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31 articles for “Spectrophotometry”
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Research ArticleOpen accessIn the keywordsDetermination of Diloxanide Furoate and Metronidazole in Binary Mixture Using First Derivative of the Ratio-Spectra and High-Performance Liquid Chromatography-UV MethodsNora H. Al-ShaalanTwo methods are presented for simultaneous determination of diloxanide furoate and metronidazole. The first method depends on first derivative of the ratio-spectra by measurements of the amplitudes at 242.5 and 285.5 nm for diloxanide furoate and 225.5 and 300 nm for metrinidazole. Calibration graphs were established for 2-100 μg mL-1 for diloxanide furoate and 1-50 μg mL-1 for metronidazole. In … …American Journal of Applied Sciences, Vol. 4, Issue 2 · 28 Feb 2007 · 7,713 accessesView PDFCite
Research ArticleOpen accessIn the keywordsSpectrofluorimetric, Atomic Absorption Spectrometric and Spectrophotometric Determination of Some FluoroquinolonesHesham SalemSimple, accurate, sensitive and selective spectrofluorimetric, atomic absorption spectrometric and spectrophotometric methods are described for the quantitative determination of ten fluoroquinolones (amifloxacin, ciprofloxacin hydrochloride, difloxacin hydrochloride, enoxacin, enrofloxacin, lomefloxacin hydrochloride, levofloxacin, norfloxacin, ofloxacin and pefloxacin mesylate). The first method was a spectrofluorimetric method in which samples of the studied drugs in 0.1 N H2SO4 showed native fluorescence at 450 nm … …American Journal of Applied Sciences, Vol. 2, Issue 3 · 31 Mar 2005 · 7,317 accessesView PDFCite
Research ArticleOpen accessIn the abstractBlack Tea Extract on the Preservation of Cantonese SausageHuan Cheng, Ying Liu, Dan Wu et al.Black Tea Extract (BTE) is a natural pigment with strong antioxidant activity. Its effect on the preservation of Cantonese sausage was investigated based on polyphenol components analysis in this study. The content of tea polyphenols in BTE was 26.61% by using spectrophotometry, the tea catechin in BTE was analyzed by HPLC, which included gallic acid (0.27%), caffeine (5.75%) and 8 … …American Journal of Biochemistry and Biotechnology, Vol. 16, Issue 3 · 3 Sep 2020 · 6,728 accessesView PDFCite
Research ArticleOpen accessIn the abstractThe Usage of Biologically Active Raw Materials in Confectionery Products TechnologyAlfiya Chernenkova, Svetlana Leonova, Tamara Nikiforova et al.Increased man-caused impact, imbalance in diets lead to diseases, premature aging and life shortening. To overcome this imbalance, there is an active search for raw materials containing the physiologically functional ingredients necessary for human health or the raw materials containing biologically active substances, vitamins, mineral substances. To enrich traditional recipes with these components and to give functional purpose to products … …OnLine Journal of Biological Sciences, Vol. 19, Issue 1 · 7 Mar 2019 · 8,750 accessesView PDFCite
Research ArticleOpen accessIn the abstractPresent a Mechatronic System Having Able to Determine the Concentration of CarotenoidsRaffaella Aversa, Eleni Buzea, Relly Victoria V. Petrescu et al.Civilization besides its major advantages (undisputed) brought us some unhealthy habits which unfortunately have managed to penetrate deeply within several generations on the current planetary populations producing great damages to its health. Perhaps it would be the right time to and more people learning to live healthy, to feed ourselves healthy, let's try to break the chain of evil which … …American Journal of Engineering and Applied Sciences, Vol. 9, Issue 4 · 7 Dec 2016 · 8,567 accessesView PDFCite
Research ArticleOpen accessIn the abstractThe Content of Heavy Metal in the Labu Riverbed Sediments: An Assessment of the Level of Pollution Applying Sediment Quality Guidelines and Geoaccumulation IndexAhmad Shoaib Jahesh, Sahibin Abd Rahim, Wan Mohd Razli IdrisRiver bed sediments from thirteen (13) sampling stations, from Labu River were collected in June and December 2014. The aim is to identify the source and ascertain the current levels of heavy metal pollutions. The selected heavy metals (Cr, Cu, Fe, Ni, Zn, As, Cd and Pb) were analysed by using Inductively Couple Plasma Mass Spectrophotometry (ICPMS). Metals were statistically … …American Journal of Environmental Sciences, Vol. 12, Issue 4 · 10 Aug 2016 · 7,402 accessesView PDFCite
Research ArticleOpen accessIn the abstractA Clean-Green Synthesis of Platinum Nanoparticles Utilizing a Pernicious Weed Lantana (Lantana Camara)Musthafa O. Mavukkandy, Sudip Chakraborty, Tasneem Abbasi, Shahid A. AbbasiA rapid, reproducible single step method is proposed for synthesizing platinum nanoparticles using an invasive weed lantana (Lantana camara, L). The method involves mixing of platinum (VI) solution, lantana leaf extract and ascorbic acid in appropriate concentrations and keeping the mixture at 95°C for 8 min. The collective action of ascorbic acid and leaf extract reduced the chloroplatinic acid to … …American Journal of Engineering and Applied Sciences, Vol. 9, Issue 1 · 23 Feb 2016 · 10,447 accessesView PDFCite
Research ArticleOpen accessIn the abstractResidues Depletion Study and Withdrawal Period Determination of Sulphadiazine and Trimethoprim Premix in PigsPanagiotis Dimitrios Katsoulos, Lydia Dritsa, Georgios Christodoulopoulos et al.The emergence and spread of antibiotic resistant human pathogens have been directly linked to the use of antibiotics in livestock production. The purpose of this study was to detect and quantify the concentration of the residues of Sulphadiazine (SDZ) and Trimethoprim (TMP) in edible tissues of pigs and to determine the withdrawal period after oral administration of OPTIPRIME® premix 40%, … …American Journal of Animal and Veterinary Sciences, Vol. 8, Issue 1 · 12 Feb 2013 · 8,360 accessesView PDFCite
Research ArticleOpen accessIn the abstractTrace Elements Distribution in the Brain of Stressed RatsZerrouk Kamal, Mohamed Najimi, Mohammed Chigr et al.Because of their ability to modulate the Gamma Aminobutyric Acid (GABA) a receptor complex, the principal aim of the current work is to assess two essential heavy metals: Iron (Fe) and zinc (Zn) by atomic absorption in different brain areas of stressed rats. To do so, we investigated the effect of acute immobilization stress (single 1-hour session) on the distribution … …Neuroscience International, Vol. 3, Issue 2 · 14 Sep 2012 · 7,277 accessesView PDFCite
Research ArticleOpen accessIn the abstractEntropyomics as the Blueprint of the Logic of Normal Cell Division and MalignancyKambiz AfrasiabiProblem statement: In this article I propose a blueprint based on one of the most fundamental laws governing the known universe, namely the second law of thermodynamics and I present support for its central role in initiation of mitosis and relationship of the other sub cellular compartments and their organization. Approach: Life is considered to be the most sophisticated antientropy … …OnLine Journal of Biological Sciences, Vol. 11, Issue 1 · 6 Jul 2011 · 10,377 accessesView PDFCite