(DPPH) for estimating antioxidant activity Songklanakarin J. Sci. Technol.‚ 2004‚ 26(2) : 211-219 The use of the stable free radical diphenylpicrylhydrazyl (DPPH) to estimate the activity of antioxidants is reviewed. Current applications of the method are examined‚ particularly the use of the parameter EC50 (substrate concentration to produce 50% reduction of the DPPH). Some recommendations are made as to the most suitable ways of carrying out this assay and evaluating the data produced. Key
Premium Antioxidant Vitamin C Chemical reaction
Topic : Determination of the amount of dissolved oxygen in a water sample by iodometry-the winkler’s method. Objective: To determine the amount of dissolved oxygen in a water sample by iodometry- the winkler’s method. Apparatus: volumetric pipette‚ 3 conical flask‚ burette‚ burette clamp‚ Pasteur pipette‚ reagent bottle‚ conical flask stopper‚ retord stand‚ white tile Materials: 2 ml manganese sulphate solution‚ 2 ml alkaline-iodine solution‚ 0.025M sodium thiosulphate solution‚ 2ml concentration
Free Iodine Sulfuric acid Titration
Computer Laboratory Problems experienced by Second Year Information Technology Students of West Negros University A Research Paper Presented to Dr. Glori Edna R. Libo-on School of Arts and Sciences West Negros University In Partial Fulfillment of the Requirement in English 121 – Writing in the Discipline Members : Winna F. Bucao Eloise Gasper Mark A. Panerio Jenen M. Casumpang Bryan V. Alipo-on Jun Anthony M. Leonillo Jorelyn D. Cabanatan Chapter 1 INTRODUCTION Computer is
Premium Computer
that of respect to H+ was 0. This clearly explains why there is only a minimal deviation in the rate of reaction in runs 4-6 when the amount of Na2S2O3 was maintained constant and the HCl amount was varied. The complete solution can be found in the Sample Calculations page. Temperature-dependence of Reaction Rate: The Arrhenius Equation Based on the data obtained‚ temperature is directly proportional to the rate of reaction. As the temperature increases‚ the rate of reaction also increases.
Premium Chemical reaction Reaction rate Chemical kinetics
CENTRE FOR RESEARCH ANNA UNIVERSITY CHENNAI – 600 025 Dr. USHA NATESAN Director Lr. No.CR/WSC/PROG-REP/2013 CIRCULAR Office :+91 44 2235 7023 +91 44 2235 0361 Fax : +91 44 2220 1213 E-mail : dirresearch@annauniv.edu dirresearch@gmail.com 03.05.2013 Sub: Ph.D./M.S./M.Tech. (By Research) – Submission of progress report – Reg. In 20th Research Board‚ Ph.D. / M.S. (By Research) Regulations Clause 15.1 was amended as Commencing from the date of provisional registration till the submission
Premium Chennai The Work Documents
Assignment Questions 1. What are the unique strategies that the emerging-market companies employ in pursuing globalization? 2. What strategies will M&M have to employ in the U.S. to be able to sell its SUVs? 3. What are the various alternatives in front of M&M in building its brand at the global level? You will also integrate the questions throughout as part of your analysis. In addition‚ be sure to address the following: • Provide a cultural profile of the company and it’s historical background
Premium BSE Sensex Companies based in Mumbai
TRENDS What’s happening in the world of iced beverages? We’ve looked at our data and we found out that... 1. Year on year (YoY) Beverage Contribution is decreasing FACT IS... According to the USDA‚ Customers want variety and are a glass of milk (1% fat) always looking for something new can provide about 12% of the required calcium intake: our Iced Choco can Customers want “healthy” provide about options 2. 3. 14% Dunkin Donuts Icy Choco Iced Premium Roast Coffee
Premium Coffee Milk Drink
Cindy Johnson 11-16-2010 English 9A—Glotfelty Unit 4 Portfolio “Cinderella” vs. “Little Red Riding Hood” “Why‚ Grandmother‚ what big teeth you have!” Almost anyone would recognize those words addressed to the big bad wolf in the fairy tale” Little Red Riding Hood‚” just as most people would also recognize “Bibbidi-Bobbidi-Boo” as the words of the fairy godmother from “Cinderella.” What most people may not realize‚ however‚ is that although “Cinderella” and” Little Red Riding Hood” are
Premium Little Red Riding Hood Fairy tale Family
EXPERIMENTAL DESIGN - BIOLOGY Bromelain Name: Jaroslava Baranová Candidate number: 000771- Examination session: May 2012 Date of elaboration: 2.2.2011 Research question: What is the effect of enzyme bromelain contained in pineapple on the process of gelatinization of gelatine? Hypothesis: Enzymes are proteins that speed up or catalyze chemical reactions. Gelatine consists of gelatin(84-90%)‚mineral salts(1-2%) and water‚ and is free of fat cholesterol. Gelatin is a protein
Premium
characteristics: (1) the collection of information (2) from a sample (3) by asking questions‚ in order to describe some aspects of the population of which the sample is a part. The Purpose of Survey Research * The major purpose of all surveys is to describe the characteristics of a population. * Rarely is the population as a whole studied‚ however. Instead‚ a sample is surveyed and a description of the population is inferred from what the sample reveals. Types of Surveys * There are two major
Premium Qualitative research Scientific method Quantitative research