Relevant bibliographies by topics / DPPH method

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Book chapters
  4. Conference papers
  5. Reports

Academic literature on the topic 'DPPH method'

Author: Grafiati
Published: 3 June 2025
Last updated: 20 July 2025

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Journal articles on the topic "DPPH method"

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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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Rodríguez Cid de León, Gisela I., Martin Gómez Hernández, Adriana M. Domínguez y Ramírez, Jose R. Medina López, Georgina Alarcón-Ángeles, and Adriana Morales Pérez. "Adaptation of DPPH Method for Antioxidant Determination." ECS Transactions 36, no. 1 (2019): 401–11. http://dx.doi.org/10.1149/1.3660634.

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Dewi Ranggaini, Monica, Johni Halim, and Michelle Aurelia Tjoe. "Aktivitas Antioksidan dengan Metode DPPH dan ABTS Terhadap Ekstrak Etanol Daun Amaranthus hybridus L." Jurnal Kedokteran Gigi Terpadu 6, no. 1 (2024): 65–69. http://dx.doi.org/10.25105/jkgt.v6i1.20891.

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Background: Cancer, a degenerative disease, arises from free radicals in the body, which can be counteracted by antioxidants. Amaranthus hybridus L., a vegetable rich in antioxidant compounds like flavonoids, requires extraction to harness these compounds. This extraction uses the maceration technique with 70% ethanol. Antioxidant activity is tested using methods like DPPH and ABTS assays, with the IC50 value indicating effectiveness. Purpose: To determine the difference in antioxidant activity of A. hybridus L. leaves ethanol extract with DPPH and ABTS methods. Method: Laboratory experimental
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Nikiforova, A. N., A. V. Samoilov, Yu V. Nikolaeva, and E. M. Fedorova. "STUDY OF THE ANTIOXIDANT PROPERTIES OF PLANT EXTRACTS USING THE DPPH METHOD." AGRO-INDUSTRIAL TECHNOLOGIES OF THE CENTRAL RUSSIA 22, no. 4 (2021): 22–30. http://dx.doi.org/10.24888/2541-7835-2021-22-22-30.

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In modern food products, food additives of natural origin are increasingly used. The search for ef-fective antioxidants of plant origin is a widely studied topic at the present time. The study of this issue makes it possible to introduce the latest solutions in the fight against lipid oxidation in food products. The aim of this scientific work was to evaluate the radical-binding capacity of plant ex-tracts with different contents of active substances. As a result of a series of experiments using the DPPH method, the antioxidant properties of 14 samples were investigated. It was found that the
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Kedare, Sagar B., and R. P. Singh. "Genesis and development of DPPH method of antioxidant assay." Journal of Food Science and Technology 48, no. 4 (2011): 412–22. http://dx.doi.org/10.1007/s13197-011-0251-1.

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Dewi, I. K., S. L. Ramayani, D. Yuliastuti, et al. "Antioxidant activity of corn (Zea mays L.) plant parts by 2,2-diphenyl-1- picrylhydrazyl (DPPH) method." Food Research 9, no. 4 (2025): 60–70. https://doi.org/10.26656/fr.2017.9(4).351.

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Antioxidants are substances that inhibit oxidation. Plants, especially fruits and vegetables, are good sources of natural antioxidants. Corn (Zea mays L.) is one of the plants that contains antioxidants. Various studies have shown that most parts of the corn plant contain antioxidant compounds. The parts of corn that contain antioxidant compounds are the cob, ear, hair, leaves and seeds. Many methods have been developed for the analysis of antioxidants in corn (Zea mays L.) plants consisting of seeds, hairs, leaves and cobs. It is known that the most widely used antioxidant analysis method on
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Fidrianny, Irda, Dhella Fitrani, Siti Kusmardiyani, Defri Rizaldy, and Komar Ruslan. "IN VITRO ANTIOXIDANT AND PHYTOCHEMICAL ANALYSIS OF DIFFERENT PARTS OF SIMANA LAGI APPLE ([MALUS DOMESTICA BORKH.] “SIMANA LAGI”) GROWN IN EAST JAVA-INDONESIA." Asian Journal of Pharmaceutical and Clinical Research 10, no. 11 (2017): 41. http://dx.doi.org/10.22159/ajpcr.2017.v10i11.20649.

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Objectives: The goals of this research were to observe antioxidant properties from different parts of Simana lagi apple ([Malus domestica Borkh.] “Simana lagi”) using two antioxidant testing methods which were 2,2-diphenyl-1-picrylhydrazyl (DPPH) and 2,2’-azino-bis(3-ethylbenzthiazoline-6- sulfonic acid (ABTS) and correlation of total phenolic and flavonoid content with their inhibitory concentration 50 (IC50) of DPPH and IC50 of ABTS.Methods: Each sample was extracted by reflux using different polarity solvents. The extracts were evaporated using rotary evaporator. Antioxidant activities were
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Arsul, Muhammad Ikhlas, Nurfajri Syamsi, Nadila Putri, Nur Afiah Alfrianti Nur, Mukhriani Mukhriani, and Nursalam Hamzah. "Total phenolic, flavonoid, and antioxidant capacity of bajakah (Spatholobus littoralis Hassk)." Current Research on Biosciences and Biotechnology 4, no. 1 (2022): 242–45. http://dx.doi.org/10.5614/crbb.2022.4.1/vrj3x4lf.

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The bajakah (Spatholobus littoralis Hassk.) is one of the typical plants from Kalimantan Island, which has potential as a drug, one of which using as an antioxidant is due to the secondary metabolites contained therein. The aims of the research are to estimate the total phenolic content, total flavonoid content, and antioxidant capacity of the bajakah by different methods. Extraction was carried out by reflux method using a solvent gradient of n-hexane, ethyl acetate, and ethanol 96%. Phenols and flavonoid content were calculated using spectroscopy. Antioxidant capacity was measured against as
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Insanu, Muhamad, Aliya Azkia Zahra, Nurma Sabila, et al. "Phytochemical and Antioxidant Profile: Cucumber Pulp and Leaves Extracts." Open Access Macedonian Journal of Medical Sciences 10, A (2022): 616–22. http://dx.doi.org/10.3889/oamjms.2022.8337.

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BACKGROUND: Many vegetables and fruits have been shown to be sources of antioxidant such as lemons, apples, cabbage, mangoes, beets, and guavas
 
 AIM: This research aimed to determine antioxidant activity of Cucumis sativus L. (cucumber) pulp and leaves extracts using DPPH and CUPRAC methods, total phenolic content (TPC), total flavonoid content (TFC), correlation of TPC and TFC on antioxidant activity, correlation between the two methods, identification of marker, and total marker content.
 
 METHODS: Antioxidant activity was examined by determining IC50 and AAI of DPPH a
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Fidrianny, Irda, Veliana Virna, and Muhamad Insanu. "ANTIOXIDANT POTENTIAL OF DIFFERENT PARTS OF BOGOR PINEAPPLE (ANANAS COMOSUS [L.] MERR. VAR. QUEEN) CULTIVATED IN WEST JAVA-INDONESIA." Asian Journal of Pharmaceutical and Clinical Research 11, no. 1 (2018): 129. http://dx.doi.org/10.22159/ajpcr.2017.v11i1.22022.

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Objective: The aims of this research were to observe antioxidant activities from different parts of Bogor pineapple (Ananas comosus [L.] Merr. Var. Queen) using two antioxidant testing methods which were 2,2-diphenyl-1-picrylhydrazyl (DPPH) and ferric reducing antioxidant power (FRAP) and correlation of total phenolic and flavonoid contents with their inhibitory concentration 50% (IC50) of DPPH and exhibitory concentration 50% (EC50) of FRAP.Methods: Each sample was extracted by reflux using different polarity solvents. Antioxidant activities were determined using DPPH and FRAP assays, total p
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Dissertations / Theses on the topic "DPPH method"

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Marková, Leona. "Srovnání některých nových odrůd rybízů z hlediska vybraných obsahových látek." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2013. http://www.nusl.cz/ntk/nusl-216985.

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Diploma thesis deals with currant (Ribes L.) and substances which currants contain especially anthocyanin pigments, vitamin C and antioxidants. In theoretical part is described basic characteristic about plant, including varieties of currants. The following chapters include a list of active substances which the fruit contains and also the list of some possibilities of processing and utilization of currant especially in the food industry. Big attention is given to anthocyanins, their characteristics, utilization in the food industry, factors that affect their stability and especially methods of
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Zídková, Hana. "Analýza mezery DPH." Doctoral thesis, Vysoká škola ekonomická v Praze, 2013. http://www.nusl.cz/ntk/nusl-196929.

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The dissertation thesis describes the methods of calculation of the VAT gap. VAT gap is the difference between the theoretical VAT liability in the whole economy and the accrued VAT receipts. It is expressed in relative terms to the theoretical VAT liability and it approximates the amount of the VAT evasion. The VAT gap in the Czech Republic in the years 2002 to 2010 ranges in average from 16 to 17 %. It is steadily increasing from 11 % to 26 % during the last 5 years of the relevant period. Furthermore, the thesis also analyses the determinants of the VAT gap in the EU member states in the ye
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Šťavíková, Lenka. "Charakterizace vlastností extraktů z hroznových bobulí pomocí moderních analytických metod." Doctoral thesis, Vysoké učení technické v Brně. Fakulta chemická, 2010. http://www.nusl.cz/ntk/nusl-233304.

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The determination of anthocyanins in red grapes and wines has been of increasing interest in the last years, as they play an important role in colour quality of red wines revealing also many human health beneficial effects. They contribute e.g. to the reduction of coronary heart disease, but exhibit also antimutagenic, anti-inflammatory, anti-carcinogenic and antioxidant properties. In this doctoral thesis, the complex study of grape skin alcoholic and water extracts, prepared from Alibernet and St. Laurent wine grape varieties is presented. Extracts were prepared from three different amounts
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Mothapo, Mmaphefo Patricia. "Comparative evaluation of three fundamentally different analytical methods antioxidant activity determination with reference to bush tea (anthrixia phylicoides." Thesis, University of Limpopo, 2016. http://hdl.handle.net/10386/1517.

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Thesis (M.Sc. (Chemistry)) -- University of Limpopo, 2016<br>In this study, antioxidant activity methodologies were evaluated in terms of analytical performances. The total antioxidant activity from Athrixia phylicoides leaves (Bush tea) determined using 2,2-diphenyl-1-picrylhydrazyl radical scavenging (DPPH•) method, cupric ion reducing power (CUPRAC) method and cyclic voltammetry (CV). Folin-Ciocalteu method was used to quantify total phenolic content (TPC) in Athrixia phylicoides leaves. The influence of chemical and physical parameters on the total phenolic content and antioxidant activity
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Schmidt, Yvonne [Verfasser]. "Die o-DPPB-dirigierte allylische Substitution – Eine vielseitig anwendbare Methode in der asymmetrischen Totalsynthese und in der diversitätsorientierten Synthese / Yvonne Schmidt." München : Verlag Dr. Hut, 2011. http://d-nb.info/1011441446/34.

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Guasch, Pàmies Laura. "Identification of natural products as antidiabetic agents using computer-aided drug design methods." Doctoral thesis, Universitat Rovira i Virgili, 2011. http://hdl.handle.net/10803/111094.

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Els productes naturals derivats de plantes són una font abundant de compostos biològicament actius, molts dels quals han servit de base pel desenvolupament de productes nutracèutics i farmacèutics. El disseny de fàrmacs assistit per ordinador juga un paper essencial en la identificació de productes naturals bioactius, reduint els costos i esforços experimentals. La diabetis mellitus tipus 2 és considerada com "l’epidèmia del segle 21" i, en conseqüència, és un dels principals reptes en el descobriment de fàrmacs en l'actualitat. Per tant, aquesta tesi doctoral es centra en la identificació de
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Book chapters on the topic "DPPH method"

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Sugawara, Kazushi, Terutsugu Oyama, Masato Murakami, Kazuhito Yasuike, Yuh Shiohara, and Shoji Tanaka. "ESR of DPPH as a Probe of Magnetic Flux Fluctuations on the Surface of YBaCuO Made by the MPMG Method." In Advances in Superconductivity III. Springer Japan, 1991. http://dx.doi.org/10.1007/978-4-431-68141-0_128.

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Adnan, Miftahul, Diana Nur Afifah, Gemala Anjani, Hardhono Susanto, Etika Ratna Noer, and Sumardi Widodo. "Formula Optimization and Antioxidant Activity Test of Combination Drink of Ginger (Zingiber Officinale var. rosc) and Lemongrass (Cymbopogon citratus): DPPH Method." In Advances in Health Sciences Research. Atlantis Press International BV, 2024. http://dx.doi.org/10.2991/978-94-6463-550-8_14.

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Rubab, Momna, Ramachandran Chelliah, and Deog-Hwan Oh. "Screening for Antioxidant Activity: Diphenylpicrylhydrazine (DPPH) Assay." In Methods in Actinobacteriology. Springer US, 2022. http://dx.doi.org/10.1007/978-1-0716-1728-1_61.

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He, Wei. "DPH Probe Method for Liposome-Membrane Fluidity Determination." In Methods in Molecular Biology. Springer US, 2023. http://dx.doi.org/10.1007/978-1-0716-2954-3_21.

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Raposo, Maria, Andreia A. Duarte, Paulo J. Gomes, Paulo A. Ribeiro, Marli L. Moraes, and Roland Steitz. "Structural Features of a DPPG Liposome Layer Adsorbed on a Rough Surface." In Computational Intelligence Methods for Bioinformatics and Biostatistics. Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-14160-8_14.

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Valente, A., C. Couto, and J. H. Correia. "On-Chip Integrated Silicon Bulk-Micromachined Soil Moisture Sensor Based on the DPHP Method." In Transducers ’01 Eurosensors XV. Springer Berlin Heidelberg, 2001. http://dx.doi.org/10.1007/978-3-642-59497-7_75.

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Pires, Filipa, Gonçalo Magalhães-Mota, Paulo António Ribeiro, and Maria Raposo. "Effect of UV Radiation on DPPG and DMPC Liposomes in Presence of Catechin Molecules." In Computational Intelligence Methods for Bioinformatics and Biostatistics. Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-67834-4_14.

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Bertone, Vittorio, Eleonora Tarantola, and Isabel Freitas. "Enzyme-Histochemistry Technique for Visualizing the Dipeptidyl-Peptidase IV (DPP-IV) Activity in the Liver Biliary Tree." In Methods in Molecular Biology. Springer New York, 2017. http://dx.doi.org/10.1007/978-1-4939-6788-9_3.

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Aniley, Almaw Ayele, S. K. Naveen Kumar, and A. Akshaya Kumar. "Dual Probe Heat Pulse (DPHP) Method Soil Moisture Sensor Using Advanced Materials-Based Thermistor and Fluorine Doped Tin Oxide (FTO) Thin Film Electric Heater." In Nanostructured Smart Materials. Apple Academic Press, 2021. http://dx.doi.org/10.1201/9781003130468-16.

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Serge, Ngangoum Eric, Mezajoug Kenfack Laurette Blandine, Sanjit Kumar, Mookambeswaran Vijayalakshmi, and Tchiégang Clergé. "Functional and Antioxidant Properties of Protein Hydrolysates From Ricinodendron Heudelotii(Bail.) Flours From Cameroon." In Research Advancements in Pharmaceutical, Nutritional, and Industrial Enzymology. IGI Global, 2018. http://dx.doi.org/10.4018/978-1-5225-5237-6.ch014.

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Ricinodendron heudelotii kernels were defatted and used as substrate to produce protein hydrolysatesusing papain (PHP), trypsin (PHT), proteases from Abrus precatorius (PHAp)and B. enneandra(PHBe). The degree of hydrolysis (DH), antioxidant (DPPH method), and functional properties of hydrolysates were performed. The DH value, whatever hydrolysis time, was highest with PHP. The water holding capacity decreased with the hydrolysis time from 21.50 ± 0.44% to 5.20 ± 0.07%. After 6h of hydrolysis, PHAp exhibited maximum solubility value (70.17 ± 2.15%) while PHBe had lower solubility value (18.43 ± 0.12%). The highest value of emulsifying activity index was found at pH 9 with 0.25% (w/v) hydrolysate concentration. Within the range of pH used (4-9), the best foam capacity and foam stability were exhibited by PHBe. PHP, PHAp, and PHT inhibited DPPH radical at 83.30 ± 0.46, 75.07 ± 0.15, and 56.78 ± 0.40%, respectively, at 6h of hydrolysis.
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Conference papers on the topic "DPPH method"

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Popovici, Lucia-Florina, and Simona Oancea. "COMPARATIVE STUDY ON PHENOLICS, FLAVONOIDS, TANNINS AND ANTIOXIDANT PROPERTIES OF CALENDULA OFFICINALIS EXTRACTS OBTAINED BY DIFFERENT EXTRACTION TECHNIQUES." In SGEM International Multidisciplinary Scientific GeoConference 24. STEF92 Technology, 2024. https://doi.org/10.5593/sgem2024/6.1/s25.21.

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The aim of this study was to evaluate the influence of several extraction methods on the content of bioactive compounds of polyphenolic structure and antioxidant properties of petals from marigold flowers (Calendula officinalis). Ethanolic extracts prepared using maceration, turbo-extraction and bead-beating techniques were investigated for total phenolics, flavonoids and tannins, and antioxidant activities as measured by FRAP and DPPH assays, as well. The results showed that the highest phenolic content (1316.367 � 4.316 mg GAE/100 g DW) and antioxidant activity by FRAP (505.755 � 4.623 mg as
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Oishi, Satoru, Shihoko Ishihara, Tomohide Takeyama, Shinya Tachibana, Shiori Takasaki, and Takashi Ushijima. "Disaster prevention digital twin for damage estimation methods in Society 5.0." In IABSE Symposium, Tokyo 2025: Environmentally Friendly Technologies and Structures: Focusing on Sustainable Approaches. International Association for Bridge and Structural Engineering (IABSE), 2025. https://doi.org/10.2749/tokyo.2025.0921.

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&lt;p&gt;This study compares two damage estimation methods to establish a technique for quickly and accurately estimating damage from the Nankai Trough earthquake scenarios. In the first method, we estimated damage by regression using the total stock and the predicted seismic intensity scale distribution. This approach comes from the previous study. The second method used the maximum interstitial deformation angle per building to estimate damage by physics-based simulation. We applied an urban building and geotechnical model of Kobe City, for which we automatically created BIM using DPP. Subse
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Fitriana, Adita Silvia, and Sri Royani. "Identifying Antioxidant Activities of Guava Fruit Using DPPH Method." In 1st International Conference on Community Health (ICCH 2019). Atlantis Press, 2020. http://dx.doi.org/10.2991/ahsr.k.200204.027.

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Matić, Jovana, Nevena Petrović, and Marijana Kosanić. "ANTIMICROBIAL AND ANTIOXIDANT PROPERTIES OF THE METHANOLIC EXTRACT OF THE EDIBLE MUSHROOM XEROCOMUS SUBTOMENTOSUS." In 3rd International Symposium on Biotechnology. University of Kragujevac, Faculty of Agronomy in Čačak, 2025. https://doi.org/10.46793/sbt30.72jm.

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This study investigates the antimicrobial and antioxidant potential of methanolic extract of mushroom Xerocomus subtomentosus. The antimicrobial potential was assessed by microdilution method (MIC values ranged from 5 to 40 mg/mL). Antioxidant activity was evaluated using DPPH, ABTS and reducing power assays, alongside total phenol and flavonoid content measurements. The extract demonstrated strong antioxidant potential (IC50: 80.842 μg/mL for DPPH, 6.587 μg/mL for ABTS, while absorbance for reducing power ranged from 0.380 to 1.168). Total phenolics and flavonoids were 40.439 μg PE/mg and 3.8
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Darmajana, Doddy A., Firman Hadiansyah, and Dewi Desnilasari. "The antioxidant activity test by using DPPH method from the white tea using different solvents." In PROCEEDINGS OF THE 3RD INTERNATIONAL SYMPOSIUM ON APPLIED CHEMISTRY 2017. Author(s), 2017. http://dx.doi.org/10.1063/1.5011866.

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Puspitasari, Lia, Made Dira, and Ni Dari. "Antioxidant Activity of Red Rice (Oryza Nivara. L) Through the DPPH (2,2-Diphenyl-1pilkrilhidrazil) Method." In The Bali Biennial International Conference on Health Sciences. SCITEPRESS - Science and Technology Publications, 2022. http://dx.doi.org/10.5220/0011937600003576.

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Nazliniwaty, T. Ismanelly Hanum, and Lia Laila. "Antioxidant Activity Test of Green Tea (Camellia sinensis L. Kuntze) Ethanolic Extract using DPPH Method." In International Conference of Science, Technology, Engineering, Environmental and Ramification Researches. SCITEPRESS - Science and Technology Publications, 2018. http://dx.doi.org/10.5220/0010087307520754.

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Lestari, Indah Tri, Amal Fadholah, and Dhia Suhailah. "Comparison of Antioxidant Activity between Turmeric- Tamarind Infused Water and Traditional Herbal using DPPH Method." In International Conference on Social Determinants of Health. SCITEPRESS - Science and Technology Publications, 2021. http://dx.doi.org/10.5220/0010756400003235.

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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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"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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Reports on the topic "DPPH method"

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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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