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73 articles for “DPPH”
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Research ArticleOpen accessIn the abstractAnalgesic and Antioxidant Activity of the Hydromethanolic Extract of Mikania scandens (L.) Willd. LeavesS.M. Raquibul Hasan, Mariam Jamila, Muntasir Mamun Majumder et al.Problem statement: Mikania scandens (L.) Willd., a medicinal plant, is popularly used as herbal remedy for various ailments in Bangladesh. But the scientific basis for its medicinal use especially in pain and inflammation remains unknown. Therefore, the present study was designed to evaluate analgesic and antioxidant potential of the hydromethanol extract of the leaves of the plant. Approach: The analgesic … …American Journal of Pharmacology and Toxicology, Vol. 4, Issue 1 · 31 Mar 2009 · 12,542 accessesView PDFCite
Research ArticleOpen accessIn the abstractAntibacterial and Antioxidant Activities of Typhonium Flagelliforme (Lodd.) Blume TuberSyam Mohan, Ahmad Bustamam Abdul, Siddig Ibrahim Abdel Wahab et al.Problem Statement: Multiple drug resistance in human pathogenic micro organisms has developed due to indiscriminate use of modern antimicrobial drugs generally used in the management of infectious diseases. This increases the importance of exploiting the natural sources instead modern drugs. Approach: The antibacterial and antioxidant activity of different extracts from of Typhonium flagelliforme (L.) Blume tuber (family: Araceae) commonly called … …American Journal of Biochemistry and Biotechnology, Vol. 4, Issue 4 · 31 Dec 2008 · 10,420 accessesView PDFCite
Research ArticleOpen accessIn the abstractMicrowave Assisted Regioselective Synthesis and Biological Evaluation of Pyrano[2,3-c]Pyridine Derivatives Utilizing DMAP as a CatalystAsmaa M. FahimRegioselective facile production of pyrano[2,3-c]pyridine through multicomponent reaction of aromatic aldehydes, ethyl cyano acetate or malononitrile and C-H activated compound of 3-hydroxy picolinic acid in the occurrence of smaller amount of DMAP catalyst utilizing microwave apparatus, which is green and simple environmentally with high yield, recyclability catalyst. Totally the products were partitioned for antimicrobiogical action; it was detected that were … …OnLine Journal of Biological Sciences, Vol. 17, Issue 4 · 14 Dec 2017 · 8,019 accessesView PDFCite
Research ArticleOpen accessIn the abstractOptimization of Enzymatic Hydrolysis of Freeze-Dried Sea Cucumber Powder with Response Surface Methodology and Its Antioxidant EvaluationYahui Pang, Jianfeng Sun, Qian LiuIn this study, freeze-dried sea cucumber powder was used as raw material and the preparation processing conditions were studied for hydrolysis of sea cucumber powder with neutral protease using Response Surface Methodology (RSM) to obtain a high concentration of sea cucumber polypeptide. The effects of hydrolysis temperature, pH, enzyme dosage and hydrolysis time on the degree of hydrolysis (DH) were … …American Journal of Biochemistry and Biotechnology, Vol. 12, Issue 4 · 17 Oct 2016 · 7,431 accessesView PDFCite
Research ArticleOpen accessIn the abstractComparative Extraction of Pectic and Polyphenols from Mexican Lime Pomace and BagasseDaniela Sanchez-Aldana, Cristobal Noe Aguilar, Guadalupe Virginia Nevarez-Moorillon, Juan Carlos Contreras EsquivelMexican lime bagasse and pomace are rich in pectin and they also represent an important source of value-added compounds such as polyphenols. Two different options for the combined recovery of pectin and phenolic compounds from Mexican lime bagasse and pomace, two byproducts of industrial lime processing, were developed. Conventional and microwave-assisted extraction methods were used. All pectic extracts presented a … …American Journal of Agricultural and Biological Sciences, Vol. 8, Issue 4 · 29 Oct 2013 · 7,804 accessesView PDFCite
Research ArticleOpen accessIn the abstractAnti-Oxidant and Enzyme-Inhibitory Potential of Marine StreptomycesT. Revathy, M. A. Jayasri, K. SuthindhiranMarine actinomycetes are potential source for the discovery of novel compounds and enzymes. Though extensive research on marine actinomycetes is underway globally, the actinomycetes research from Indian marine ecosystem is unexplored and understudied. Hence, the present research is focussed on the screening of bioactive compounds from marine actinomycetes isolated from Indian coastal region. This study is designed to determine the … …American Journal of Biochemistry and Biotechnology, Vol. 9, Issue 3 · 21 Sep 2013 · 7,239 accessesView PDFCite
Research ArticleOpen accessIn the abstractInfluence of Extraction Conditions on the Recovery of Phenolic Antioxidants from Spent Coffee GroundsAntonio Zuorro, Roberto LavecchiaThe extraction of phenolic compounds from Spent Coffee Grounds (SCG), a waste produced in large amounts worldwide, was investigated. SCG were rich in fiber and protein and had a total phenolic content of 18.75±0.43 mg GAE per gram dry weight. Extraction experiments were carried out in batch mode, using ethanol-water mixtures as solvent. A two-level factorial design was used to … …American Journal of Applied Sciences, Vol. 10, Issue 5 · 28 May 2013 · 8,798 accessesView PDFCite
Research ArticleOpen accessIn the abstractPhenolic Content, Antioxidant, Antimicrobial and Cytotoxic Activities of Ethanolic Extract of Salix albaGhassan Mohammad Sulaiman, Nehia Nima Hussien, Thorria Raddam Marzoog, Hussain Abood AwadThe total phenolic content, antioxidant, antimicrobial and cytotoxic activities of hot ethanolic extract of Salix alba bark were investigated. The antioxidant properties and the total phenolic contents of the extract were assessed by 1, 1-Diphenyl- 2-Picrylhydrazyl (DPPH) free radical scavenging and Folin-Ciocalteu methods, respectively. The extract showed significant antioxidant activity and antimicrobial activities against Staphylococcus aureus, Pseudomonas aeruginosa and Candida … …American Journal of Biochemistry and Biotechnology, Vol. 9, Issue 1 · 18 Mar 2013 · 10,085 accessesView PDFCite
Research ArticleOpen accessIn the abstractMulberry Fruits Protects Against Age-Related Cognitive DeclineJintanaporn Wattanathorn, Supaporn Muchimapura, Wipawee Thukhammee et al.Problem statement: The phenolic compounds and anthocyanin contents, the antioxidant and Acetylcholinesterase Inhibitor (AChI) activities of mulberry fruits were determined. Approach: Analysis of phenolic compounds and anthocyanin were performed using Folin Ciocalteu reagent and pH-differential method respectively. The antioxidant activity was determined using DPPH and FRAP assays while AChI activity was determined using Ellman method. Results: The mulberry fruit powder … …American Journal of Applied Sciences, Vol. 9, Issue 9 · 8 Aug 2012 · 7,826 accessesView PDFCite
Research ArticleOpen accessIn the abstractGermination Time Dependence of Bioactive Compounds and Antioxidant Activity in Germinated Rough Rice (Oryza sativa L.)Anuchita Moongngarm, Ekkalak KhomphiphatkulProblem statement: Germinated rice has been recognized as a functional food and its health benefits. However, most related studies were on germinated brown rice but our previous study indicated that germination of rough rice was an effective method to obtain high concentrations of bioactive compounds. Germination time is one of the most important factors affecting the level of biochemical compositions … …American Journal of Applied Sciences, Vol. 8, Issue 1 · 31 Jan 2011 · 8,663 accessesView PDFCite