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257 articles for “Activity Concentration”
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Research ArticleOpen accessIn the abstractExtracts of Pumpkin (Cucurbita pepo L.) Seeds Suppress Stimulated Peripheral Blood Mononuclear Cells in vitroChristiana Winkler, Barbara Wirleitner, Katharaina Schroecksnadel et al.In the traditional medicine in North America and Mexico, pumpkin seeds have been used as an anthelmintic agent and for supportive treatment in functional disorders of the bladder. Also anti-inflammatory and cardioprotective activity of pumpkin seeds is discussed. Three different extracts of pumpkin seeds were prepared and effects were investigated in unstimulated human peripheral blood mononuclear cells and in cells … …American Journal of Immunology, Vol. 1, Issue 1 · 31 Mar 2005 · 10,711 accessesView PDFCite
Research ArticleOpen accessIn the abstractThe Development of a New, Rapid, Amperometric Immunosensor for the Detection of Low Concentrations of Bacteria Part II: Optimization of the System for Escherichia coliEric Carnes, Ebtisam WilkinsThe optimization of a flow-through immunoassay system was conducted to achieve rapid detection of low concentrations of E. coli bacteria. The system includes a new immunosensor that uses newly developed, disposable immunofiltration membranes to yield a system that is sensitive as well as simple. Comparison of the performance of this system with conventional immunoassays demonstrated a significantly shorter time for … …American Journal of Applied Sciences, Vol. 2, Issue 3 · 31 Mar 2005 · 6,780 accessesView PDFCite
Research ArticleOpen accessAll words, across the recordFlavonoids from the Zizania latifolia Bracts: Extraction Optimization, Antioxidant Activity and Exploration in Strawberry PreservationTong Wang, Yuzhu Zhang, Lijie Ben et al.Zizania latifolia bracts are Z. latifolia-based agricultural waste materials, distributed in various parts of the world. In the current study, the Response Surface Method (RSM) was used to optimize the cellulase-assisted extraction of Total Flavonoids from Z. latifolia bracts (TFZB). Then, the in vitro antioxidant capacity and the potential effect on strawberry preservation were assessed. The results showed that the … …American Journal of Biochemistry and Biotechnology, Vol. 17, Issue 1 · 15 Mar 2021 · 6,363 accessesView PDFCite
Research ArticleOpen accessAll words, across the recordGadolinium at Low Concentration Suppresses both Osteoclastic and Osteoblastic Activities in the Scales of GoldfishNobuo Suzuki, Kazuki Watanabe, Aika Sekimoto et al.For determining the effect of environmental pollutants on fish bone metabolism, we have developed an in vitro bioassay system using teleost scales that has osteoclasts, osteoblasts and bone matrix as markers: alkaline phosphatase (ALP) for osteoblasts and tartrate-resistant acid phosphatase (TRAP) for osteoclasts. Using this bioassay, the influence of gadolinium (Gd) on osteoclasts and osteoblasts of goldfish scales was examined … …American Journal of Environmental Sciences, Vol. 15, Issue 4 · 20 Sep 2019 · 8,451 accessesView PDFCite
Research ArticleOpen accessAll words, across the recordCytotoxic Activity of Tinospora crispa Crude Extracts (Stem) Against K562 Human Leukemia CellsNormah Awang, Haziratul Iffah Ruzali, Rapidah Mohamad et al.Tinospora crispa (T. crispa) is traditionally used as an herbal medicine for treatment of gout and is an analgesic, anti-inflammatory and antihyperuricemic agent. Cytotoxicity of hexane, dichloromethane, ethanol and aqueous extracts of T. crispa stem against K562 cells was assessed. Crude extracts of T. crispa stem were obtained by sonication and maceration methods. T. crispa stem powder was macerated and … …OnLine Journal of Biological Sciences, Vol. 19, Issue 2 · 11 May 2019 · 7,870 accessesView PDFCite
Research ArticleOpen accessAll words, across the recordOptimization of Cellulase-Assisted Extraction of Total Flavonoids from Corn Bract and Evaluation of Antioxidant and Antibacterial AactivitiesYang Zhang, Jing Lu, Leijie Ben et al.Corn bract is a corn-based agricultural waste material that distributed worldwide. In present work, response surface methodology was applied to optimize the cellulase-assisted extraction of Total Flavonoids from Corn Bract (TFCB), the in vitro antioxidant and antibacterial as well as the in vivo antioxidant activities of TFCB were investigated. Results showed that the optimal conditions for TFCB extraction were as … …American Journal of Biochemistry and Biotechnology, Vol. 15, Issue 2 · 18 May 2019 · 8,501 accessesView PDFCite
Research ArticleOpen accessAll words, across the recordBiosynthesis of Zinc Oxide Nanoparticles and Assay of Antibacterial ActivityEmad J. Ibrahem, Karkaz M. Thalij, Mahmood K. Saleh, Amin S. BadawyIn this study Out of 280 urinary tract infections samples, 212(75.7%) bacterial isolates were recovered. Based on, morphological, cultural and biochemical testes, further, confirmed the results by VITEK 2 System there were 54 (30.2%) of gram positive whereas the 158 (69.8%) of gram negative. The bacterial isolates were distributed as Escherichia coli followed by Klebsiella pneumoniae, Staphylococcus aureus, Pseudomonas aeruginosa … …American Journal of Biochemistry and Biotechnology, Vol. 13, Issue 2 · 3 Apr 2017 · 8,880 accessesView PDFCite
Research ArticleOpen accessAll words, across the recordRETRACTED: Evaluation of the Cytotoxic Activity of Aqueous Extract of Schinus terebinthifolius RaddiA. Arnóbio, O. N. Terra Jr., P. R.G. Lemos et al.Phytotherapy consists in all pharmaceutical preparation using certain part of plants as a feedstock with known pharmacological effects for medicinal purposes. In order to a better understanding of the biological effects associated with herbal medicines, many scientific studies have been conducted and developed in recent years. SchinusterebinthifoliusRaddi (Aroeira) is native from Peru and is also found in Europe, Asia and … …American Journal of Infectious Diseases, Vol. 8, Issue 4 · 8 Feb 2013 · 7,611 accessesView PDFCite
Research ArticleOpen accessAll words, across the recordBacteriological Examination of Computer Keyboards and Mouse Devices and Their Susceptibility Patterns to DisinfectantsOnochie Charles Chimezie, Anyim Chukwudi, Alo Moses Nnaemeka et al.Computers are ubiquitous and have been shown to be contaminated with potentially pathogenic bacteria in some communities. There is no economical way to test all the keyboards and mouse out there, but there are common-sense ways to prevent bacterial contamination or eliminate it if it exists. In this study, swabs specimens were collected from surfaces of 250 computer keyboards and … …Current Research in Microbiology, Vol. 4, Issue 1 · 19 Jan 2013 · 13,509 accessesView PDFCite
Research ArticleOpen accessAll words, across the recordHydroxyl Radical-Scavenging Activity-Guided Extraction of Peptides from Oviductus ranaeJieyang Shen, Yihui Liu, Jiahao Xu et al.Oviductus Ranae (OR) is a traditional Chinese medicinal material that is listed in Chinese Pharmacopeia with proteins the most abundant ingredients. In present work, pepsin/trypsin-based stepwise hydrolysis was applied to extract Antioxidant Peptides from OR (APOR) using hydroxyl radical-scavenging capacity as evaluation index. After single-factor experiment, response surface method coupled with Box-Behnken design were used for optimizing process parameters and … …American Journal of Biochemistry and Biotechnology, Vol. 17, Issue 4 · 18 Oct 2021 · 6,609 accessesView PDFCite