Academic literature on the topic 'DPPH Scavenging Activity'

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Journal articles on the topic "DPPH Scavenging Activity"

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Liu, Ping, Yun Tao Gao, Jiao Jiao Yu, et al. "DPPH Radical Scavenging Activity of Kaempferol." Advanced Materials Research 781-784 (September 2013): 1294–97. http://dx.doi.org/10.4028/www.scientific.net/amr.781-784.1294.

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The UV-Vis absorption spectrum of kaempferol and DPPH was investigated, the optimum determination wavelength and reaction time for determining the DPPH radical scavenging activity of kaempferol was 517 nm and 30 min, respectively. Kaempferol exhibited strong DPPH radical scavenging activity with a IC50 value of 0.004349 mg·mL-1, which is smaller than that of rutin, indicating that kaempferol has a stronger antioxidant activity than rutin.
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K.Ramanji, Reddy* Dr.Chandaka Madhu Dr.J.Balaji Chandra Mouli Dr.B.Jagan Mohan Reddy Penumala Joshi Ballavarapu Sharanya. "COMPARATIVE STUDY ON PHYTOCHEMICAL SCREENING AND ANTIOXIDANT ACTIVITY ON ETHANOLIC EXTRACT OF MUSA ACUMINATE AND MANGIFERA INDICA." Indo American Journal of Pharmaceutical Sciences 04, no. 09 (2017): 2817–29. https://doi.org/10.5281/zenodo.888116.

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The present study was undertaken to investigate in vitro antioxidant activity of alcoholic extract of musa acuminata and mangifera indica . Method and methodlogy: The total Phenolic content was determined using folinciocalteau method while the total flavanoid content was determined using aluminum chloride method. In vitro antioxidant activity was evaluated using the Reducing power assay , Hydrogen peroxide scavenging assay, nitric oxide scavenging activity, and DPPH scavenging activity. Result: In the present study we have conclude that Mangifera Indica has a significant activity than Musa Acu
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Dr.ChandakaMadhu, Gunugurthi Ramya Sai Shreeja Alikette Deeti Prasanna Adiraju Usha Lalitha Gollapalli Shivapoojitha Meher Fathima. "COMPARATIVE STUDY ON PHYTOCHEMICAL SCREENING AND ANTIOXIDANT ACTIVITY ON ETHANOLIC EXTRACT OF ACTINIDIA DELICIOSA AND VITIS VINFERA." INDO AMERICAN JOURNAL OF PHARMACEUTICAL SCIENCES 05, no. 01 (2018): 735–44. https://doi.org/10.5281/zenodo.1174193.

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The present study was undertaken to investigate in vitro antioxidant activity of alcoholic extract of Actinidia Deliciosa And Vitis Vinfera. Method and methodlogy: The total Phenolic content was determined using folinciocalteau method while the total flavanoid content was determined using aluminum chloride method. In vitro antioxidant activity was evaluated using the Reducing power assay , Hydrogen peroxide scavenging assay, nitric oxide scavenging activity, and DPPH scavenging activity. Result: In the present study we have conclude that Vitis Vinfera, has a significant activity than Actinidia
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Gulcin, İlhami, and Saleh H. Alwasel. "DPPH Radical Scavenging Assay." Processes 11, no. 8 (2023): 2248. http://dx.doi.org/10.3390/pr11082248.

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Today, there is an increasing interest in antioxidants, especially to prevent the known harmful effects of free radicals in human metabolism and their deterioration during processing and storage of fatty foods. In both cases, natural-source antioxidants are preferred over synthetic antioxidants. So, there has been a parallel increase in the use of assays to estimate antioxidant efficacy in human metabolism and food systems. Today, there are many bioanalytical methods that measure the antioxidant effect. Of these, the 1,1-diphenyl-2-picrylhydrazil (DPPH) removing assay is the most putative, pop
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Alisi, Maria Alessandra, Mario Brufani, Nicola Cazzolla, et al. "DPPH radical scavenging activity of paracetamol analogues." Tetrahedron 68, no. 49 (2012): 10180–87. http://dx.doi.org/10.1016/j.tet.2012.09.098.

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Siriwardhana, Nalin, K. W. Lee, Y. J. Jeon, S. H. Kim, and J. W. Haw. "Antioxidant Activity of Hizikia fusiformis on Reactive Oxygen Species Scavenging and Lipid Peroxidation Inhibition." Food Science and Technology International 9, no. 5 (2003): 339–46. http://dx.doi.org/10.1177/1082013203039014.

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Water and organic extracts (diethyl ether, chloroform, ethyl acetate, acetone, ethanol and methanol) obtained from Hizikia fusiformis were screened on reactive oxygen species (ROS) scavenging assays (1,1-diphenyl-2-picrylhydrazyl (DPPH), superoxide anion, hydrogen peroxide and hydroxyl radical) and lipid peroxidation (inhibition of linoleic acid oxidation) inhibitory assays. Water, methanol and ethanol extracts showed significant ROS radical scavenging activities. Water extracts showed high scavenging activities on hydrogen peroxide (around 76%) and DPPH radicals (around 75%) while it presente
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She, Gai-Mei, Jin-Bo Hu, Ying-Jun Zhang, and Chong-Ren Yang. "Phenolic constituents fromRhopalocnemis phalloideswith DPPH radical scavenging activity." Pharmaceutical Biology 48, no. 1 (2009): 116–19. http://dx.doi.org/10.3109/13880200903032757.

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Ouaket, Amine, Fatiha Moughaoui, Asmae Laaraibi, Souad Hamdouch, Mohammed Berrada, and Noureddine Knouzi. "DPPH scavenging activity of some Bis-benzimidazole derivatives." Mediterranean Journal of Chemistry 8, no. 2 (2019): 103. http://dx.doi.org/10.13171/10.13171/mjc8219041101ao.

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<p>As part of our research on substituted benzimidazoles, we are interested in the synthesis of new heterocyclic molecules. This new organic molecule is a subclass of quinolines with a wide variety of biological properties. In order to affect the binding of quinoline to our bis-benzimidazole derivatives, we have chosen the "azo" bond as a means of attachment. To achieve our goal, we investigated different parameters for the reactions to determine the conditions to obtain the best results. This article discusses the antioxidant activity of our molecules using the DPPH method.</p>
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Ouaket, Amine, Fatiha Moughaoui, Asmae Laaraibi, Souad Hamdouch, Mohammed Berrada, and Noureddine Knouzi. "DPPH scavenging activity of some Bis-benzimidazole derivatives." Mediterranean Journal of Chemistry 8, no. 2 (2019): 103–7. http://dx.doi.org/10.13171/mjc8219041101ao.

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As part of our research on substituted benzimidazoles, we are interested in the synthesis of new heterocyclic molecules. This new organic molecule is a subclass of quinolines with a wide variety of biological properties. In order to affect the binding of quinoline to our bis-benzimidazole derivatives, we have chosen the "azo" bond as a means of attachment. To achieve our goal, we investigated different parameters for the reactions to determine the conditions to obtain the best results. This article discusses the antioxidant activity of our molecules using the DPPH method.
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She, Gai-Mei, Ying-Jun Zhang, and Chong-Ren Yang. "Phenolic Constituents fromBalanophora laxiflorawith DPPH Radical-Scavenging Activity." Chemistry & Biodiversity 6, no. 6 (2009): 875–80. http://dx.doi.org/10.1002/cbdv.200800139.

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Dissertations / Theses on the topic "DPPH Scavenging Activity"

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葉書吟. "Chemical Polymorphism and DPPH Radical Scavenging Activity of Leaf Essential Oils of Indigenous Cinnamon." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/16693986653912377728.

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碩士<br>中國文化大學<br>生活應用科學研究所<br>93<br>Abstract Leaves of 98 Cinnamomum osmophloeum plants were grown in Hwa —Lin Forest Experimental Station of Chinese Culture University were picked, the 98 plants were collected from 13 various locations in Taiwan, leaf essential oils of different plants were extracted and their constituents were analyzed and identified by retention index of gas chromatography (GC) and gas chromatography-mass (GC-MS). The yields of essential oils extracted were between 0.09 and 2.65%, the average yield was 0.45%.A total of 51 components were identified from the oil
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Hsu, Wei-Chieh, and 許為捷. "Angiotensin Converting Enzyme Inhibitory Activity and the 2,2-Diphenyl-1-picrylhydrazyl (DPPH) Radical-Scavenging Effect of Various Koji Mold-fermented Black Soybeans." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/03795707061477793224.

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碩士<br>國立臺灣大學<br>食品科技研究所<br>99<br>In this study, black soybeans were fermented with Aspergillus oryzae BCRC 30222, A. sojae BCRC 30103 or Monascus pilosus BCRC 31526 at 30oC and 95% relative humidity for 6 days. The Angiotensin converting enzyme (ACE) inhibitory effect and 2,2-diphenyl -1-picrylhydrazyl (DPPH) radical-scavenging effect exerted by the various fermented black soybeans were then investigated. Besides, the degree of protein hydrolysis, total phenolics, flavonoids and anthocyanin contents of the fermented black soybeans were examined.Results revealed that fermentation, regardless of
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Book chapters on the topic "DPPH Scavenging Activity"

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Nasir, Nor Atikah Husna Ahmad, Nurul Atikah Liana Roslly, Nurul Miza Rosli, and Zainab Razali. "Phytochemical Screening and Potential DPPH Radical Scavenging Activity of Banana Peel Extract." In Charting the Sustainable Future of ASEAN in Science and Technology. Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-3434-8_22.

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Nenadis, Nikolaos, and Maria Z. Tsimidou. "DPPH (2,2-di(4-tert-octylphenyl)-1-picrylhydrazyl) radical scavenging mixed-mode colorimetric assay(s)." In Measurement of Antioxidant Activity & Capacity. John Wiley & Sons, Ltd, 2017. http://dx.doi.org/10.1002/9781119135388.ch8.

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Londonkar, Ramesh, and Maithilee Kesralikar. "In Vitro Anticancer Screening of Methanolic Extract of Stachytarpheta Mutabilis." In Proceedings of the Conference BioSangam 2022: Emerging Trends in Biotechnology (BIOSANGAM 2022). Atlantis Press International BV, 2022. http://dx.doi.org/10.2991/978-94-6463-020-6_19.

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AbstractIn therapeutic plants, phytochemicals are found in abundance. A family of verbena known as vervain (verbenaceae) consists of over 100 genera and nearly 2600 species. Among the Verbenaceae family is Stachytarpheta, a green perennial herb. The species is being examined in this study for its phytochemical, antioxidant, and anti-inflammatory properties. Stachytarpheta mutabilis methanol extracts were studied for their phytochemical screening, antimicrobial, anti-inflammatory, and anticancerous effects in the current study. Phytochemical study revealed the presence of alkaloids, flavonoids,
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Chen, Yong, Nanqun Zhu, and Chi-Tang Ho. "Identification of Antioxidants from Du-Zhong (Eucommia ulmoidesOliver) Directed by DPPH Free Radical-Scavenging Activity." In ACS Symposium Series. American Chemical Society, 2003. http://dx.doi.org/10.1021/bk-2003-0859.ch016.

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Vasishta, P. A., K. Harini, and S. Rajeshkumar. "Free Radical Scavenging Activity of Acacia and Stevia and Stevia Mediated Selenium Nanoparticles using DPPH and H2O2 Assay." In Advances in Sports Science and Technology. CRC Press, 2025. https://doi.org/10.1201/9781003616283-176.

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Zhang, Mengling, Xuewen Bao, Xin Huang, Haigang Li, Yanhui Li, and Meihua Bao. "Optimization of the Extraction Strategy for Polyphenols from Pieris Japonica and Evaluation of Its Antioxidant Activity." In Studies in Health Technology and Informatics. IOS Press, 2023. http://dx.doi.org/10.3233/shti230819.

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Pieris Japonica, belonging to the Rhododendron family, is known for its anti-insect and analgesic properties. Despite previous research, the components and antioxidant activity of Pieris Japonica extract remain unclear. This study aims to identify the optimal extraction process for Pieris Japonica, determine its components, and evaluate its antioxidant capacity. An L9 (34) orthogonal method was employed to optimize the Pieris Japonica extraction process, with the polyphenol content serving as the extraction efficiency index. The extracted components were identified by high-performance liquid c
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Vergun, Olena. "DPPH Free Radical Scavenging Activity of Some Fabaceae Lindl. Species." In Agrobiodiversity for Improving Nutrition, Health and Life Quality. Slovak University of Agriculture in Nitra, Slovakia, 2020. http://dx.doi.org/10.15414/agrobiodiversity.2020.2585-8246.124-133.

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O. Yusuf, Habeeb, and Ruth T.S. Ofongo. "Antioxidant Fortification of Eggs through Nutrition of Laying Hens Administered Herbs /Medicinal Plants." In Medicinal Plants - Chemical, Biochemical, and Pharmacological Approaches [Working Title]. IntechOpen, 2023. http://dx.doi.org/10.5772/intechopen.111658.

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The sole aim of raising pullet hens in the poultry industry is to produce eggs for human consumption in a large scale when they commence laying. Eggs are important dietary components to humans both adult and children and is classified as complete protein. However, certain quality of eggs produced by laying hens is further influenced by the diet consumed which in turn is determined by the quality of the feed ingredients making up the diet. Antibiotic residue in eggs and antimicrobial resistance are few concerns to consumers of poultry products. The current era of limiting antimicrobial utilizat
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Ayembilla, Jacob Apibilla, Phyllis Naa Yarley Otu, Eunice A. Dotse, et al. "Antioxidant and Anticancer Potential of Natural Cocoa Extract." In Technological Innovation Driving Sustainable Entrepreneurial Growth in Developing Nations. IGI Global, 2023. http://dx.doi.org/10.4018/978-1-6684-9843-9.ch007.

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The aim of this study was to investigate antioxidant and anticancer potentials of natural cocoa extracts. Antioxidant properties of the extracts were evaluated by DPPH assay, total phenolic content by Folin-Ciocalteau and reduced glutathione content by O-phthalaldehyde assays. Antiproliferative activity was also evaluated on leukaemia and prostate cancer cell lines using MTT assay. The hydroethanolic extracts of cocoa roots and beans and aqueous cocoa leaves showed high total antioxidant activities with the root extract having the strongest scavenging effect on DPPH and the highest total pheno
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Lobo, Patrícia Teixeira Damasceno, Elisa Teshima, and Sandra Aparecida de Assis. "Antioxidant and prebiotic activity of (1→3)-β-D-glucan obtained from Rhodotorula mucilaginosa." In UNITING KNOWLEDGE INTEGRATED SCIENTIFIC RESEARCH FOR GLOBAL DEVELOPMENT. Seven Editora, 2023. http://dx.doi.org/10.56238/uniknowindevolp-053.

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The β-Glucans has high biotechnological potential application in several industrial sectors. Then, the antioxidant and prebiotic activity of (1→3)-β-D-glucan obtained from the cell wall of R. Mucilaginosa yeast was evaluated. The strains tested Bifidobacterium Lactis and Bifidobacterium longum showed a comparable result with the commercially inulin. The digestibility of glucan was investigated in vitro by exposing them to artificial human gastric juice. The results show that not occurred hydrolysis of (1→3)-β-D-glucan under the studied conditions and the glucan remain undigested in 100%. Antio
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Conference papers on the topic "DPPH Scavenging Activity"

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Sukemi, Yadi Yasir, Swandari Paramita, and Enos Tangke Arung. "DPPH-Scavenging Activity of Propolis of Tetragonula iridipennis from East Kalimantan." In Joint Symposium on Tropical Studies (JSTS-19). Atlantis Press, 2021. http://dx.doi.org/10.2991/absr.k.210408.054.

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Bi, Yongguang, Zhang Yanfen, and Kong Fansheng. "Experimental Study on Scavenging DPPH Free Radical Activity of Litsea Cubeba Oil." In 2017 7th International Conference on Mechatronics, Computer and Education Informationization (MCEI 2017). Atlantis Press, 2017. http://dx.doi.org/10.2991/mcei-17.2017.202.

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Vucane, Sanita, Martins Sabovics, Lauris Leitans, and Ingmars Cinkmanis. "Smartphone-based colorimetric determination of DPPH free radical scavenging activity in vegetable oils." In Research for Rural Development 2020. Latvia University of Life Sciences and Technologies, 2020. http://dx.doi.org/10.22616/rrd.26.2020.016.

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Free radicals can rapidly and irreversibly oxidize various structures, including unsaturated fatty acids in vegetable oils, which affect the sensory properties. Spectrophotometry is the most widely used method for the determination of free radical scavenging activity (RSA) using 2,2-diphenyl-1-picrylhydrazyl (DPPH). Barrier to the further use of classical analytical methods to analyze biologically active compounds in foodstuffs is that equipment requires high cost and has limited mobility. One of solutions is to replace classical methods, such as spectroscopy, with smartphonebased colorimetry.
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Akbar, Himyan, Salma Habib, Mohammed Mahroof Tahir, and Lakshmaiah Sreerama. "Synthesis and Characterization of Vanadium (IV)-Flavonoid Complexes and its Antioxidant ability toward Superoxide and Radical Scavenging." In Qatar University Annual Research Forum & Exhibition. Qatar University Press, 2020. http://dx.doi.org/10.29117/quarfe.2020.0109.

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In this project Vanadium complex -Vanadium (IV) - flavone was synthesized using vanadium (IV) acetylacetonate (VO(acac)2) complex and 3-hydroxy-6-methyl flavone ligand. The complex stability was checked using FTIR and UV-vis spectroscopies. Peackes around 990 cm-1 conforms the formation of (V=O) in the complex, as well as (V-O) around 790 cm-1. In UV-Vis spectrum peak around 400-450 nm was noticed, which conforms the formation of the vanadium complex that correspond to the ligand to metal charge transfer (LMCT) transition. The radical scavenging abilities of vanadium complex were investigated
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Dekanski, Dragana, Aleksandar Raskovic, Nikola Martić, Andrea Pirkovic, and Aleksandra Jovanović. "RADICAL SCAVENGING POTENTIAL OF DIFFERENT TYPES OF LIPOSOME PARTICLES WITH ENCAPSULATED CAROB EXTRACT." In 8th Workshop Food and Drug Safety and Quality. Vinča Institute of Nuclear Sciences - National Institute of the Republic of Serbia, 2024. http://dx.doi.org/10.46793/8fdsq.pa3dd.

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Carob pulp extract contains bioactive phenolic compounds, making it a suitable functional food ingredient. This study aimed to investigate the radical scavenging potential of pure carob extract and different types of carob extract-loaded liposomes (multilamellar, UV-irradiated, and sonicated unilamellar vesicles). Their antioxidant capacity was measured by employing DPPH and ABTS assays. The encapsulation of carob extract within liposomes as well as UV irradiation and sonication did not cause a decrease in the anti-DPPH activity, however, the ABTS radical scavenging potential of pure extract w
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"Determination of Antioxidant Property, Total Phenolics Content, and α-Glucosidase Inhibitory Activity of Different Solvent Extracts of Defatted and Non-Defatted Peanut Skins". У 4th International Conference on Biological & Health Sciences (CIC-BIOHS’2022). Cihan University, 2022. http://dx.doi.org/10.24086/biohs2022/paper.781.

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Peanut skins are by-product with little economic value. The effect of different solvents, on the total phenolic content (TPC), antioxidant property and in vitro antidiabetic activity of defatted and non-defatted peanut skins was determined. TPC was estimated using Folin-Ciocalteau reagent. Antioxidant property was evaluated using ferric reducing antioxidant power (FRAP) and 2, 2-diphenyl-1- picrylhydrazyl (DPPH) radical scavenging capacity methods, α-glucosidase inhibition was evaluated using 4- nitrophenyl α-D-glucopyranoside (pNPG) method. Peanut skin of the defatted extracted with ethanol h
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"Fabrication, Characterization and Studies on DPPH Scavenging Activity of Silver Nanoparticles by Using Rumex hastatus." In Microscience Microscopy Congress 2023 incorporating EMAG 2023. Royal Microscopical Society, 2023. http://dx.doi.org/10.22443/rms.mmc2023.126.

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Janić, Marijana, Aleksandar Krstić, Ana Valenta Šobot, et al. "DIFFERENCE IN PHYTOCHEMICAL COMPOSITION AND ANTIOXIDANT ACTIVITY SCREENING OF TWO METHANOLIC SAGE EXTRACTS." In 8th Workshop Food and Drug Safety and Qualit. Vinča Institute of Nuclear Sciences - National Institute of the Republic of Serbia, 2024. http://dx.doi.org/10.46793/8fdsq.pb3mj.

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Sage has been used in traditional medicine to prevent and treat many health problems. This study aimed to determine and compare the phytochemical composition and antioxidative activity of sage leaf extracts obtained with 50% methanol (50MSE) and 80% methanol (80MSE). We determined the total phenolic content (TPC), total tannin content (TTC), and total flavonoid content (TFC) in extracts. Terpenoids were identified using gas chromatography-mass spectrometry (GC–MS), and the radical scavenging capacity of extracts was measured using DPPH assay. TPC was higher in 80MSE, TTC was higher in 50MSE, a
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Dumbrava, Delia-Gabriela, Cristian-Alin Costescu, Diana-Nicoleta Raba, Viorica-Mirela Popa, and Camelia Moldovan. "ANTIOXIDANT, NUTRITIONAL AND SENSORY CHARACTERISTICS OF TWO INNOVATIVE TYPES OF GLUTEN-FREE BREAD." In 22nd SGEM International Multidisciplinary Scientific GeoConference 2022. STEF92 Technology, 2022. http://dx.doi.org/10.5593/sgem2022v/6.2/s25.09.

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In recent years, because the gluten intolerance has become a worldwide problem, there were a sharp increase in the consumers demand for gluten-free bakery products that to be attractive, both in terms of sensory and nutritional value. This work had as a first goal obtaining of two innovative gluten-free bread types, one from almond flour, brown rice flour and psyllium bran (P1), and the second from buckwheat flour and psyllium bran (P2). A second aim of the paper was to determine total polyphenols (FolinCiocalteu method) and antioxidant activity (DPPH free radical assay) both for raw materials
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Muškinja, Jovana M., Jelena S. Katanić Stanković, and Zoran R. Ratković. "SYNTHESIS AND ANTIOXIDANT ACTIVITY OF SOME NEW SULFONAMIDE DERIVATIVES." In 1st INTERNATIONAL Conference on Chemo and BioInformatics. Institute for Information Technologies, University of Kragujevac, 2021. http://dx.doi.org/10.46793/iccbi21.351m.

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Sulfonamide derivatives are a very important class of compounds with pronounced biological activities and, for this reason, they have very useful pharmaceutical applications. They are the basis of several groups of drugs and are known as sulfa-drugs. From this point of view, the present study focuses on the synthesis of some novel structural hybrids incorporating two very important groups, sulfonamide, and pyrazoline. The new sulfonamide-based pyrazolines were synthesized in very good yields. The structures of the sulfonamide compounds were confirmed by IR and NMR methods. Synthesized compound
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Reports on the topic "DPPH Scavenging Activity"

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ภู่ทอง, ทรงจันทร์, กิตตินันท์ โกมลภิส, อุมาพร พิมพิทักษ์ та อณุมาศ บัวเขียว. ฤทธ์ต้านอนุมูลอิสระและยับยั้งการเจริญฃองเซลล์มะเร็งจากสารสกัดใบชะอม. จุฬาลงกรณ์มหาวิทยาลัย, 2018. https://doi.org/10.58837/chula.res.2018.103.

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สารต้านอนุมูลอิสระจากธรรมชาติที่มีในพืชผักที่บริโภคประจำวันได้รับความสนใจมากเพราะมีความปลอดภัยในการใช้มากกว่าสารต้านอนุมูลอิสระสังเคราะห์ จากรายงานต่างๆ พบว่าสารพฤกษเคมี โดยเฉพาะอย่างยิ่งสารประกอบฟินอลิกบางชนิดมีฤทธิ์ในการต้านอนุมูลอิสระ จากการวิเคราะห์ผักพึ้นบ้านที่นิยมบริโภค 20 ชนิดพบว่า ชะอม (Acacia pennata) มีปริมาณสารประกอบฟินอลิกสูงมากที่สุดถึง 45.3 ไมโครกรัมกรดแกลลิกต่อมิลลิกรัมของสารสกัดแห้ง ดังนั้นในงานวิจัยนี้จึงทำการทดสอบความสามารถในการต้านอนุมูลอิสระของสารสกัดหยาบจากใบชะอมที่เป็นใบสด (F) และใบแห้ง (D) ที่ได้จากการสกัดด้วยน้ำ (H) หรือ 95% เอทานอล (E) จากการทดสอบฤทธิ์ต้านอนุมูลอิสระด
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Siripatrawan, Ubonratana. Active Chitosan-Based Film with Antimicrobial Property for Food Packaging Application. Chulalongkorn University, 2010. https://doi.org/10.58837/chula.res.2010.22.

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This research was aimed to develop an active film from chitosan film incorporated with green tea extract to enhance antioxidant and antimicrobial properties in order to be used for food shelf life extension. The experiments were divided into 3 parts. Firstly, chitosan-based film preparation and modification were determined. The results suggested that the optimum chitosan films could be prepared from 2% chitosan in 1% acetic acid. However, the chitosan film was brittle and had low flexibility. Mechanical property of chitosan film was modified by adding different concentrations of glycerol, as a
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