LEE ET AL.: JOURNAL OF AOAC INTERNATIONAL VOL. 88‚ NO. 5‚ 2005 1269 DIETARY SUPPLEMENTS Determination of Total Monomeric Anthocyanin Pigment Content of Fruit Juices‚ Beverages‚ Natural Colorants‚ and Wines by the pH Differential Method: Collaborative Study JUNGMIN LEE U.S. Department of Agriculture‚ Agricultural Research Service‚ Pacific West Area (PWA)‚ Horticultural Crops Research Laboratory Worksite‚ 29603 University of Idaho Ln‚ Parma‚ ID 83660 ROBERT W. DURST and RONALD E. WROLSTAD Oregon
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Bases‚ Buffers and Respiration Darlene E. McDonald WCCC Fall 2012 Ap Lab 071-07 Dr. Roxanne Levandosky August 31‚ 2012 I. INTRODUCTION: A.PURPOSE: a. To define and understand the key terms. ~acid ~buffer system ~base ~acidosis ~pH ~alkalosis ~pH scale ~hypoventilation ~pH indicators ~hyperventilation b. To determine the acidic or base nature and actual pH of various substances. c. To discuss the formation of the carbonic acid/bicarbonate ion buffer system
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plants (Raphanus sativus)‚ by implementing varying pH levels of buffer solution into the soil. We have allotted a total of four days (Tuesday‚ April 10‚ 2012- Friday April 13‚ 2012) to examine the effects of acid rain. Purpose: To investigate the effect of implementing buffer solutions of varying pH levels in soil on the growth in height of radish plants (Raphanus sativus). Independent Variable: The varying levels of pH of buffer solutions placed into the plants’ soil Dependent Variable: The
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answers the question “whose DNA was left behind?”. Materials: * Transfer pipets * Agarose Gel * Dyed DNA samples * Electrophoresis Buffer * Electrophoresis Chamber * Casting Tray * Dams * Comb * Power Supply * Heat Source * 500 ml Beaker or Flask * Distilled Water (used to make buffer solutions) Procedure: 1. After all of the required materials are received‚ rubber dams must close off the ends of the casting tray. 2. A comb
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Enzyme Activity Over Different Concentrations and Effects The goals of this experiment were to examine the effectively of enzymes on samples of different enzyme concentrations and substrate concentrations. In addition‚ the experiment tested how effective enzymes are on samples of pH levels and temperature levels. A. Effect of Enzyme Concentration Hypothesis: With half as much enzyme concentration then the reaction rate will be half as much than when the enzyme concentration is equal
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In which one of the following solutions will acetic acid have the greatest percent ionization? A. B. C. D. 2. Which one of the following is a buffer solution? A. B. C. D. E. 3. 0.40 M HCN and 0.10 KCN 0.20 M CH3COOH 1.0 M HNO3 and 1.0 M NaNO3 0.10 M KCN 0.50 M HCl and 0.10 NaCl Which one of the following combinations cannot function as a buffer solution? A. B. C. D. E. 4. 0.1 M CH3COOH 0.1 M CH3COOH dissolved in 1.0 M HCl 0.1 M CH3COOH plus 0.1 M CH3COONa 0.1 M CH3COOH plus 0.2 M CH3COONa
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Experiment 2: Starch Hydrolysis by Amylase Theoretical Background Polymers of carbohydrates are called polysaccharides‚ and make up some of the most important naturally occurring compounds [1]. They have thousands of monosaccharide units linked to each other by oxygen bridges. They include starch‚ glycogen‚ and cellulose‚ all three of which yield only glucose when completely hydrolyzed [2]. A B Figure 1. Starch (amylose) (A) and cellulose (B) Starch
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Index Page Abstract…………………………………………………………………………….….…….3 Introduction……………………………………………………………………….….……..3 Materials and Chemicals used…………………………..……………………..…….…..3 Procedures…………………………………………………………………..…...…...…… 4 Tables……………………………………………………………………………………...5-7 Results……..…………………………………………………………………………...……8 Discussion….………………………………………………..………………………...……8 Conclusion…………………………………………………………………………....…….8 Works Cited ………………………………………………………………………………..9
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2.6 Kinetic studies of prepared complexes The integral method of Coats–Redfern equation[19‚21‚27‚38] was used for determining the kinetic parameters of the decompositions process for the investigated metal complexes according to following equation: log[log(w_∞/(w_∞-w))⁄T^2 ]〖=log[AR/〖∅E〗^* (1-2RT⁄E^≠ )]〗-E^≠/2.303R 1/T (4) Where w_∞ is the mass loss at the accomplishment of the decomposition reaction‚ w is the mass loss at temperature T‚ ∅ is the rate of heating and R is
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