var. divaricate). Shoot samples were harvested two times during winter — at the end of January and at the end of March. Dry matter concentration (mg·g−1) and the concentration of reducing sugars (mg·g−1 DM) by Fehling’s solution method was determined. Tree flowering intensity was scored using a scale from 1 to 5, where 1 = no flowers and 5 = abundant flowering. Dry matter concentration in plum shoots varied among rootstocks, years and growing location. In Pūre, Latvia, the largest differences in dry matter concentration were found for trees grafted on ‘St. Julien INRA2’ (in 2011–2012) and ‘Brompton’ cuttings (in 2012–2013) but in Polli, Estonia for trees grafted on G5/22 (in 2011–2012) and ‘Myrobalan’ (in 2012–2013). One of the most stable rootstock/graft combinations in the trial when GF655/2 was used as rootstock, where dry matter concentration was between 491 and 525 mg·g−1, and reducing sugars between 37.5–49.2 mg·g−1, and flowering intensity between 2.5 and 4.
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Shahid, Muhammad, Azam Ali, Nageena Zahid, et al. "Copper-Treated Environmentally Friendly Antipathogenic Cotton Fabric with Modified Reactive Blue 4 Dye to Improve Its Antibacterial and Aesthetic Properties." Coatings 13, no. 1 (2023): 133. http://dx.doi.org/10.3390/coatings13010133.
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The objectives of the present study were to develop an environmentally friendly, low-price, easy, and fast method for developing antipathogenic (antibacterial, antifungal, and antiviral) cuprous-oxide-coated multifunctional fabrics. The fabrics were first sensitized with citric acid, and then Cu2O particles were formed using the Fehling solution method. The cuprous oxide particles were then applied to the cotton fabrics. To create the Cu2O particles, three different kinds of reducing agents with varying concentrations were used. SEM, dynamic light scattering, FTIR, EDS, and XRD were used to examine the surface morphologies and metal presences. In the second step, a reactive antibacterial dye was made (by reacting Reactive Blue 4 with triclosan). The molecular structure of the modified dye was confirmed with FTIR. The resultant antibacterial dye was applied on the copper-treated cotton fabrics in accordance with the exhaust dyeing protocol. The dyed fabrics were characterized through the colorimetric data (L*, a*, b*, C, H, and K/S), levelness of dye, fastness properties as well as exhaustion and fixation rates. Cuprous-oxide-coated fabrics were tested for antipathogenic activity using quantitative and qualitative measurement results. The fabrics treated with cuprous oxide particles reduced with sodium hydrosulfite at 1 g/L seemed to have the highest antipathogenic effect. Moreover, the versatility of the hygienically developed bioactive fabrics in terms of their comfort properties such as air permeability and stiffness were investigated. Finally, the coating’s durability was confirmed by evaluating its antibacterial properties and performing an SEM analysis after laundry.
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Fitriani Sammulia, Suci, Tirsa Poluan, and Yunisa Friscia Yusri. "Analisis Kualitatif Kandungan Formalin Pada Tahu di Pasar Jodoh Kota Batam." Jurnal Endurance 5, no. 1 (2020): 144. http://dx.doi.org/10.22216/jen.v5i1.4585.
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<p><em>Tofu is a food made from fermented soybean seed precipitate. Storage knows when more than 1-2 days, tofu will be acidic and rotten. A relatively short shelf life that often added formalin preservatives to know can last up to seven days. Formalin is one harmful substance that is forbidden to use for food because it can cause health problems especially in the gastrointestinal tract and if accumulated in the body can be a carcinogen compound. The purpose of this research is to know the existence of formalin on the tofu sold in the Jodoh market Batam city. Sampling is performed in purposive sampling, taking 20 different tofu samples. The active test was done by solution solution A and B and the solution of the reagent Nash. The results of the Weaver show that out of 20 samples that have been tested negatively or do not contain formalin, so that it can be said that circulating in Batam City Jodoh market is safe For consumption.</em></p><p><em><br /></em></p><p><em><em>Tahu merupakan makanan yang terbuat dari endapan perasan biji kedelai yang difermentasi. Penyimpanan tahu bila lebih dari 1-2 hari, tahu akan menjadi asam dan busuk. Daya simpan tahu yang relatif singkat sehingga sering ditambahkan bahan pengawet formalin agar tahu dapat bertahan sampai tujuh hari. Bahan pangan yang banyak mengandung kadar air dapat mudah busuk dan tidak tahan lama terhadap penyimpanan sehingga sangat rentan untuk ditambahakan zat kimia berbahaya seperti formalin. Formalin merupakan salah satu zat berbahaya yang dilarang penggunaanya untuk makanan karena dapat menyebabkan gangguan kesehatan khususnya pada saluran pencernaan dan jika terakumulasi dalam tubuh dapat menjadi senyawa karsinogen.Tujuan penelitian ini untuk mengetahui adanya formalin pada tahu yang di jual di Pasar Jodoh Kota Batam. Pengambilan sampel dilakukan secara purposive sampling, dengan mengambil 20 sampel tahu yang berrbeda. Penelitian ini dilakukan secara analisis deskriptif kualitatif dengan menggunakan larutan pereaksi formalin ( fehling A dan B dan Larutan pereaksi Nash) terhadap 20 sampel tahu yang diperoleh di Pasar Jodoh.Hasil penenlitian menunjukkan bahwa dari 20 sampel yang telah diuji negatif atau tidak mengandung formalin, sehingga dapat dikatakan tahu yang beredar di Pasar Jodoh Kota Batam aman untuk di konsumsi</em></em></p>
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Zhang, Yun, and Qiming Chen. "Improving measurement of reducing sugar content in carbonated beverages using Fehling’s reagent." Journal of Emerging Investigators, 2020. http://dx.doi.org/10.59720/20-009.
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Growing dietary sugar intake has been associated with the increasing global prevalence of obesity and diabetes. As a result, several health organizations recommend reduction in daily sugar. In the sugar industry, the Fehling’s method is still the most commonly used for determining the reducing sugars in sugar products. However, it is difficult to control the experimental conditions and determine the terminal point of titration by color change. Therefore, this investigation explored the optimal concentrations of the constituents and reaction temperature of Fehling’s reaction and determined the reducing sugar content of three best-selling beverages in China using the optimal method. The results showed that the optimal concentrations of Fehling’s reagent are: solution A: 0.075 mol/L copper sulfate; solution B: 0.075 mol/L potassium sodium tartrate, and 1.5 mol/L sodium hydroxide. The optimal temperature for the reaction is 75 oC. The content of reducing sugar in the three beverages, Maidong, Xiaoming tongxue, and Coco milk tea determined by the improved Fehling’s reagent is 1.801 g/100 ml, 5.483 g/100 ml, and 9.956 g/100 ml, respectively. The improvement of Fehling’s reagent might enhance the accuracy and efficiency for reducing sugar test. The high content of reducing sugar in these best-selling beverages may allow consumers to better understand the nutritional content of their favorite drinks and may help them decrease their sugar intake.
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Salim, Ilham, and Frans P. Kafiar. "PEMBUATAN BAHAN DAN PELATIHAN IDENTIFIKASI FORMALIN SERTA BORAKS DALAM MAKANAN DENGAN METODE SEDERHANA BAGI SEKELOMPOK MASYARAKAT YANG BERASAL DARI BEBERAPA KABUPATEN DI PAPUA." JURNAL PENGABDIAN PAPUA 3, no. 1 (2019). http://dx.doi.org/10.31957/.v3i1.923.
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The use of formalin and borax as food preservatives is prohibited by the government, because this material is toxic (poison).However, some survey results indicate that several types of food ingredients in traditional markets and other food traders still contain formalin and borax. Therefore, it is necessary to introduce to the general public how to identify formalin and borax use simple materials and tools. Qualitative test of formalin content in food was used fehling A and fehling B solution. While the qualitative test of borax content was used in turmeric which was prepared in the form of tumeric paper. Activities between speakers and trainees were held face-to-face and the practice of identifying food ingredients containing both formalin and borax were carried out directly in the laboratory. From the results of the activities that had been carried out, it can be concluded that although the ingredients for identification of formalin and borax in food ingredients obtained from simple ingredients, cheap and easy to obtain such as fehling A and fehling B and turmeric in the form of tumeric paper, but they can identify food ingredients contains formalin and borax. Fehling A and Fehling B solutions can identify qualitatively with significant results between that contain and not contain formalin. Similarly, tumeric paper can identify qualitatively with significant results between that contain and not contain borax in food ingredients. Participants were very motivated to apply the results of this activity to the community where they live especially after seeing the results of qualitative tests using fish purchased at the Hamadi traditional market during this service. Qualitative test results using fehling A and B solutions identified red snapper purchased at the traditional Hamadi market using preservatives from formalin.Keywords: Formalin, Borax, Preservatives, Fehling A, Fehling B, Turmeric
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Dawe, Richard A. "Factors influencing the Knight and Allen EDTA invert sugar test method for white sugars." Sugar Industry international, February 23, 2025, 183–92. https://doi.org/10.36961/si33105.
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Monitoring sugar quality is crucial to many industries. Rapid and accurate methods are needed which are not expensive and complex, and which can be carried out by relatively inexperienced technical staff anywhere in the world. This paper is concerned with aspects of the physical experimental conditions of the Knight and Allen test for the determination of trace mass fractions, up to 0.05 g/100 g, of ‘invert sugar’ (dextrose and fructose) in purified sugar (i.e. sucrose). It is an ICUMSA® standard Method, GS2-5 (2011), that is used across the whole sugar producing industry many times daily. The test is a titration method using a calibrated alkaline cupric sulphate, Fehling’s solution, which is a deep blue complex solution of salts. If invert sugar is present and the solution heated, the invert sugars react with some of the cupric solution and the copper is thrown down as a brick-red precipitate. Sucrose has no effect on Fehling’s solution. Any excess unreacted cupric ions are then titrated with standardised EDTA solution with murexide as indicator and the amount of invert sugar is reliably deduced. In this paper the essential science of the method and then effects of various variables of boiling time, size of tubes, weight of sample, titration volume and the addition of the indicator are examined. In the future automated potentiometric end point determinations may become possible, but in the meantime this paper will be useful for laboratory operators to gain procedural confidence and accuracy with this test and hone their experimental technique.
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Mendoza, Mae Angelica. "Assessment of the acceptability, proximate properties, and product cost of amylase-enhanced mixed cassava and sweet potato syrup." Pantao (International Journal of the Humanities and Social Sciences), 2025. https://doi.org/10.69651/pijhss040250.
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The variety of goods obtained from root crops, particularly cassava and sweet potatoes, is getting low, thereby affecting their sustainability. The researcher has produced a syrup by combining cassava and sweet potato starch. This study evaluated the sensory acceptability, proximate characteristics, and production cost of a blend of cassava and sweet potato syrup with amylase. The procedure involves boiling cassava starch with purified water for 30 minutes; thereafter, amylase enzyme is incorporated into the slurry. The enzyme is stirred and combined with the slurry, converting it into a liquid, and then simmered for 30 minutes until it attains a syrupy consistency. The nutritional analysis and physicochemical evaluation of food products were performed at DOST CAR utilizing various methodologies. The technique included ash determination by the Gravimetric Method, which entails weighing samples prior to and subsequent to the ash determination procedure. Total carbs were determined based on the Philippine Food Composition Tables (FNRI), which provide extensive information on the chemical and nutritional composition of foods. Crude lipids were extracted via the Soxhlet extraction method, which entails heating a solvent to facilitate lipid extraction. The Kjeldahl method, which involves digesting the sample in concentrated sulfuric acid followed by pH adjustment, was employed to determine crude protein. The moisture content was assessed using the oven method, wherein a representative sample of the food material is placed into a pre-weighed dish and heated in a preheated oven at a designated temperature. The ALne-Eynon Constant Volumetric Method was employed to quantify sugar content, ascertained using Fehling's solution. The pH was evaluated utilizing the Potentiometric Method/AOAC 945.27, which quantifies the electrical potential of a solution with an electrode to ascertain the pH level. These approaches yielded significant insights into the chemical and nutritional composition of the food products. This study employed hedonic scaling, a 9-point hedonic scale that has been utilized in food science for over six decades, to assess cassava syrup. The brain's production of numerical values and categories of numbers is essential for choosing measurement methods. The research assessed parametric statistical analysis of scaling data and investigates alternatives, including simple ranking using the hedonic R-Index signal detection method. Judges ingested the cassava, cleansed their lips, and observed intermissions. They assessed the position on the scale that most precisely reflects the flavor of the food, taking into account their distinct preference for cassava syrup. The study seeks to ascertain the classification of cassava syrup as advantageous, harmful, or neutral. The study employed a weighted mean to analyze the data, determined by multiplying the values in the dataset and aggregating the results. The formula for the weighted mean is expressed as Σwx / Σw, where Σ denotes summation and w signifies weights. One-way ANOVA is a statistical technique employed to compare means across groups. The study revealed that the syrup containing 1/4 teaspoon of amylase exhibited a marginally favored appearance, but the syrup with 1/2 teaspoon demonstrated a moderate preference. The third sample with 1 teaspoon of amylase exhibited a significant preference, demonstrating a slight inclination towards clarity and uniformity. The participants preferred the syrup containing 1/2 teaspoon of amylase compared to the other options. The study indicated that syrups containing 1/4 teaspoon of amylase had a marginally preferred aroma, but those with 1/2 teaspoon demonstrated a moderately preferred aroma. The participants favored the syrup containing 1/2 teaspoon of amylase compared to the alternatives, with a mean intensity of 6.09 and a pleasantness rating of 5.93. The study revealed that syrups with varying amylase concentrations elicited distinct preferences. The initial syrup, comprising 1/4 teaspoon of amylase, had a moderate inclination towards sweetness, but the subsequent syrup displayed a slight preference. The third syrup, which contained 1 teaspoon of amylase, exhibited a moderate preference, with participants liking the initial flavor. The research indicated that syrup containing 1/4 teaspoon of amylase was marginally favored by tasters. The second syrup was moderately preferred, whilst the third possessed a relatively esteemed texture. The participants preferred the syrup consistency with 1 teaspoon of amylase compared to the alternatives. The study indicated that participants favored the syrup formulation with 1/2 teaspoon of amylase compared to the others. The syrup containing 1/2 teaspoon of amylase had a somewhat more favorable appearance, aroma, flavor, and texture. The syrup mixture with 1/2 teaspoon of amylase had the highest preference, with a weighted mean of 6.07. The syrup mixture containing 1/2 teaspoon of amylase was deemed satisfactorily acceptable by most respondents.
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Stojanovska, Marina, Bojan Šoptrajanov, and Vladimir M. Petruševski. "MISCONCEPTIONS IN THE CHEMISTRY TEACHING IN THE REPUBLIC OF MACEDONIA REGARDING THE OXIDATION REACTIONS OF MONOSACCHARIDES." Contributions, Section of Natural, Mathematical and Biotechnical Sciences 34, no. 1-2 (2017). http://dx.doi.org/10.20903/csnmbs.masa.2013.34.1-2.40.
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The easy oxidation of the substances containing aldehyde groups using a mild oxidizing agents, such as solutions containing copper(II) or silver(I) ions, can provide a mean to detect the presence of carbohydrates known as reducing sugars. However, using such tests, it is not possible to distinguish between aldoses and ketoses because the alkaline conditions in the reaction system lead to tautomerization of the α-hidroxyketone and immediate oxidation of the product so that both glucose and fructose will react with the oxidizing agents (the Tollens’ and Fehling’s reagents). In fact, the reaction of fructose is even faster than that of glucose. A misinterpretation or simple neglect of these experimental facts is present in some textbooks in the Republic of Macedonia and this influences the chemistry teaching by creating misconceptions among students and teachers.
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Solita Evangeline S. Bañez and Alfredo R. Rabena. "Phytochemical Screening of Samak (Macaranga tanarius) and its Fermenting and Coloring Properties." Vector: International Journal of Emerging Science, Technology and Management (IJESTM) 13, no. 1 (2004). https://doi.org/10.69566/ijestm.v13i1.175.
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This study determined the fermenting and coloring properties of "samak"(Macgranga tanariusj using leaves and barks in the production of home-made vinegar. The color, taste and aroma of the produce were compared with the commercial vinegar "Datu Puti". In this study, phytochemical screening was limited to the leaves. In vinegar making, the barks and leaves were used separately. This study made use of the experimental research design in an actual laboratory set-up. There were three phases: Phase I - air drying extraction process. Phase II- phytochemical screening using Mayer's Test for alkaloids. Fehling's test for glycosides, Gelatin Testfor tannins, Froth Test for saponins, Color Test for flavonoids, and Lieberman-Burchard Testsfor sterols; and Phase III - " samak" vinegar making as such. The "samak" leaves are good catalyst and coloring agents for vinegar because they contain sterols, flavonoids, saponins, glyeosides, and tannins. The bark produced the most desirable aroma in. contrast to thecommercial "Data Puti" which was categorized most sour. A follow up study must be conducted to quantify, isolate and identify the type of alkaloids, glycosides, tannins, saponins, sterols and flavonoid content of the leaves. Phytochemical screening should likewise be done in all the other parts ofthe "samak"plant. Further studies should be done to determine the differences betveen and among the three vinegar solutions using leaves, bark andcombined leafand hark of "samak".
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-, Diksha Saharia. "Cultivating Health: a Comprehensive Study on Antimicrobial Activity and Phytochemical Composition of Coriander (Coriandrum Sativum) Seeds." International Journal For Multidisciplinary Research 6, no. 2 (2024). http://dx.doi.org/10.36948/ijfmr.2024.v06i02.17025.
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The increasing rate of multi drug resistant pathogens and emergence of non-native pathogens, a quest for novel bioactive compounds has gained extensive attention. Plants have always been serving us as a potential source of bioactive metabolites further resulting in antimicrobial production which is of great use. Coriandrum sativum, commonly known as Coriander or Cilantro, has been celebrated for its culinary uses, adding a burst of flavor and flavor and aroma to dishes worldwide. Beyond its gastronomic delights, this herbaceous plant holds gem within its seeds- a treasure trove of antimicrobial compounds. Coriandrum sativum is one of those valuable plants that contain essential components known as ‘phytochemicals’ and microbe inhibiting property known as ‘antimicrobial property’. The present work is done to test whether Coriandrum sativum contains the phytochemicals and antimicrobial property or not. People consume it as remedy for various diseases like diarrhea, acidity, cholesterol, diabetes, UTI and many more. The phytochemical analysis of the seeds the plant was carried out and it was revealed that they produce essential phytochemicals like tannin, flavonoid, saponin, phenol, steroid, carbohydrate etc. Chemicals like chloroform, Fehling’s solution, H2SO4, HCl etc. were used for the phytochemical tests. The antimicrobial activity of the plant against gram positive and gram-negative bacterial species E. coli were also observed. To test the antimicrobial property, two different solvents Methanol and Petroleum ether were added to seed extract of the plant. Well diffusion method was used for this. After the analysis, positive result was observed which was indicated by a zone of inhibition.
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Zhang, Yu, An-An Li, Shi-Ning Xiao, et al. "A Bibliometric Analysis of Publications on Spinal Cord Injury Treatment With Glucocorticoids Using VOSviewer." Frontiers in Public Health 10 (August 8, 2022). http://dx.doi.org/10.3389/fpubh.2022.907372.
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BackgroundSpinal cord injury (SCI) has devastating physical and social consequences for patients. Systemic administration of methylprednisolone (MP) at a higher dosage though can reduce neurological deficits following acute SCI. Still, this treatment regimen is controversial, owing to the apparent dose-related side effects and relatively minor improvement in neurological function. Therefore, this study aimed at the bibliometric analysis of published literature related to SCI treatment, which may lead to future research trends.MethodsThe literature published relating to SCI and using glucocorticoids for its treatment between 1982 and 2022 was collected and scanned in the Web of Science collection database using the keywords glucocorticoid, dexamethasone, MP, corticosteroids, and SCI, followed by using VOSviewer for bibliometric analysis of these articles.ResultsA total of 1,848 published articles and 7,448 authors on SCI and glucocorticoid usage were identified. The SCI total link strength accounts for 1,341, and MP for 762 has a strong link to neuroprotection and inflammation. The mean citation count for the top 20 most-cited articles was 682 (range: 358–1,828), where most of these were descriptive studies having focused on clinical features. The Journal of Neurotrauma was the highest-ranked journal with 6,010 citations. A total of 69 articles were published by Michael G Fehlings from the University of Toronto with 6,092 citations. The University of Toronto has published 90-related manuscripts with 7,632 citations. In contrast, 800 articles were published in the United States, with 39,633 citations and total link strength of 5,714. The second-ranked country was China, with 241 published articles and 3,403 citations.ConclusionsThe research published on applying MP in treating SCI has increased with time. Although the United States has made a significant global contribution to this important field of research, it requires rigorous clinical trials designed to verify the therapeutic role of MP in SCI and its appropriate dosage to find solutions for neurological recovery.