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Journal articles on the topic 'Nitric acid extract'

Author: Grafiati

Published: 30 May 2022

Last updated: 31 July 2025

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1

Alimullah, Mirza, Nishad Anjum, Md Junaeid Rahman та ін. "Identification of Polyphenols and Evaluation of Antioxidant and α-Amylase Inhibitory Activity of Wheat Bran Extracts". Journal of Biosciences and Experimental Pharmacology 1, № 1 (2023): 91–114. https://doi.org/10.62624/jbep00.0006.

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The aim of this study was to evaluate the bioactive compounds identification and determine the potential antioxidant and alpha(α)-amylase inhibitory activities of Wheat Bran (WB) extract. Phytochemical analysis was done by high performance liquid chromatography (HPLC) and gas chromatography (GC) in ethanol and n-hexane extract. Antioxidant potential was determined by nitric oxide scavenging and DPPH free radical scavenging assays. HPLC analysis showed the presence of dihydroxybenzoic acid, catechin hydrate, (-) epicatechin, caffeic acid, rutin hydrate, p-coumaric acid, trans-ferulic acid, rosm

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Handani, Sri, Sri Wildani, and Emriadi. "PENGARUH INHIBITOR EKSTRAK DAUN INAI (lawsonia inermis) TERHADAP LAJU KOROSI BAJA ST. 37 DIUKUR DENGAN METODE PENGURANGAN MASSA." Jurnal Riset Kimia 4, no. 1 (2015): 73. http://dx.doi.org/10.25077/jrk.v4i1.148.

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Vol. 4, No. 1ABSTRACT The corrosion tests and micro structure analysis of St. 37 steel had been investigated. These investigation were conducted in nitric acid (HNO3). The range of concentration added was from 0-0.5 N with extract of henna leaves as inhibitors. The method used was losing mass by measuring loss mass of steel before and after corrosion. The boiling method was used to get the extract of henna leaves. Optical photo Carton Stereo Trinokuler were used for micro structure. Corrosion rate can be reduced by adding inhibitor and inhibition efficiency is measured if its ability to suppre

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Kharat, Amol R., Farooqui Zakerab, and Kiran Ramesh Kharat. "Free Radical Scavenging Potential of Mentha arvensis of South Gujarat: Evidence from In-vitro Assay." Journal of Drug Delivery and Therapeutics 9, no. 3 (2019): 263–68. http://dx.doi.org/10.22270/jddt.v9i3.2866.

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Present work was undertaken to evaluate efficacy of aqueous and methanol extracts Mentha arvensis leaves as free radical scavenger. The free radical scavenging activity was evaluated by nitric oxide scavenging method, hydrogen peroxide scavenging method and ferric thiocyanate method. The result of the studies was compared with the standard solution of Ascorbic Acid (Vitamin C) treated with same reagent. The results of all the studies showed significant free radical scavenging activity in both aqueous and methanolic extracts of Mentha arvensis and methanolic extract showed the highest free radi

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Abu, T., O. O. Ogbole, and E. O. Ajaiyeoba. "Radical Scavenging Activity, Brine Shrimp Lethality Assay and HPLC Analysis of Methanol Extracts of Secamone afzelii." Nigerian Journal of Pharmaceutical Research 17, no. 2 (2022): 233–44. http://dx.doi.org/10.4314/njpr.v17i2.9.

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Background: Medicinal plants produce several phytochemicals with strong free radical scavenging activities. Objectives: To evaluate radical scavenging activity, brine shrimp toxicity and high-performance liquid chromatography (HPLC) analysis of the methanol extracts of Secamone afzelii (SA) leaves and Ceiba pentandra (CP) stem-bark.Materials and methods: The leaves of SA and CP stem-bark were extracted with methanol and the total phenolic content (TPC) of the extracts was determined and expressed as gallic acid equivalents (GAE). The extracts were evaluated for their nitric oxide scavenging ac

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Chika C Abba, Chineze B Nsofor, Chioma C Udeozor, et al. "In-vitro comparative study of solvent effect on antioxidant properties of leaf extracts of Anthocleista djalonensis." Magna Scientia Advanced Biology and Pharmacy 11, no. 2 (2024): 072–79. http://dx.doi.org/10.30574/msabp.2024.11.2.0020.

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This study demonstrated that the extraction solvents play an important role in the extraction of important bioactive compounds with antioxidant properties from the leaves of Anthocleista djalonensis. Anthocleista djalonensis, a plant native to tropical Africa, is believed to have antioxidant properties due to its bioactive composition. The powdered leaves were macerated using local gin, hot distilled water, and analytical ethanol to extract bioactive compounds. The in vitro antioxidant activity of these extracts was assessed using 2, 2-diphenyl-1-picrylhydrazyl (DPPH) scavenging assays, nitric

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Choi, Jieun, Young Yun Jung, In Jin Ha, et al. "In Vitro Anti-Inflammatory and Skin Moisturizing Properties of Pilea martini (Levl.) Hand.-Mazz. Extracts." Natural Product Communications 15, no. 11 (2020): 1934578X2096786. http://dx.doi.org/10.1177/1934578x20967866.

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The in vitro anti-inflammatory and skin moisturizing activities of Pilea martini (Levl.) Hand.-Mazz. were investigated on lipopolysaccharide (LPS)-stimulated RAW264.7 macrophages and human immortalized keratinocytes. Chromatographic analysis was performed to identify the chemical composition of the extracts. Pilea martini extracts significantly suppressed LPS-induced nitric oxide, prostaglandin E2, interleukin 6, and tumor necrosis factor α production in dose-dependent manners. In addition, the extracts inhibited LPS-induced inducible nitric oxide synthase and cyclooxygenase-2 proteins and the

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Nguyen, Huong Thi Diem, Son Hong Phan, Huong Dang Thien Bui, Hoai Thi Cam Ho, and Mai Thi Thanh Nguyen. "BIOACTIVITIES AND CHEMICAL CONSTITUENTS OF A VIETNAMESE MEDICINAL PLANT VANG SE JASMINUM SUBTRIPLINERVE BLUME." Science and Technology Development Journal 15, no. 3 (2012): 37–44. http://dx.doi.org/10.32508/stdj.v15i3.1815.

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From the total crude ethanol extract of Jasminum subtriplinerve Blume.’s leaves and stems, (Vang se in Vietnamese), four extracts were obtained by partitioning with petroleum ether, cloroform, ethyl acetate and n-butanol solvents. These four extracts were tested for antioxydative activity, determined using the DPPH●.radical scavenging and nitric oxyde-inhibitory assay. All the extracts showed antioxidative activity except the petroleum ether extracts. Among the crude extracts, the acetate ethyl extract was the most potent extract in both assays with the SC50 values of 8.2 μg/mL and 80.7 μg/mL,

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Pranaya P and AkilaDevi D. "An Investigation of free radical scavenging activity of various extracts of Olax scandens (family Olacaceae)." International Journal of Research in Pharmaceutical Sciences 11, no. 1 (2020): 397–402. http://dx.doi.org/10.26452/ijrps.v11i1.1833.

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Olax scandens Roxb. (family Olacaceae) Available in throughout tropical India. The current study, aerial parts of different extracts of Olax scandens by different in-vitro methods. The antioxidant activity was evaluated by Hydroxyl radical scavenging activity(OH radical), Nitric oxide radical scavenging activity(NO radical), and total antioxidant activity (Phosphomolybdic acid method) with reference standard Ascorbic acid. An IC50 value was originated that methanolic extracts of Olax scandensis more efficient in Hydroxyl radical scavenging activity, Nitric oxide radical scavenging, total antio

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Olaitan, Michael O., Cosmas O. Ujowundu, Chiamaka P. Nzebude, et al. "Organic wastes of Citrus sinensis Peels- a source of eco-friendly and sustainable bioactive compounds for promoting health." Asian Journal of Biochemistry, Genetics and Molecular Biology 16, no. 2 (2024): 21–31. http://dx.doi.org/10.9734/ajbgmb/2024/v16i2358.

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To determine the phytochemicals, radical scavenging and antioxidant potential of orange peel extract. Citrus sinensis were subjected to extraction with ethanol. Gas chromatography (GC) was utilized to determine the phytochemical composition of orange peel extract. Hydrogen peroxide, superoxide, nitric oxide, and hydroxyl radical scavenging assays were conducted to assess radical scavenging potential of the extract. Antioxidant activities of the peel extracts were determined via the 2,2-diphenylpicrylhydrazyl (DPPH) free radical scavenging activity, ferric reducing antioxidant power (FRAP) assa

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Seo, Chang-Seob, Hye-Sun Lim, Soo-Jin Jeong, Hyekyung Ha, and Hyeun-Kyoo Shin. "HPLC-PDA Analysis and Anti-inflammatory Effects of Mori Cortex Radicis." Natural Product Communications 8, no. 10 (2013): 1934578X1300801. http://dx.doi.org/10.1177/1934578x1300801027.

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Mori Cortex Radicis (MCR, Moraceae) is used traditionally in the treatment of jaundice, hematemesis, edema, and pollakisuria in Korea. In this study, the anti-inflammatory effects of MCR extract were investigated using RAW 264.7 cells. The simultaneous analysis of five components present (neochlorogenic acid, chlorogenic acid, cryptochlorogenic acid, caffeic acid, and p-coumaric acid) in the MCR extract was performed using high-performance liquid chromatography (HPLC) coupled with photodiode array (PDA) detection. We determined the effects of MCR extract and its components on the production of

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Oso, Babatunde, Ige Olaoye, Emmanuel Ekpo, and Godswill Akhigbe. "Antioxidant potentials and anti-inflammatory properties of methanol extracts of ripe and unripe peels of Ananas comosus (L.) Merr." Ovidius University Annals of Chemistry 33, no. 1 (2022): 94–98. http://dx.doi.org/10.2478/auoc-2022-0013.

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Abstract Studies suggest that extracts from plant materials could play protective roles against various disorders associated with the interplay between oxidative response and inflammatory disorders. The aim of this study was to investigate the potential antioxidant and anti-inflammatory properties, and phytochemical analyses of methanol extract of ripe and unripe peels of Ananas comosus (L.) Merr. The antioxidant properties were investigated through the analyses of ferric ion reducing antioxidant capacities, ascorbic acid equivalent antioxidant capacities, and nitric oxide scavenging capacitie

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Ramya T., Sri, Swarnalatha K., and Sammaiah G. "Antioxidant Activity of the Methanolic Leaf Extracts of Alangium salviifolium, Tecoma stans and Pisonia alba by Nitric Oxide (NO) Free Radical Scavenging Assay." International Journal of Zoological Investigations 08, Special Issue (2022): 91–96. http://dx.doi.org/10.33745/ijzi.2022.v08i0s.011.

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Extracts of Alangium salviifolium, Tecoma stans and Pisonia alba were examined in methanol to see whether or not they have the ability to scavenge free radicals. The extract was able to considerably cut down on nitric oxide radicals while simultaneously scavenging free radicals. Common antioxidants such as ascorbic acid also possesses comparable antioxidant action, but at lower concentrations. It was discovered that an extract concentration of 200 g/ml had the highest potential to scavenge for free radicals.

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Kim, Jung-Eun, Nam-Ho Lee, So-Hee Kim, and Chan-Seoung Shin. "Comparative Analysis on Extract of Ilex cornuta Leaves in Anti-inflammatory and Anti-oxidative Activities." Society for Jeju Studies 62 (August 31, 2024): 285–99. http://dx.doi.org/10.47520/jjs.2024.62.285.

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In this study, the anti-inflammatory, anti-oxidative activities and content of chlorogenic acid were compared for the 50%, 80% ethanol (EtOH) and hot water extracts of Ilex cornuta leaves collected from Jeju. The yield of each extract was 14.8% (50% EtOH), 15.2% (80% EtOH) and 15.6% (hot water), it was similar to each other. In anti-inflammatory tests using lipopolysaccharide (LPS)-induced RAW 264.7 macrophages, the 80% EtOH extract had superior effects in inhibiting the production of nitric oxide (NO) than 50% EtOH and hot water extracts. Upon the anti-oxidative experiments by DPPH radical, p

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Kim, Gyoung-Deuck, Jin Lee, and Joong-Hyuck Auh. "Metabolomic Screening of Anti-Inflammatory Compounds from the Leaves of Actinidia arguta (Hardy Kiwi)." Foods 8, no. 2 (2019): 47. http://dx.doi.org/10.3390/foods8020047.

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The metabolomic screening of potential anti-inflammatory compounds in the leaves of Actinidia arguta was performed by using LC-MS/MS. Ethanol extracts were prepared, and the anti-inflammatory effects were investigated based on nitric oxide (NO) synthesis and inducible nitric oxide synthase expression in lipopolysaccharide-induced RAW 264.7 macrophages. The 75% ethanol extract showed the highest inhibitory effect on nitric oxide (NO) production, and it was further separated by in vitro bioassay-guided fractionation using preparative LC with reversed-phase column separation. Through multiple ste

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Sarwar, Shammy, Asif Hasan Malik, Muhammad Ashikur Rahman, Md Zakiur Rahman, and Md Sohel Rana. "Antioxidant, cytotoxic and analgesic activities of the methanolic fruit extract of Terminalia chebula Retz." International Current Pharmaceutical Journal 3, no. 1 (2013): 219–22. http://dx.doi.org/10.3329/icpj.v3i1.17296.

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The present study was aimed to investigate antioxidant, analgesic and cytotoxic activity of the methanolic extract of Terminalia chebula Retz. fruits. Antioxidant potential of the extract was evaluated by using nitric oxide scavenging assay, reducing power and total antioxidant capacity. The extract showed significant activities in all antioxidant assays compared to ascorbic acid in a dose dependent mode. In nitric oxide scavenging assay, the IC50 value of the extract was found to be 51.3 µg/mL while the IC50 value of ascorbic acid was 77.4 µg/mL. In addition to strong reducing power, total an

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Kumar, Dinesh, Navneet Verma, and Varsha Raj. "Quantitative Analysis of Gallic acid and Quercetin by HPTLC and In vitro Antioxidant activity of Averrhoa carambola Linn." Oriental Journal Of Chemistry 39, no. 3 (2023): 727–35. http://dx.doi.org/10.13005/ojc/390324.

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The preliminary phytochemical screening of ethanolic extracts of Averrhoa carambola (A. carambola) leaves were done using the standard protocol. The findings of phytochemical analysis exhibited the occurrence of Carbohydrates, Alkaloids, Steroids, Tannins, Vitamin C and flavonoids by using the Folin-Ciocalteu technique and the aluminum chloride colorimetric technique, respectively, the whole phenolic or flavonoid amounts were evaluated and were found 194.48±0.723 mg/g of dry extract as equivalent to gallic acid and 54.83±0.108 mg/g of dry extract as equivalent to quercetin respectively. In vit

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Mbiri, Jane Wanja, Kenneth Ogila, Patrick Kisangau, and Michael Gicheru. "Terminalia brownii Fresen: Stem Bark Dichloromethane Extract Alleviates Pyrogallol-Induced Suppression of Innate Immune Responses in Swiss Albino Mice." Evidence-Based Complementary and Alternative Medicine 2023 (February 21, 2023): 1–11. http://dx.doi.org/10.1155/2023/9293335.

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Terminalia brownii is widely used in folklore medicine and has diverse biological activities. However, its effect on the immune system is yet to be studied. Therefore, our study evaluated the immunomodulatory effect of T. brownii on nonspecific immunity. Innate immunity is the initial defence phase against pathogens or injuries. Dichloromethane plant extracts were tested on female Swiss albino mice and Wister rats. The effect of the extract on innate immunity was assessed via total and differential leukocyte counts, tumor necrosis factor-alpha, and nitric oxide production by mouse macrophages.

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Purba, Rayudika Aprilia Patindra, and Pramote Paengkoum. "Farang (Psidium guajava L.) Dried Leaf Extracts: Phytochemical Profiles, Antioxidant, Anti-Diabetic, and Anti-Hemolytic Properties for Ruminant Health and Production." Molecules 27, no. 24 (2022): 8987. http://dx.doi.org/10.3390/molecules27248987.

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Due to its advantageous antioxidant phytochemical components, Psidium guajava L. has become an indispensable plant in pharmaceutical formulations, playing a crucial role in safeguarding human health. On ruminant animals, however, there has been limited investigation. The purpose of this investigation was to assess the phytochemical profiles and biological potential of Farang (P. guajava L.) leaf extracts for ruminant health. Methanolic and hexanoic extracts from various agricultural areas were prepared over a five-month period. By means of HPLC-DAD, vitamin C (ascorbic acid), essential oil (eu

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Kanhiya Mahour. "In vitro antioxidant studies of some terrestrial indigenous plants." World Journal of Biology Pharmacy and Health Sciences 15, no. 1 (2023): 004–9. http://dx.doi.org/10.30574/wjbphs.2023.15.1.0287.

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The alcoholic extract of the plants Azadiracta indica, Argimone maxicana, Malvastrum tricuspidatum and Allium sativum were investigated for their free radical scavenging activity by DPPH and Nitric oxide scavenging method. Ethanolic extract of A. indica, and M. tricuspidatum, A.sativum and A. maxicana showed remarkable free radical scavenging activity. It interacted significantly with free radical DPPH at concentration of 8, 16, 32, 64, 125, 250, 500 and 1000mg/ml. The IC50 value was 63.71, 82.16, 64.62 and 73.6 mg/ml respectively as compared to 93.53 mg/ml of standard ascorbic acid. In nitric

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Alam, M. Ashraful, Abdul Ghani, Nusrat Subhan, et al. "Antioxidant and Membrane Stabilizing Properties of the Flowering Tops of Anthocephalus Cadamba." Natural Product Communications 3, no. 1 (2008): 1934578X0800300. http://dx.doi.org/10.1177/1934578x0800300114.

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The hydroethanolic extract of Anthocephalus cadamba displayed remarkable antioxidative potential in the 1,1-diphenyl-2-picrylhydrazyl (DPPH), the hydrogen peroxide, the nitric oxide scavenging, the reducing power, the total antioxidant capacity, the lipid peroxidation inhibition (thiobarbituric acid-reactive substances production), and the RBC membrane stabilization assays. While in the DPPH assay the IC50 value of the extract was 146.5 μg/mL, it was 24.8 μg/mL in the nitric oxide scavenging assay.

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Mitu, Liviu, Sweetlin Rajula Rubavathi, Muthupoongodi Subramani, T. Linda, and S. Balakumar. "Azadirachta indica Leaf as a Corrosion Inhibitor for Coper in Nitric Acid." Revista de Chimie 70, no. 2 (2019): 581–84. http://dx.doi.org/10.37358/rc.19.2.6960.

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The effect of Azadirachta indica leaf (AIL) extract on the corrosion of copper in 1M HNO3 was investigated by weight loss technique. The result showed that the corrosion rate decreased in the presence of plant extract and inhibition efficiency increased with increasing the concentration of extract. The decreased corrosion rate was due to adsorption of plant extract which was discussed on the basis of Langmuir adsorption isotherm.

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Rouamba, Ablassé, Moussa Compaoré, Maurice Ouédraogo, and Martin Kiendrebeogo. "Human Lymphocyte-Protective Effects of an Ethanol Extract from Detarium microcarpum Guill. and Perr. (Caesalpiniaceae) Fruit Pulp." Antioxidants 7, no. 8 (2018): 104. http://dx.doi.org/10.3390/antiox7080104.

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The current study aimed to evaluate, in vitro, the antioxidant capacity and the human lymphocyte-protective effect of the ethanolic extract from Detarium microcarpum fruit pulp against oxidative stress damage. Human lymphocytes were incubated with different concentrations of extract, followed by the addition of hydrogen peroxide or tert-butyl hydroperoxide. Cell viability was measured using 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay. Furthermore, the antioxidant property of the extract was evaluated in vitro using hydrogen peroxide and nitric oxide radical-scaveng

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Suriyaprom, Sureeporn, Pitchayuth Srisai, Varachaya Intachaisri, et al. "Antioxidant and Anti-Inflammatory Activity on LPS-Stimulated RAW 264.7 Macrophage Cells of White Mulberry (Morus alba L.) Leaf Extracts." Molecules 28, no. 11 (2023): 4395. http://dx.doi.org/10.3390/molecules28114395.

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The white mulberry (Morus alba L.) is widely used as a medicinal plant in Asia. In this study, the bioactive compounds of ethanolic extracts of white mulberry leaves from the Sakon Nakhon and Buriram cultivars were evaluated. The ethanolic extracts of mulberry leaves from the Sakon Nakhon cultivar showed the highest total phenolic content of 49.68 mg GAE/g extract and antioxidant activities of 4.38 mg GAE/g extract, 4.53 mg TEAC/g extract, and 92.78 mg FeSO4/g extract using 2,2 diphenyl-1-picrylhydrazyl (DPPH), 2,20-azinobis-(3-ethylbenzothiazolin-6-sulfonic acid) (ABTS), and ferric reducing a

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Stoilova, A., M. Kratchanova, and C. Kratchanov. "Comparative Investigations of the Influence of Polyvalent Alcohols and Fruit Extracts on the Physicochemical Properties of Tobacco." Beiträge zur Tabakforschung International/Contributions to Tobacco Research 16, no. 1 (1994): 1–9. http://dx.doi.org/10.2478/cttr-2013-0629.

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AbstractLaboratory investigations have been carried out into the application of water pectin extracts from dry apple pressings and orange peels as a moisture-retentive substance for use with tobacco from the unaromatizedRodopi blend. It has been established from comparative experiments with extracts, water pectin solutions and commonly applied humectants such as glycerol, diethylene glycol and propylene glycol that fruit pectin extracts can be used as humectants in tobacco production. The increase in the pectin content of the extract improves the moisture-retentive ability of tobacco, as does

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Pakdil, N. B., and A. Filibeli. "Effects of organic and inorganic acids on phosphorus release from municipal sludge." Water Science and Technology 56, no. 9 (2007): 87–94. http://dx.doi.org/10.2166/wst.2007.707.

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This paper reports on the effects of inorganic acids (sulphuric acid, hydrochloric acid, nitric acid) and organic acids (citric acid, oxalic acids) for phosphorus recovery from sludge and struvite precipitation results. It was observed that both inorganic acid and organic acids were effective at phosphorus release. The studies on precipitation of released phosphorus from sludge as magnesium ammonium phosphate (struvite) were also done using nitric and oxalic acids. Phosphorus and heavy metals of leachate were analyzed before and after precipitation. It was observed that heavy metal concentrati

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Turanov, A. N., V. K. Karandashev, O. I. Artyushin, and V. K. Brel. "Extraction of actinides and lanthanides from nitric acid solutions with diphosphine dioxides in the presence of an ionic liquid." Радиохимия 65, no. 5 (2023): 410–17. http://dx.doi.org/10.31857/s0033831123050027.

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The e ect of 1-butyl-3-methylimidazolium bis[(tri uoromethyl)sulfonyl]imide ionic liquid on the extraction of lanthanides(III), U(VI), and Th(IV) from nitric acid solutions with 1,2-bis(diphenylphosphinyl)ethane I and 1,2-bis(diphenylphosphinyl)benzene II has been studied. The stoichiometry of the extractable complexes was determined. A solution of dioxide II in dichloroethane extracts metal ions much more e ciently than a solution of dioxide I. It has been established that, in the presence of an ionic liquid in the organic phase, the e ciency of extraction of metal ions from nitric acid solut

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GÓMEZ, Juan M., and Mario F. GUERRERO. "ASSESSMENT OF THE CARDIOVASCULAR EFFECTS OF THE EXTRACT AND COMPOUNDS FROM <I>Solanum tuberosum</I> IN THE PITHED RAT." Vitae 16, no. 3 (2009): 320–26. http://dx.doi.org/10.17533/udea.vitae.2802.

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This study evaluates the effects on arterial pressure and pithed heart frequency rate induced by the ethanolic extract of Solanum tuberosum, a species used in Colombian folk medicine for the treatment or arterial hypertension, compared with a-solanine and a-chaconine -the main glycoalcaloids of S. tuberosum- the mixture of both glycoalcaloids (50:50) and chlorogenic acid, the main polyphenolic compound present in this species. The effect of the extract in presence of noradrenalin (0.25 - 2.5 μg/Kg, IV) and L-NAME (10 mg/Kg, IV), inhibitor of nitric oxide sintase, is also studied. These results

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Chansiw, Nittaya, Kamonnaree Chotinantakul, and Somdet Srichairatanakool. "Anti-inflammatory and Antioxidant Activities of the Extracts from Leaves and Stems of Polygonum odoratum Lour." Anti-Inflammatory & Anti-Allergy Agents in Medicinal Chemistry 18, no. 1 (2019): 45–54. http://dx.doi.org/10.2174/1871523017666181109144548.

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Background: Polygonum odoratum is an indigenous vegetable that has been used as a favoring agent and also used as a Thai traditional medicine to treat flatulence. </P><P> Objective: To analyze active ingredients, total phenolic and total flavonoid contents, antiinflammatory and antioxidant activities from leaf and stem extracts of P. odoratum. </P><P> Methods: Leaves and stems were dried and extracted by using methanol, dichloromethane and water for obtaining Methanolic Leaf Extract (MLE), Methanolic Stem Extract (MTE), Dichloromethane Leaf Extract (DLE), Dichloromethan

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Merecz-Sadowska, Anna, Przemysław Sitarek, Tomasz Kowalczyk, et al. "In Vitro Evaluation and In Silico Calculations of the Antioxidant and Anti-Inflammatory Properties of Secondary Metabolites from Leonurus sibiricus L. Root Extracts." Molecules 28, no. 18 (2023): 6550. http://dx.doi.org/10.3390/molecules28186550.

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Leonurus sibiricus L. has great ethnobotanical and ethnomedicinal significance. This study aimed to assess the antioxidant and anti-inflammatory properties of Leonurus sibiricus L. transgenic roots extracts transformed by Rhizobium rhizogenes, with and without the AtPAP1 transcriptional factor. The study determined the total phenolic and flavonoid contents, as well as in vitro antioxidant assays, including hydrogen peroxide and nitric oxide scavenging activity. In addition, in silico computational studies and molecular docking were conducted to evaluate the antioxidant and anti-inflammatory po

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Sakuljaitrong, Supasorn, Nopparat Buddhakala, Moragote Buddhakala, et al. "Phytochemicals, Cytotoxicity, Inhibitory Effect on Nitric Oxide Production and Alpha-Glucosidase Activity, and DPPH Scavenging Activity of Leaf Extract from Gymnema inodorum (Lour.) Decne." Trends in Sciences 20, no. 5 (2023): 6548. http://dx.doi.org/10.48048/tis.2023.6548.

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Investigation of phytochemicals, cyto-toxicity, inhibitory effect on nitric oxide (NO) production and α-glucosidase activity, and DPPH scavenging activity of leaf extract from Gymnema inodorum (Lour.) Decne (LEGI) revealed that GC-MS analysis demonstrated the presence of 83 phytochemicals with 5 main compounds i.e. Phytol (18.14 %), n-Hexadecanoic acid (12.45 %), 9,12-Octadecadienoic acid (Z,Z)-(3.92 %), 9,12,15-Octadecatrienoic acid, (Z,Z,Z)-(10.39 %) and Betulin (8.56 %), and 78 trace compounds in LEGI. MTT assay to investigate cytotoxicity showed that LEGI exhibited low cytotoxicity to the

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UWAYA, O. D. "FREE RADICAL SCAVENGING AND ANTIOXIDANT CAPACITY OF LEAF OF Combretum platypterum (Welw) Hutch and Dalzie." GVU Journal of Science, Health and Technology 9, no. 1 (2024): 53–61. https://doi.org/10.5281/zenodo.13334657.

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An antioxidant is a molecule capable of preventing or inhibiting the oxidation of other molecules. Itends these reactions by removing free radical intermediates and inhibiting other oxidation reactions. Combretumplatypterum is a plant that belongs to the family Combretaceae. Despite being used in ethnomedicine, thereis no report of the in vitro antioxidant and free radical scavenging activities of its leaves. This study is aimedat testing the in vitro antioxidant and free radical scavenging activities of Combretum platypterum leaves. Invitro antioxidants such as ascorbic acid, carotenoids, and

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Malik, Rayees Ahmad, Mabroukah Massuod Saad, and Surabhi Tiwari. "Effect of Extraction Time and Solvent Power on Phytochemical Screening and Antioxidant Activity of Momordica charantia L. Fruit Extracts." Asian Journal of Chemistry 31, no. 3 (2019): 647–50. http://dx.doi.org/10.14233/ajchem.2019.21715.

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This work reports the analysis of phytochemical screening and antioxidant activity of Momordica charantia L. fruit extracts at different extraction conditions. The standard procedures are achieved by ferric reducing antioxidant, nitric oxide scavenging assay methods. Extraction under different maceration periods viz. 6, 12, 24 and 48 h organic solvent especially ethanol was found more effective followed by water extract, acetone and ethyl acetate. The maximum number of phytochemicals were observed at 12 h followed by 6 h. Hence, the medium time duration influences the extraction of phytochemic

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Basalingappa, Kanthesh M., Kavitharaj V, Avinash KO, et al. "In vitro antioxidant activities of stem bark, leaves and callus extracts from Amoora rohituka." International Journal of Phytomedicine 9, no. 4 (2017): 584. http://dx.doi.org/10.5138/09750185.2179.

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<p><strong>Abstract</strong><strong></strong></p><p>The present work examined the <em>in vitro</em> antioxidant activity of sequentially extracted, solvent extracts (Petroleum ether, chloroform and Methanol) of stem bark, leaves and callus from <em>Amoora rohituka</em>. The antioxidative capacity of the extracts were examined by using DPPH (1,1-diphenyl,2-picryl hydrazyl), ABTS (2,2’-azinobis-3-ethyl-benzothiozoline-6-sulphonic acid) and NOS (Nitric oxide scavenging) assays by using Gallic acid as standard control. Among the tes

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Sánchez, M., Mauro Cesar Terence, and Juan Alfredo Guevara Carrió. "An Improved Method to Extract Crystalline Cellulose from Alternatives Sources." Defect and Diffusion Forum 371 (February 2017): 128–30. http://dx.doi.org/10.4028/www.scientific.net/ddf.371.128.

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Crystalline cellulose can be obtained from alternative sources like waste wood by hydrolysis with hydrochloric or sulfuric acid. In this study we report a process for producing crystals with high cellulose crystallinity index of approximately 82%. We chose to work with eucalyptus FSC certified as a way to ensure the reproducibility of experiments. Said wood samples were subjected to acid hydrolysis with nitric acid. The resulting mass was dried out and measured by the X-ray diffraction method.

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Kim, Yon-Suk, Jin-Hwa Jung та Ki-Tae Kim. "Sorbus commixta Fruit Extract Suppresses Lipopolysaccharide-Induced Neuroinflammation in BV-2 Microglia Cells via the MAPK and NF-κB Signaling Pathways". Molecules 29, № 23 (2024): 5592. http://dx.doi.org/10.3390/molecules29235592.

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Sorbus commixta Hedl. is a traditional medicinal plant in Korea, China, and Japan with known antioxidative, anti-inflammatory, anti-atherogenic, and anti-melanin activities. However, its anti-neuroinflammatory effects remain largely unknown. In this study, we investigated the inhibitory effects of S. commixta fruit extracts on lipopolysaccharide-stimulated pro-inflammatory factors in BV-2 microglia. We compared the anti-neuroinflammatory activity of S. commixta fruit water extract (SFW) and 70% ethanol extract using a nitric oxide assay. Our data indicated that the SFW (25–100 μg/mL) treatment

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Martins-Gomes, Carlos, Jan Steck, Judith Keller, Mirko Bunzel, Fernando M. Nunes, and Amélia M. Silva. "Molecular Characterization of Thymus capitellatus Extracts and Their Antioxidant, Neuroprotective and Anti-Proliferative Activities." International Journal of Molecular Sciences 23, no. 23 (2022): 15187. http://dx.doi.org/10.3390/ijms232315187.

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Thymus capitellatus Hoffmanns & Link is an endemic species of the Iberian Peninsula listed as near-threatened, due to its restricted geographical distribution, occurring mainly in Portugal’s mainland. In this work, we detail for the first time T. capitellatus extracts’ phytochemical composition, as well as an evaluation of bioactivities to point out potential health benefits. Aqueous decoction (AD) and hydroethanolic (HE) extracts were obtained, both rich in flavonoids. However, quercetin-(?)-O-hexoside was identified as the main compound in T. capitellatus HE extract, while the phenolic a

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Castejón, Maria Luisa, Maria Ángeles Rosillo, Isabel Villegas, et al. "Quercus ilex Extract Ameliorates Acute TNBS-Induced Colitis in Rats." Planta Medica 85, no. 08 (2019): 670–77. http://dx.doi.org/10.1055/a-0889-6132.

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Abstract Quercus ilex L. (Fagaceae) is one of the most commonly used plants in folk medicine in the Mediterranean region to treat gastrointestinal disorders. The aim of the present study was to evaluate the effects of a polyphenol extract from mature leaves of Q. ilex on acute 2,4,6-trinitrobenzene sulfonic acid-induced colitis in rats. A polyphenol extract from mature leaves of Q. ilex (250 and 500 mg/kg/day) was administered by gavage 48, 24, and 1 h prior to the induction of colitis with 2,4,6-trinitrobenzene sulfonic acid as well as 24 h later. The inflammation response was assessed by his

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Habeebulla, M. Muhammed, and Malarkodi Velraj. "In vitro Antioxidant and Antidiabetic Activities of the Bark Extracts of Kandelia candel (L.) Druce." Asian Journal of Chemistry 34, no. 7 (2022): 1788–94. http://dx.doi.org/10.14233/ajchem.2022.23749.

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In present study, various extracts using different solvents such as petroleum ether, ethyl acetate and ethanol were subjected to in vitro antioxidant and antidiabetic activities. Ethanolic extract showed the highest activities in all antioxidant studies such as DPPH scavenging, ABTS scavenging and nitric oxide methods but it is comparatively weaker than standard drug ascorbic acid. In vitro antidiabetic activities were performed by using α-amylase and α-glucosidase inhibition in both method ethanolic extract showed highest activity, but the standard drug acarbose showed more potent than all ot

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de Melo, Mariza Pires. "Antioxidant actions of olive leaf extract (Olea europaea L.) on reactive species scavengers." Journal of Analytical & Pharmaceutical Research 9, no. 2 (2020): 68–71. http://dx.doi.org/10.15406/japlr.2020.09.00354.

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This study aimed to evaluate in vitro antioxidant action of olive leaf extract (Olea europaea L.) by: i) Trolox equivalent antioxidant capacity (TEAC) by ABTS•+, DPPH and Ferric reducing antioxidant power (FRAP) assays; ii) scavenging of superoxide anion (O2•-), hypochlorous acid (HOCl) and nitric oxide (NO), compared to ascorbic acid. Results showed TEAC values as 0.148±0.015, 0.215±0.076 and 0.282±0.023 gram of trolox equivalent per gram of dry extract weight, to respective ABTS•+, DPPH• and FRAP. Olive leaf extract was better antioxidant than ascorbic acid on O2•- scavenging, at concentrati

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Veliscek-Carolan, J., K. A. Jolliffe, and T. L. Hanley. "Effective Am(iii)/Eu(iii) separations using 2,6-bis(1,2,4-triazin-3-yl)pyridine (BTP) functionalised titania particles and hierarchically porous beads." Chemical Communications 51, no. 57 (2015): 11433–36. http://dx.doi.org/10.1039/c5cc03957f.

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Karelin, Vladimir Alexandrovich, Bach Thuan Kieu, Hai Son Le, and Nadezhda Vladimirovna Karelina. "Use of di-(2-ethylhexyl)-orthophosphoric acid for the extraction of lanthanum, neodymium, samarium and yttrium from nitric acid solutions." Nuclear Science and Technology 13, no. 3 (2024): 38–45. http://dx.doi.org/10.53747/nst.v13i3.444.

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The process of separating rare-earth elements into individual components is considered the most important problem in rare-earth technology because of the similarity in their physical and chemical properties. Currently in the world dialkyl phosphate compounds are widely used as effective extractors for rare earths. However, most extraction processes have been studied from hydrochloric acid or perchlorate solutions. In Russia, tributyl phosphate has long been used to extract rare earths from nitric acid solutions, but the distribution coefficients of the elements are not high, and the process mu

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Amaeze, O. U., G. A. Ayoola, M. O. Sofidiya, A. A. Adepoju-Bello, A. O. Adegoke, and H. A. B. Coker. "Evaluation of Antioxidant Activity ofTetracarpidium conophorum(Müll. Arg) Hutch & Dalziel Leaves." Oxidative Medicine and Cellular Longevity 2011 (2011): 1–7. http://dx.doi.org/10.1155/2011/976701.

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This study evaluated the antioxidant activity as well as bioflavonoid content of the methanol and ethanol-water extracts of the fresh and dried leaves ofTetracarpidium conophorum. Antioxidant activity was determined by spectrophotometric methods using DPPH free radical, nitric oxide radical inhibition and ferric reducing antioxidant power assays. In addition, total phenolics, flavonoids and proanthocyanidin content were also determined. The ethanol: water extract of the dried leaves had the highest antioxidant activity with a 50% inhibition of DPPH at a concentration of 0.017 mg/mL compared to

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Timothy, Odaro, and G. C. Ugwu. "ANTIOXIDANT ACTIVITIES OF ETHANOL LEAF EXTRACTS OF PSIDIUM GUAJAVA L., TERMINALIA CATTAPA L. AND THEIR COMBINED FORMULATION." FUDMA JOURNAL OF SCIENCES 6, no. 3 (2022): 248–53. http://dx.doi.org/10.33003/fjs-2022-0603-986.

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Free radicals in the body are the cause of many chronic and debilitating conditions in humans by acting as oxidants in the body. This research was aimed at assessing the antioxidant potential of the leaf extracts of Psidium guajava, Terminalia catappa and a combination of both. The leaves of both plants were independently extracted with ethanol. Equal portions of the extracts of both species were also combined to obtain a formulation of ratio 1:1. The extracts were subjected to in vitro assays including DPPH (2, 2-Diphenyl-1-picrylhydrazyl) and nitric oxide scavenging activities, while in vivo

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Oyinlade, C. Ogundare. "A STUDY OF CYTOTOXIC POTENTIAL AND ANTIOXIDANT ACTIVITY OF FRUIT OF ANNONA MURICATA." International Journal of Zoology and Applied Biosciences 5, no. 3 (2020): 139–48. https://doi.org/10.5281/zenodo.3864903.

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The use of various parts of Annona muricata (Sour Sop) in management of diseases cannot be over emphasized. This study considered the cytotoxic potential and antioxidant activity of A. muricata fruit. The crude aqueous extract of A. muricata fruit was screened for bioactive compounds and successively partitioned with n-hexane, ethyl acetate, acetone, acetic acid and methanol. The resulting fractions were evaluated for cytotoxicity using brine shrimp lethality assay (BSLA) and their antioxidant activity was determined using 2, 2-Diphenyl-1-picrylhydrazyl (DPPH) and nitric oxide (NO) scavenging

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Saini, Mamta, Saurabh Gupta, Sushma Devi, and Thakur Gurjeet Singh. "Phytochemical Screening, Chromatographic Determination and Antioxidant Profiling of Hydroethanolic Extract of Green Coffee Bean Extract." Journal of Pharmaceutical Technology, Research and Management 12, no. 1 (2024): 52–61. https://doi.org/10.15415/jprtm.2024.121004.

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Background: Green coffee beans are rich in bioactive compounds, particularly chlorogenic acids, which are known for their health benefits. Phytochemical screening and chromatographic techniques help identify and quantify these compounds. This research explores its phytochemical profile and antioxidant efficacy, contributing to its therapeutic relevance. Purpose: The current work was conducted to inspect the chromatographic and spectroscopic profile, phytochemical constituents, and antioxidant activity of the hydroethanolic extract of green coffee Arabica. Methods: The hydroethanolic extract of

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Saini, Mamta, Saurabh Gupta, Sushma Devi, and Thakur Gurjeet Singh. "Phytochemical Screening, Chromatographic Determination and Antioxidant Profiling of Hydroethanolic Extract of Green Coffee Bean Extract." Journal of Pharmaceutical Technology, Research and Management 12, no. 1 (2024): 52–61. https://doi.org/10.15415/jptrm.2024.121004.

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Background: Green coffee beans are rich in bioactive compounds, particularly chlorogenic acids, which are known for their health benefits. Phytochemical screening and chromatographic techniques help identify and quantify these compounds. This research explores its phytochemical profile and antioxidant efficacy, contributing to its therapeutic relevance. Purpose: The current work was conducted to inspect the chromatographic and spectroscopic profile, phytochemical constituents, and antioxidant activity of the hydroethanolic extract of green coffee Arabica. Methods: The hydroethanolic extract of

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SAPAROVA, G. D., B. KH KUCHAROV, M. S. DZHANDULLAEVA, A. U. ERKAEV, and B. S. ZAKIROV. "NITRIC ACID PROCESSING OF SERPENTENITES FROM THE KARAKALPAK DEPOSIT." Chemistry for Sustainable Development 32, no. 1 (2024): 82–90. http://dx.doi.org/10.15372/csd2024534.

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Physicochemical foundations for the technology of nitrogen acid processing of serpentinite from the Karakalpak deposit with the formation of pure magnesium nitrate and magnesium-containing compound fertiliser are developed. The chemical and mineralogical composition of serpentinite from the Karakalpak deposit is studied. As determined by X-ray diffraction analysis, microscopic and thermogravimetric studies, serpentinite sample contains clinoenstatite, pyrope, spinel, magnetites and other minerals with various crystal structures. Data on the extraction of serpentinite components in nitric acid

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Preedalikit, Weeraya, Chuda Chittasupho, Pimporn Leelapornpisid, Natthachai Duangnin, and Kanokwan Kiattisin. "Potential of Coffee Cherry Pulp Extract against Polycyclic Aromatic Hydrocarbons in Air Pollution Induced Inflammation and Oxidative Stress for Topical Applications." International Journal of Molecular Sciences 25, no. 17 (2024): 9416. http://dx.doi.org/10.3390/ijms25179416.

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Airborne particulate matter (PM) contains polycyclic aromatic hydrocarbons (PAHs) as primary toxic components, causing oxidative damage and being associated with various inflammatory skin pathologies such as premature aging, atopic dermatitis, and psoriasis. Coffee cherry pulp (CCS) extract, rich in chlorogenic acid, caffeine, and theophylline, has demonstrated strong antioxidant properties. However, its specific anti-inflammatory effects and ability to protect macrophages against PAH-induced inflammation remain unexplored. Thus, this study aimed to evaluate the anti-inflammatory properties of

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Awolayeofori Dokubo, Faithwin Gamaliel Obomanu, Gloria Ihuoma Ndukwe, et al. "Phytochemical composition, in vitro antioxidant and alpha amylase inhibitory properties of Celosia leptostachya." GSC Biological and Pharmaceutical Sciences 22, no. 2 (2023): 030–39. http://dx.doi.org/10.30574/gscbps.2023.22.2.0411.

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Plant based phytoconstituents of great importance in the development of drugs and treatment of several health diseases.In this study, the phytochemical constituents of ethanol extract of Celosia leptostachya leaves, invitro antioxidant and alpha amylase inhibitory properties were investigated. Gas chromatography-mass spectrum analysis was used to identify varying percentage composition of phytochemical constituents in the extract. In vitro models were used to evaluate the ability of varying concentrations of the ethanol extracts to exhibit antioxidant activity by free radical scavenging using

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Kanhiya, Mahour. "In vitro antioxidant studies of some terrestrial indigenous plants." World Journal of Biology Pharmacy and Health Sciences 15, no. 1 (2023): 004–9. https://doi.org/10.5281/zenodo.8327660.

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The alcoholic extract of the plants <em>Azadiracta indica, Argimone maxicana, Malvastrum tricuspidatum and Allium sativum </em>were investigated for their free radical scavenging activity by DPPH and Nitric oxide scavenging method. Ethanolic extract of <em>A. indica, </em>and <em>M. tricuspidatum, A.sativum </em>and A<em>. maxicana</em> showed remarkable free radical scavenging activity. It interacted significantly with free radical DPPH at concentration of 8, 16, 32, 64, 125, 250, 500 and 1000mg/ml. The IC<sub>50</sub> value was 63.71, 82.16, 64.62 and

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